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Zakharchenko A, Rock CA, Thomas TE, Keeney S, Hall EJ, Takano H, Krieger AM, Ferrari G, Levy RJ. Inhibition of advanced glycation end product formation and serum protein infiltration in bioprosthetic heart valve leaflets: Investigations of anti-glycation agents and anticalcification interactions with ethanol pretreatment. Biomaterials 2022; 289:121782. [PMID: 36099713 PMCID: PMC10015409 DOI: 10.1016/j.biomaterials.2022.121782] [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: 05/10/2022] [Revised: 08/22/2022] [Accepted: 08/29/2022] [Indexed: 11/16/2022]
Abstract
Bioprosthetic heart valves (BHV) fabricated from heterograft tissue, such as glutaraldehyde pretreated bovine pericardium (BP), are the most frequently used heart valve replacements. BHV durability is limited by structural valve degeneration (SVD), mechanistically associated with calcification, advanced glycation end products (AGE), and serum protein infiltration. We investigated the hypothesis that anti-AGE agents, Aminoguanidine, Pyridoxamine [PYR], and N-Acetylcysteine could mitigate AGE-serum protein SVD mechanisms in vitro and in vivo, and that these agents could mitigate calcification or demonstrate anti-calcification interactions with BP pretreatment with ethanol. In vitro, each of these agents significantly inhibited AGE-serum protein infiltration in BP. However, in 28-day rat subdermal BP implants only orally administered PYR demonstrated significant inhibition of AGE and serum protein uptake. Furthermore, BP PYR preincubation of BP mitigated AGE-serum protein SVD mechanisms in vitro, and demonstrated mitigation of both AGE-serum protein uptake and reduced calcification in vivo in 28-day rat subdermal BP explants. Inhibition of BP calcification as well as inhibition of AGE-serum protein infiltration was observed in 28-day rat subdermal BP explants pretreated with ethanol followed by PYR preincubation. In conclusion, AGE-serum protein and calcification SVD pathophysiology are significantly mitigated by both PYR oral therapy and PYR and ethanol pretreatment of BP.
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Affiliation(s)
- Andrey Zakharchenko
- The Pediatric Heart Valve Center, Division of Cardiology, Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - Christopher A Rock
- The Pediatric Heart Valve Center, Division of Cardiology, Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - Tina E Thomas
- The Pediatric Heart Valve Center, Division of Cardiology, Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - Samuel Keeney
- The Pediatric Heart Valve Center, Division of Cardiology, Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - Emily J Hall
- The Pediatric Heart Valve Center, Division of Cardiology, Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - Hajime Takano
- Division of Neurology, Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - Abba M Krieger
- Department of Statistics, The Wharton School, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Giovanni Ferrari
- Departments of Surgery and Biomedical Engineering, Columbia University, New York, NY, 10032, USA
| | - Robert J Levy
- The Pediatric Heart Valve Center, Division of Cardiology, Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA.
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Rock CA, Keeney S, Zakharchenko A, Takano H, Spiegel DA, Krieger AM, Ferrari G, Levy RJ. Model studies of advanced glycation end product modification of heterograft biomaterials: The effects of in vitro glucose, glyoxal, and serum albumin on collagen structure and mechanical properties. Acta Biomater 2021; 123:275-285. [PMID: 33444798 DOI: 10.1016/j.actbio.2020.12.053] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 05/20/2020] [Revised: 12/17/2020] [Accepted: 12/22/2020] [Indexed: 01/01/2023]
Abstract
Glutaraldehyde cross-linked heterograft tissues, bovine pericardium (BP) or porcine aortic valves, are the leaflet materials in bioprosthetic heart valves (BHV) used in cardiac surgery for heart valve disease. BHV fail due to structural valve degeneration (SVD), often with calcification. Advanced glycation end products (AGE) are post-translational, non-enzymatic reaction products from sugars reducing proteins. AGE are present in SVD-BHV clinical explants and are not detectable in un-implanted BHV. Prior studies modeled BP-AGE formation in vitro with glyoxal, a glucose breakdown product, and serum albumin. However, glucose is the most abundant AGE precursor. Thus, the present studies investigated the hypothesis that BHV susceptibility to glucose related AGE, together with serum proteins, results in deterioration of collagen structure and mechanical properties. In vitro experiments studied AGE formation in BP and porcine collagen sponges (CS) comparing 14C-glucose and 14C-glyoxal with and without bovine serum albumin (BSA). Glucose incorporation occurred at a significantly lower level than glyoxal (p<0.02). BSA co-incubations demonstrated reduced glyoxal and glucose uptake by both BP and CS. BSA incubation caused a significant increase in BP mass, enhanced by glyoxal co-incubation. Two-photon microscopy of BP showed BSA induced disruption of collagen structure that was more severe with glucose or glyoxal co-incubation. Uniaxial testing of CS demonstrated that glucose or glyoxal together with BSA compared to controls, caused accelerated deterioration of viscoelastic relaxation, and increased stiffness over a 28-day time course. In conclusion, glucose, glyoxal and BSA uniquely contribute to AGE-mediated disruption of heterograft collagen structure and deterioration of mechanical properties.
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Affiliation(s)
- Christopher A Rock
- Division of Cardiology, Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, United States
| | - Samuel Keeney
- Division of Cardiology, Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, United States
| | - Andrey Zakharchenko
- Division of Cardiology, Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, United States
| | - Hajime Takano
- Division of Neurology, Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, United States
| | - David A Spiegel
- Department of Chemistry, Yale University, New Haven, CT, 06520, United States
| | - Abba M Krieger
- Department of Statistics, The Wharton School, University of Pennsylvania, Philadelphia, PA, 19104, United States
| | - Giovanni Ferrari
- Departments of Surgery and Biomedical Engineering, Columbia University, New York, NY, 10032, United States
| | - Robert J Levy
- Division of Cardiology, Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, United States.
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Frasca A, Xue Y, Kossar AP, Keeney S, Rock C, Zakharchenko A, Streeter M, Gorman RC, Grau JB, George I, Bavaria JE, Krieger A, Spiegel DA, Levy RJ, Ferrari G. Glycation and Serum Albumin Infiltration Contribute to the Structural Degeneration of Bioprosthetic Heart Valves. JACC Basic Transl Sci 2020; 5:755-766. [PMID: 32875167 PMCID: PMC7452200 DOI: 10.1016/j.jacbts.2020.06.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 06/02/2020] [Accepted: 06/02/2020] [Indexed: 12/31/2022]
Abstract
Two novel and interacting mechanisms contributing to BHV SVD are reported: glycation and serum albumin infiltration. Glycation product formation and serum albumin deposition were observed in 45 clinical BHV explanted due to SVD as well as BHV tissue subcutaneously implanted in rats. In vitro exposure to glycation and serum albumin elicited collagen network misalignment similar to that seen in clinical and rat explant BHV tissue. Glycation was sufficient to impair BHV hydrodynamic function in ISO-5840-compliant pulse duplication testing and concomitant serum albumin infiltration exacerbated these effects.
Valvular heart diseases are associated with significant cardiovascular morbidity and mortality, and often require surgical and/or percutaneous repair or replacement. Valve replacement is limited to mechanical and biological prostheses, the latter of which circumvent the need for lifelong anticoagulation but are subject to structural valve degeneration (SVD) and failure. Although calcification is heavily studied, noncalcific SVD, which represent roughly 30% of BHV failures, is relatively underinvestigated. This original work establishes 2 novel and interacting mechanisms—glycation and serum albumin incorporation—that occur in clinical valves and are sufficient to induce hallmarks of structural degeneration as well as functional deterioration.
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Key Words
- AGE, advanced glycation end product
- BHV, bioprosthetic heart valve
- BP, bovine pericardium
- CML, N-carboxymethyl-lysine
- EOA, effective orifice area
- HSA, human serum albumin
- IHC, immunohistochemistry
- PBS, phosphate-buffered saline
- SAVR, surgical aortic valve replacement
- SHG, second harmonic generation
- SVD, structural valve degeneration
- TAVR, transcatheter aortic valve replacement
- advanced glycation end products
- aortic valve disease
- biomaterial
- bioprosthetic heart valve
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Affiliation(s)
- Antonio Frasca
- Department of Surgery, Columbia University, New York, New York
| | - Yingfei Xue
- Department of Surgery, Columbia University, New York, New York
| | | | - Samuel Keeney
- Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Christopher Rock
- Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Andrey Zakharchenko
- Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Matthew Streeter
- Department of Chemistry, Yale University, New Haven, Connecticut
| | - Robert C Gorman
- Department of Surgery, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Juan B Grau
- Ottawa Heart Institute, Ottawa, Ontario, Canada
| | - Isaac George
- Department of Surgery, Columbia University, New York, New York
| | - Joseph E Bavaria
- Department of Surgery, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Abba Krieger
- Department of Surgery, University of Pennsylvania, Philadelphia, Pennsylvania
| | - David A Spiegel
- Department of Chemistry, Yale University, New Haven, Connecticut
| | - Robert J Levy
- Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
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Romikh V, Zakharchenko A, Borisenko L, Panteleev V, Romikh P, Apolikhin O, Sivkov A. Low urinary tract symptoms nature in women after radical hysterectomy. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33034-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Filipov Y, Zakharchenko A, Minko S, Katz E. Magneto‐Controlled Biocatalytic Cascades with Logically Processed Input Signals – Substrate Channeling versus Free Diffusion. Chemphyschem 2018; 19:3035-3043. [DOI: 10.1002/cphc.201800851] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Yaroslav Filipov
- Department of Chemistry and Biomolecular Science Clarkson University Potsdam NY 13699 USA
| | | | - Sergiy Minko
- Nanostructured Materials Lab University of Georgia Athens GA 30602 USA
| | - Evgeny Katz
- Department of Chemistry and Biomolecular Science Clarkson University Potsdam NY 13699 USA
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Bakshi SF, Guz N, Zakharchenko A, Deng H, Tumanov AV, Woodworth CD, Minko S, Kolpashchikov DM, Katz E. Nanoreactors based on DNAzyme-functionalized magnetic nanoparticles activated by magnetic field. Nanoscale 2018; 10:1356-1365. [PMID: 29297526 PMCID: PMC5773386 DOI: 10.1039/c7nr08581h] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A new biomimetic nanoreactor design, MaBiDz, is presented based on a copolymer brush in combination with superparamagnetic nanoparticles. This cellular nanoreactor features two species of magnetic particles, each functionalized with two components of a binary deoxyribozyme system. In the presence of a target mRNA analyte and a magnetic field, the nanoreactor is assembled to form a biocompartment enclosed by the polymeric brush that enables catalytic function of the binary deoxyribozyme with enhanced kinetics. MaBiDz was demonstrated here as a cellular sensor for rapid detection and imaging of a target mRNA biomarker for metastatic breast cancer, and its function shows potential to be expanded as a biomimetic organelle that can downregulate the activity of a target mRNA biomarker.
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Affiliation(s)
- Saira F Bakshi
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY 13699-5810, USA.
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Bakshi SF, Guz N, Zakharchenko A, Deng H, Tumanov AV, Woodworth CD, Minko S, Kolpashchikov DM, Katz E. Magnetic Field-Activated Sensing of mRNA in Living Cells. J Am Chem Soc 2017; 139:12117-12120. [PMID: 28817270 PMCID: PMC5654739 DOI: 10.1021/jacs.7b06022] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [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: 01/03/2023]
Abstract
Detection of specific mRNA in living cells has attracted significant attention in the past decade. Probes that can be easily delivered into cells and activated at the desired time can contribute to understanding translation, trafficking and degradation of mRNA. Here we report a new strategy termed magnetic field-activated binary deoxyribozyme (MaBiDZ) sensor that enables both efficient delivery and temporal control of mRNA sensing by magnetic field. MaBiDZ uses two species of magnetic beads conjugated with different components of a multicomponent deoxyribozyme (DZ) sensor. The DZ sensor is activated only in the presence of a specific target mRNA and when a magnetic field is applied. Here we demonstrate that MaBiDZ sensor can be internalized in live MCF-7 breast cancer cells and activated by a magnetic field to fluorescently report the presence of specific mRNA, which are cancer biomarkers.
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Affiliation(s)
- Saira F Bakshi
- Department of Chemistry and Biomolecular Science, Clarkson University , Potsdam, New York 13699-5810, United States
| | - Nataliia Guz
- Department of Chemistry and Biomolecular Science, Clarkson University , Potsdam, New York 13699-5810, United States
| | - Andrey Zakharchenko
- Nanostructured Materials Lab, University of Georgia , Athens, Georgia 30602, United States
| | - Han Deng
- Department of Biology, Clarkson University , Potsdam, New York 13699-5810, United States
| | - Alexei V Tumanov
- Department of Microbiology, Immunology, and Molecular Genetics, University of Texas Health Science Center at San Antonio , 7703 Floyd Curl Drive, San Antonio, Texas 78229-3900, United States
| | - Craig D Woodworth
- Department of Biology, Clarkson University , Potsdam, New York 13699-5810, United States
| | - Sergiy Minko
- Nanostructured Materials Lab, University of Georgia , Athens, Georgia 30602, United States
| | - Dmitry M Kolpashchikov
- Chemistry Department, University of Central Florida , 4000 Central Florida Boulevard, Orlando, Florida 32816-2366, United States.,Laboratory of Solution Chemistry of Advanced Materials and Technologies, ITMO University , Lomonosova St. 9, 191002 St. Petersburg, Russian Federation
| | - Evgeny Katz
- Department of Chemistry and Biomolecular Science, Clarkson University , Potsdam, New York 13699-5810, United States
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Gamella M, Zakharchenko A, Guz N, Masi M, Minko S, Kolpashchikov DM, Iken H, Poghossian A, Schöning MJ, Katz E. DNA Computing Systems Activated by Electrochemically-triggered DNA Release from a Polymer-brush-modified Electrode Array. ELECTROANAL 2017; 29:398-408. [PMID: 29379265 PMCID: PMC5786385 DOI: 10.1002/elan.201600389] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 06/23/2016] [Indexed: 12/23/2022]
Abstract
An array of four independently wired indium tin oxide (ITO) electrodes was used for electrochemically stimulated DNA release and activation of DNA-based Identity, AND and XOR logic gates. Single-stranded DNA molecules were loaded on the mixed poly(N,N-di-methylaminoethyl methacrylate) (PDMAEMA)/poly-(methacrylic acid) (PMAA) brush covalently attached to the ITO electrodes. The DNA deposition was performed at pH 5.0 when the polymer brush is positively charged due to protonation of tertiary amino groups in PDMAE-MA, thus resulting in electrostatic attraction of the negatively charged DNA. By applying electrolysis at -1.0 V(vs. Ag/AgCl reference) electrochemical oxygen reduction resulted in the consumption of hydrogen ions and local pH increase near the electrode surface. The process resulted in recharging the polymer brush to the negative state due to dissociation of carboxylic groups of PMAA, thus repulsing the negatively charged DNA and releasing it from the electrode surface. The DNA release was performed in various combinations from different electrodes in the array assembly. The released DNA operated as input signals for activation of the Boolean logic gates. The developed system represents a step forward in DNA computing, combining for the first time DNA chemical processes with electronic input signals.
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Affiliation(s)
- Maria Gamella
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY 13699-5810, USA, http://people.clarkson.edu/~ekatz/
| | - Andrey Zakharchenko
- Nanostructured Materials Lab, The University of Georgia, Athens, GA 30602, USA
| | - Nataliia Guz
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY 13699-5810, USA, http://people.clarkson.edu/~ekatz/
| | - Madeline Masi
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY 13699-5810, USA, http://people.clarkson.edu/~ekatz/
| | - Sergiy Minko
- Nanostructured Materials Lab, The University of Georgia, Athens, GA 30602, USA
| | - Dmitry M. Kolpashchikov
- Chemistry Department, University of Central Florida, 4000 Central Florida Boulevard, Orlando, FL 32816-2366, USA
| | - Heiko Iken
- Institute of Nano- and Biotechnologies, Aachen University of Applied Sciences, Campus Jülich, Heinrich-Muβmann-Str. 1, D-52428 Jülich, Germany
| | - Arshak Poghossian
- Institute of Nano- and Biotechnologies, Aachen University of Applied Sciences, Campus Jülich, Heinrich-Muβmann-Str. 1, D-52428 Jülich, Germany
- Institute of Bio- and Nanosystems, Research Centre Jülich, GmbH, D-52425 Jülich Germany
| | - Michael J. Schöning
- Institute of Nano- and Biotechnologies, Aachen University of Applied Sciences, Campus Jülich, Heinrich-Muβmann-Str. 1, D-52428 Jülich, Germany
- Institute of Bio- and Nanosystems, Research Centre Jülich, GmbH, D-52425 Jülich Germany
| | - Evgeny Katz
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY 13699-5810, USA, http://people.clarkson.edu/~ekatz/
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Zakharchenko A, Kaitoukov Y, Vinnik Y, Tradi F, Sapoval M, Sielezneff I, Galkin E, Vidal V. Safety and efficacy of superior rectal artery embolization with particles and metallic coils for the treatment of hemorrhoids (Emborrhoid technique). Diagn Interv Imaging 2016; 97:1079-1084. [PMID: 27597728 DOI: 10.1016/j.diii.2016.08.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Revised: 06/23/2016] [Accepted: 08/01/2016] [Indexed: 11/29/2022]
Abstract
PURPOSE The purpose of this study was to comprehensively evaluate the short-term outcomes after percutaneous embolization of the superior rectal artery (SRA) with metallic coils and particles for the management of hemorrhoids. MATERIALS AND METHODS Forty patients (15 men, 25 women) with a mean age of 35±5 years (SD) (range: 25-65 years) were prospectively enrolled. All patients had symptomatic hemorrhoids. The distribution of internal hemorrhoids was as follows: grade I (n=6, 16%); grade II (n=28, 69%) and grade III (n=6; 15%). All patients had percutaneous embolization of the SRA with metallic coils and synthetic polyvinyl alcohol particles. Follow-up evaluation included clinical examination, rectoscopy, histopathological analysis of rectal mucosa, duplex Doppler blood flow quantification, electromyography, sphincterometry of the anal sphincter and analysis of patient satisfaction. RESULTS No immediate complications were observed and no patients had anal pain syndrome after embolization. Hemorrhoids showed a 43% size reduction after embolization (P<0.05). Taking into account the symptom resolutions such as irritation, discomfort, bloody discharge and pain, satisfaction was observed in 5/6 (83%) patients with grade III hemorrhoids and 32/34 patients (94%) with grades I-II hemorrhoids. One month after embolization, anal sphincter contractility normalized and no changes in anal electromyography were observed. Blood flow in the hemorrhoidal plexus dropped from 109±1.2ml/min/100g (SD) before treatment to 60.2±4.4ml/min/100g (SD) (P<0.05) the day after embolization and remained unchanged one month after embolization. CONCLUSION Our study demonstrates that embolization of SRA with particle and coils does not lead to ischemia in patients with symptomatic hemorrhoids. Short-term results with regard to symptom management for hemorrhoidal disease are very encouraging and should stimulate further prospective and multicenter studies.
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Affiliation(s)
- A Zakharchenko
- Department of general surgery, Krasnoyarsk state medical university, Krasnoyarsk Railwey clinical hospital, Krasnoyarsk, Russia
| | - Y Kaitoukov
- Department of diagnostic radiology and radio-oncology, centre hospitalier de l'université de Montréal, Montreal, Canada
| | - Y Vinnik
- Department of general surgery, Krasnoyarsk state medical university, Krasnoyarsk Railwey clinical hospital, Krasnoyarsk, Russia
| | - F Tradi
- Department of vascular and interventional radiology, hôpital de la Timone, 13005 Marseille, France
| | - M Sapoval
- Department of interventional radiology, hôpital Georges-Pompidou, 75015 Paris, France
| | - I Sielezneff
- Department of visceral surgery, Aix-Marseille university, hôpital de la Timone, 13005 Marseille, France
| | - E Galkin
- Department of vascular surgery and interventional radiology, Siberian clinical center FMBA, Krasnoyarsk, Russia
| | - V Vidal
- Department of vascular and interventional radiology, hôpital de la Timone, 13005 Marseille, France.
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Samaratunga A, Kudina O, Nahar N, Zakharchenko A, Minko S, Voronov A, Pryor SW. Modeling the Effect of pH and Temperature for Cellulases Immobilized on Enzymogel Nanoparticles. Appl Biochem Biotechnol 2015; 176:1114-30. [DOI: 10.1007/s12010-015-1633-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 04/20/2015] [Indexed: 11/28/2022]
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Mailloux S, Guz N, Zakharchenko A, Minko S, Katz E. Majority and minority gates realized in enzyme-biocatalyzed systems integrated with logic networks and interfaced with bioelectronic systems. J Phys Chem B 2014; 118:6775-84. [PMID: 24873717 DOI: 10.1021/jp504057u] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Biocatalytic reactions operating in parallel and resulting in reduction of NAD(+) or oxidation of NADH were used to mimic 3-input majority and minority logic gates, respectively. The substrates corresponding to the enzyme reactions were used as the input signals. When the input signals were applied at their high concentrations, defined as logic 1 input values, the corresponding biocatalytic reactions were activated, resulting in changes of the NADH concentration defined as the output signal. The NADH concentration changes were dependent on the number of parallel reactions activated by the input signals. The absence of the substrates, meaning their logic 0 input values, kept the reactions mute with no changes in the NADH concentration. In the system mimicking the majority function, the enzyme-biocatalyzed reactions resulted in a higher production of NADH when more than one input signal was applied at the logic 1 value. Another system mimicking the minority function consumed more NADH, thus leaving a smaller residual output signal, when more than one input signal was applied at the logic 1 value. The performance of the majority gate was improved by processing the output signal through a filter system in which another biocatalytic reaction consumed a fraction of the output signal, thus reducing its physical value to zero when the logic 0 value was obtained. The majority gate was integrated with a preceding AND logic gate to illustrate the possibility of complex networks. The output signal, NADH, was also used to activate a process mimicking drug release, thus illustrating the use of the majority gate in decision-making biomedical systems. The 3-input majority gate was also used as a switchable AND/OR gate when one of the input signals was reserved as a command signal, switching the logic operation for processing of the other two inputs. Overall, the designed majority and minority logic gates demonstrate novel functions of biomolecular information processing systems.
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Affiliation(s)
- Shay Mailloux
- Department of Chemistry and Biomolecular Science, Clarkson University , Potsdam, New York 13699-5810, United States
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Kudina O, Zakharchenko A, Trotsenko O, Tokarev A, Ionov L, Stoychev G, Puretskiy N, Pryor SW, Voronov A, Minko S. Titelbild: Highly Efficient Phase Boundary Biocatalysis with Enzymogel Nanoparticles (Angew. Chem. 2/2014). Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201309903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Kudina O, Zakharchenko A, Trotsenko O, Tokarev A, Ionov L, Stoychev G, Puretskiy N, Pryor SW, Voronov A, Minko S. Cover Picture: Highly Efficient Phase Boundary Biocatalysis with Enzymogel Nanoparticles (Angew. Chem. Int. Ed. 2/2014). Angew Chem Int Ed Engl 2014. [DOI: 10.1002/anie.201309903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Kudina O, Zakharchenko A, Trotsenko O, Tokarev A, Ionov L, Stoychev G, Puretskiy N, Pryor SW, Voronov A, Minko S. Highly Efficient Phase Boundary Biocatalysis with Enzymogel Nanoparticles. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201306831] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [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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Kudina O, Zakharchenko A, Trotsenko O, Tokarev A, Ionov L, Stoychev G, Puretskiy N, Pryor SW, Voronov A, Minko S. Highly Efficient Phase Boundary Biocatalysis with Enzymogel Nanoparticles. Angew Chem Int Ed Engl 2013; 53:483-7. [DOI: 10.1002/anie.201306831] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Revised: 10/03/2013] [Indexed: 11/06/2022]
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