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Steitz M, Zouhair S, Khan MB, Breitenstein-Attach A, Fritsch K, Tuladhar SR, Wulsten D, Wolkers WF, Sun X, Hao Y, Emeis J, Lange HE, Berger F, Schmitt B. A Glutaraldehyde-Free Crosslinking Method for the Treatment of Collagen-Based Biomaterials for Clinical Application. Bioengineering (Basel) 2023; 10:1247. [PMID: 38002371 PMCID: PMC10669889 DOI: 10.3390/bioengineering10111247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 10/19/2023] [Accepted: 10/20/2023] [Indexed: 11/26/2023] Open
Abstract
Biological bioprostheses such as grafts, patches, and heart valves are often derived from biological tissue like the pericardium. These bioprostheses can be of xenogenic, allogeneic, or autologous origin. Irrespective of their origin, all types are pre-treated via crosslinking to render the tissue non-antigenic and mechanically strong or to minimize degradation. The most widely used crosslinking agent is glutaraldehyde. However, glutaraldehyde-treated tissue is prone to calcification, inflammatory degradation, and mechanical injury, and it is incapable of matrix regeneration, leading to structural degeneration over time. In this work, we are investigating an alternative crosslinking method for an intraoperative application. The treated tissue's crosslinking degree was evaluated by differential scanning calorimetry. To confirm the findings, a collagenase assay was conducted. Uniaxial tensile testing was used to assess the tissue's mechanical properties. To support the findings, the treated tissue was visualized using two-photon microscopy. Additionally, fourier transform infrared spectroscopy was performed to study the overall protein secondary structure. Finally, a crosslinking procedure was identified for intraoperative processing. The samples showed a significant increase in thermal and enzymatic stability after treatment compared to the control, with a difference of up to 22.2 °C and 100%, respectively. Also, the tissue showed similar biomechanics to glutaraldehyde-treated tissue, showing greater extensibility, a higher failure strain, and a lower ultimate tensile strength than the control. The significant difference in the structure band ratio after treatment is proof of the introduction of additional crosslinks compared to the untreated control with regard to differences in the amide-I region. The microscopic images support these findings, showing an alteration of the fiber orientation after treatment. For collagen-based biomaterials, such as pericardial tissue, the novel phenolic crosslinking agent proved to be an equivalent alternative to glutaraldehyde regarding tissue characteristics. Although long-term studies must be performed to investigate superiority in terms of longevity and calcification, our novel crosslinking agent can be applied in concentrations of 1.5% or 2.0% for the treatment of biomaterials.
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Affiliation(s)
- Marvin Steitz
- Department of Pediatric Cardiology and Congenital Heart Disease, German Heart Center Berlin (Charité), D-13353 Berlin, Germany
- Department of Pediatric Cardiology and Congenital Heart Disease, Charité University Medicine Berlin, D-13353 Berlin, Germany
- German Centre for Cardiovascular Research, D-10785 Berlin, Germany
| | - Sabra Zouhair
- Department of Pediatric Cardiology and Congenital Heart Disease, Charité University Medicine Berlin, D-13353 Berlin, Germany
| | - Mahamuda Badhon Khan
- Department of Pediatric Cardiology and Congenital Heart Disease, Charité University Medicine Berlin, D-13353 Berlin, Germany
| | - Alexander Breitenstein-Attach
- Department of Pediatric Cardiology and Congenital Heart Disease, German Heart Center Berlin (Charité), D-13353 Berlin, Germany
- Department of Pediatric Cardiology and Congenital Heart Disease, Charité University Medicine Berlin, D-13353 Berlin, Germany
- German Centre for Cardiovascular Research, D-10785 Berlin, Germany
| | - Katharina Fritsch
- Department Dynamics and Transport in Quantum Materials, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, D-14109 Berlin, Germany
| | - Sugat Ratna Tuladhar
- Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, University of Veterinary Medicine Hanover, D-30625 Hannover, Germany
| | - Dag Wulsten
- Julius Wolff Institute—Center for Musculoskeletal Biomechanics and Regeneration, D-13353 Berlin, Germany
| | - Willem-Frederik Wolkers
- Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, University of Veterinary Medicine Hanover, D-30625 Hannover, Germany
| | - Xiaolin Sun
- Department of Pediatric Cardiology and Congenital Heart Disease, German Heart Center Berlin (Charité), D-13353 Berlin, Germany
- German Centre for Cardiovascular Research, D-10785 Berlin, Germany
| | - Yimeng Hao
- Department of Pediatric Cardiology and Congenital Heart Disease, Charité University Medicine Berlin, D-13353 Berlin, Germany
| | - Jasper Emeis
- Department of Pediatric Cardiology and Congenital Heart Disease, Charité University Medicine Berlin, D-13353 Berlin, Germany
| | - Hans-E. Lange
- Department of Pediatric Cardiology and Congenital Heart Disease, Charité University Medicine Berlin, D-13353 Berlin, Germany
| | - Felix Berger
- Department of Pediatric Cardiology and Congenital Heart Disease, German Heart Center Berlin (Charité), D-13353 Berlin, Germany
- Department of Pediatric Cardiology and Congenital Heart Disease, Charité University Medicine Berlin, D-13353 Berlin, Germany
- German Centre for Cardiovascular Research, D-10785 Berlin, Germany
| | - Boris Schmitt
- Department of Pediatric Cardiology and Congenital Heart Disease, German Heart Center Berlin (Charité), D-13353 Berlin, Germany
- Department of Pediatric Cardiology and Congenital Heart Disease, Charité University Medicine Berlin, D-13353 Berlin, Germany
- German Centre for Cardiovascular Research, D-10785 Berlin, Germany
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Ladeira C, Araújo R, Ramalhete L, Teixeira H, Calado CRC. Blood molecular profile to predict genotoxicity from exposure to antineoplastic drugs. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2023; 891:503681. [PMID: 37770138 DOI: 10.1016/j.mrgentox.2023.503681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 08/07/2023] [Accepted: 08/10/2023] [Indexed: 10/03/2023]
Abstract
Genotoxicity is an important information that should be included in human biomonitoring programmes. However, the usually applied cytogenetic assays are laborious and time-consuming, reason why it is critical to develop rapid and economic new methods. The aim of this study was to evaluate if the molecular profile of frozen whole blood, acquired by Fourier Transform Infrared (FTIR) spectroscopy, allows to assess genotoxicity in occupational exposure to antineoplastic drugs, as obtained by the cytokinesis-block micronucleus assay. For that purpose, 92 samples of peripheral blood were studied: 46 samples from hospital professionals occupationally exposed to antineoplastic drugs and 46 samples from workers in academia without exposure (controls). It was first evaluated the metabolome from frozen whole blood by methanol precipitation of macromolecules as haemoglobin, followed by centrifugation. The metabolome molecular profile resulted in 3 ratios of spectral bands, significantly different between the exposed and non-exposed group (p < 0.01) and a spectral principal component-linear discriminant analysis (PCA-LDA) model enabling to predict genotoxicity from exposure with 73 % accuracy. After optimization of the dilution degree and solution used, it was possible to obtain a higher number of significant ratios of spectral bands, i.e., 10 ratios significantly different (p < 0.001), highlighting the high sensitivity and specificity of the method. Indeed, the PCA-LDA model, based on the molecular profile of whole blood, enabled to predict genotoxicity from the exposure with an accuracy, sensitivity, and specificity of 92 %, 93 % and 91 %, respectively. All these parameters were achieved based on 1 μL of frozen whole blood, in a high-throughput mode, i.e., based on the simultaneous analysis of 92 samples, in a simple and economic mode. In summary, it can be conclude that this method presents a very promising potential for high-dimension screening of exposure to genotoxic substances.
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Affiliation(s)
- Carina Ladeira
- H&TRC - Health & Technology Research Center, Escola Superior de Tecnologia da Saúde de Lisboa (ESTeSL), Instituto Politécnico de Lisboa, Avenida D. João II, lote 4.69.01, Parque das Nações, 1990-096 Lisboa, Portugal; NOVA National School of Public Health, Public Health Research Centre, Universidade NOVA de Lisboa, Lisbon, Portugal; Comprehensive Health Research Center (CHRC), Universidade NOVA de Lisboa, Portugal.
| | - Rúben Araújo
- Comprehensive Health Research Center (CHRC), Universidade NOVA de Lisboa, Portugal; ISEL - Instituto Superior de Engenharia de Lisboa, Instituto Politécnico de Lisboa, R. Conselheiro Emidio Navarro 1, 1959‑007 Lisboa, Portugal; NOVA Medical School, Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, 1169-056 Lisbon, Portugal
| | - Luís Ramalhete
- ISEL - Instituto Superior de Engenharia de Lisboa, Instituto Politécnico de Lisboa, R. Conselheiro Emidio Navarro 1, 1959‑007 Lisboa, Portugal; Blood and Transplantation Center of Lisbon, Instituto Português do Sangue e da Transplantação, Alameda das Linhas de Torres, n◦ 117, 1769-001 Lisbon, Portugal; NOVA Medical School, Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, 1169-056 Lisbon, Portugal
| | - Hélder Teixeira
- ISEL - Instituto Superior de Engenharia de Lisboa, Instituto Politécnico de Lisboa, R. Conselheiro Emidio Navarro 1, 1959‑007 Lisboa, Portugal
| | - Cecília R C Calado
- ISEL - Instituto Superior de Engenharia de Lisboa, Instituto Politécnico de Lisboa, R. Conselheiro Emidio Navarro 1, 1959‑007 Lisboa, Portugal; CIMOSM - Centro de Investigação em Modelação e Otimização de Sistemas Multifuncionais, ISEL - Instituto Superior de Engenharia de Lisboa, Instituto Politécnico de Lisboa, R. Conselheiro Emidio Navarro 1, 1959‑007 Lisboa, Portugal
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Behera SK, Huwaikem M, Jena B, Shah MP, Chakrabortty S, Tripathy SK, Mishra A. Fabrication of ZnO/Gypsum/Gelatine nanocomposites films and their antibacterial mechanism against Staphylococcus aureus. Biotechnol Genet Eng Rev 2023:1-24. [PMID: 37243587 DOI: 10.1080/02648725.2023.2216419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 05/12/2023] [Indexed: 05/29/2023]
Abstract
Staphylococcus aureus (S. aureus) has long been acknowledged as being one of the most harmful bacteria for human civilization. It is the main contributor to skin and soft tissue infections. The gram positive pathogen also contributes to bloodstream infections, pneumonia, or bone and joint infections. Hence, developing an efficient and targeted treatment for these illnesses is greatly desired. Recently, studies on nanocomposites (NCs) have significantly increased due to their potent antibacterial and antibiofilm properties. These NCs provide an intriguing way to control the growth of bacteria without causing the development of resistance strains that come from improper or excessive use of the conventional antibiotics. In this context, we have demonstrated the synthesis of a NC system by precipitation of ZnO nanoparticles (NPs) on Gypsum followed by encapsulation with Gelatine, in the present study. Fourier transform infrared (FTIR) spectroscopy was used to validate the presence of ZnO NPs and Gypsum. The film was characterized by X-ray diffraction (XRD) spectroscopy and scanning electron microscopy (SEM). The system exhibited promising antibiofilm action and was effective in combating S. aureus and MRSA in concentrations between 10 and 50 ug/ml. The bactericidal mechanism by release of reactive oxygen species (ROS) was anticipated to be induced by the NC system. Studies on cell survival and in-vitro infection support the film's notable biocompatibility and its potential for treating Staphylococcus infections in the future.
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Affiliation(s)
- Susanta Kumar Behera
- School of Biotechnology, Kalinga Institute of Industrial Technology, Bhubaneswar, India
- IMGENEX India Pvt. Ltd, Bhubaneswar, India
| | - Mashael Huwaikem
- Clinical Nutrition Department, College of Applied Medical Sciences, King Faisal University, Al Ahsa, Saudi Arabia
| | - Bhumika Jena
- School of Biotechnology, Kalinga Institute of Industrial Technology, Bhubaneswar, India
| | | | - Sankha Chakrabortty
- School of Biotechnology, Kalinga Institute of Industrial Technology, Bhubaneswar, India
- School of Chemical Technology, Kalinga Institute of Industrial Technology, Bhubaneswar, India
| | - Suraj K Tripathy
- School of Biotechnology, Kalinga Institute of Industrial Technology, Bhubaneswar, India
- School of Chemical Technology, Kalinga Institute of Industrial Technology, Bhubaneswar, India
| | - Amrita Mishra
- School of Biotechnology, Kalinga Institute of Industrial Technology, Bhubaneswar, India
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Caliskan S, Oldenhof H, Temeloglu P, Sieme H, Wolkers WF. Infrared spectroscopic analysis of hydrogen-bonding interactions in cryopreservation solutions. Biochim Biophys Acta Gen Subj 2023; 1867:130254. [PMID: 36243203 DOI: 10.1016/j.bbagen.2022.130254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 09/08/2022] [Accepted: 10/10/2022] [Indexed: 11/13/2022]
Abstract
BACKGROUND In this study we investigated hydrogen bonding interactions in hydrated and frozen solutions of different cryoprotective agents (CPAs) including dimethyl sulfoxide, glycerol, ethylene glycol, propylene glycol, and trehalose. We also investigated the effect of CPAs on ice crystal growth during storage and correlated this with storage stability of liposomes. METHODS FTIR spectroscopy was used to study hydrogen bonding interactions in CPA solutions in H2O and D2O, and their thermal response was analyzed using van 't Hoff analysis. The effect of CPAs on ice crystal growth during storage was investigated by microscopy and correlated with storage stability of liposomes encapsulated with a fluorescent dye. RESULTS Principal component analyses demonstrated that different CPAs can be recognized based on the shape of the OD band region only. Chemically similar molecules such as glycerol and ethylene glycol closely group together in a principal component score plot, whereas trehalose and DMSO appear as condensed separated clusters. The OH/OD band of CPA solutions exhibits an overall shift to higher wavenumbers with increasing temperature and changed fractions of weak and strong hydrogen interactions. CPAs diminish ice crystal formation in frozen samples during storage and minimize liposome leakage during freezing but cannot prevent leakage during frozen storage. CONCLUSIONS CPAs can be distinguished from one another based on the hydrogen bonding network that is formed in solution. DMSO-water mixtures behave anomalous compared to other CPAs that have OH groups. CPAs modulate ice crystal formation during frozen storage but cannot prevent liposome leakage during frozen storage.
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Affiliation(s)
- Sükrü Caliskan
- Biostabilization Laboratory - Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Stadtfelddamm 34, 30625 Hannover, Germany; Unit for Reproductive Medicine - Clinic for Horses, University of Veterinary Medicine Hannover, Bünteweg 15, 30559 Hannover, Germany
| | - Harriëtte Oldenhof
- Biostabilization Laboratory - Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Stadtfelddamm 34, 30625 Hannover, Germany; Unit for Reproductive Medicine - Clinic for Horses, University of Veterinary Medicine Hannover, Bünteweg 15, 30559 Hannover, Germany
| | - Pelin Temeloglu
- Biostabilization Laboratory - Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Stadtfelddamm 34, 30625 Hannover, Germany
| | - Harald Sieme
- Unit for Reproductive Medicine - Clinic for Horses, University of Veterinary Medicine Hannover, Bünteweg 15, 30559 Hannover, Germany
| | - Willem F Wolkers
- Biostabilization Laboratory - Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Stadtfelddamm 34, 30625 Hannover, Germany; Unit for Reproductive Medicine - Clinic for Horses, University of Veterinary Medicine Hannover, Bünteweg 15, 30559 Hannover, Germany.
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Zhao Y, Shao L, Jia L, Zou B, Dai R, Li X, Jia F. Inactivation effects, kinetics and mechanisms of air- and nitrogen-based cold atmospheric plasma on Pseudomonas aeruginosa. INNOV FOOD SCI EMERG 2022. [DOI: 10.1016/j.ifset.2022.103051] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Brogna R, Fan J, Sieme H, Wolkers WF, Oldenhof H. Drying and temperature induced conformational changes of nucleic acids and stallion sperm chromatin in trehalose preservation formulations. Sci Rep 2021; 11:14076. [PMID: 34234244 PMCID: PMC8263733 DOI: 10.1038/s41598-021-93569-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 06/23/2021] [Indexed: 12/27/2022] Open
Abstract
Even though dried sperm is not viable, it can be used for fertilization as long as its chromatin remains intact. In this study, we investigated drying- and temperature-induced conformational changes of nucleic acids and stallion sperm chromatin. Sperm was diluted in preservation formulations with and without sugar/albumin and subjected to convective drying at elevated temperatures on glass substrates. Accumulation of reactive oxygen species was studied during storage at different temperatures, and the sperm chromatin structure assay was used to assess DNA damage. Fourier transform infrared spectroscopy was used to identify dehydration and storage induced conformational changes in isolated DNA and sperm chromatin. Furthermore, hydrogen bonding in the preservation solutions associated with storage stability were investigated. Reactive oxygen species and DNA damage in dried sperm samples were found to accumulate with increasing storage temperature and storage duration. Non-reducing disaccharides (i.e., trehalose, sucrose) and albumin counteracted oxidative stress and preserved sperm chromatin during dried storage, whereas glucose increased DNA damage during storage. When sperm was dried in the presence of trehalose and albumin, no spectral changes were detected during storage at refrigeration temperatures, whereas under accelerated aging conditions, i.e., storage at 37 °C, spectral changes were detected indicating alterations in sperm chromatin structure.
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Affiliation(s)
- Raffaele Brogna
- Biostabilization Laboratory, Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, University of Veterinary Medicine Hannover, Hannover, Germany
- Unit for Reproductive Medicine, Clinic for Horses, University of Veterinary Medicine Hannover, Bünteweg 15, 30559, Hannover, Germany
| | - Juezhu Fan
- Biostabilization Laboratory, Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Harald Sieme
- Unit for Reproductive Medicine, Clinic for Horses, University of Veterinary Medicine Hannover, Bünteweg 15, 30559, Hannover, Germany
| | - Willem F Wolkers
- Biostabilization Laboratory, Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, University of Veterinary Medicine Hannover, Hannover, Germany
- Unit for Reproductive Medicine, Clinic for Horses, University of Veterinary Medicine Hannover, Bünteweg 15, 30559, Hannover, Germany
| | - Harriëtte Oldenhof
- Unit for Reproductive Medicine, Clinic for Horses, University of Veterinary Medicine Hannover, Bünteweg 15, 30559, Hannover, Germany.
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Liu D, Caliskan S, Rashidfarokhi B, Oldenhof H, Jung K, Sieme H, Hilfiker A, Wolkers WF. Fourier transform infrared spectroscopy coupled with machine learning classification for identification of oxidative damage in freeze-dried heart valves. Sci Rep 2021; 11:12299. [PMID: 34112893 PMCID: PMC8192956 DOI: 10.1038/s41598-021-91802-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 06/01/2021] [Indexed: 11/09/2022] Open
Abstract
Freeze-drying can be used to ensure off-the-shelf availability of decellularized heart valves for cardiovascular surgery. In this study, decellularized porcine aortic heart valves were analyzed by nitroblue tetrazolium (NBT) staining and Fourier transform infrared spectroscopy (FTIR) to identify oxidative damage during freeze-drying and subsequent storage as well as after treatment with H2O2 and FeCl3. NBT staining revealed that sucrose at a concentration of at least 40% (w/v) is needed to prevent oxidative damage during freeze-drying. Dried specimens that were stored at 4 °C depict little to no oxidative damage during storage for up to 2 months. FTIR analysis shows that fresh control, freeze-dried and stored heart valve specimens cannot be distinguished from one another, whereas H2O2- and FeCl3-treated samples could be distinguished in some tissue section. A feed forward artificial neural network model could accurately classify H2O2 and FeCl3 treated samples. However, fresh control, freeze-dried and stored samples could not be distinguished from one another, which implies that these groups are very similar in terms of their biomolecular fingerprints. Taken together, we conclude that sucrose can minimize oxidative damage caused by freeze-drying, and that subsequent dried storage has little effects on the overall biochemical composition of heart valve scaffolds.
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Affiliation(s)
- Dejia Liu
- Biostabilization Laboratory, Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, University of Veterinary Medicine Hannover, Stadtfelddamm 34, 30625, Hannover, Germany
| | - Sükrü Caliskan
- Biostabilization Laboratory, Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, University of Veterinary Medicine Hannover, Stadtfelddamm 34, 30625, Hannover, Germany.,Unit for Reproductive Medicine, Clinic for Horses, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Bita Rashidfarokhi
- Biostabilization Laboratory, Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, University of Veterinary Medicine Hannover, Stadtfelddamm 34, 30625, Hannover, Germany
| | - Harriëtte Oldenhof
- Unit for Reproductive Medicine, Clinic for Horses, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Klaus Jung
- Institute for Animal Breeding and Genetics, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Harald Sieme
- Unit for Reproductive Medicine, Clinic for Horses, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Andres Hilfiker
- Leibniz Research Laboratories for Biotechnology and Artificial Organs, Hannover Medical School, Hannover, Germany
| | - Willem F Wolkers
- Biostabilization Laboratory, Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, University of Veterinary Medicine Hannover, Stadtfelddamm 34, 30625, Hannover, Germany. .,Unit for Reproductive Medicine, Clinic for Horses, University of Veterinary Medicine Hannover, Hannover, Germany.
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