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Jiang G, Wu R, Liu S, Yu T, Ren Y, Busscher HJ, van der Mei HC, Liu J. Ciprofloxacin-Loaded, pH-Responsive PAMAM-Megamers Functionalized with S-Nitrosylated Hyaluronic Acid Support Infected Wound Healing in Mice without Inducing Antibiotic Resistance. Adv Healthc Mater 2024; 13:e2301747. [PMID: 37908125 DOI: 10.1002/adhm.202301747] [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: 06/01/2023] [Revised: 10/06/2023] [Indexed: 11/02/2023]
Abstract
Antimicrobial-resistant bacterial infections threaten to become the number one cause of death by the year 2050. Since the speed at which antimicrobial-resistance develops is exceeding the pace at which new antimicrobials come to the market, this threat cannot be countered by making more, new and stronger antimicrobials. Promising new antimicrobials should not only kill antimicrobial-resistant bacteria, but also prevent development of new bacterial resistance mechanisms in strains still susceptible. Here, PAMAM-dendrimers are clustered using glutaraldehyde to form megamers that are core-loaded with ciprofloxacin and functionalized with HA-SNO. Megamers are enzymatically disintegrated in an acidic pH, as in infectious biofilms, yielding release of ciprofloxacin and NO-generation by HA-SNO. NO-generation does not contribute to the killing of planktonic Gram-positive Staphylococcus aureus and Gram-negative Pseudomonas aeruginosa, but in a biofilm-mode of growth short-lived NO-assisted killing of both ciprofloxacin-susceptible and ciprofloxacin-resistant bacterial strains by the ciprofloxacin released. Repeated sub-culturing of ciprofloxacin-susceptible bacteria in presence of ciprofloxacin-loaded and HA-SNO functionalized PAMAM-megamers does not result in ciprofloxacin-resistant variants as does repeated culturing in presence of ciprofloxacin. Healing of wounds infected by a ciprofloxacin-resistant S. aureus variant treated with ciprofloxacin-loaded, HA-SNO functionalized megamers proceed faster through NO-assisted ciprofloxacin killing of infecting bacteria and stimulation of angiogenesis.
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Affiliation(s)
- Guimei Jiang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren'ai Rd, Suzhou, Jiangsu, 215123, P. R. China
- University of Groningen and University Medical Center Groningen, Department of Biomedical Engineering, Antonius Deusinglaan 1, Groningen, 9713 AV, The Netherlands
| | - Renfei Wu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren'ai Rd, Suzhou, Jiangsu, 215123, P. R. China
- University of Groningen and University Medical Center Groningen, Department of Biomedical Engineering, Antonius Deusinglaan 1, Groningen, 9713 AV, The Netherlands
| | - Sidi Liu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren'ai Rd, Suzhou, Jiangsu, 215123, P. R. China
- University of Groningen and University Medical Center Groningen, Department of Biomedical Engineering, Antonius Deusinglaan 1, Groningen, 9713 AV, The Netherlands
| | - Tianrong Yu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren'ai Rd, Suzhou, Jiangsu, 215123, P. R. China
- University of Groningen and University Medical Center Groningen, Department of Biomedical Engineering, Antonius Deusinglaan 1, Groningen, 9713 AV, The Netherlands
| | - Yijin Ren
- University of Groningen and University Medical Center of Groningen, Department of Orthodontics, Hanzeplein 1, Groningen, 9700 RB, The Netherlands
| | - Henk J Busscher
- University of Groningen and University Medical Center Groningen, Department of Biomedical Engineering, Antonius Deusinglaan 1, Groningen, 9713 AV, The Netherlands
| | - Henny C van der Mei
- University of Groningen and University Medical Center Groningen, Department of Biomedical Engineering, Antonius Deusinglaan 1, Groningen, 9713 AV, The Netherlands
| | - Jian Liu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren'ai Rd, Suzhou, Jiangsu, 215123, P. R. China
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Otten AT, Peters V, Barth I, Stevens CL, Bourgonje AR, Frijlink HW, Harmsen HJM, Rehman A, Campmans-Kuijpers MJE, Dijkstra G. Effects of ileocolonic delivered vitamin B 2, B 3 and C (ColoVit) or the Groningen anti-inflammatory diet on disease course and microbiome of patients with Crohn's disease (VITA-GrAID study): a protocol for a randomised and partially blinded trial. BMJ Open 2023; 13:e069654. [PMID: 36918234 PMCID: PMC10016306 DOI: 10.1136/bmjopen-2022-069654] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/16/2023] Open
Abstract
BACKGROUND Diet plays a pivotal role in the onset and progression of Crohn's disease (CD). Nutritional interventions revealed effects on intestinal inflammation and gut microbial composition. However, data from well-designed and controlled dietary trials are lacking. Therefore, evidence-based dietary recommendations are still unavailable to patients and physicians. Here, we aim to investigate the effects of an evidence-based anti-inflammatory diet, and an ileocolonic-targeted capsule containing vitamin B2, B3 and C (ColoVit) on patients with CD and their healthy household members. METHODS AND ANALYSIS In this multicentre, randomised, placebo-controlled, partially blinded nutritional intervention trial, we aim to recruit 255 CD patients with Harvey-Bradshaw Index <8 and a faecal calprotectin (FCal) cut-off of ≥100 µg/g at baseline. Participants will be randomised into two experimental intervention groups and one placebo group. In the experimental groups, participants will either adhere to the Groningen anti-inflammatory diet (GrAID) or ingest an ileocolonic-delivered oral vitamin B2/B3/C capsule (ColoVit). The study consists of a 12-week controlled interventional phase, which proceeds to a 9-month observational follow-up phase in which patients allocated to the GrAID group will be requested to continue the intervention on their own accord. Household members of participating patients will be asked to participate in the trial as healthy subjects and are allocated to the same group as their peer. The primary study outcome for patients is the change in FCal level from baseline. The primary outcome for household members is the change in gut microbial composition, which is set as secondary outcome for patients. ETHICS AND DISSEMINATION The protocol has been approved by the Institutional Review Board of the Stichting Beoordeling Ethiek Biomedisch Onderzoek in Assen, the Netherlands. Written informed consent will be obtained from all participants. Results will be disseminated through peer-reviewed journals and conference presentations. TRIAL REGISTRATION NUMBER NCT04913467.
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Affiliation(s)
- Antonius Timotheus Otten
- Department of Gastroenterology and Hepatology, University Medical Centre Groningen, Groningen, The Netherlands
| | - V Peters
- Department of Gastroenterology and Hepatology, University Medical Centre Groningen, Groningen, The Netherlands
| | - I Barth
- Department of Gastroenterology and Hepatology, University Medical Centre Groningen, Groningen, The Netherlands
| | - C L Stevens
- Department of Gastroenterology and Hepatology, University Medical Centre Groningen, Groningen, The Netherlands
| | - A R Bourgonje
- Department of Gastroenterology and Hepatology, University Medical Centre Groningen, Groningen, The Netherlands
| | - H W Frijlink
- Pharmaceutical Technology and Biopharmacy, University of Groningen, Groningen, The Netherlands
| | - H J M Harmsen
- Department of Medical Microbiology, University Medical Centre Groningen, Groningen, The Netherlands
| | - A Rehman
- DSM Nutritional Products AG, Kaiseraugst, Switzerland
| | - M J E Campmans-Kuijpers
- Department of Gastroenterology and Hepatology, University Medical Centre Groningen, Groningen, The Netherlands
| | - G Dijkstra
- Department of Gastroenterology and Hepatology, University Medical Centre Groningen, Groningen, The Netherlands
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