1
|
Bae M, Oh JK, Liu S, Nagabandi N, Yegin Y, DeFlorio W, Cisneros-Zevallos L, Scholar EMA. Nanotoxicity of 2D Molybdenum Disulfide, MoS 2, Nanosheets on Beneficial Soil Bacteria, Bacillus cereus and Pseudomonas aeruginosa. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1453. [PMID: 34072663 PMCID: PMC8229097 DOI: 10.3390/nano11061453] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 05/26/2021] [Accepted: 05/26/2021] [Indexed: 12/21/2022]
Abstract
Concerns arising from accidental and occasional releases of novel industrial nanomaterials to the environment and waterbodies are rapidly increasing as the production and utilization levels of nanomaterials increase every day. In particular, two-dimensional nanosheets are one of the most significant emerging classes of nanomaterials used or considered for use in numerous applications and devices. This study deals with the interactions between 2D molybdenum disulfide (MoS2) nanosheets and beneficial soil bacteria. It was found that the log-reduction in the survival of Gram-positive Bacillus cereus was 2.8 (99.83%) and 4.9 (99.9988%) upon exposure to 16.0 mg/mL bulk MoS2 (macroscale) and 2D MoS2 nanosheets (nanoscale), respectively. For the case of Gram-negative Pseudomonas aeruginosa, the log-reduction values in bacterial survival were 1.9 (98.60%) and 5.4 (99.9996%) for the same concentration of bulk MoS2 and MoS2 nanosheets, respectively. Based on these findings, it is important to consider the potential toxicity of MoS2 nanosheets on beneficial soil bacteria responsible for nitrate reduction and nitrogen fixation, soil formation, decomposition of dead and decayed natural materials, and transformation of toxic compounds into nontoxic compounds to adequately assess the environmental impact of 2D nanosheets and nanomaterials.
Collapse
Affiliation(s)
- Michael Bae
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA; (M.B.); (S.L.); (N.N.); (Y.Y.); (W.D.)
| | - Jun Kyun Oh
- Department of Polymer Science and Engineering, Dankook University, 152 Jukjeon-ro, Suji-gu, Yongin-si 16890, Gyeonggi-do, Korea;
| | - Shuhao Liu
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA; (M.B.); (S.L.); (N.N.); (Y.Y.); (W.D.)
| | - Nirup Nagabandi
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA; (M.B.); (S.L.); (N.N.); (Y.Y.); (W.D.)
| | - Yagmur Yegin
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA; (M.B.); (S.L.); (N.N.); (Y.Y.); (W.D.)
| | - William DeFlorio
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA; (M.B.); (S.L.); (N.N.); (Y.Y.); (W.D.)
| | - Luis Cisneros-Zevallos
- Department of Nutrition and Food Science, Texas A&M University, College Station, TX 77843, USA;
- Department of Horticultural Science, Texas A&M University, College Station, TX 77843, USA
| | - Ethan M. A. Scholar
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA; (M.B.); (S.L.); (N.N.); (Y.Y.); (W.D.)
- Department of Materials Science and Engineering, Texas A&M University, College Station, TX 77843, USA
| |
Collapse
|
2
|
Suchý T, Šupová M, Sauerová P, Hubálek Kalbáčová M, Klapková E, Pokorný M, Horný L, Závora J, Ballay R, Denk F, Sojka M, Vištejnová L. Evaluation of collagen/hydroxyapatite electrospun layers loaded with vancomycin, gentamicin and their combination: Comparison of release kinetics, antimicrobial activity and cytocompatibility. Eur J Pharm Biopharm 2019; 140:50-59. [PMID: 31055065 DOI: 10.1016/j.ejpb.2019.04.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 04/23/2019] [Accepted: 04/30/2019] [Indexed: 12/20/2022]
Abstract
The aim of this study was to develop a biodegradable nanostructured electrospun layer based on collagen (COL), hydroxyapatite nanoparticles (HA), vancomycin hydrochloride (V), gentamicin sulphate (G) and their combination (VG) for the treatment of prosthetic joint infections and the prevention of infection during the joint replacement procedure. COL/HA layers containing different amounts of HA (0, 5 and 15 wt%) were tested for the in vitro release kinetics of antibiotics, antimicrobial activity against MRSA, gentamicin-resistant Staphylococcus epidermidis and Enterococcus faecalis isolates and cytocompatibility using SAOS-2 bone-like cells. The results revealed that the COL/HA layers released high concentrations of vancomycin and gentamicin for 21 days and performed effectively against the tested clinically-relevant bacterial isolates. The presence of HA in the collagen layers was found not to affect the release kinetics of the vancomycin from the layers loaded only with vancomycin or its combination with gentamicin. Conversely, the presence of HA slowed down the release of gentamicin from the COL/HA layers loaded with gentamicin and its combination with vancomycin. The combination of both antibiotics exerted a positive effect on the prolongation of the conversion of vancomycin into its degradation products. All the layers tested with different antibiotics exhibited potential antibacterial activity with respect to both the tested staphylococci isolates and enterococci. The complemental effect of vancomycin was determined against both gentamicin-resistant Staphylococcus epidermidis and Enterococcus faecalis in contrast to the application of gentamicin as a single agent. This combination was also found to be more effective against MRSA than is vancomycin as a single agent. Importantly, this combination of vancomycin and gentamicin in the COL/HA layers exhibited sufficient cytocompatibility to SAOS-2, which was independent of the HA content. Conversely, only gentamicin caused the death of SAOS-2 independently of HA content and only vancomycin stimulated SAOS-2 behaviour with an increased concentration of HA in the COL/HA layers. In conclusion, COL/HA layers with 15 wt% of HA impregnated with vancomycin or with a combination of vancomycin and gentamicin offer a promising treatment approach and the potential to prevent infection during the joint replacement procedures.
Collapse
Affiliation(s)
- Tomáš Suchý
- Department of Composites and Carbon Materials, Institute of Rock Structure and Mechanics, Academy of Sciences of the Czech Republic, Prague 8, Czech Republic; Faculty of Mechanical Engineering, Czech Technical University in Prague, Prague 6, Czech Republic; Biomedical Centre, Faculty of Medicine in Pilsen, Charles University in Prague, Pilsen, Czech Republic.
| | - Monika Šupová
- Department of Composites and Carbon Materials, Institute of Rock Structure and Mechanics, Academy of Sciences of the Czech Republic, Prague 8, Czech Republic; Biomedical Centre, Faculty of Medicine in Pilsen, Charles University in Prague, Pilsen, Czech Republic
| | - Pavla Sauerová
- Institute of Pathological Physiology, 1(st) Faculty of Medicine, Charles University in Prague, Prague, Czech Republic; Biomedical Centre, Faculty of Medicine in Pilsen, Charles University in Prague, Pilsen, Czech Republic
| | - Marie Hubálek Kalbáčová
- Institute of Pathological Physiology, 1(st) Faculty of Medicine, Charles University in Prague, Prague, Czech Republic; Biomedical Centre, Faculty of Medicine in Pilsen, Charles University in Prague, Pilsen, Czech Republic
| | - Eva Klapková
- Department of Medical Chemistry and Clinical Biochemistry, Charles University, 2(nd) Medical School and University Hospital Motol, Prague 5, Czech Republic
| | - Marek Pokorný
- Contipro a.s., R&D Department, Dolni Dobrouc, Czech Republic
| | - Lukáš Horný
- Faculty of Mechanical Engineering, Czech Technical University in Prague, Prague 6, Czech Republic; Biomedical Centre, Faculty of Medicine in Pilsen, Charles University in Prague, Pilsen, Czech Republic
| | - Jan Závora
- Clinical Microbiology and ATB Centre, Institute of Medical Biochemistry and Laboratory Diagnostics, 1(st) Faculty of Medicine, Charles University in Prague and Motol University Hospital, Prague 2, Czech Republic
| | - Rastislav Ballay
- 1(st) Department of Orthopaedics, 1(st) Faculty of Medicine, Charles University in Prague and Motol University Hospital, Prague 5, Czech Republic
| | - František Denk
- Department of Composites and Carbon Materials, Institute of Rock Structure and Mechanics, Academy of Sciences of the Czech Republic, Prague 8, Czech Republic
| | - Martin Sojka
- Biomedical Centre, Faculty of Medicine in Pilsen, Charles University in Prague, Pilsen, Czech Republic; Institute ofMicrobiology, Faculty of Medicine, Slovak Medical University, Bratislava, Slovakia
| | - Lucie Vištejnová
- Biomedical Centre, Faculty of Medicine in Pilsen, Charles University in Prague, Pilsen, Czech Republic
| |
Collapse
|
7
|
Abstract
Bacillus cereus is a gram-positive aerobic or facultatively anaerobic spore-forming rod. It is a cause of food poisoning, which is frequently associated with the consumption of rice-based dishes. The organism produces an emetic or diarrheal syndrome induced by an emetic toxin and enterotoxin, respectively. Other toxins are produced during growth, including phospholipases, proteases, and hemolysins, one of which, cereolysin, is a thiol-activated hemolysin. These toxins may contribute to the pathogenicity of B. cereus in nongastrointestinal disease. B. cereus isolated from clinical material other than feces or vomitus was commonly dismissed as a contaminant, but increasingly it is being recognized as a species with pathogenic potential. It is now recognized as an infrequent cause of serious nongastrointestinal infection, particularly in drug addicts, the immunosuppressed, neonates, and postsurgical patients, especially when prosthetic implants such as ventricular shunts are inserted. Ocular infections are the commonest types of severe infection, including endophthalmitis, panophthalmitis, and keratitis, usually with the characteristic formation of corneal ring abscesses. Even with prompt surgical and antimicrobial agent treatment, enucleation of the eye and blindness are common sequelae. Septicemia, meningitis, endocarditis, osteomyelitis, and surgical and traumatic wound infections are other manifestations of severe disease. B. cereus produces beta-lactamases, unlike Bacillus anthracis, and so is resistant to beta-lactam antibiotics; it is usually susceptible to treatment with clindamycin, vancomycin, gentamicin, chloramphenicol, and erythromycin. Simultaneous therapy via multiple routes may be required.
Collapse
Affiliation(s)
- F A Drobniewski
- Public Health Laboratory Service, Dulwich Hospital, London, United Kingdom
| |
Collapse
|