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Zaki AM, Pasadhika S, Huang JC, Thomas AS, Burkholder BM, Lim LL, Llop SM, Suhler EB, Adamus G, Rosenbaum JT. Characterization of autoimmune eye disease in association with Down's syndrome. Eye (Lond) 2024; 38:386-392. [PMID: 37598261 PMCID: PMC10810817 DOI: 10.1038/s41433-023-02706-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 07/30/2023] [Accepted: 08/10/2023] [Indexed: 08/21/2023] Open
Abstract
BACKGROUND Autoimmunity and deficiency of the transcription factor autoimmune regulator protein (AIRE) are known associations with Down syndrome (DS). Lack of AIRE abrogates thymic tolerance. The autoimmune eye disease associated with DS has not been characterized. We identified a series of subjects with DS (n = 8) and uveitis. In three consecutive subjects, we tested the hypothesis that autoimmunity to retinal antigens might be a contributing factor. SUBJECTS/METHODS This was a multicentred, retrospective case series. Deidentified clinical data of subjects with both DS and uveitis were collected via questionnaire by uveitis-trained ophthalmologists. Anti-retinal autoantibodies (AAbs) were detected using an Autoimmune Retinopathy Panel tested in the OHSU Ocular Immunology Laboratory. RESULTS We characterized eight subjects (mean age 29 [range, 19-37] years). The mean age of detected uveitis onset was 23.5 [range, 11-33] years. All eight subjects had bilateral uveitis (p < 0.001 based on comparison to published university referral patterns), with anterior and intermediate uveitis found in six and five subjects respectively. Each of three subjects tested for anti-retinal AAbs was positive. Detected AAbs included anti-carbonic anhydrase II, anti-enolase, anti-arrestin, and anti-aldolase. DISCUSSION A partial deficiency in the AIRE on chromosome 21 has been described in DS. The similarities in the uveitis presentations within this patient group, the known autoimmune disease predisposition in DS, the recognized association of DS and AIRE deficiency, the reported detection of anti-retinal antibodies in patients with DS in general, and the presence of anti-retinal AAbs in three subjects in our series supports a causal association between DS and autoimmune eye disease.
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Affiliation(s)
- Amr M Zaki
- Casey Eye Institute, Oregon Health & Science University, Portland, OR, USA
| | | | - Jerry C Huang
- Department of Ophthalmology, Keelung Chang Gung Memorial Hospital, Keelung, Taiwan
| | | | - Bryn M Burkholder
- Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Lyndell L Lim
- Centre for Eye Research Australia, University of Melbourne, Parkville, VIC, Australia
- Royal Victorian Eye and Ear Hospital, Melbourne, VIC, Australia
| | - Stephanie M Llop
- Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Eric B Suhler
- Casey Eye Institute, Oregon Health & Science University, Portland, OR, USA
- Portland Veterans Administration Health Care System, Portland, OR, USA
| | - Grazyna Adamus
- Casey Eye Institute, Oregon Health & Science University, Portland, OR, USA
| | - James T Rosenbaum
- Casey Eye Institute, Oregon Health & Science University, Portland, OR, USA.
- Legacy Devers Eye Institute, Portland, OR, USA.
- Department of Medicine, Oregon Health & Science University, Portland, OR, USA.
- Corvus Pharmaceuticals, Burlingame, CA, USA.
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Rosenbaum J, Zaki A, Pasadhika S, Huang J, Thomas A, Burkholder B, Lim L, Llop S, Suhler E, Adamus G. Characterization of autoimmune eye disease in association with Down's Syndrome. Res Sq 2023:rs.3.rs-2766021. [PMID: 37205347 PMCID: PMC10187437 DOI: 10.21203/rs.3.rs-2766021/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Background Autoimmunity and deficiency of the transcription factor autoimmune regulator protein (AIRE) are known associations with Down Syndrome (DS). Lack of AIRE abrogates thymic tolerance. The autoimmune eye disease associated with DS has not been characterized. We identified a series of subjects with DS (n = 8) and uveitis. In 3 consecutive subjects, we tested the hypothesis that autoimmunity to retinal antigens might be a contributing factor. Subjects/Methods: This was a multicentered, retrospective case series. De-identified clinical data of subjects with both DS and uveitis were collected via questionnaire by uveitis-trained ophthalmologists. Anti-retinal autoantibodies (AAbs) were detected using an Autoimmune Retinopathy Panel tested in the OHSU Ocular Immunology Laboratory. Results We characterized 8 subjects (mean age 29 [range, 19-37] years). The mean age of uveitis onset was 23.5 [range, 11-33] years. All 8 subjects had bilateral uveitis (p < 0.001 based on comparison to published university referral patterns), with anterior and intermediate uveitis found in 6 and 5 subjects respectively. Each of three subjects tested for anti-retinal AAbs was positive. Detected AAbs included anti-carbonic anhydrase II, anti-enolase, anti-arrestin, and anti-aldolase. Discussion A partial deficiency in the AIRE on chromosome 21 has been described in DS. The similarities in the uveitis presentations within this patient group, the known autoimmune disease predisposition in DS, the recognized association of DS and AIRE deficiency, the reported detection of anti-retinal antibodies in patients with DS in general, and the presence of anti-retinal AAbs in 3 subjects in our series supports a causal association between DS and autoimmune eye disease.
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Affiliation(s)
| | | | | | - Jerry Huang
- Keelung Chang Gung Memorial hospital, Keelung
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Parati M, Philip C, Mendrek B, Townrow D, Khalil I, Tchuenbou-Magaia F, Stanley M, Kowalczuk M, Adamus G, Radecka I. A circular bioprocess application of algal-based substrate for Bacillus subtilis natto production of γ-PGA. Front Chem 2023; 11:1158147. [PMID: 37153520 PMCID: PMC10158937 DOI: 10.3389/fchem.2023.1158147] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 04/03/2023] [Indexed: 05/09/2023] Open
Abstract
Poly-γ-glutamic acid (γ-PGA) is a bio-derived water-soluble, edible, hydrating, non-immunogenic polymer. Bacillus subtilis natto is a wild-type γ-PGA producer originally isolated from Japanese fermented natto beans whose activity has been shown to be enhanced through ion-specific activation of Extrachromosomal DNA maintenance mechanisms. Being a GRAS γ-PGA producer, this microorganism has attracted great interest in its use within an industrial context. Here we successfully synthesised amorphous, crystalline and semi-crystalline γ-PGA between 11-27 g/L. In line with circular economy principles, scalable macroalgal biomass has been evaluated as substrate for γ-PGA, displaying great potential in both yields and material composition. In this study whole cell, freeze dried seaweed -namely Laminaria digitata, Saccharina latissima and Alaria esculenta-were pre-treated by means of mechanical methods, sterilised and subsequently inoculated with B. subtilis natto. High shear mixing was found to be the most suitable pre-treatment technique. Supplemented L. digitata (9.1 g/L), S. latissima (10.2 g/L), A. esculenta (13 g/L) displayed γ-PGA yields comparable to those of standard GS media (14.4 g/L). Greatest yields of pure γ-PGA were obtained during the month of June for L. digitata (Avg. 4.76 g/L) comparable to those obtained with GS media (7.0 g/L). Further, pre-treated S. latissima and L. digitata complex media enabled for high molar mass (4,500 kDa) γ-PGA biosynthesis at 8.6 and 8.7 g/L respectively. Compared to standard GS media, algal derived γ-PGA displayed significantly higher molar masses. Further studies will be necessary to further evaluate the impact of varying ash contents upon the stereochemical properties and modify the properties of algal media based γ-PGA with the aid of key nutrients; however, the material synthesised to date can directly displace a number of fossil fuel derived chemicals in drug delivery applications, cosmetics, bioremediation, wastewater treatment, flocculation and as cryoprotectants.
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Affiliation(s)
- Mattia Parati
- Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton, United Kingdom
- *Correspondence: Mattia Parati, ; Iza Radecka,
| | - Catherine Philip
- Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton, United Kingdom
| | - Barbara Mendrek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Zabrze, Poland
| | - David Townrow
- Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton, United Kingdom
| | - Ibrahim Khalil
- Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton, United Kingdom
| | | | - Michele Stanley
- Scottish Association for Marine Sciences, Oban, United Kingdom
| | - Marek Kowalczuk
- Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton, United Kingdom
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Zabrze, Poland
| | - Grazyna Adamus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Zabrze, Poland
| | - Iza Radecka
- Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton, United Kingdom
- *Correspondence: Mattia Parati, ; Iza Radecka,
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Swingler S, Gupta A, Gibson H, Kowalczuk M, Adamus G, Heaselgrave W, Radecka I. Thymoquinone: Hydroxypropyl-β-cyclodextrin Loaded Bacterial Cellulose for the Management of Wounds. Pharmaceutics 2022; 14:pharmaceutics14122816. [PMID: 36559309 PMCID: PMC9781873 DOI: 10.3390/pharmaceutics14122816] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 11/23/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
The need for more advantageous and pharmaceutically active wound dressings is a pressing matter in the area of wound management. In this study, we explore the possibility of incorporating thymoquinone within bacterial cellulose, utilising cyclodextrins as a novel method of solubilising hydrophobic compounds. The thymoquinone was not soluble in water, so was incorporated within hydroxypropyl-β-cyclodextrin before use. Thymoquinone: hydroxypropyl-β-cyclodextrin inclusion complex produced was found to be soluble in water up to 7% (w/v) and was stable with no crystal formation for at least 7 days with the ability to be loaded within the bacterial cellulose matrix. The inclusion complex was found to be thermally stable up to 280 °C which is far greater than the production temperature of 80 °C and was stable in phosphate-buffered saline and extraction solvents in permeation and dose experiments. The adhesion properties of the Thymoquinone: hydroxypropyl-β-cyclodextrin loaded bacterial cellulose dressings were tested and found to be 2.09 N. Permeation studies on skin mimicking membrane Strat-M showed a total permeated amount (0-24 h) of 538.8 µg cm-2 and average flux after a 2 h lag of 22.4 µg h-1 cm-2. To the best of our knowledge, the methods outlined in this study are the first instance of loading bacterial cellulose with thymoquinone inclusion complex with the aim of producing a pharmaceutically active wound dressing.
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Affiliation(s)
- Sam Swingler
- Department of Biology, Chemistry and Forensic Science, School of Sciences, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK
- Correspondence: (S.S.); (I.R.)
| | - Abhishek Gupta
- School of Allied Health and Midwifery, Faculty of Education, Health and Wellbeing, University of Wolverhampton, Walsall WS1 3BD, UK
| | - Hazel Gibson
- Department of Biology, Chemistry and Forensic Science, School of Sciences, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK
| | - Marek Kowalczuk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland
| | - Grazyna Adamus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland
| | - Wayne Heaselgrave
- Department of Biomedical Science, University of Wolverhampton, Wolverhampton WV1 1LY, UK
| | - Iza Radecka
- Department of Biology, Chemistry and Forensic Science, School of Sciences, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK
- Correspondence: (S.S.); (I.R.)
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Parati M, Khalil I, Tchuenbou-Magaia F, Adamus G, Mendrek B, Hill R, Radecka I. Building a circular economy around poly(D/L-γ-glutamic acid)- a smart microbial biopolymer. Biotechnol Adv 2022; 61:108049. [DOI: 10.1016/j.biotechadv.2022.108049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 10/03/2022] [Accepted: 10/06/2022] [Indexed: 11/26/2022]
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Mansoor Z, Tchuenbou-Magaia F, Kowalczuk M, Adamus G, Manning G, Parati M, Radecka I, Khan H. Polymers Use as Mulch Films in Agriculture-A Review of History, Problems and Current Trends. Polymers (Basel) 2022; 14:polym14235062. [PMID: 36501456 PMCID: PMC9740682 DOI: 10.3390/polym14235062] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/15/2022] [Accepted: 11/17/2022] [Indexed: 11/23/2022] Open
Abstract
The application of mulch films for preserving soil moisture and preventing weed growth has been a part of agricultural practice for decades. Different materials have been used as mulch films, but polyethylene plastic has been considered most effective due to its excellent mechanical strength, low cost and ability to act as a barrier for sunlight and water. However, its use carries a risk of plastic pollution and health hazards, hence new laws have been passed to replace it completely with other materials over the next few years. Research to find out about new biodegradable polymers for this purpose has gained impetus in the past few years, driven by regulations and the United Nations Organization's Sustainable Development Goals. The primary requisite for these polymers is biodegradability under natural climatic conditions without the production of any toxic residual compounds. Therefore, biodegradable polymers developed from fossil fuels, microorganisms, animals and plants are viable options for using as mulching material. However, the solution is not as simple since each polymer has different mechanical properties and a compromise has to be made in terms of strength, cost and biodegradability of the polymer for its use as mulch film. This review discusses the history of mulching materials, the gradual evolution in the choice of materials, the process of biodegradation of mulch films, the regulations passed regarding material to be used, types of polymers that can be explored as potential mulch films and the future prospects in the area.
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Affiliation(s)
- Zinnia Mansoor
- School of Sciences, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK
- Department of Biotechnology, Virtual University of Pakistan, Lahore 54000, Pakistan
| | - Fideline Tchuenbou-Magaia
- Division of Chemical Engineering, School of Engineering, Computing and Mathematical Sciences, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK
| | - Marek Kowalczuk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland
| | - Grazyna Adamus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland
| | - Georgina Manning
- School of Sciences, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK
| | - Mattia Parati
- School of Sciences, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK
| | - Iza Radecka
- School of Sciences, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK
- Correspondence: (I.R.); (H.K.)
| | - Habib Khan
- School of Sciences, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK
- Correspondence: (I.R.); (H.K.)
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Johnston B, Adamus G, Ekere AI, Kowalczuk M, Tchuenbou-Magaia F, Radecka I. Bioconversion of Plastic Waste Based on Mass Full Carbon Backbone Polymeric Materials to Value-Added Polyhydroxyalkanoates (PHAs). Bioengineering (Basel) 2022; 9:bioengineering9090432. [PMID: 36134978 PMCID: PMC9496005 DOI: 10.3390/bioengineering9090432] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/26/2022] [Accepted: 08/28/2022] [Indexed: 11/28/2022] Open
Abstract
This review article will discuss the ways in which various polymeric materials, such as polyethylene (PE), polypropylene (PP), polystyrene (PS), and poly(ethylene terephthalate) (PET) can potentially be used to produce bioplastics, such as polyhydroxyalkanoates (PHAs) through microbial cultivation. We will present up-to-date information regarding notable microbial strains that are actively used in the biodegradation of polyolefins. We will also review some of the metabolic pathways involved in the process of plastic depolymerization and discuss challenges relevant to the valorization of plastic waste. The aim of this review is also to showcase the importance of methods, including oxidative degradation and microbial-based processes, that are currently being used in the fields of microbiology and biotechnology to limit the environmental burden of waste plastics. It is our hope that this article will contribute to the concept of bio-upcycling plastic waste to value-added products via microbial routes for a more sustainable future.
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Affiliation(s)
- Brian Johnston
- Science in Industry Research Centre (SIRC), SciTech Innovation Hub, Wolverhampton Science Park, Glaisher Drive, Wolverhampton WV10 9RU, UK
- School of Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK
- Correspondence: (B.J.); (I.R.)
| | - Grazyna Adamus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 41-800 Zabrze, Poland
| | - Anabel Itohowo Ekere
- School of Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK
| | - Marek Kowalczuk
- School of Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 41-800 Zabrze, Poland
| | - Fideline Tchuenbou-Magaia
- School of Engineering, Computing and Mathematical Sciences, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK
| | - Iza Radecka
- School of Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK
- Correspondence: (B.J.); (I.R.)
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Demchenko V, Mamunya Y, Kobylinskyi S, Riabov S, Naumenko K, Zahorodnia S, Povnitsa O, Rybalchenko N, Iurzhenko M, Adamus G, Kowalczuk M. Structure-Morphology-Antimicrobial and Antiviral Activity Relationship in Silver-Containing Nanocomposites Based on Polylactide. Molecules 2022; 27:molecules27123769. [PMID: 35744897 PMCID: PMC9227702 DOI: 10.3390/molecules27123769] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 06/02/2022] [Accepted: 06/08/2022] [Indexed: 11/23/2022]
Abstract
Green synthesis of silver-containing nanocomposites based on polylactide (PLA) was carried out in two ways. With the use of green tea extract, Ag+ ions were reduced to silver nanoparticles with their subsequent introduction into the PLA (mechanical method) and Ag+ ions were reduced in the polymer matrix of PLA-AgPalmitate (PLA-AgPalm) (in situ method). Structure, morphology and thermophysical properties of nanocomposites PLA-Ag were studied by FTIR spectroscopy, wide-angle X-ray scattering (WAXS), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC) methods. The antimicrobial, antiviral, and cytotoxic properties were studied as well. It was found that the mechanical method provides the average size of silver nanoparticles in the PLA of about 16 nm, while in the formation of samples by the in situ method their average size was 3.7 nm. The strong influence of smaller silver nanoparticles (3.7 nm) on the properties of nanocomposites was revealed, as with increasing nanosilver concentration the heat resistance and glass transition temperature of the samples decreases, while the influence of larger particles (16 nm) on these parameters was not detected. It was shown that silver-containing nanocomposites formed in situ demonstrate antimicrobial activity against gram-positive bacterium S. aureus, gram-negative bacteria E. coli, P. aeruginosa, and the fungal pathogen of C. albicans, and the activity of the samples increases with increasing nanoparticle concentration. Silver-containing nanocomposites formed by the mechanical method have not shown antimicrobial activity. The relative antiviral activity of nanocomposites obtained by two methods against influenza A virus, and adenovirus serotype 2 was also revealed. The obtained nanocomposites were not-cytotoxic, and they did not inhibit the viability of MDCK or Hep-2 cell cultures.
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Affiliation(s)
- Valeriy Demchenko
- Department of Polymer Modification, Institute of Macromolecular Chemistry of the National Academy of Sciences of Ukraine, 48. Kharkivske Shose, 02160 Kyiv, Ukraine; (Y.M.); (S.K.); (S.R.); (M.I.)
- Department of Plastics Welding, Evgeny Oskarovich Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11. Kazymyr Malevych Str., 03680 Kyiv, Ukraine
- International Polish-Ukrainian Research Laboratory Formation and Characterization of Advanced Polymers and Polymer Composites (ADPOLCOM), Department of Plastics Welding, Evgeny Oskarovich Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11. Kazymyr Malevych Str., 03680 Kyiv, Ukraine;
- Correspondence: (V.D.); (M.K.)
| | - Yevgen Mamunya
- Department of Polymer Modification, Institute of Macromolecular Chemistry of the National Academy of Sciences of Ukraine, 48. Kharkivske Shose, 02160 Kyiv, Ukraine; (Y.M.); (S.K.); (S.R.); (M.I.)
- Department of Plastics Welding, Evgeny Oskarovich Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11. Kazymyr Malevych Str., 03680 Kyiv, Ukraine
- International Polish-Ukrainian Research Laboratory Formation and Characterization of Advanced Polymers and Polymer Composites (ADPOLCOM), Department of Plastics Welding, Evgeny Oskarovich Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11. Kazymyr Malevych Str., 03680 Kyiv, Ukraine;
| | - Serhii Kobylinskyi
- Department of Polymer Modification, Institute of Macromolecular Chemistry of the National Academy of Sciences of Ukraine, 48. Kharkivske Shose, 02160 Kyiv, Ukraine; (Y.M.); (S.K.); (S.R.); (M.I.)
| | - Sergii Riabov
- Department of Polymer Modification, Institute of Macromolecular Chemistry of the National Academy of Sciences of Ukraine, 48. Kharkivske Shose, 02160 Kyiv, Ukraine; (Y.M.); (S.K.); (S.R.); (M.I.)
| | - Krystyna Naumenko
- Danylo Kyrylovych Zabolotny Institute of Microbiology and Virology of the National Academy of Sciences of Ukraine, 154. Academic Zabolotny Str., 03680 Kyiv, Ukraine; (K.N.); (S.Z.); (O.P.); (N.R.)
| | - Svitlana Zahorodnia
- Danylo Kyrylovych Zabolotny Institute of Microbiology and Virology of the National Academy of Sciences of Ukraine, 154. Academic Zabolotny Str., 03680 Kyiv, Ukraine; (K.N.); (S.Z.); (O.P.); (N.R.)
| | - Olga Povnitsa
- Danylo Kyrylovych Zabolotny Institute of Microbiology and Virology of the National Academy of Sciences of Ukraine, 154. Academic Zabolotny Str., 03680 Kyiv, Ukraine; (K.N.); (S.Z.); (O.P.); (N.R.)
| | - Nataliya Rybalchenko
- Danylo Kyrylovych Zabolotny Institute of Microbiology and Virology of the National Academy of Sciences of Ukraine, 154. Academic Zabolotny Str., 03680 Kyiv, Ukraine; (K.N.); (S.Z.); (O.P.); (N.R.)
| | - Maksym Iurzhenko
- Department of Polymer Modification, Institute of Macromolecular Chemistry of the National Academy of Sciences of Ukraine, 48. Kharkivske Shose, 02160 Kyiv, Ukraine; (Y.M.); (S.K.); (S.R.); (M.I.)
- Department of Plastics Welding, Evgeny Oskarovich Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11. Kazymyr Malevych Str., 03680 Kyiv, Ukraine
- International Polish-Ukrainian Research Laboratory Formation and Characterization of Advanced Polymers and Polymer Composites (ADPOLCOM), Department of Plastics Welding, Evgeny Oskarovich Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11. Kazymyr Malevych Str., 03680 Kyiv, Ukraine;
| | - Grazyna Adamus
- International Polish-Ukrainian Research Laboratory Formation and Characterization of Advanced Polymers and Polymer Composites (ADPOLCOM), Department of Plastics Welding, Evgeny Oskarovich Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11. Kazymyr Malevych Str., 03680 Kyiv, Ukraine;
- Laboratory of Biodegradable Materials, Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland
| | - Marek Kowalczuk
- International Polish-Ukrainian Research Laboratory Formation and Characterization of Advanced Polymers and Polymer Composites (ADPOLCOM), Department of Plastics Welding, Evgeny Oskarovich Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11. Kazymyr Malevych Str., 03680 Kyiv, Ukraine;
- Laboratory of Biodegradable Materials, Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland
- Correspondence: (V.D.); (M.K.)
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Demchenko V, Rybalchenko N, Zahorodnia S, Naumenko K, Riabov S, Kobylinskyi S, Vashchuk A, Mamunya Y, Iurzhenko M, Demchenko O, Adamus G, Kowalczuk M. Preparation, Characterization, and Antimicrobial and Antiviral Properties of Silver-Containing Nanocomposites Based on Polylactic Acid-Chitosan. ACS Appl Bio Mater 2022; 5:2576-2585. [PMID: 35532757 DOI: 10.1021/acsabm.2c00034] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Antimicrobial and antiviral nanocomposites based on polylactic acid (PLA) and chitosan were synthesized by a thermochemical reduction method of Ag+ ions in the PLA-Ag+-chitosan polymer films. Features of the structural, morphological, thermophysical, antimicrobial, antiviral, and cytotoxic properties of PLA-Ag-chitosan nanocomposites were studied by X-ray diffraction (XRD), transmission electron microscopy (TEM), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and antiviral, antimicrobial, and cytotoxic studies. The effects of temperature and the duration of reduction of Ag+ ions on the structure of PLA-Ag-chitosan nanocomposites were established. During the thermochemical reduction (T = 160 °C, t = 5 min) of silver palmitate ions in PLA-Ag+-chitosan polymer films, Ag nanoparticles with an average size of 4.2 nm were formed. PLA-Ag-chitosan polymer nanocomposites have strong antimicrobial activity against S. aureus and E. coli strains. In particular, for PLA-chitosan samples containing 4% Ag, the diameters of the S. aureus and E. coli growth inhibition zones were 25.8 and 25.0 mm, respectively. The antiviral activity of the nanocomposites against influenza A virus, herpes simplex virus type 1, and adenovirus serotype 2 was also revealed. The PLA-4%Ag-chitosan nanocomposites completely inhibited the cytopathic effect (CPE) of herpes virus type 1 by 5.12 log10TCID50/mL (high antiviral activity) and the development of the CPE of influenza virus and adenovirus by 0.60 and 1.07 log10TCID50/mL (relative antiviral activity). The obtained nanocomposites were not cytotoxic; they did not inhibit the viability of MDCK, BHK-21, and Hep-2 cell cultures.
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Affiliation(s)
- Valeriy Demchenko
- Institute of Macromolecular Chemistry, The National Academy of Sciences of Ukraine, Kyiv 02160, Ukraine.,E.O. Paton Electric Welding Institute, The National Academy of Sciences of Ukraine, Kyiv 03680, Ukraine.,International Polish-Ukrainian Research Laboratory ADPOLCOM, Zabrze 41-819, Poland
| | - Nataliya Rybalchenko
- Zabolotny Institute of Microbiology and Virology, The National Academy of Sciences of Ukraine, Kyiv 03143, Ukraine
| | - Svetlana Zahorodnia
- Zabolotny Institute of Microbiology and Virology, The National Academy of Sciences of Ukraine, Kyiv 03143, Ukraine
| | - Krystyna Naumenko
- Zabolotny Institute of Microbiology and Virology, The National Academy of Sciences of Ukraine, Kyiv 03143, Ukraine
| | - Sergii Riabov
- Institute of Macromolecular Chemistry, The National Academy of Sciences of Ukraine, Kyiv 02160, Ukraine
| | - Serhii Kobylinskyi
- Institute of Macromolecular Chemistry, The National Academy of Sciences of Ukraine, Kyiv 02160, Ukraine
| | - Alina Vashchuk
- E.O. Paton Electric Welding Institute, The National Academy of Sciences of Ukraine, Kyiv 03680, Ukraine
| | - Yevgen Mamunya
- Institute of Macromolecular Chemistry, The National Academy of Sciences of Ukraine, Kyiv 02160, Ukraine.,E.O. Paton Electric Welding Institute, The National Academy of Sciences of Ukraine, Kyiv 03680, Ukraine.,International Polish-Ukrainian Research Laboratory ADPOLCOM, Zabrze 41-819, Poland
| | - Maksym Iurzhenko
- Institute of Macromolecular Chemistry, The National Academy of Sciences of Ukraine, Kyiv 02160, Ukraine.,E.O. Paton Electric Welding Institute, The National Academy of Sciences of Ukraine, Kyiv 03680, Ukraine.,International Polish-Ukrainian Research Laboratory ADPOLCOM, Zabrze 41-819, Poland
| | - Olena Demchenko
- National Research Center for Radiation Medicine, The National Academy of Medical Sciences of Ukraine, Kyiv 04050, Ukraine
| | - Grazyna Adamus
- International Polish-Ukrainian Research Laboratory ADPOLCOM, Zabrze 41-819, Poland.,Centre of Polymer and Carbon Materials, The Polish Academy of Sciences, Zabrze 41-819, Poland
| | - Marek Kowalczuk
- International Polish-Ukrainian Research Laboratory ADPOLCOM, Zabrze 41-819, Poland.,Centre of Polymer and Carbon Materials, The Polish Academy of Sciences, Zabrze 41-819, Poland
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10
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Demchenko V, Kobylinskyi S, Iurzhenko M, Riabov S, Vashchuk A, Rybalchenko N, Zahorodnia S, Naumenko K, Demchenko O, Adamus G, Kowalczuk M. Nanocomposites based on polylactide and silver nanoparticles and their antimicrobial and antiviral applications. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2021.105096] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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11
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Adamus G. Importance of Autoimmune Responses in Progression of Retinal Degeneration Initiated by Gene Mutations. Front Med (Lausanne) 2021; 8:672444. [PMID: 34926479 PMCID: PMC8674421 DOI: 10.3389/fmed.2021.672444] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 05/11/2021] [Accepted: 11/01/2021] [Indexed: 12/13/2022] Open
Abstract
Inherited retinal diseases (IRDs) are clinically and genetically heterogeneous rare disorders associated with retinal dysfunction and death of retinal photoreceptor cells, leading to blindness. Among the most frequent and severe forms of those retinopathies is retinitis pigmentosa (RP) that affects 1:4,000 individuals worldwide. The genes that have been implicated in RP are associated with the proteins present in photoreceptor cells or retinal pigment epithelium (RPE). Asymmetric presentation or sudden progression in retinal disease suggests that a gene mutation alone might not be responsible for retinal degeneration. Immune responses could directly target the retina or be site effect of immunity as a bystander deterioration. Autoantibodies against retinal autoantigens have been found in RP, which led to a hypothesis that autoimmunity could be responsible for the progression of photoreceptor cell death initiated by a genetic mutation. The other contributory factor to retinal degeneration is inflammation that activates the innate immune mechanisms, such as complement. If autoimmune responses contribute to the progression of retinopathy, this could have an implication on treatment, such as gene replacement therapy. In this review, we provide a perspective on the current role of autoimmunity/immunity in RP pathophysiology.
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Affiliation(s)
- Grazyna Adamus
- Ocular Immunology Laboratory, Casey Eye Institute, School of Medicine, Oregon Health and Science University, Portland, OR, United States
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12
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Laskari K, Hellmich B, Adamus G, Csernok E. Autoantibody profile in eosinophilic granulomatosis and polyangiitis: predominance of anti-alpha-enolase antibodies. Clin Exp Rheumatol 2021; 39 Suppl 129:83-87. [DOI: 10.55563/clinexprheumatol/08k9af] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 08/31/2020] [Indexed: 11/13/2022]
Affiliation(s)
- Katerina Laskari
- Rheumatology Unit, 1st Department of Propaedeutic Internal Medicine, Joint Academic Rheumatology Program, Medical School, University of Athens, Greece
| | - Bernard Hellmich
- Department of Internal Medicine, Rheumatology and Immunology, Vasculitis-Centre Tübingen-Kirchheim, Medius Klinik Kirchheim, University of Tübingen, Kirchheim-Teck, Germany
| | - Grazyna Adamus
- Ocular Immunology Laboratory, Casey Eye Institute, School of Medicine, Oregon Health & Science University, Portland, OR, USA
| | - Elena Csernok
- Department of Internal Medicine, Rheumatology and Immunology, Vasculitis-Centre Tübingen-Kirchheim, Medius Klinik Kirchheim, University of Tübingen, Kirchheim-Teck, Germany.
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13
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Swingler S, Gupta A, Gibson H, Heaselgrave W, Kowalczuk M, Adamus G, Radecka I. The Mould War: Developing an Armamentarium against Fungal Pathogens Utilising Thymoquinone, Ocimene, and Miramistin within Bacterial Cellulose Matrices. Materials (Basel) 2021; 14:ma14102654. [PMID: 34070218 PMCID: PMC8158721 DOI: 10.3390/ma14102654] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 05/11/2021] [Accepted: 05/15/2021] [Indexed: 11/17/2022]
Abstract
An increase in antifungal resistance has seen a surge in fungal wound infections in patients who are immunocompromised resulting from chemotherapy, disease, and burns. Human pathogenic fungi are increasingly becoming resistant to a sparse repertoire of existing antifungal drugs, which has given rise to the need to develop novel treatments for potentially lethal infections. Bacterial cellulose (BC) produced by Gluconacetobacter xylinus has been shown to possess many properties that make it innately useful as a next-generation biopolymer to be utilised as a wound dressing. The current study demonstrates the creation of a pharmacologically active wound dressing by loading antifungal agents into a biopolymer hydrogel to produce a novel wound dressing. Amphotericin B is known to be highly hepatotoxic, which reduces its appeal as an antifungal drug, especially in patients who are immunocompromised. This, coupled with an increase in antifungal resistance, has seen a surge in fungal wound infections in patients who are immunodeficient due to chemotherapy, disease, or injury. Antifungal activity was conducted via Clinical & Laboratory Standards Institute (CLSI) M27, M38, M44, and M51 against Candida auris, Candida albicans, Aspergillus fumigatus, and Aspergillus niger. This study showed that thymoquinone has a comparable antifungal activity to amphotericin B with mean zones of inhibition of 21.425 ± 0.925 mm and 22.53 ± 0.969 mm, respectively. However, the mean survival rate of HEp-2 cells when treated with 50 mg/L amphotericin B was 29.25 ± 0.854% compared to 71.25 ± 1.797% when treated with 50 mg/L thymoquinone. Following cytotoxicity assays against HEp-2 cells, thymoquinone showed a 71.25 ± 3.594% cell survival, whereas amphotericin B had a mean cell survival rate of 29.25 ± 1.708%. The purpose of this study was to compare the efficacy of thymoquinone, ocimene, and miramistin against amphotericin B in the application of novel antifungal dressings.
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Affiliation(s)
- Sam Swingler
- Wolverhampton School of Sciences, Faculty of Science and Engineering, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK;
- Research Institute in Healthcare Science, Faculty of Science and Engineering, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK; (A.G.); (W.H.)
- Correspondence: (S.S.); (I.R.)
| | - Abhishek Gupta
- Research Institute in Healthcare Science, Faculty of Science and Engineering, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK; (A.G.); (W.H.)
- Institute of Health, Faculty of Education, Health and Wellbeing, University of Wolverhampton, Jerome K Jerome Building, Gorway Road, Walsall Campus, Walsall WS1 3BD, UK
| | - Hazel Gibson
- Wolverhampton School of Sciences, Faculty of Science and Engineering, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK;
- Research Institute in Healthcare Science, Faculty of Science and Engineering, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK; (A.G.); (W.H.)
| | - Wayne Heaselgrave
- Research Institute in Healthcare Science, Faculty of Science and Engineering, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK; (A.G.); (W.H.)
- Department of Biomedical Science, University of Wolverhampton, MA Building, Wulfruna Street, Wolverhampton WV1 1LY, UK
| | - Marek Kowalczuk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland; (M.K.); (G.A.)
| | - Grazyna Adamus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland; (M.K.); (G.A.)
| | - Iza Radecka
- Wolverhampton School of Sciences, Faculty of Science and Engineering, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK;
- Research Institute in Healthcare Science, Faculty of Science and Engineering, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK; (A.G.); (W.H.)
- Correspondence: (S.S.); (I.R.)
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14
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Zięba M, Włodarczyk J, Gupta A, Pastusiak M, Chaber P, Janeczek H, Musioł M, Sikorska W, Kaczmarczyk B, Radecka I, Kowalczuk M, Savickas A, Savickiene N, Adamus G. Bioresorbable electrospun mats of poly(D, L)-lactide/poly[(R, S)-3-hydroxybutyrate] blends for potential use in the treatment of difficult-to-heal skin wounds. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110334] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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15
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Grozdanic SD, Lazic T, Kecova H, Mohan K, Adamus G, Kuehn MH. Presumed cancer-associated retinopathy (CAR) mimicking Sudden Acquired Retinal Degeneration Syndrome (SARDS) in canines. Vet Ophthalmol 2020; 24:125-155. [PMID: 33369040 PMCID: PMC8048582 DOI: 10.1111/vop.12853] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 06/01/2020] [Revised: 11/30/2020] [Accepted: 12/04/2020] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To describe functional and structural features of presumed cancer-associated retinopathy (CAR) mimicking sudden acquired retinal degeneration syndrome (SARDS) in dogs and describe treatment outcomes. ANIMALS Subjects were 17 dogs from 8 eight US states and Canada diagnosed with SARDS or immune-mediated retinitis (IMR) by 12 ophthalmologists. Nine eyes from seven deceased patients were used for microarray (MA), histology, or immunohistochemical (IHC) analysis. PROCEDURES Dogs underwent complete ophthalmic examination, including retinal photography, optical coherence tomography (OCT), chromatic pupil light reflex testing (cPLR), and electroretinography (ERG), in addition to complete systemic examination. Histology, microarray, and IHC analysis were performed in CAR retinas to evaluate histological and molecular changes in retinal tissue. RESULTS None of the patients evaluated satisfied previously established criteria for diagnosis of SARDS (flat ERG+ no red - good blue PLR), and all were diagnosed with IMR. All patients were diagnosed with a cancer: meningioma (24%), sarcoma (18%), pituitary tumor (12%), and squamous cell carcinoma (12%), other (34%). Median survival time was 6 months from diagnosis (range 1-36 months). Most frequent systemic abnormalities were as follows: proteinuria (78%); elevated liver enzymes (47%); and metabolic changes (PU/PD, polyphagia - 24%). Immunosuppressive therapy resulted in the reversal of blindness in 44% of treated patients, with 61% of all treated patients recovering and/or maintaining vision. Median time for preservation of vision was 5 months (range 1-35 months). CONCLUSIONS Observed changes are highly suggestive of immune-mediated damage in IMR-CAR eyes. A relatively high percentage of patients with CAR responded positively to immunosuppressive therapy.
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Affiliation(s)
- Sinisa D Grozdanic
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA, USA.,Animal Eye Consultants of Iowa, Hiawatha, IA, USA.,TL VetPath International Consultants, Hiawatha, IA, USA
| | - Tatjana Lazic
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA, USA.,Animal Eye Consultants of Iowa, Hiawatha, IA, USA.,TL VetPath International Consultants, Hiawatha, IA, USA
| | - Helga Kecova
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA, USA.,Animal Eye Consultants of Iowa, Hiawatha, IA, USA
| | - Kabhilan Mohan
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Grazyna Adamus
- Department of Ophthalmology, Oregon Health & Science University, Portland, OR, USA
| | - Markus H Kuehn
- Department of Ophthalmology and Visual Sciences, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA, USA.,Center for the Prevention and Treatment of Visual Loss, Iowa City VA Health Care System, Iowa City, IA, USA
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16
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Zięba M, Chaber P, Duale K, Martinka Maksymiak M, Basczok M, Kowalczuk M, Adamus G. Polymeric Carriers for Delivery Systems in the Treatment of Chronic Periodontal Disease. Polymers (Basel) 2020; 12:E1574. [PMID: 32679893 PMCID: PMC7407295 DOI: 10.3390/polym12071574] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 07/13/2020] [Accepted: 07/14/2020] [Indexed: 12/18/2022] Open
Abstract
Periodontitis (PD) is a chronic inflammatory disease of periodontal tissues caused by pathogenic microorganisms and characterized by disruption of the tooth-supporting structures. Conventional drug administration pathways in periodontal disease treatment have many drawbacks such as poor biodistribution, low selectivity of the therapeutic effect, burst release of the drug, and damage to healthy cells. To overcome this limitation, controlled drug delivery systems have been developed as a potential method to address oral infectious disease ailments. The use of drug delivery devices proves to be an excellent auxiliary method in improving the quality and effectiveness in periodontitis treatment, which includes inaccessible periodontal pockets. This review explores the current state of knowledge regarding the applications of various polymer-based delivery systems such as hydrogels, liposomes, micro-, and nanoparticles in the treatment of chronic periodontal disease. Furthermore, to present a more comprehensive understanding of the difficulties concerning the treatment of PD, a brief description of the mechanism and development of the disease is outlined.
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Affiliation(s)
- Magdalena Zięba
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland; (P.C.); (K.D.); (M.M.M.); (M.K.)
| | - Paweł Chaber
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland; (P.C.); (K.D.); (M.M.M.); (M.K.)
| | - Khadar Duale
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland; (P.C.); (K.D.); (M.M.M.); (M.K.)
| | - Magdalena Martinka Maksymiak
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland; (P.C.); (K.D.); (M.M.M.); (M.K.)
| | - Maciej Basczok
- Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University, 6 Uniwersytetu Poznańskiego St., 61-614 Poznań, Poland;
| | - Marek Kowalczuk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland; (P.C.); (K.D.); (M.M.M.); (M.K.)
| | - Grazyna Adamus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland; (P.C.); (K.D.); (M.M.M.); (M.K.)
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17
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He J, Xiao H, Li B, Peng Y, Li X, Wang Y, Adamus G, Kowalczuk M, Shuai X. The programmed site-specific delivery of the angiostatin sunitinib and chemotherapeutic paclitaxel for highly efficient tumor treatment. J Mater Chem B 2020; 7:4953-4962. [PMID: 31411627 DOI: 10.1039/c9tb01159e] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Malignant solid tumors are composed of tumor cells, stromal cells and the complex networks of the tumor microenvironment (TME), which is the underlying cause of the unsatisfactory outcome of conventional chemotherapy approaches only aimed at cancer cell killing. In this study, a novel TME-responsive polymeric micelle has been developed for the programmed site-specific delivery of the angiostatin sunitinib and chemotherapeutic paclitaxel (PTX). The pH-sensitive micelle core encapsulates PTX, while β-cyclodextrin molecules being conjugated to the micelle shell via matrix metalloproteinase 2 (MMP-2) sensitive peptides include sunitinib. Following the pH and MMP-2 dual sensitive structure design, the micelle may sequentially release sunitinib inside the tumor extracellular matrix and PTX into cancer cells through responding to enriched MMP-2 levels and decreased pH, respectively. Consequently, the anti-angiogenesis effect of sunitinib and tumor cell-killing effect of PTX synergize, resulting in highly efficient tumor treatment.
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Affiliation(s)
- Jin He
- PCFM Lab of Ministry of Education, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China.
| | - Hong Xiao
- PCFM Lab of Ministry of Education, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China.
| | - Bo Li
- PCFM Lab of Ministry of Education, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China.
| | - Yuan Peng
- PCFM Lab of Ministry of Education, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China.
| | - Xiaoxia Li
- PCFM Lab of Ministry of Education, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China.
| | - Yong Wang
- PCFM Lab of Ministry of Education, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China.
| | - Grazyna Adamus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland.
| | - Marek Kowalczuk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland. and Wolverhampton School of Sciences, Faculty of Science and Engineering, University of Wolverhampton, Wulfruna Street, Wolverhampton, WV1 1LY, UK
| | - Xintao Shuai
- PCFM Lab of Ministry of Education, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China.
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18
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Sikorska W, Zięba M, Musioł M, Kowalczuk M, Janeczek H, Chaber P, Masiuchok O, Demchenko V, Talanyuk V, Iurzhenko M, Puskas J, Adamus G. Forensic Engineering of Advanced Polymeric Materials-Part VII: Degradation of Biopolymer Welded Joints. Polymers (Basel) 2020; 12:E1167. [PMID: 32438761 PMCID: PMC7284890 DOI: 10.3390/polym12051167] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/07/2020] [Accepted: 05/13/2020] [Indexed: 11/16/2022] Open
Abstract
Welding technology may be considered as a promising processing method for the formation of packaging products from biopolymers. However, the welding processes used can change the properties of the polymer materials, especially in the region of the weld. In this contribution, the impact of the welding process on the structure and properties of biopolymer welds and their ability to undergo hydrolytic degradation will be discussed. Samples for the study were made from polylactide (PLA) and poly(3-hydroxyalkanoate) (PHA) biopolymers which were welded using two methods: ultrasonic and heated tool welding. Differential scanning calorimetry (DSC) analysis showed slight changes in the thermal properties of the samples resulting from the processing and welding method used. The results of hydrolytic degradation indicated that welds of selected biopolymers started to degrade faster than unwelded parts of the samples. The structure of degradation products at the molecular level was confirmed using mass spectrometry. It was found that hydrolysis of the PLA and PHA welds occurs via the random ester bond cleavage and leads to the formation of PLA and PHA oligomers terminated by hydroxyl and carboxyl end groups, similarly to as previously observed for unwelded PLA and PHA-based materials.
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Affiliation(s)
- W. Sikorska
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland; (W.S.); (M.Z.); (M.M.); (M.K.); (H.J.); (P.C.)
- International Polish-Ukrainian Research Laboratory ADPOLCOM, Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland
| | - M. Zięba
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland; (W.S.); (M.Z.); (M.M.); (M.K.); (H.J.); (P.C.)
- International Polish-Ukrainian Research Laboratory ADPOLCOM, Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland
| | - M. Musioł
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland; (W.S.); (M.Z.); (M.M.); (M.K.); (H.J.); (P.C.)
| | - M. Kowalczuk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland; (W.S.); (M.Z.); (M.M.); (M.K.); (H.J.); (P.C.)
- International Polish-Ukrainian Research Laboratory ADPOLCOM, Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland
| | - H. Janeczek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland; (W.S.); (M.Z.); (M.M.); (M.K.); (H.J.); (P.C.)
| | - P. Chaber
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland; (W.S.); (M.Z.); (M.M.); (M.K.); (H.J.); (P.C.)
- International Polish-Ukrainian Research Laboratory ADPOLCOM, Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland
| | - O. Masiuchok
- E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11. Kazymyr Malevych Str., 03680 Kyiv, Ukraine; (O.M.); (V.D.); (V.T.); (M.I.)
- International Polish-Ukrainian Research Laboratory ADPOLCOM, E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11. Kazymyr Malevych Str., 03680 Kyiv, Ukraine
| | - V. Demchenko
- E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11. Kazymyr Malevych Str., 03680 Kyiv, Ukraine; (O.M.); (V.D.); (V.T.); (M.I.)
- International Polish-Ukrainian Research Laboratory ADPOLCOM, E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11. Kazymyr Malevych Str., 03680 Kyiv, Ukraine
| | - V. Talanyuk
- E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11. Kazymyr Malevych Str., 03680 Kyiv, Ukraine; (O.M.); (V.D.); (V.T.); (M.I.)
| | - M. Iurzhenko
- E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11. Kazymyr Malevych Str., 03680 Kyiv, Ukraine; (O.M.); (V.D.); (V.T.); (M.I.)
- International Polish-Ukrainian Research Laboratory ADPOLCOM, E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11. Kazymyr Malevych Str., 03680 Kyiv, Ukraine
| | - J.E. Puskas
- Department of Food, Agricultural and Biological Engineering, The Ohio State University, 1680 Madison Avenue, Wooster, OH 44325, USA;
| | - G. Adamus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland; (W.S.); (M.Z.); (M.M.); (M.K.); (H.J.); (P.C.)
- International Polish-Ukrainian Research Laboratory ADPOLCOM, Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. C. Skłodowska St., 41-800 Zabrze, Poland
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19
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Abstract
Introduction Autoimmune retinopathy (AR) is a sight-threating retinal disorder that is mediated by autoantibodies (AAbs) against retinal proteins. The visual paraneoplastic syndromes, including cancer-associated retinopathy (CAR) and melanoma-associated retinopathy (MAR) are mediated by anti-retinal AAbs. A number of immunochemical techniques have been used to detect serum anti-retinal autoantibodies in patients to help with autoimmune diagnosis. Area covered We review techniques used for serum autoantibody evaluation in patients with suspected autoimmune retinopathy. Expert opinion Detection of serum AAbs have served as the standard diagnostic tool for autoimmune retinopathies and for management of retinal disorders. An identification of anti-retinal autoantibody or multiple autoantibodies can be useful for not only for diagnosis of autoimmune retinopathies but also for management of retinal disorders. We propose that the line-blotting technique used in conjunction with immunohistochemistry are the best and most reliable assays for detection of serum anti-retinal AAb in the context of clinical history and findings. Clinician should recognize that the majority of antigenic targets identified to date in retinal autoimmunity are ubiquitously expressed proteins (e.g. enolase), which may be difficult to reconcile with the specific patterns of retinal damage observed in CAR, MAR, or AR.
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Affiliation(s)
- Grazyna Adamus
- Ocular Immunology Laboratory, Casey Eye Institute, School of Medicine, Oregon Health and Science University, Portland, Oregon, USA
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20
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Gupta A, Briffa SM, Swingler S, Gibson H, Kannappan V, Adamus G, Kowalczuk M, Martin C, Radecka I. Synthesis of Silver Nanoparticles Using Curcumin-Cyclodextrins Loaded into Bacterial Cellulose-Based Hydrogels for Wound Dressing Applications. Biomacromolecules 2020; 21:1802-1811. [PMID: 31967794 PMCID: PMC7588018 DOI: 10.1021/acs.biomac.9b01724] [Citation(s) in RCA: 143] [Impact Index Per Article: 35.8] [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: 01/20/2023]
Abstract
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Chronic wounds are
often recalcitrant to treatment because of high
microbial bioburden and the problem of microbial resistance. Silver
is a broad-spectrum natural antimicrobial agent with wide applications
extending to proprietary wound dressings. Recently, silver nanoparticles
have attracted attention in wound management. In the current study,
the green synthesis of nanoparticles was accomplished using a natural
reducing agent, curcumin, which is a natural polyphenolic compound
that is well-known as a wound-healing agent. The hydrophobicity of
curcumin was overcome by its microencapsulation in cyclodextrins.
This study demonstrates the production, characterization of silver
nanoparticles using aqueous curcumin:hydroxypropyl-β-cyclodextrin
complex and loading them into bacterial cellulose hydrogel with moist
wound-healing properties. These silver nanoparticle-loaded bacterial
cellulose hydrogels were characterized for wound-management applications.
In addition to high cytocompatibility, these novel dressings exhibited
antimicrobial activity against three common wound-infecting pathogenic
microbes Staphylococcus aureus, Pseudomonas
aeruginosa, and Candida auris.
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Affiliation(s)
- Abhishek Gupta
- School of Pharmacy, Faculty of Science and Engineering, University of Wolverhampton, WV1 1LY Wolverhampton, U.K.,Research Institute in Healthcare Science, Faculty of Science and Engineering, University of Wolverhampton, WV1 1LY Wolverhampton, U.K
| | - Sophie M Briffa
- School of Geography, Earth and Environmental Sciences, University of Birmingham, B15 2TT Birmingham, U.K
| | - Sam Swingler
- Wolverhampton School of Sciences, Faculty of Science and Engineering, University of Wolverhampton, WV1 1LY, Wolverhampton, U.K
| | - Hazel Gibson
- Wolverhampton School of Sciences, Faculty of Science and Engineering, University of Wolverhampton, WV1 1LY, Wolverhampton, U.K.,Research Institute in Healthcare Science, Faculty of Science and Engineering, University of Wolverhampton, WV1 1LY Wolverhampton, U.K
| | - Vinodh Kannappan
- Research Institute in Healthcare Science, Faculty of Science and Engineering, University of Wolverhampton, WV1 1LY Wolverhampton, U.K
| | - Grazyna Adamus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland
| | - Marek Kowalczuk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland
| | - Claire Martin
- Department of Biological Sciences, School of Sciences and the Environment, University of Worcester, WR1 3AS Worcester, U.K
| | - Iza Radecka
- Wolverhampton School of Sciences, Faculty of Science and Engineering, University of Wolverhampton, WV1 1LY, Wolverhampton, U.K.,Research Institute in Healthcare Science, Faculty of Science and Engineering, University of Wolverhampton, WV1 1LY Wolverhampton, U.K
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21
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Adamus G, Champaigne R, Yang S. Occurrence of major anti-retinal autoantibodies associated with paraneoplastic autoimmune retinopathy. Clin Immunol 2020. [PMID: 31770612 DOI: 10.1016/j.clin2019.108317] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Autoantibodies (AAbs) against retinal antigens can be found in patients with cancer and unexplained vision loss unrelated to the cancer metastasis. Cancer-associated retinopathy (CAR) is a rare paraneoplastic visual syndrome mediated by AAbs. Our goal was to determine whether CAR patients with different malignancies have a specific AAb or repertoire of AAbs that could serve as biomarkers for retinal disease. We found AAbs against 12 confirmed retinal antigens, with α-enolase being the most frequently recognized. The significant finding of the study was a high incidence of anti-aldolase AAbs in colon-CAR, anti-CAII in prostate-CAR, and anti-arrestin in skin melanoma patients thus these AAbs could serve as biomarkers in the context of clinical presentation and could support the diagnosis of CAR. However, a lack of AAb restriction to any one antigenic protein or to one retinal cellular location makes screening for a CAR biomarker challenging.
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Affiliation(s)
- Grazyna Adamus
- Ocular Immunology Laboratory, Casey Eye Institute, School of Medicine, Oregon Health & Science University, Portland, OR, USA.
| | - Rachel Champaigne
- Ocular Immunology Laboratory, Casey Eye Institute, School of Medicine, Oregon Health & Science University, Portland, OR, USA
| | - Sufang Yang
- Ocular Immunology Laboratory, Casey Eye Institute, School of Medicine, Oregon Health & Science University, Portland, OR, USA
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22
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Adamus G, Champaigne R, Yang S. Occurrence of major anti-retinal autoantibodies associated with paraneoplastic autoimmune retinopathy. Clin Immunol 2019; 210:108317. [PMID: 31770612 DOI: 10.1016/j.clim.2019.108317] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 10/11/2019] [Accepted: 11/22/2019] [Indexed: 02/08/2023]
Abstract
Autoantibodies (AAbs) against retinal antigens can be found in patients with cancer and unexplained vision loss unrelated to the cancer metastasis. Cancer-associated retinopathy (CAR) is a rare paraneoplastic visual syndrome mediated by AAbs. Our goal was to determine whether CAR patients with different malignancies have a specific AAb or repertoire of AAbs that could serve as biomarkers for retinal disease. We found AAbs against 12 confirmed retinal antigens, with α-enolase being the most frequently recognized. The significant finding of the study was a high incidence of anti-aldolase AAbs in colon-CAR, anti-CAII in prostate-CAR, and anti-arrestin in skin melanoma patients thus these AAbs could serve as biomarkers in the context of clinical presentation and could support the diagnosis of CAR. However, a lack of AAb restriction to any one antigenic protein or to one retinal cellular location makes screening for a CAR biomarker challenging.
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Affiliation(s)
- Grazyna Adamus
- Ocular Immunology Laboratory, Casey Eye Institute, School of Medicine, Oregon Health & Science University, Portland, OR, USA.
| | - Rachel Champaigne
- Ocular Immunology Laboratory, Casey Eye Institute, School of Medicine, Oregon Health & Science University, Portland, OR, USA
| | - Sufang Yang
- Ocular Immunology Laboratory, Casey Eye Institute, School of Medicine, Oregon Health & Science University, Portland, OR, USA
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23
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SIKORSKA WANDA, Musiol M, Rydz J, Kowalczuk M, Adamus G. Industrial composting as a waste management method of polyester materials obtained from renewable sources. POLIMERY-W 2019. [DOI: 10.14314/polimery.2019.11.11] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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24
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Gliem M, Birtel J, Müller PL, Hendig D, Faust I, Herrmann P, Holz FG, Adamus G, Charbel Issa P. Acute Retinopathy in Pseudoxanthoma Elasticum. JAMA Ophthalmol 2019; 137:1165-1173. [PMID: 31393536 DOI: 10.1001/jamaophthalmol.2019.2910] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Importance Acute retinopathy may partly explain variable disease manifestation and vision loss in patients with pseudoxanthoma elasticum (PXE). The diagnosis of this likely autoimmune process may inform patient counseling and treatment approaches. Objective To characterize acute retinopathy in patients with PXE as a disease manifestation that may be associated with profound visual impairment. Design, Setting, and Participants This single-center case series was conducted from May 2013 to October 2018. It used the patient database of the Department of Ophthalmology at the University of Bonn, a referral center for PXE in Germany. Patients at this center with genetically confirmed PXE and who met the inclusion criteria were included (n = 9). Patients underwent multimodal retinal imaging, including fundus photography, fundus autofluorescence (AF), optical coherence tomography (OCT), fluorescein angiography (FA), and indocyanine green angiography (ICGA); in select cases, electroretinography as well as antiretinal and anti-retinal pigment epithelium (RPE) antibody testing were also used. Main Outcomes and Measures Clinical presentation and disease course. Results Nine patients (8 [89%] female; mean [range] age, 43 [19-55] years) with acute retinopathy were identified in a cohort of 167 consecutive patients with PXE (frequency of 5%). Symptoms ranged from light sensations or metamorphopsia to profound vision loss. Visual acuity was reduced in 6 patients (67%), ranging from a best-corrected visual acuity of 20/30 to perception of hand movements at manifestation. All patients revealed characteristic fundus features with temporary appearance of partly confluent outer retinal whitish dots at the posterior pole, which corresponded to areas of hyperautofluorescence on fundus AF, loss of the ellipsoid band on OCT, and associated scotomata. The FA and late-phase ICGA imaging showed associated hyperfluorescence and hypocyanescence. Electroretinography revealed a variable reduction of amplitudes. Changes were fully reversible within 1 month in 3 of 8 patients with available follow-up data. Of the remaining 5 patients, 3 had a prolonged and likely permanent vision loss (observation period, 1-64 months) mainly owing to central subretinal hyperreflective material originating from angioid streaks. In 4 (67%) of 6 tested, antiretinal and/or anti-RPE antibodies were detected. Conclusions and Relevance Acute retinopathy in patients with PXE may occur, with symptoms ranging from short-term, reversible alterations to irreversible vision loss; these findings contribute to understanding the variable ocular disease progression in PXE and provide insights into the autoimmune phenomena of the posterior pole.
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Affiliation(s)
- Martin Gliem
- Department of Ophthalmology, University of Bonn, Bonn, Germany.,Center for Rare Diseases Bonn (ZSEB), University of Bonn, Bonn, Germany.,Oxford Eye Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom.,Nuffield Laboratory of Ophthalmology, Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom
| | - Johannes Birtel
- Department of Ophthalmology, University of Bonn, Bonn, Germany.,Center for Rare Diseases Bonn (ZSEB), University of Bonn, Bonn, Germany
| | - Philipp L Müller
- Department of Ophthalmology, University of Bonn, Bonn, Germany.,Center for Rare Diseases Bonn (ZSEB), University of Bonn, Bonn, Germany
| | - Doris Hendig
- Institute for Laboratory and Transfusion Medicine, Heart and Diabetes, Center North Rhine-Westphalia, University Hospital of the Ruhr University of Bochum, Bad Oeynhausen, Germany
| | - Isabel Faust
- Institute for Laboratory and Transfusion Medicine, Heart and Diabetes, Center North Rhine-Westphalia, University Hospital of the Ruhr University of Bochum, Bad Oeynhausen, Germany
| | - Philipp Herrmann
- Department of Ophthalmology, University of Bonn, Bonn, Germany.,Center for Rare Diseases Bonn (ZSEB), University of Bonn, Bonn, Germany
| | - Frank G Holz
- Department of Ophthalmology, University of Bonn, Bonn, Germany.,Center for Rare Diseases Bonn (ZSEB), University of Bonn, Bonn, Germany
| | - Grazyna Adamus
- Ocular Immunology Laboratory, Casey Eye Institute, Oregon Health and Science University, Portland
| | - Peter Charbel Issa
- Department of Ophthalmology, University of Bonn, Bonn, Germany.,Center for Rare Diseases Bonn (ZSEB), University of Bonn, Bonn, Germany.,Oxford Eye Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom.,Nuffield Laboratory of Ophthalmology, Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom
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25
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Johnston B, Radecka I, Chiellini E, Barsi D, Ilieva VI, Sikorska W, Musioł M, Zięba M, Chaber P, Marek AA, Mendrek B, Ekere AI, Adamus G, Kowalczuk M. Mass Spectrometry Reveals Molecular Structure of Polyhydroxyalkanoates Attained by Bioconversion of Oxidized Polypropylene Waste Fragments. Polymers (Basel) 2019; 11:polym11101580. [PMID: 31569718 PMCID: PMC6835674 DOI: 10.3390/polym11101580] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [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: 08/14/2019] [Revised: 09/18/2019] [Accepted: 09/25/2019] [Indexed: 12/16/2022] Open
Abstract
This study investigated the molecular structure of the polyhydroxyalkanoate (PHA) produced via a microbiological shake flask experiment utilizing oxidized polypropylene (PP) waste as an additional carbon source. The bacterial strain Cupriavidus necator H16 was selected as it is non-pathogenic, genetically stable, robust, and one of the best known producers of PHA. Making use of PHA oligomers, formed by controlled moderate-temperature degradation induced by carboxylate moieties, by examination of both the parent and fragmentation ions, the ESI-MS/MS analysis revealed the 3-hydroxybutyrate and randomly distributed 3-hydroxyvalerate as well as 3-hydroxyhexanoate repeat units. Thus, the bioconversion of PP solid waste to a value-added product such as PHA tert-polymer was demonstrated.
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Affiliation(s)
- Brian Johnston
- Wolverhampton School of Biology, Chemistry and Forensic Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK.
| | - Iza Radecka
- Wolverhampton School of Biology, Chemistry and Forensic Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK.
| | - Emo Chiellini
- Laboratorio Materiali Polimerici Ecocompatibili (LMPE), via Nuova, 44/a, Segromigno in Monte, 55018 Capannori (LU), Italy.
| | - David Barsi
- Laboratorio Materiali Polimerici Ecocompatibili (LMPE), via Nuova, 44/a, Segromigno in Monte, 55018 Capannori (LU), Italy.
| | - Vassilka Ivanova Ilieva
- Laboratorio Materiali Polimerici Ecocompatibili (LMPE), via Nuova, 44/a, Segromigno in Monte, 55018 Capannori (LU), Italy.
| | - Wanda Sikorska
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 41-800 Zabrze, Poland.
| | - Marta Musioł
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 41-800 Zabrze, Poland.
| | - Magdalena Zięba
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 41-800 Zabrze, Poland.
| | - Paweł Chaber
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 41-800 Zabrze, Poland.
| | - Adam A Marek
- Department of Chemical Organic Technology and Petrochemistry, Silesian University of Technology, 44-100 Gliwice, Poland.
| | - Barbara Mendrek
- Wolverhampton School of Biology, Chemistry and Forensic Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK.
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 41-800 Zabrze, Poland.
| | - Anabel Itohowo Ekere
- Wolverhampton School of Biology, Chemistry and Forensic Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK.
| | - Grazyna Adamus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 41-800 Zabrze, Poland.
| | - Marek Kowalczuk
- Wolverhampton School of Biology, Chemistry and Forensic Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK.
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 41-800 Zabrze, Poland.
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26
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Sikorska W, Musioł M, Rydz J, Zięba M, Rychter P, Lewicka K, Šiškova A, Mosnáčková K, Kowalczuk M, Adamus G. Prediction studies of environment-friendly biodegradable polymeric packaging based on PLA. Influence of specimens' thickness on the hydrolytic degradation profile. Waste Manag 2018; 78:938-947. [PMID: 32559989 DOI: 10.1016/j.wasman.2018.07.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 05/22/2018] [Accepted: 07/06/2018] [Indexed: 06/11/2023]
Abstract
Application of new biodegradable polymer packaging based on polylactide (PLA), susceptible to organic recycling, can help in the waste reduction in landfills. In this paper, the results of the study on abiotic degradation of PLA and its blend containing 15 mol% of poly[(R,S)-3-hydroxybutyrate], as a model for the first step of organic recycling were presented. The samples used for this study have different shapes and thicknesses: rigid films and cuboid-bars. Particular emphasis was placed on determining the pattern of degradation products released into the medium. Originally, the results of present study revealed that the application of electrospray ionization mass spectrometry supported by high performance liquid chromatography allowed envisaging the differences in the degradation products pattern released from the studied PLA-based samples differing in thickness. The significant differences in degradation products pattern were predominately observed in the first steps of incubation process and are caused by an autocatalytic effect, which occurs mainly during degradation of the large size PLA samples. Although, the thickness of PLA-based packaging changes the degradation product patterns, however this does not increase the total amounts of acids released to the medium. Thus, it may be concluded that thickness should not affect significantly organic recycling of the packaging.
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Affiliation(s)
- W Sikorska
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. Curie-Skłodowska St., 41-800 Zabrze, Poland.
| | - M Musioł
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. Curie-Skłodowska St., 41-800 Zabrze, Poland
| | - J Rydz
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. Curie-Skłodowska St., 41-800 Zabrze, Poland
| | - M Zięba
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. Curie-Skłodowska St., 41-800 Zabrze, Poland
| | - P Rychter
- Faculty of Mathematics and Natural Sciences of the Jan Dlugosz University, Al. Armii Krajowej 13/15, 42-200 Częstochowa, Poland
| | - K Lewicka
- Faculty of Mathematics and Natural Sciences of the Jan Dlugosz University, Al. Armii Krajowej 13/15, 42-200 Częstochowa, Poland
| | - A Šiškova
- Polymer Institute, Slovak Academy of Science, Dubravska cesta 9, 845 41 Bratislava, Slovakia
| | - K Mosnáčková
- Polymer Institute, Slovak Academy of Science, Dubravska cesta 9, 845 41 Bratislava, Slovakia
| | - M Kowalczuk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. Curie-Skłodowska St., 41-800 Zabrze, Poland; School of Biology, Chemistry and Forensic Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1SB, UK
| | - G Adamus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34. M. Curie-Skłodowska St., 41-800 Zabrze, Poland
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27
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Adamus G. Anti-TRPM1 autoantibodies. Clin Exp Ophthalmol 2018; 47:147-148. [PMID: 30047206 DOI: 10.1111/ceo.13361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 06/25/2018] [Indexed: 11/30/2022]
Affiliation(s)
- Grazyna Adamus
- Casey Eye Institute, School of Medicine, Oregon Health and Science University, Portland, Oregon, USA
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28
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Niffenegger JH, Soltero A, Niffenegger JS, Yang S, Adamus G. Prevalence of Hepatocyte Growth Factor and Autoantibodies to α-HGF as a New Etiology for Bilateral Diffuse Uveal Melanocytic Proliferation Masquerading as Neovascular Age-Related Macular Degeneration. ACTA ACUST UNITED AC 2018; 9. [PMID: 30370177 PMCID: PMC6201244 DOI: 10.4172/2155-9570.1000740] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [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] [Indexed: 12/21/2022]
Abstract
Objective The goal was to test the hypothesis that high serum hepatocyte growth factor (HGF) and retinal autoantibodies against α-HGF contribute to the pathology of bilateral diffuse melanocytic proliferation (BDUMP). Methods Case report of an elderly diagnosed with neovascular age-related macular degeneration (n-AMD) treated with bilateral Bevacizumab injections. Examination included comprehensive ophthalmic examination and images obtained by fundus photography, fundus autofluorescence, fluorescein angiography, spectral-domain optical coherence tomography (OCT), and B-scan ultrasonography. The levels of HGF and circulating HGF receptor (c-MET) were measured in the serum by ELISA and anti-retinal autoantibodies by western blotting. Results Patient received Bevacizumab injections for presumed n-AMD and had a history of papillary renal cell carcinoma stage 4 with a tumor containing gene mutation Y1230C in the mesenchymal-epithelial transition factor (MET). Visual acuity was 20/200 OD and CF OS. Multimodal imaging was consistent with BDUMP. Plasma exchange therapy was recommended but could not be started until 10 months later due to deterioration in his medical condition. Pre- and post-plasma exchange sera demonstrated anti-retinal autoantibodies against 69-kDa protein of the same molecular weight as the α-HGF. Serum autoantibodies reacted with purified recombinant α-HGF on the blot. Conclusions BDUMP can mimic n-AMD, which can delay treatment. Plasma exchange resulted in resolved inflammation, resolution of exudative detachments and improved vision after cataract surgery. Consideration of the tumor genetics led to the recognition of elevated HGF levels and autoantibodies to α-HGF (anti-69-kDa), which suggested a new pathogenic mechanism of BDUMP. We believe that therapy with tyrosine kinase inhibitors and a checkpoint inhibitor may contribute to the high HGF levels and subsequent immune response.
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Affiliation(s)
| | | | | | - Sufang Yang
- Casey Eye Institute, School of Medicine, Oregon Health and Science University, Portland, Oregon, USA
| | - Grazyna Adamus
- Casey Eye Institute, School of Medicine, Oregon Health and Science University, Portland, Oregon, USA
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29
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Adamus G. Are Anti-Retinal Autoantibodies a Cause or a Consequence of Retinal Degeneration in Autoimmune Retinopathies? Front Immunol 2018; 9:765. [PMID: 29713325 PMCID: PMC5911469 DOI: 10.3389/fimmu.2018.00765] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [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: 11/30/2017] [Accepted: 03/27/2018] [Indexed: 12/12/2022] Open
Abstract
Autoantibodies (AAbs) against various retinal proteins have been associated with vision loss in paraneoplastic and non-paraneoplastic autoimmune retinopathies (AR). There are two major paraneoplastic syndromes associated anti-retinal AAbs, cancer-associated retinopathy (CAR), and melanoma-associated retinopathy. Some people without a cancer diagnosis may present symptoms of CAR and have anti-retinal AAbs. The etiology and pathogenesis of those entities are not fully understood. In this review, we provide evidence for the role of AAbs in retinal death and degeneration. Studies of epitope mapping for anti-recoverin, anti-enolase, and anti-carbonic anhydrase II revealed that although patients' AAbs may recognize the same retinal protein as normal individuals they bind to different molecular domains, which allows distinguishing between normal and diseased AAbs. Given the great diversity of anti-retinal AAbs, it is likely some antibodies have greater pathogenic potential than others. Pathogenic, but not normal antibodies penetrate the target cell, reach their specific antigen, induce apoptosis, and impact retinal pathophysiology. Photoreceptors, dying by apoptosis, induced by other than immunologic mechanisms produce substantial amounts of metabolic debris, which consequently leads to autoimmunization and enhanced permeability of the blood-retinal barrier. AAbs that were made as a part of anti-cancer response are likely to be the cause of retinal degeneration, whereas others, generated against released antigens from damaged retina, contribute to the progression of retinopathy. Altogether, AAbs may trigger retinal degeneration and may also exacerbate the degenerative process in response to the release of sequestered antigens and influence disease progression.
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Affiliation(s)
- Grazyna Adamus
- School of Medicine, Casey Eye Institute, Oregon Health & Science University, Portland, OR, United States
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30
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Kwiecien I, Adamus G, Jiang G, Radecka I, Baldwin TC, Khan HR, Johnston B, Pennetta V, Hill D, Bretz I, Kowalczuk M. Biodegradable PBAT/PLA Blend with Bioactive MCPA-PHBV Conjugate Suppresses Weed Growth. Biomacromolecules 2018; 19:511-520. [PMID: 29261293 DOI: 10.1021/acs.biomac.7b01636] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The herbicide 2-methyl-4-chlorophenoxyacetic acid (MCPA) conjugated with poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) was prepared via a melt transesterification route. The resultant bioactive oligomer was then mixed with a blend of polylactide (PLA) and poly(butylene adipate-co-terephthalate) (PBAT) with different loadings to manufacture films to be used as a bioactive, biodegradable mulch to deliver the herbicide to target broadleaf weed species. The biological targeting of the MCPA-PHBV conjugate in the mulch film was investigated under glasshouse conditions using faba bean (Vicia faba) as a selective (nontarget) model crop species having broadleaf morphology. The presence of the MCPA-PHBV conjugate in the biodegradable PBTA/PLA blend was shown to completely suppress the growth of broadleaf weed species while displaying only a mild effect on the growth of the model crop. The degradation of the mulch film under glasshouse conditions was quite slow. The release of the MCPA-PHBV during this process was detected using NMR, GPC, EDS, and DSC analyses, indicating that the majority of the MCPA diffused out after MCPA-PHBV conjugate bond scission. These data provide a strong "proof of concept" and show that this biodegradable, bioactive film is a good candidate for future field applications and may be of wide agricultural applicability.
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Affiliation(s)
- Iwona Kwiecien
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences , M. Curie-Skłodowskiej 34, 41-819 Zabrze, Poland
| | - Grazyna Adamus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences , M. Curie-Skłodowskiej 34, 41-819 Zabrze, Poland
| | - Guozhan Jiang
- School of Sciences, Faculty of Science and Engineering, University of Wolverhampton , Wolverhampton WV1 1SB, United Kingdom
| | - Iza Radecka
- School of Sciences, Faculty of Science and Engineering, University of Wolverhampton , Wolverhampton WV1 1SB, United Kingdom
| | - Timothy C Baldwin
- School of Sciences, Faculty of Science and Engineering, University of Wolverhampton , Wolverhampton WV1 1SB, United Kingdom
| | - Habib R Khan
- School of Sciences, Faculty of Science and Engineering, University of Wolverhampton , Wolverhampton WV1 1SB, United Kingdom
| | - Brian Johnston
- School of Sciences, Faculty of Science and Engineering, University of Wolverhampton , Wolverhampton WV1 1SB, United Kingdom
| | - Valentina Pennetta
- School of Sciences, Faculty of Science and Engineering, University of Wolverhampton , Wolverhampton WV1 1SB, United Kingdom
| | - David Hill
- School of Sciences, Faculty of Science and Engineering, University of Wolverhampton , Wolverhampton WV1 1SB, United Kingdom
| | - Inna Bretz
- Fraunhofer UMSICHT , Osterfelder Str. 3, 46047 Oberhausen, Germany
| | - Marek Kowalczuk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences , M. Curie-Skłodowskiej 34, 41-819 Zabrze, Poland.,School of Sciences, Faculty of Science and Engineering, University of Wolverhampton , Wolverhampton WV1 1SB, United Kingdom
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Irizarry FJ, Kopplin LJ, Salek SS, Adamus G, Saleh M, Biggee K, Lin P, Rosenbaum JT. Recovery of outer retinal laminations on optical coherence tomography after treatment of cancer associated retinopathy. Am J Ophthalmol Case Rep 2017; 8:11-13. [PMID: 29260107 PMCID: PMC5731551 DOI: 10.1016/j.ajoc.2017.08.001] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 07/27/2017] [Accepted: 08/29/2017] [Indexed: 10/31/2022] Open
Abstract
Purpose To report novel optical coherence tomography findings in a case of anti-α-enolase cancer associated retinopathy. Observations An elderly female presented with bilateral decreased vision and a recent diagnosis of ovarian carcinoma. Optical coherence tomography demonstrated bilateral loss of outer retinal structures and macular edema. Serum testing found antibodies against α-enolase and 82-84 kDa proteins. Outer retinal structures showed recovery, macular edema resolved and repeat anti-retinal antibody testing became negative following cancer therapy and topical difluprednate treatment. Conclusions and importance Cancer associated retinopathy is a paraneoplastic disease that results in damage to retinal structures through an autoimmune response. The damage is generally considered to be irreversible; however, in rare cases, such as observed here, retinal structures may demonstrate recovery after treatment.
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Affiliation(s)
- Francisco J Irizarry
- Ponce Health Science University, 388 Zona Ind. Reparada 2, Ponce 00716, Puerto Rico
| | - Laura J Kopplin
- Casey Eye Institute, Oregon Health & Science University, 3375 SW Terwilliger Boulevard, Portland, OR 97239, USA
| | - Sherveen S Salek
- Emory Eye Center, 1365 B Clifton Road NE, Atlanta, GA 30322, USA
| | - Grazyna Adamus
- Casey Eye Institute, Oregon Health & Science University, 3375 SW Terwilliger Boulevard, Portland, OR 97239, USA
| | - Mohamed Saleh
- Casey Eye Institute, Oregon Health & Science University, 3375 SW Terwilliger Boulevard, Portland, OR 97239, USA
| | - Kristin Biggee
- Casey Eye Institute, Oregon Health & Science University, 3375 SW Terwilliger Boulevard, Portland, OR 97239, USA
| | - Phoebe Lin
- Casey Eye Institute, Oregon Health & Science University, 3375 SW Terwilliger Boulevard, Portland, OR 97239, USA
| | - James T Rosenbaum
- Casey Eye Institute, Oregon Health & Science University, 3375 SW Terwilliger Boulevard, Portland, OR 97239, USA.,Legacy Devers Eye Institute, 1040 NW 22nd Avenue, Portland, OR 97210, USA
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Michalak M, Kwiecien I, Kwiecien M, Adamus G, Odelius K, Hakkarainen M, Kurcok P. Diversifying Polyhydroxyalkanoates – End-Group and Side-Chain Functionality. Curr Org Synth 2017. [DOI: 10.2174/1570179414666161115150146] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background: Polyhydroxyalkanoates (PHAs) are a natural origin biodegradable polyesters consisted
of various 3- and 4-hydroxyacid derived repeating units produced by microorganisms as energy storage.
PHAs have been intensively studied due to their biodegradability and biocompatibility enabling their use both
in packaging and agriculture as well as in medicine and pharmacy. PHAs obtained via biotechnological routes
can possess various functional groups in their side chains. However, the diversity in their functionality is limited
due to issues of conservation of functional groups during the polymer formation.
Objective: The review focuses on recent progress in the area of synthesis of PHAs functionalized with various
reactive as well as bioactive end and side groups.
Conclusion: A potent route to resolve the problem of functional group diversity in natural origin PHAs involves
post-polymerization modification, where the desired side groups can be created. On the contrary, synthetically
produced PHA analogs obtained directly via ring-opening polymerization of β-lactones offer various
functionalities at different position throughout the polymer chain. The desired α- and ω-end groups can be introduced
into the polymer chain using specific polymerization, initiation or termination strategies, respectively.
The preferred side chain functionality is obtained by choosing the appropriate β-lactone monomers bearing respective
functional groups. All functional groups may also be subjected to additional chemical modification.
The degradation of PHA as a method for producing functional polymers as well as their possible further applications
are also discussed.
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Affiliation(s)
- Michal Michalak
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Sklodowskiej St., 41-819 Zabrze, Poland
| | - Iwona Kwiecien
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34, M. Curie-Sklodowskiej St., 41-819 Zabrze, Poland
| | - Michal Kwiecien
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34, M. Curie-Sklodowskiej St., 41-819 Zabrze, Poland
| | - Grazyna Adamus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34, M. Curie-Sklodowskiej St., 41-819 Zabrze, Poland
| | - Karin Odelius
- Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, S-10044 Stockholm, Sweden
| | - Minna Hakkarainen
- Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, S-10044 Stockholm, Sweden
| | - Piotr Kurcok
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Sklodowskiej St., 41-819 Zabrze, Poland
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Johnston B, Jiang G, Hill D, Adamus G, Kwiecień I, Zięba M, Sikorska W, Green M, Kowalczuk M, Radecka I. The Molecular Level Characterization of Biodegradable Polymers Originated from Polyethylene Using Non-Oxygenated Polyethylene Wax as a Carbon Source for Polyhydroxyalkanoate Production. Bioengineering (Basel) 2017; 4:bioengineering4030073. [PMID: 28952552 PMCID: PMC5615319 DOI: 10.3390/bioengineering4030073] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [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: 08/02/2017] [Revised: 08/18/2017] [Accepted: 08/24/2017] [Indexed: 12/17/2022] Open
Abstract
There is an increasing demand for bio-based polymers that are developed from recycled materials. The production of biodegradable polymers can include bio-technological (utilizing microorganisms or enzymes) or chemical synthesis procedures. This report demonstrates the corroboration of the molecular structure of polyhydroxyalkanoates (PHAs) obtained by the conversion of waste polyethylene (PE) via non-oxygenated PE wax (N-PEW) as an additional carbon source for a bacterial species. The N-PEW, obtained from a PE pyrolysis reaction, has been found to be a beneficial carbon source for PHA production with Cupriavidus necator H16. The production of the N-PEW is an alternative to oxidized polyethylene wax (O-PEW) (that has been used as a carbon source previously) as it is less time consuming to manufacture and offers fewer industrial applications. A range of molecular structural analytical techniques were performed on the PHAs obtained; which included nuclear magnetic resonance (NMR) and electrospray ionisation tandem mass spectrometry (ESI-MS/MS). Our study showed that the PHA formed from N-PEW contained 3-hydroxybutyrate (HB) with 11 mol% of 3-hydroxyvalerate (HV) units.
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Affiliation(s)
- Brian Johnston
- Wolverhampton School of Biology, Chemistry and Forensic Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK.
| | - Guozhan Jiang
- Wolverhampton School of Biology, Chemistry and Forensic Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK.
| | - David Hill
- Wolverhampton School of Biology, Chemistry and Forensic Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK.
| | - Grazyna Adamus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 41-800 Zabrze, Poland.
| | - Iwona Kwiecień
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 41-800 Zabrze, Poland.
| | - Magdalena Zięba
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 41-800 Zabrze, Poland.
| | - Wanda Sikorska
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 41-800 Zabrze, Poland.
| | - Matthew Green
- Recycling Technologies Ltd., South Marston Industrial Park, Swindon SN3 4WA, UK.
| | - Marek Kowalczuk
- Wolverhampton School of Biology, Chemistry and Forensic Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK.
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 41-800 Zabrze, Poland.
| | - Iza Radecka
- Wolverhampton School of Biology, Chemistry and Forensic Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK.
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Abstract
Importance The diagnostic path presented narrows down the cause of acute vision loss to the cone photoreceptor outer segment and will refocus the search for the cause of similar currently idiopathic conditions. Objective To describe the structural and functional associations found in a patient with acute zonal occult photoreceptor loss. Design, Setting, and Participants A case report of an adolescent boy with acute visual field loss despite a normal fundus examination performed at a university teaching hospital. Main Outcomes and Measures Results of a complete ophthalmic examination, full-field flash electroretinography (ERG) and multifocal ERG, light-adapted achromatic and 2-color dark-adapted perimetry, and microperimetry. Imaging was performed with spectral-domain optical coherence tomography (SD-OCT), near-infrared (NIR) and short-wavelength (SW) fundus autofluorescence (FAF), and NIR reflectance (REF). Results The patient was evaluated within a week of the onset of a scotoma in the nasal field of his left eye. Visual acuity was 20/20 OU, and color vision was normal in both eyes. Results of the fundus examination and of SW-FAF and NIR-FAF imaging were normal in both eyes, whereas NIR-REF imaging showed a region of hyporeflectance temporal to the fovea that corresponded with a dense relative scotoma noted on light-adapted static perimetry in the left eye. Loss in the photoreceptor outer segment detected by SD-OCT co-localized with an area of dense cone dysfunction detected on light-adapted perimetry and multifocal ERG but with near-normal rod-mediated vision according to results of 2-color dark-adapted perimetry. Full-field flash ERG findings were normal in both eyes. The outer nuclear layer and inner retinal thicknesses were normal. Conclusions and Relevance Localized, isolated cone dysfunction may represent the earliest photoreceptor abnormality or a distinct entity within the acute zonal occult outer retinopathy complex. Acute zonal occult outer retinopathy should be considered in patients with acute vision loss and abnormalities on NIR-REF imaging, especially if multimodal imaging supports an intact retinal pigment epithelium and inner retina but an abnormal photoreceptor outer segment.
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Affiliation(s)
- Tomas S Aleman
- Scheie Eye Institute at the Perelman Center for Advanced Medicine, University of Pennsylvania, Philadelphia2Division of Ophthalmology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania3Department of Ophthalmology, University of Pennsylvania, Philadelphia
| | - Harpal S Sandhu
- Scheie Eye Institute at the Perelman Center for Advanced Medicine, University of Pennsylvania, Philadelphia
| | - Leona W Serrano
- Scheie Eye Institute at the Perelman Center for Advanced Medicine, University of Pennsylvania, Philadelphia
| | - Anastasia Traband
- Scheie Eye Institute at the Perelman Center for Advanced Medicine, University of Pennsylvania, Philadelphia
| | - Marisa K Lau
- Scheie Eye Institute at the Perelman Center for Advanced Medicine, University of Pennsylvania, Philadelphia
| | - Grazyna Adamus
- Ocular Immunology Laboratory, Casey Eye Institute, Oregon Health and Science University, Portland
| | - Robert A Avery
- Scheie Eye Institute at the Perelman Center for Advanced Medicine, University of Pennsylvania, Philadelphia2Division of Ophthalmology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania3Department of Ophthalmology, University of Pennsylvania, Philadelphia
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Abstract
The purpose of this study was to examine the effect of the ocular environment on the survival, tumorigenicity, and phenotypic marker expression of immortalized retinal precursor cells transplanted into immunocompetent adult and neonatal Sprague–Dawley rats. E1A-NR.3, a rat immortalized retinal precursor cell culture, was used as an inexhaustible source of experimental graft material. These cells were prelabeled with the fluorescent marker diI (1,1′-dioctadecyl-3,3,3′,3′-tetramethylindocarbocyanine perchlorate) and transplanted intravitreally (50,000 cells per μL) into 11 adult and 31 neonatal Sprague–Dawley rat eyes. At 1 mo posttransplant, animals were sacrificed and retinal tissue sections examined histologically for the presence of grafted cells, signs of tumor formation, and retinal phenotypic marker expression. No obvious signs of tumor formation or rejection were seen in a total of 42 eyes in the immunocompetent hosts. Our results indicate that E1A-NR.3 cells survive at least 1 month in vivo, and can migrate from the vitreous into neuroretinal cell layers. Subpopulations of surviving grafted cells were seen to express photoreceptor markers rhodopsin and recoverin comparably between in vitro and in vivo conditions. However, the number of cells immunoreactive for vimentin and E1A decreased significantly under in vivo conditions. This report represents the first experimental intravitreal transplantation of E1A-immortalized retinal precursor cells into adult and neonatal rats. The intraocular location and environment appears to affect phenotypic expression of surviving grafted cells, especially with respect to vimentin and E1A expression. The fact that E1A-NR.3 cells survived intraocularly at least 1 mo without tumor formation suggests that the cells may continue to be useful for further in vivo studies of experimental retinal transplantation, and effects of histological location on retinal cell phenotype and histogenesis in immunocompetent hosts. © 1998 Elsevier Science Inc.
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Affiliation(s)
- G M Seigel
- Department of Neurobiology and Anatomy, University of Rochester School of Medicine and Dentistry, NY 14642, USA
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Adamus G. Impact of Autoantibodies against Glycolytic Enzymes on Pathogenicity of Autoimmune Retinopathy and Other Autoimmune Disorders. Front Immunol 2017; 8:505. [PMID: 28503176 PMCID: PMC5408022 DOI: 10.3389/fimmu.2017.00505] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [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: 01/31/2017] [Accepted: 04/12/2017] [Indexed: 12/20/2022] Open
Abstract
Autoantibodies (AAbs) against glycolytic enzymes: aldolase, α-enolase, glyceraldehyde-3-phosphate dehydrogenase, and pyruvate kinase are prevalent in sera of patients with blinding retinal diseases, such as paraneoplastic [cancer-associated retinopathy (CAR)] and non-paraneoplastic autoimmune retinopathies, as well as in many other autoimmune diseases. CAR is a degenerative disease of the retina characterized by sudden vision loss in patients with cancer and serum anti-retinal AAbs. In this review, we discuss the widespread serum presence of anti-glycolytic enzyme AAbs and their significance in autoimmune diseases. There are multiple mechanisms responsible for antibody generation, including the innate anti-microbial response, anti-tumor response, or autoimmune response against released self-antigens from damaged, inflamed tissue. AAbs against enolase, GADPH, and aldolase exist in a single patient in elevated titers, suggesting their participation in pathogenicity. The lack of restriction of AAbs to one disease may be related to an increased expression of glycolytic enzymes in various metabolically active tissues that triggers an autoimmune response and generation of AAbs with the same specificity in several chronic and autoimmune conditions. In CAR, the importance of serum anti-glycolytic enzyme AAbs had been previously dismissed, but the retina may be without pathological consequence until a failure of the blood–retinal barrier function, which would then allow pathogenic AAbs access to their retinal targets, ultimately leading to damaging effects.
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Affiliation(s)
- Grazyna Adamus
- School of Medicine, Casey Eye Institute, Oregon Health and Science University, Portland, OR, USA
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Adamus G. Can innate and autoimmune reactivity forecast early and advance stages of age-related macular degeneration? Autoimmun Rev 2017; 16:231-236. [PMID: 28137479 PMCID: PMC5334174 DOI: 10.1016/j.autrev.2017.01.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 11/03/2016] [Indexed: 01/17/2023]
Abstract
Age-related macular degeneration (AMD) is a major cause of central vision loss in persons over 55years of age in developed countries. AMD is a complex disease in which genetic, environmental and inflammatory factors influence its onset and progression. Elevation in serum anti-retinal autoantibodies, plasma and local activation of complement proteins of the alternative pathway, and increase in secretion of proinflammatory cytokines have been seen over the course of disease. Genetic studies of AMD patients confirmed that genetic variants affecting the alternative complement pathway have a major influence on AMD risk. Because the heterogeneity of this disease, there is no sufficient strategy to identify the disease onset and progression sole based eye examination, thus identification of reliable serological biomarkers for diagnosis, prognosis and response to treatment by sampling patient's blood is necessary. This review provides an outline of the current knowledge on possible serological (autoantibodies, complement factors, cytokines, chemokines) and related genetic biomarkers relevant to the pathology of AMD, and discusses their application for prediction of disease activity and prognosis in AMD.
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Affiliation(s)
- Grazyna Adamus
- Ocular Immunology Laboratory, Casey Eye Institute, School of Medicine, Oregon Health and Science University, Portland, OR, USA.
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Khalil IR, Burns ATH, Radecka I, Kowalczuk M, Khalaf T, Adamus G, Johnston B, Khechara MP. Bacterial-Derived Polymer Poly-y-Glutamic Acid (y-PGA)-Based Micro/Nanoparticles as a Delivery System for Antimicrobials and Other Biomedical Applications. Int J Mol Sci 2017; 18:ijms18020313. [PMID: 28157175 PMCID: PMC5343849 DOI: 10.3390/ijms18020313] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Accepted: 01/18/2017] [Indexed: 12/12/2022] Open
Abstract
In the past decade, poly-γ-glutamic acid (γ-PGA)-based micro/nanoparticles have garnered remarkable attention as antimicrobial agents and for drug delivery, owing to their controlled and sustained-release properties, low toxicity, as well as biocompatibility with tissue and cells. γ-PGA is a naturally occurring biopolymer produced by several gram-positive bacteria that, due to its biodegradable, non-toxic and non-immunogenic properties, has been used successfully in the medical, food and wastewater industries. Moreover, its carboxylic group on the side chains can offer an attachment point to conjugate antimicrobial and various therapeutic agents, or to chemically modify the solubility of the biopolymer. The unique characteristics of γ-PGA have a promising future for medical and pharmaceutical applications. In the present review, the structure, properties and micro/nanoparticle preparation methods of γ-PGA and its derivatives are covered. Also, we have highlighted the impact of micro/nanoencapsulation or immobilisation of antimicrobial agents and various disease-related drugs on biodegradable γ-PGA micro/nanoparticles.
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Affiliation(s)
- Ibrahim R Khalil
- Faculty of Science and Engineering, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK.
- Polish Academy of Sciences, Centre of Polymer and Carbon Materials, Zabrze 41-819, Poland.
| | - Alan T H Burns
- Faculty of Science and Engineering, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK.
| | - Iza Radecka
- Faculty of Science and Engineering, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK.
| | - Marek Kowalczuk
- Faculty of Science and Engineering, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK.
- Polish Academy of Sciences, Centre of Polymer and Carbon Materials, Zabrze 41-819, Poland.
| | - Tamara Khalaf
- Faculty of Science and Engineering, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK.
| | - Grazyna Adamus
- Polish Academy of Sciences, Centre of Polymer and Carbon Materials, Zabrze 41-819, Poland.
| | - Brian Johnston
- Faculty of Science and Engineering, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK.
| | - Martin P Khechara
- Faculty of Science and Engineering, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK.
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Chaber P, Kwiecień M, Zięba M, Sobota M, Adamus G. The heterogeneous selective reduction of PHB as a useful method for preparation of oligodiols and surface modification. RSC Adv 2017. [DOI: 10.1039/c7ra06111k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A selective heterogeneous reduction of natural PHB with lithium borohydride as a reducing agent has been described.
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Affiliation(s)
- Paweł Chaber
- Centre of Polymer and Carbon Materials
- Polish Academy of Sciences
- Zabrze 41-800
- Poland
| | - Michał Kwiecień
- Centre of Polymer and Carbon Materials
- Polish Academy of Sciences
- Zabrze 41-800
- Poland
| | - Magdalena Zięba
- Centre of Polymer and Carbon Materials
- Polish Academy of Sciences
- Zabrze 41-800
- Poland
| | - Michał Sobota
- Centre of Polymer and Carbon Materials
- Polish Academy of Sciences
- Zabrze 41-800
- Poland
| | - Grazyna Adamus
- Centre of Polymer and Carbon Materials
- Polish Academy of Sciences
- Zabrze 41-800
- Poland
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Fox AR, Gordon LK, Heckenlively JR, Davis JL, Goldstein DA, Lowder CY, Nussenblatt RB, Butler NJ, Dalal M, Jayasundera T, Smith WM, Lee RW, Adamus G, Chan CC, Hooks JJ, Morgans CW, Detrick B, Sen HN. Reply. Am J Ophthalmol 2016; 170:242-243. [PMID: 27566926 DOI: 10.1016/j.ajo.2016.07.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 07/09/2016] [Indexed: 10/21/2022]
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Fox AR, Gordon LK, Heckenlively JR, Davis JL, Goldstein DA, Lowder CY, Nussenblatt RB, Butler NJ, Dalal M, Jayasundera T, Smith WM, Lee RW, Adamus G, Chan CC, Hooks JJ, Morgans CW, Detrick B, Sen HN. Consensus on the Diagnosis and Management of Nonparaneoplastic Autoimmune Retinopathy Using a Modified Delphi Approach. Am J Ophthalmol 2016; 168:183-190. [PMID: 27210277 DOI: 10.1016/j.ajo.2016.05.013] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 05/09/2016] [Accepted: 05/12/2016] [Indexed: 11/24/2022]
Abstract
PURPOSE To develop diagnostic criteria for nonparaneoplastic autoimmune retinopathy (AIR) through expert panel consensus and to examine treatment patterns among clinical experts. DESIGN Modified Delphi process. METHODS A survey of uveitis specialists in the American Uveitis Society, a face-to-face meeting (AIR Workshop) held at the National Eye Institute, and 2 iterations of expert panel surveys were used in a modified Delphi process. The expert panel consisted of 17 experts, including uveitis specialists and researchers with expertise in antiretinal antibody detection. Supermajority consensus was used and defined as 75% of experts in agreement. RESULTS There was unanimous agreement among experts regarding the categorization of autoimmune retinopathies as nonparaneoplastic and paraneoplastic, including cancer-associated retinopathy and melanoma-associated retinopathy. Diagnostic criteria and tests essential to the diagnosis of nonparaneoplastic AIR and multiple supportive criteria reached consensus. For treatment, experts agreed that corticosteroids and conventional immunosuppressives should be used (prescribed) as first- or second-line treatments, though a consensus agreed that biologics and intravenous immunoglobulin were considered appropriate in the treatment of nonparaneoplastic AIR patients regardless of the stage of disease. Experts agreed that more evidence is needed to treat nonparaneoplastic AIR patients with long-term immunomodulatory therapy and that there is enough equipoise to justify randomized, placebo-controlled trials to determine if nonparaneoplastic AIR patients should be treated with long-term immunomodulatory therapy. Regarding antiretinal antibody detection, consensus agreed that a standardized assay system is needed to detect serum antiretinal antibodies. Consensus agreed that an ideal assay should have a 2-tier design and that Western blot and immunohistochemistry should be the methods used to identify antiretinal antibodies. CONCLUSIONS Consensus was achieved using a modified Delphi process to develop diagnostic criteria for nonparaneoplastic AIR. There is enough equipoise to justify randomized, placebo-controlled trials to determine whether patients with nonparaneoplastic AIR should be treated with long-term immunomodulatory therapy. Efforts to develop a standardized 2-tier assay system for the detection of antiretinal antibodies have been initiated as a result of this study.
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Domagala A, Domagala W, Ledwon P, Musiol M, Janeczek H, Stolarczyk A, Kurcok P, Adamus G, Lapkowski M. N-Oligo(3-hydroxybutyrate)-functionalized polypyrroles: towards bio-erodible conducting copolymers. POLYM INT 2016. [DOI: 10.1002/pi.5190] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Anna Domagala
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; 34 M. Curie-Skłodowskiej Street 41-819 Zabrze Poland
| | - Wojciech Domagala
- Department of Physical Chemistry and Technology of Polymers; Silesian University of Technology; 9 Marcina Strzody Street 44-100 Gliwice Poland
| | - Przemyslaw Ledwon
- Department of Physical Chemistry and Technology of Polymers; Silesian University of Technology; 9 Marcina Strzody Street 44-100 Gliwice Poland
| | - Marta Musiol
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; 34 M. Curie-Skłodowskiej Street 41-819 Zabrze Poland
| | - Henryk Janeczek
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; 34 M. Curie-Skłodowskiej Street 41-819 Zabrze Poland
| | - Agnieszka Stolarczyk
- Department of Physical Chemistry and Technology of Polymers; Silesian University of Technology; 9 Marcina Strzody Street 44-100 Gliwice Poland
| | - Piotr Kurcok
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; 34 M. Curie-Skłodowskiej Street 41-819 Zabrze Poland
| | - Grazyna Adamus
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; 34 M. Curie-Skłodowskiej Street 41-819 Zabrze Poland
| | - Mieczyslaw Lapkowski
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; 34 M. Curie-Skłodowskiej Street 41-819 Zabrze Poland
- Department of Physical Chemistry and Technology of Polymers; Silesian University of Technology; 9 Marcina Strzody Street 44-100 Gliwice Poland
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Musioł M, Sikorska W, Adamus G, Janeczek H, Richert J, Malinowski R, Jiang G, Kowalczuk M. Forensic engineering of advanced polymeric materials. Part III - Biodegradation of thermoformed rigid PLA packaging under industrial composting conditions. Waste Manag 2016; 52:69-76. [PMID: 27103398 DOI: 10.1016/j.wasman.2016.04.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 03/23/2016] [Accepted: 04/13/2016] [Indexed: 06/05/2023]
Abstract
This paper presents a forensic engineering study on the biodegradation behaviour of prototype packaging thermoformed from PLA-extruded film and plain PLA film under industrial composting conditions. Hydrolytic degradation in water was conducted for reference. The effects of composting duration on changes in molar mass, glass transition temperature and degree of crystallinity of the polymeric material were monitored using gel permeation chromatography (GPC) and differential scanning calorimetry (DSC). The chemical structure of water soluble degradation products of the polymeric material was determined using nuclear magnetic resonance (NMR) and electrospray ionization mass spectrometry (ESI-MS). The results show that the biodegradation process is less dependent on the thermoforming process of PLA and more dependent on the composting/degradation conditions that are applied. The increase in the dispersity index, leading to the bimodal molar mass distribution profile, suggests an autocatalytic hydrolysis effect at the early stage of the composting process, during which the bulk hydrolysis mechanism dominantly operates. Both the prototype PLA-packaging and PLA rigid film samples were shown to have a gradual increase in opacity due to an increase in the degree of crystallinity.
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Affiliation(s)
- Marta Musioł
- Polish Academy of Sciences, Centre of Polymer and Carbon Materials, 34 M. Curie-Sklodowska Str., 41-800 Zabrze, Poland.
| | - Wanda Sikorska
- Polish Academy of Sciences, Centre of Polymer and Carbon Materials, 34 M. Curie-Sklodowska Str., 41-800 Zabrze, Poland
| | - Grazyna Adamus
- Polish Academy of Sciences, Centre of Polymer and Carbon Materials, 34 M. Curie-Sklodowska Str., 41-800 Zabrze, Poland
| | - Henryk Janeczek
- Polish Academy of Sciences, Centre of Polymer and Carbon Materials, 34 M. Curie-Sklodowska Str., 41-800 Zabrze, Poland
| | - Jozef Richert
- WW Ekochem LLC, 1 Akacjowa Str., 87-123 Dobrzejewice, Poland
| | - Rafal Malinowski
- Institute for Engineering of Polymer Materials and Dyes, 55 M. Curie-Sklodowska Str., 87-100 Torun, Poland
| | - Guozhan Jiang
- University of Wolverhampton, Faculty of Science and Engineering, Department of Biology, Chemistry and Forensic Science, Wulfruna Street, Wolverhampton WV1 1SB, UK
| | - Marek Kowalczuk
- Polish Academy of Sciences, Centre of Polymer and Carbon Materials, 34 M. Curie-Sklodowska Str., 41-800 Zabrze, Poland; University of Wolverhampton, Faculty of Science and Engineering, Department of Biology, Chemistry and Forensic Science, Wulfruna Street, Wolverhampton WV1 1SB, UK
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Adamus G, Yang S, Weleber RG. Unique epitopes for carbonic anhydrase II autoantibodies related to autoimmune retinopathy and cancer-associated retinopathy. Exp Eye Res 2016; 147:161-168. [DOI: 10.1016/j.exer.2016.05.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 04/11/2016] [Accepted: 05/10/2016] [Indexed: 02/08/2023]
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Yang S, Dizhoor A, Wilson DJ, Adamus G. GCAP1, Rab6, and HSP27: Novel Autoantibody Targets in Cancer-Associated Retinopathy and Autoimmune Retinopathy. Transl Vis Sci Technol 2016; 5:1. [PMID: 27152249 PMCID: PMC4855477 DOI: 10.1167/tvst.5.3.1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [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: 09/08/2015] [Accepted: 03/19/2016] [Indexed: 01/12/2023] Open
Abstract
PURPOSE Autoantibodies (AAbs) with different retinal specificities were reported in cancer-associated retinopathy (CAR) and autoimmune retinopathy (AR). The goal was to identify the small retinal proteins of apparent molecular mass of 23-kDa often recognized by patients' AAbs. METHODS Sera specific for a 23-kDa retinal protein of 173 patients were investigated retrospectively by Western blotting and double immunofluorescence confocal microscopy. A proteomic analysis revealed new 23-kDa protein candidates, including guanylyl cyclase-activating proteins (GCAPs), heat shock protein 27 (HSP27), and Rab6A GTPase (Rab6A). RESULTS Among the cohort of 173 patients, only 68 had anti-recoverin AAbs and the remaining 105 reacted with 4 unique proteins, which were identified as a Rab6A, HSP27, GCAP1, and GCAP2. Confocal images from a double labeling study confirmed the reactivity of AAbs with different types of cells in human retina, consistent with the target protein's respective cellular functions. Patients (62/173) had been diagnosed with various kinds of cancer, including 20% of patients who had anti-recoverin, 11% anti-Rab6A, and 5% anti-HSP27 AAbs. Only 50% of recoverin-seropositive patients had cancer and the individuals with anti-recoverin AAbs had a significantly higher likelihood to be diagnosed with cancer than patients with other anti-23-kDa AAbs. CONCLUSIONS The newly discovered retinal autoantigens may be involved in pathogenicity of CAR and AR. The recognition of AAbs against various retinal proteins associated with autoimmune retinal degeneration broadens the group of proteins related with these entities. TRANSLATIONAL RELEVANCE Patients with anti-recoverin, anti-GCAP1, anti-Rab6A, and anti-HSP27 AAbs represented diverse clinical phenotypes, so the presence of disease-associated AAbs provides important information for molecular diagnosis.
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Affiliation(s)
- Sufang Yang
- Casey Eye Institute, School of Medicine, Oregon Health and Science University, Portland, OR, USA
| | | | - David J Wilson
- Casey Eye Institute, School of Medicine, Oregon Health and Science University, Portland, OR, USA
| | - Grazyna Adamus
- Casey Eye Institute, School of Medicine, Oregon Health and Science University, Portland, OR, USA
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Choi EY, Kim M, Adamus G, Koh HJ, Lee SC. Non-Paraneoplastic Autoimmune Retinopathy: The First Case Report in Korea. Yonsei Med J 2016; 57:527-31. [PMID: 26847311 PMCID: PMC4740551 DOI: 10.3349/ymj.2016.57.2.527] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 03/17/2015] [Accepted: 04/09/2015] [Indexed: 11/27/2022] Open
Abstract
Autoimmune retinopathy (AIR) is an immune-mediated retinopathy, resulting from an immunologic process caused by the aberrant recognition of retinal antigens as autoantigens. The diagnosis of AIR involves the detection of antiretinal antibodies with concurrent clinical and electrophysiological evidence of retinopathy. A 40-year-old patient presented with progressive loss of bilateral vision over several months. A fundus examination was unremarkable. Spectral domain optical coherence tomography revealed a blurred photoreceptor ellipsoid zone at the subfoveal region in both eyes with more prominent disruption in the left eye. Full-field electroretinography (ERG) showed relatively normal rod and cone responses in the right eye, and decreased photopic bwaves with minimal attenuation of a-waves in the left eye. Multifocal ERG demonstrated slightly reduced amplitude of the inner segment ring in the right eye and decreased amplitudes and delayed latencies of all modalities in the left eye. The patient was suspected to have AIR and it was supported by positive Western blots for 23-kDa protein, enolase (46-kDa), aldolase (40-kDa), 62-kDa and 78-kDa proteins and by immunohistochemical staining of human retinal bipolar and ganglion cells. Despite the immunosuppressive treatment, the destruction of the retinal photoreceptors progressed, and immunosuppressive interventions produced very little visual improvement. We report on what is, to the best of our knowledge, the very first case of serologically confirmed nonparaneoplastic AIR in Korea.
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Affiliation(s)
- Eun Young Choi
- Department of Ophthalmology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Min Kim
- Department of Ophthalmology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
| | - Grazyna Adamus
- Ocular Immunology Laboratory, Casey Eye Institute-BRB, Oregon Health & Science University, Portland, OR, USA
| | - Hyoung Jun Koh
- The Institute of Vision Research, Department of Ophthalmology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Sung Chul Lee
- The Institute of Vision Research, Department of Ophthalmology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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Maksymiak M, Bałakier T, Jurczak J, Kowalczuk M, Adamus G. Bioactive (co)oligoesters with antioxidant properties – synthesis and structural characterization at the molecular level. RSC Adv 2016. [DOI: 10.1039/c6ra09870c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Anionic ring opening (co)polymerization of novel β-substituted β-lactones to bioactive (co)oligoesters with antioxidant properties.
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Affiliation(s)
- Magdalena Maksymiak
- Polish Academy of Sciences
- Centre of Polymer and Carbon Materials
- 41-819 Zabrze
- Poland
| | - Tomasz Bałakier
- Institute of Organic Chemistry
- Polish Academy of Sciences
- 01-224 Warsaw
- Poland
| | - Janusz Jurczak
- Institute of Organic Chemistry
- Polish Academy of Sciences
- 01-224 Warsaw
- Poland
| | - Marek Kowalczuk
- Polish Academy of Sciences
- Centre of Polymer and Carbon Materials
- 41-819 Zabrze
- Poland
- School of Biology
| | - Grazyna Adamus
- Polish Academy of Sciences
- Centre of Polymer and Carbon Materials
- 41-819 Zabrze
- Poland
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Maksymiak M, Debowska R, Bazela K, Dzwigalowska A, Orchel A, Jelonek K, Dolegowska B, Kowalczuk M, Adamus G. Designing of Biodegradable and Biocompatible Release and Delivery Systems of Selected Antioxidants Used in Cosmetology. Biomacromolecules 2015; 16:3603-12. [PMID: 26444385 DOI: 10.1021/acs.biomac.5b01065] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Conjugates of antioxidants p-anisic (p-AA) and vanillic (VA) acids with nontoxic, biocompatible, and biodegradedable oligo-(R,S)-(3-hydoxybutyrate) carrier were synthesized, and their structural and biological characterization was performed. The molecular structure of the bioconjugates, in which antioxidants are covalently bonded with oligo(3-hydroxybutyrate) (OHB) chains, has been proven by mass spectrometry supported by NMR. The bioconjugate hydrolytic degradation studies allowed gaining thorough insight into the hydrolysis process and confirmed the release of p-AA and VA. In vitro studies demonstrated that all of the conjugates studied were well tolerated by KB and HaCaT cell lines, as they had no marked cytotoxicity, while conjugates with a relatively short OHB carrier are optimal to support keratinocyte function. The preliminary study of the biological activity confirmed the protective effect of VA-OHB conjugates against H2O2-induced lipid peroxidation in human keratinocytes (HaCaT). It was also demonstrated that the selected bioconjugates can penetrate all layers of the skin, which shows their functionality and opens up their potential application in cosmetology.
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Affiliation(s)
- Magdalena Maksymiak
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences , 34 M. Curie-Sklodowskiej Street, 41-819 Zabrze, Poland
| | - Renata Debowska
- Dr Irena Eris Centre for Science and Research , 107A Pulawska Street, 02-595 Warszawa, Poland
| | - Karolina Bazela
- Dr Irena Eris Centre for Science and Research , 107A Pulawska Street, 02-595 Warszawa, Poland
| | - Agata Dzwigalowska
- Dr Irena Eris Centre for Science and Research , 107A Pulawska Street, 02-595 Warszawa, Poland
| | - Arkadiusz Orchel
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Katowice, Poland, Chair and Department of Biopharmacy, 8 Jednosci Street, 41-208 Sosnowiec, Poland
| | - Katarzyna Jelonek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences , 34 M. Curie-Sklodowskiej Street, 41-819 Zabrze, Poland
| | - Barbara Dolegowska
- Department of Laboratory Diagnostics and Molecular Medicine, Pomeranian Medical University , 72 Powstancow Wielkopolskich Street, 70-111 Szczecin, Poland
| | - Marek Kowalczuk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences , 34 M. Curie-Sklodowskiej Street, 41-819 Zabrze, Poland.,School of Biology, Chemistry and Forensic Science, Faculty of Science and Engineering, University of Wolverhampton , Wulfruna Street, Wolverhampton, WV1 1SB, United Kingdom
| | - Grazyna Adamus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences , 34 M. Curie-Sklodowskiej Street, 41-819 Zabrze, Poland
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van Dijk EHC, van Herpen CML, Marinkovic M, Haanen JBAG, Amundson D, Luyten GPM, Jager MJ, Kapiteijn EHW, Keunen JEE, Adamus G, Boon CJF. Serous Retinopathy Associated with Mitogen-Activated Protein Kinase Kinase Inhibition (Binimetinib) for Metastatic Cutaneous and Uveal Melanoma. Ophthalmology 2015; 122:1907-16. [PMID: 26123090 DOI: 10.1016/j.ophtha.2015.05.027] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [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: 02/19/2015] [Revised: 05/15/2015] [Accepted: 05/15/2015] [Indexed: 01/05/2023] Open
Abstract
PURPOSE To analyze the clinical characteristics of a serous retinopathy associated with mitogen-activated protein kinase kinase (MEK) inhibition with binimetinib treatment for metastatic cutaneous melanoma (CM) and uveal melanoma (UM), and to determine possible pathogenetic mechanisms that may lead to this retinopathy. DESIGN Prospective observational, cohort-based, cross-sectional study. PARTICIPANTS Thirty CM patients and 5 UM patients treated with the MEK inhibitor binimetinib (CM) or a combination of binimetinib and the protein kinase C inhibitor sotrastaurin (UM). METHODS Extensive ophthalmic examination was performed, including Early Treatment of Diabetic Retinopathy Study best-corrected visual acuity, applanation tonometry, slit-lamp examination, indirect ophthalmoscopy, digital color fundus photography, and optical coherence tomography (OCT). In selected cases, additional examinations were performed, including visual field testing and electro-oculography (EOG). Blood samples were obtained from 3 CM patients and 3 UM patients to analyze the presence of autoantibodies against retinal and retinal pigment epithelium (RPE) proteins. MAIN OUTCOME MEASURES Visual symptoms, visual acuity, fundus appearance, characteristics on OCT, fundus autofluorescence (FAF), and EOG. RESULTS Six CM patients (20%) and 2 UM patients (40%) reported visual symptoms during the study. The median time to the onset of symptoms, which were all mild and transient, was 3.5 days (range, <1 hour to 3 weeks). On OCT, subretinal fluid (SRF) was detected in 77% of CM patients and 60% of UM patients. In the 26 patients with SRF, the fovea was affected in 85%. After the start of the medication, an EOG was performed in 19 eyes of 11 patients; 16 of these eyes (84%) developed SRF on OCT. Fifteen of these eyes (94%) showed an abnormal Arden ratio (<1.65). A broad pattern of anti-retinal antibodies was found in 3 CM patients and 2 UM patients tested, whereas anti-RPE antibodies were detected in all 6 tested patients. CONCLUSIONS A time-dependent and reversible serous retinopathy can develop both in patients with metastatic CM and UM treated with binimetinib. A minority of patients develop visual symptoms, which are generally mild and transient. A cause of binimetinib-associated serous retinopathy may be toxicity of medication, but autoantibodies also may be involved.
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Affiliation(s)
- Elon H C van Dijk
- Department of Ophthalmology, Leiden University Medical Center, Leiden, The Netherlands
| | - Carla M L van Herpen
- Department of Medical Oncology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Marina Marinkovic
- Department of Ophthalmology, Leiden University Medical Center, Leiden, The Netherlands; Department of Ophthalmology, Onze Lieve Vrouwe Gasthuis, Amsterdam, The Netherlands
| | - John B A G Haanen
- Division of Medical Oncology, The Netherlands Cancer Institute Antoni van Leeuwenhoek, Amsterdam, The Netherlands
| | - Drake Amundson
- Department of Ophthalmology, Oregon Health and Science University, Portland, Oregon
| | - Gré P M Luyten
- Department of Ophthalmology, Leiden University Medical Center, Leiden, The Netherlands
| | - Martine J Jager
- Department of Ophthalmology, Leiden University Medical Center, Leiden, The Netherlands
| | - Ellen H W Kapiteijn
- Department of Medical Oncology, Leiden University Medical Center, Leiden, The Netherlands
| | - Jan E E Keunen
- Department of Ophthalmology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Grazyna Adamus
- Department of Ophthalmology, Oregon Health and Science University, Portland, Oregon
| | - Camiel J F Boon
- Department of Ophthalmology, Leiden University Medical Center, Leiden, The Netherlands.
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