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Jeitler R, Glader C, König G, Kaplan J, Tetyczka C, Remmelgas J, Mußbacher M, Fröhlich E, Roblegg E. On the Structure, Stability, and Cell Uptake of Nanostructured Lipid Carriers for Drug Delivery. Mol Pharm 2024; 21:3674-3683. [PMID: 38838194 PMCID: PMC11220792 DOI: 10.1021/acs.molpharmaceut.4c00392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 05/23/2024] [Accepted: 05/24/2024] [Indexed: 06/07/2024]
Abstract
The efficacy of nanostructured lipid carriers (NLC) for drug delivery strongly depends on their stability and cell uptake. Both properties are governed by their compositions and internal structure. To test the effect of the lipid composition of NLC on cell uptake and stability, three kinds of liquid lipids with different degrees of unsaturation are employed. After ensuring homogeneous size distributions, the thermodynamic characteristics, stability, and mixing properties of NLC are characterized. Then the rates and predominant pathways of cell uptake are determined. Although the same surfactant is used in all cases, different uptake rates are observed. This finding contradicts the view that the surface properties of NLC are dominated by the surfactant. Instead, the uptake rates are explained by the structure of the nanocarrier. Depending on the mixing properties, some liquid lipids remain inside the nanocarrier, while other liquid lipids are present on the surface. Nanocarriers with liquid lipids on the surface are taken up more readily by the cells. This shows that the engineering of efficient lipid nanocarriers requires a delicate balance of interactions between all components of the nanocarrier on the molecular level.
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Affiliation(s)
- Ramona Jeitler
- Institute
of Pharmaceutical Sciences, Pharmaceutical Technology and Biopharmacy, University of Graz, 8010 Graz, Austria
- Research
Center Pharmaceutical Engineering GmbH, 8010 Graz, Austria
| | - Christina Glader
- Institute
of Pharmaceutical Sciences, Pharmaceutical Technology and Biopharmacy, University of Graz, 8010 Graz, Austria
- Research
Center Pharmaceutical Engineering GmbH, 8010 Graz, Austria
| | - Gerhard König
- Research
Center Pharmaceutical Engineering GmbH, 8010 Graz, Austria
- Centre
for Enzyme Innovation, School of Biological Sciences, University of Portsmouth, Portsmouth PO1 2DY, United
Kingdom
| | - Jay Kaplan
- Research
Center Pharmaceutical Engineering GmbH, 8010 Graz, Austria
- Pritzker
School of Molecular Engineering, University
of Chicago, Chicago, Illinois 60637, United States
| | - Carolin Tetyczka
- Research
Center Pharmaceutical Engineering GmbH, 8010 Graz, Austria
| | - Johan Remmelgas
- Research
Center Pharmaceutical Engineering GmbH, 8010 Graz, Austria
| | - Marion Mußbacher
- Institute
of Pharmaceutical Sciences, Pharmacology and Toxicology, University of Graz, 8010 Graz, Austria
| | - Eleonore Fröhlich
- Center
for
Medical Research, Medical University of Graz, 8010 Graz, Austria
| | - Eva Roblegg
- Institute
of Pharmaceutical Sciences, Pharmaceutical Technology and Biopharmacy, University of Graz, 8010 Graz, Austria
- Research
Center Pharmaceutical Engineering GmbH, 8010 Graz, Austria
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2
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Vidakovic I, Kornmueller K, Fiedler D, Khinast J, Fröhlich E, Leitinger G, Horn C, Quehenberger J, Spadiut O, Prassl R. Archaeosomes for Oral Drug Delivery: From Continuous Microfluidics Production to Powdered Formulations. Pharmaceutics 2024; 16:694. [PMID: 38931818 PMCID: PMC11206520 DOI: 10.3390/pharmaceutics16060694] [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: 03/11/2024] [Revised: 05/08/2024] [Accepted: 05/20/2024] [Indexed: 06/28/2024] Open
Abstract
Archaeosomes were manufactured from natural archaeal lipids by a microfluidics-assisted single-step production method utilizing a mixture of di- and tetraether lipids extracted from Sulfolobus acidocaldarius. The primary aim of this study was to investigate the exceptional stability of archaeosomes as potential carriers for oral drug delivery, with a focus on powdered formulations. The archaeosomes were negatively charged with a size of approximately 100 nm and a low polydispersity index. To assess their suitability for oral delivery, the archaeosomes were loaded with two model drugs: calcein, a fluorescent compound, and insulin, a peptide hormone. The archaeosomes demonstrated high stability in simulated intestinal fluids, with only 5% of the encapsulated compounds being released after 24 h, regardless of the presence of degrading enzymes or extremely acidic pH values such as those found in the stomach. In a co-culture cell model system mimicking the intestinal barrier, the archaeosomes showed strong adhesion to the cell membranes, facilitating a slow release of contents. The archaeosomes were loaded with insulin in a single-step procedure achieving an encapsulation efficiency of approximately 35%. These particles have been exposed to extreme manufacturing temperatures during freeze-drying and spray-drying processes, demonstrating remarkable resilience under these harsh conditions. The fabrication of stable dry powder formulations of archaeosomes represents a promising advancement toward the development of solid dosage forms for oral delivery of biological drugs.
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Affiliation(s)
- Ivan Vidakovic
- Division of Medical Physics and Biophysics, Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Medical University of Graz, 8010 Graz, Austria; (I.V.); (K.K.)
| | - Karin Kornmueller
- Division of Medical Physics and Biophysics, Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Medical University of Graz, 8010 Graz, Austria; (I.V.); (K.K.)
| | - Daniela Fiedler
- Institute of Process and Particle Engineering, Graz University of Technology, 8010 Graz, Austria;
| | | | - Eleonore Fröhlich
- Center for Medical Research, Medical University of Graz, 8010 Graz, Austria;
| | - Gerd Leitinger
- Division of Cell Biology, Histology and Embryology, Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Medical University of Graz, 8010 Graz, Austria;
| | | | - Julian Quehenberger
- NovoArc GmbH, 1120 Vienna, Austria; (C.H.); (J.Q.)
- Institute of Chemical, Environmental and Bioscience Engineering, TU Wien, 1060 Vienna, Austria;
| | - Oliver Spadiut
- Institute of Chemical, Environmental and Bioscience Engineering, TU Wien, 1060 Vienna, Austria;
| | - Ruth Prassl
- Division of Medical Physics and Biophysics, Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Medical University of Graz, 8010 Graz, Austria; (I.V.); (K.K.)
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Winter C, Tetyczka C, Pham DT, Kolb D, Leitinger G, Schönfelder S, Kunert O, Gerlza T, Kungl A, Bucar F, Roblegg E. Investigation of Hydrocolloid Plant Polysaccharides as Potential Candidates to Mimic the Functions of MUC5B in Saliva. Pharmaceutics 2024; 16:682. [PMID: 38794344 PMCID: PMC11124828 DOI: 10.3390/pharmaceutics16050682] [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: 03/05/2024] [Revised: 04/26/2024] [Accepted: 05/15/2024] [Indexed: 05/26/2024] Open
Abstract
The successful substitution of complex physiological fluids, such as human saliva, remains a major challenge in drug development. Although there are a large number of saliva substitutes on the market, their efficacy is often inadequate due to short residence time in the mouth, unpleasant mouthfeel, or insufficient protection of the teeth. Therefore, systems need to be identified that mimic the functions of saliva, in particular the salivary mucin MUC5B and the unique physiological properties of saliva. To this end, plant extracts known to contain hydrocolloid polysaccharides and to have mucus-forming properties were studied to evaluate their suitability as saliva substitutes. The aqueous plant extracts of Calendula officinalis, Fucus sp. thalli, and lichenan from Lichen islandicus were examined for composition using a range of techniques, including GC-MS, NMR, SEC, assessment of pH, osmolality, buffering capacity, viscoelasticity, viscoelastic interactions with human saliva, hydrocolloid network formation, and in vitro cell adhesion. For this purpose, a physiologically adapted adhesive test was developed using human buccal epithelial cells. The results show that lichenan is the most promising candidate to mimic the properties of MUC5B. By adjusting the pH, osmolality, and buffering capacity with K2HPO4, it was shown that lichenan exhibited high cell adhesion, with a maximum detachment force that was comparable to that of unstimulated whole mouth saliva.
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Affiliation(s)
- Christina Winter
- Institute of Pharmaceutical Sciences, Department of Pharmaceutical Technology and Biopharmacy, University of Graz, Universitätsplatz 1, 8010 Graz, Austria; (C.W.); (C.T.)
- Research Center Pharmaceutical Engineering GmbH, Inffeldgasse 13, 8010 Graz, Austria
| | - Carolin Tetyczka
- Institute of Pharmaceutical Sciences, Department of Pharmaceutical Technology and Biopharmacy, University of Graz, Universitätsplatz 1, 8010 Graz, Austria; (C.W.); (C.T.)
- Research Center Pharmaceutical Engineering GmbH, Inffeldgasse 13, 8010 Graz, Austria
| | - Duy Toan Pham
- Department of Health Sciences, College of Natural Sciences, Can Tho University, Can Tho 900000, Vietnam;
| | - Dagmar Kolb
- Core Facility Ultrastructure Analysis, Center for Medical Research, Medical University of Graz, Neue Stiftingtalstrasse 6/VI, 8010 Graz, Austria;
| | - Gerd Leitinger
- Division of Cell Biology, Histology and Embryology, Gottfried Schatz Research Center, Medical University of Graz, Neue Stiftingtalstrasse 6/V, 8010 Graz, Austria;
| | - Sandra Schönfelder
- Institute of Pharmaceutical Sciences, Department of Pharmacognosy, University of Graz, Beethovenstraße 8, 8010 Graz, Austria; (S.S.); (F.B.)
| | - Olaf Kunert
- Institute of Pharmaceutical Sciences, Department of Pharmaceutical Chemistry, University of Graz, Schubertstraße 1, 8010 Graz, Austria; (O.K.); (T.G.); (A.K.)
| | - Tanja Gerlza
- Institute of Pharmaceutical Sciences, Department of Pharmaceutical Chemistry, University of Graz, Schubertstraße 1, 8010 Graz, Austria; (O.K.); (T.G.); (A.K.)
| | - Andreas Kungl
- Institute of Pharmaceutical Sciences, Department of Pharmaceutical Chemistry, University of Graz, Schubertstraße 1, 8010 Graz, Austria; (O.K.); (T.G.); (A.K.)
| | - Franz Bucar
- Institute of Pharmaceutical Sciences, Department of Pharmacognosy, University of Graz, Beethovenstraße 8, 8010 Graz, Austria; (S.S.); (F.B.)
| | - Eva Roblegg
- Institute of Pharmaceutical Sciences, Department of Pharmaceutical Technology and Biopharmacy, University of Graz, Universitätsplatz 1, 8010 Graz, Austria; (C.W.); (C.T.)
- Research Center Pharmaceutical Engineering GmbH, Inffeldgasse 13, 8010 Graz, Austria
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4
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Lin GC, Friedl HP, Grabner S, Gerhartl A, Neuhaus W. Transport of Non-Steroidal Anti-Inflammatory Drugs across an Oral Mucosa Epithelium In Vitro Model. Pharmaceutics 2024; 16:543. [PMID: 38675204 PMCID: PMC11054638 DOI: 10.3390/pharmaceutics16040543] [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: 03/12/2024] [Revised: 04/08/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024] Open
Abstract
Non-steroidal anti-inflammatory drugs (NSAIDs) are one of the most prescribed drugs to treat pain or fever. However, oral administration of NSAIDs is frequently associated with adverse effects due to their inhibitory effect on the constitutively expressed cyclooxygenase enzyme 1 (COX-1) in, for instance, the gastrointestinal tract. A systemic delivery, such as a buccal delivery, of NSAIDs would be beneficial and additionally has the advantage of a non-invasive administration route, especially favourable for children or the elderly. To investigate the transport of NSAIDs across the buccal mucosa and determine their potential for buccal therapeutic usage, celecoxib, diclofenac, ibuprofen and piroxicam were tested using an established oral mucosa Transwell® model based on human cell line TR146. Carboxyfluorescein and diazepam were applied as internal paracellular and transcellular marker molecule, respectively. Calculated permeability coefficients revealed a transport ranking of ibuprofen > piroxicam > diclofenac > celecoxib. Transporter protein inhibitor verapamil increased the permeability for ibuprofen, piroxicam and celecoxib, whereas probenecid increased the permeability for all tested NSAIDs. Furthermore, influence of local inflammation of the buccal mucosa on the transport of NSAIDs was mimicked by treating cells with a cytokine mixture of TNF-α, IL-1ß and IFN-γ followed by transport studies with ibuprofen (+ probenecid). Cellular response to pro-inflammatory stimuli was confirmed by upregulation of cytokine targets at the mRNA level, increased secreted cytokine levels and a significant decrease in the paracellular barrier. Permeability of ibuprofen was increased across cell layers treated with cytokines, while addition of probenecid increased permeability of ibuprofen in controls, but not across cell layers treated with cytokines. In summary, the suitability of the in vitro oral mucosa model to measure NSAID transport rankings was demonstrated, and the involvement of transporter proteins was confirmed; an inflammation model was established, and increased NSAID transport upon inflammation was measured.
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Affiliation(s)
- Grace C. Lin
- Competence Unit Molecular Diagnostics, AIT Austrian Institute of Technology GmbH, 1210 Vienna, Austria (A.G.)
| | - Heinz-Peter Friedl
- Competence Unit Molecular Diagnostics, AIT Austrian Institute of Technology GmbH, 1210 Vienna, Austria (A.G.)
| | - Sarah Grabner
- Competence Unit Molecular Diagnostics, AIT Austrian Institute of Technology GmbH, 1210 Vienna, Austria (A.G.)
| | - Anna Gerhartl
- Competence Unit Molecular Diagnostics, AIT Austrian Institute of Technology GmbH, 1210 Vienna, Austria (A.G.)
| | - Winfried Neuhaus
- Competence Unit Molecular Diagnostics, AIT Austrian Institute of Technology GmbH, 1210 Vienna, Austria (A.G.)
- Department of Medicine, Faculty of Medicine and Dentistry, Danube Private University, 3500 Krems, Austria
- Division of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, 1090 Vienna, Austria
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5
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Thirupathi A, Guzzatti MFM, Corrêa MEAB, Venturini LM, Casagrande LDR, Lima IR, Da Costa C, De Pieri E, Tietbohl LTW, Feuser PE, Machado-de-Ávila RA, Gu Y, Silveira PCL. Green Synthesis of Gold Nanoparticles with Curcumin or Açai in the Tissue Repair of Palatal Wounds. Antioxidants (Basel) 2023; 12:1574. [PMID: 37627569 PMCID: PMC10451912 DOI: 10.3390/antiox12081574] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/27/2023] [Accepted: 08/02/2023] [Indexed: 08/27/2023] Open
Abstract
This study aimed to evaluate and compare the effects of treatment with gold nanoparticles (GNPs) reduced with Curcumin (Curcuma longa L.) or Açai (Euterpe oleracea) to a standard commercial treatment of the pharmacological type (Omcilon®) and an electrophysical agent (photobiomodulation) in the palatal wounds of rats. As for the in vitro assay, a cell viability test was performed to assess the toxicity of the synthesized nanoparticles. In vivo assay: 60 Wistar rats were divided into five groups (n = 12): I. Palatal Wound (PW); II. PW + Photobiomodulation (PBM); III. PW + Omcilon®; IV. PW + GNPs-Cur (0.025 mg/mL); V. PW + GNPs-Açai (0.025 mg/mL). Animals were first anesthetized, and circular lesions in the palatine mucosa were induced using a 4 mm-diameter punch. The first treatment session started 24 h after the injury and occurred daily for 5 days. The animals were euthanized, and the palatal mucosa tissue was removed for histological, biochemical, and molecular analysis. GNPs-Açai were able to significantly reduce pro-inflammatory cytokines and increase anti-inflammatory ones, reduce oxidant markers, and reduce inflammatory infiltrate while increasing the collagen area and contraction rate of the wound, along with an improved visual qualification. The present study demonstrated that the proposed therapies of GNPs synthesized greenly, thus associating their effects with those of plants, favor the tissue repair process in palatal wounds.
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Affiliation(s)
- Anand Thirupathi
- Research Academy of Medicine Combining Sports, Ningbo No. 2 Hospital, Ningbo 315099, China; (A.T.); (Y.G.)
| | - Morgana Francisco Machado Guzzatti
- Laboratory of Experimental Physiopathology, Program of Postgraduate in Science of Health, Universidade do Extremo-Sul Catarinense, Criciúma 88806-000, SC, Brazil; (M.F.M.G.); (M.E.A.B.C.); (L.M.V.); (L.d.R.C.); (I.R.L.); (C.D.C.); (E.D.P.); (L.T.W.T.); (P.E.F.); (R.A.M.-d.-Á.)
| | - Maria Eduarda Anastácio Borges Corrêa
- Laboratory of Experimental Physiopathology, Program of Postgraduate in Science of Health, Universidade do Extremo-Sul Catarinense, Criciúma 88806-000, SC, Brazil; (M.F.M.G.); (M.E.A.B.C.); (L.M.V.); (L.d.R.C.); (I.R.L.); (C.D.C.); (E.D.P.); (L.T.W.T.); (P.E.F.); (R.A.M.-d.-Á.)
| | - Ligia Milanez Venturini
- Laboratory of Experimental Physiopathology, Program of Postgraduate in Science of Health, Universidade do Extremo-Sul Catarinense, Criciúma 88806-000, SC, Brazil; (M.F.M.G.); (M.E.A.B.C.); (L.M.V.); (L.d.R.C.); (I.R.L.); (C.D.C.); (E.D.P.); (L.T.W.T.); (P.E.F.); (R.A.M.-d.-Á.)
| | - Laura de Roch Casagrande
- Laboratory of Experimental Physiopathology, Program of Postgraduate in Science of Health, Universidade do Extremo-Sul Catarinense, Criciúma 88806-000, SC, Brazil; (M.F.M.G.); (M.E.A.B.C.); (L.M.V.); (L.d.R.C.); (I.R.L.); (C.D.C.); (E.D.P.); (L.T.W.T.); (P.E.F.); (R.A.M.-d.-Á.)
| | - Igor Ramos Lima
- Laboratory of Experimental Physiopathology, Program of Postgraduate in Science of Health, Universidade do Extremo-Sul Catarinense, Criciúma 88806-000, SC, Brazil; (M.F.M.G.); (M.E.A.B.C.); (L.M.V.); (L.d.R.C.); (I.R.L.); (C.D.C.); (E.D.P.); (L.T.W.T.); (P.E.F.); (R.A.M.-d.-Á.)
| | - Camila Da Costa
- Laboratory of Experimental Physiopathology, Program of Postgraduate in Science of Health, Universidade do Extremo-Sul Catarinense, Criciúma 88806-000, SC, Brazil; (M.F.M.G.); (M.E.A.B.C.); (L.M.V.); (L.d.R.C.); (I.R.L.); (C.D.C.); (E.D.P.); (L.T.W.T.); (P.E.F.); (R.A.M.-d.-Á.)
| | - Ellen De Pieri
- Laboratory of Experimental Physiopathology, Program of Postgraduate in Science of Health, Universidade do Extremo-Sul Catarinense, Criciúma 88806-000, SC, Brazil; (M.F.M.G.); (M.E.A.B.C.); (L.M.V.); (L.d.R.C.); (I.R.L.); (C.D.C.); (E.D.P.); (L.T.W.T.); (P.E.F.); (R.A.M.-d.-Á.)
| | - Lariani Tamires Witt Tietbohl
- Laboratory of Experimental Physiopathology, Program of Postgraduate in Science of Health, Universidade do Extremo-Sul Catarinense, Criciúma 88806-000, SC, Brazil; (M.F.M.G.); (M.E.A.B.C.); (L.M.V.); (L.d.R.C.); (I.R.L.); (C.D.C.); (E.D.P.); (L.T.W.T.); (P.E.F.); (R.A.M.-d.-Á.)
| | - Paulo Emilio Feuser
- Laboratory of Experimental Physiopathology, Program of Postgraduate in Science of Health, Universidade do Extremo-Sul Catarinense, Criciúma 88806-000, SC, Brazil; (M.F.M.G.); (M.E.A.B.C.); (L.M.V.); (L.d.R.C.); (I.R.L.); (C.D.C.); (E.D.P.); (L.T.W.T.); (P.E.F.); (R.A.M.-d.-Á.)
| | - Ricardo Andrez Machado-de-Ávila
- Laboratory of Experimental Physiopathology, Program of Postgraduate in Science of Health, Universidade do Extremo-Sul Catarinense, Criciúma 88806-000, SC, Brazil; (M.F.M.G.); (M.E.A.B.C.); (L.M.V.); (L.d.R.C.); (I.R.L.); (C.D.C.); (E.D.P.); (L.T.W.T.); (P.E.F.); (R.A.M.-d.-Á.)
| | - Yaodong Gu
- Research Academy of Medicine Combining Sports, Ningbo No. 2 Hospital, Ningbo 315099, China; (A.T.); (Y.G.)
| | - Paulo Cesar Lock Silveira
- Laboratory of Experimental Physiopathology, Program of Postgraduate in Science of Health, Universidade do Extremo-Sul Catarinense, Criciúma 88806-000, SC, Brazil; (M.F.M.G.); (M.E.A.B.C.); (L.M.V.); (L.d.R.C.); (I.R.L.); (C.D.C.); (E.D.P.); (L.T.W.T.); (P.E.F.); (R.A.M.-d.-Á.)
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Seidel CL, Percivalle E, Tschaftari M, Weider M, Strobel K, Willershausen I, Unertl C, Schmetzer HM, Weber M, Schneider M, Frey B, Gaipl US, Beckmann MW, Gölz L. Orofacial clefts lead to increased pro-inflammatory cytokine levels on neonatal oral mucosa. Front Immunol 2022; 13:1044249. [PMID: 36466891 PMCID: PMC9714580 DOI: 10.3389/fimmu.2022.1044249] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 10/20/2022] [Indexed: 07/30/2023] Open
Abstract
Orofacial clefts (OFC) are frequent congenital malformations characterized by insufficient separation of oral and nasal cavities and require presurgical infant orthopedics and surgical interventions within the first year of life. Wound healing disorders and higher prevalence of gingivitis and plaque levels are well-known challenges in treatment of children with OFC. However, oral inflammatory mediators were not investigated after birth using non-invasive sampling methods so far. In order to investigate the impact of OFC on oral cytokine levels, we collected tongue smear samples from 15 neonates with OFC and 17 control neonates at two time points (T), T0 at first consultation after birth, and T1, 4 to 5 weeks later. The samples were analyzed using multiplex immunoassay. Overall, we found significantly increased cytokine levels (TNF, IL-1β/-2/-6/-8/-10) in tongue smear samples from neonates with OFC compared to controls, especially at T0. The increase was even more pronounced in neonates with a higher cleft severity. Further, we detected a significant positive correlation between cleft severity score and distinct pro-inflammatory mediators (GM-CSF, IL-1β, IL-6, IL-8) at T0. Further, we found that breast-milk (bottle) feeding was associated with lower levels of pro-inflammatory cytokines (IL-6/-8) in neonates with OFC compared to formula-fed neonates. Our study demonstrated that neonates with OFC, especially with high cleft severity, are characterized by markedly increased inflammatory mediators in tongue smear samples within the first weeks of life potentially presenting a risk for oral inflammatory diseases. Therefore, an inflammatory monitoring of neonates with (severe) OFC and the encouragement of mother to breast-milk (bottle) feed might be advisable after birth and/or prior to cleft surgery.
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Affiliation(s)
- Corinna L. Seidel
- Department of Orthodontics and Orofacial Orthopedics, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Elena Percivalle
- Department of Orthodontics and Orofacial Orthopedics, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Marco Tschaftari
- Department of Orthodontics and Orofacial Orthopedics, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Matthias Weider
- Department of Orthodontics and Orofacial Orthopedics, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Karin Strobel
- Department of Orthodontics and Orofacial Orthopedics, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Ines Willershausen
- Department of Orthodontics and Orofacial Orthopedics, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Christoph Unertl
- Department of Orthodontics and Orofacial Orthopedics, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Helga M. Schmetzer
- Med III, University Hospital of Munich, Workgroup: Immune modulation, Munich, Germany
| | - Manuel Weber
- Department of Oral and Cranio-Maxillofacial Surgery, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Michael Schneider
- Department of Gynecology and Obstetrics, Comprehensive Cancer Center (CCC) Erlangen-EMN, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Benjamin Frey
- Translational Radiobiology, Department of Radiation Oncology, Universitätsklinikum Erlangen and Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
- Medical Immunology Campus Erlangen, FAU Erlangen-Nürnberg, Erlangen, Germany
| | - Udo S. Gaipl
- Translational Radiobiology, Department of Radiation Oncology, Universitätsklinikum Erlangen and Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
- Medical Immunology Campus Erlangen, FAU Erlangen-Nürnberg, Erlangen, Germany
| | - Matthias W. Beckmann
- Department of Gynecology and Obstetrics, Comprehensive Cancer Center (CCC) Erlangen-EMN, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Lina Gölz
- Department of Orthodontics and Orofacial Orthopedics, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
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7
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Jeitler R, Glader C, Tetyczka C, Zeiringer S, Absenger-Novak M, Selmani A, Fröhlich E, Roblegg E. Investigation of Cellular Interactions of Lipid-Structured Nanoparticles With Oral Mucosal Epithelial Cells. Front Mol Biosci 2022; 9:917921. [PMID: 35677878 PMCID: PMC9170126 DOI: 10.3389/fmolb.2022.917921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 05/04/2022] [Indexed: 11/13/2022] Open
Abstract
Lipid-based nanosystems enable intracellular delivery of drugs in the oral cavity for the treatment of local diseases. To rationally design such systems, suitable matrix compositions and particle properties need to be identified, and manufacturing technologies that allow reproducible production have to be applied. This is a prerequisite for the reliable and predictable performance of in-vitro biological studies. Here, we showed that solid lipid nanoparticles (SLN, palmitic acid) and nanostructured lipid carriers (NLC, palmitic acid and oleic acid in different ratios) with a size of 250 nm, a negative zeta potential, and a polydispersity index (PdI) of less than 0.3 can be reproducibly prepared by high-pressure homogenization using quality by design and a predictive model. SLN and NLC were colloidally stable after contact with physiological fluid and did not form agglomerates. The in-vitro studies clearly showed that besides particle size, surface charge and hydrophobicity, matrix composition had a significant effect. More specifically, the addition of the liquid lipid oleic acid increased the cellular uptake capacity without changing the underlying uptake mechanism. Regardless of the matrix composition, caveolin-mediated endocytosis was the major route of uptake, which was confirmed by particle localization in the endoplasmic reticulum. Thus, this work provides useful insights into the optimal composition of lipid carrier systems to enhance the intracellular uptake capacity of drugs into the oral mucosa.
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Affiliation(s)
- R. Jeitler
- Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, Universitätsplatz 1, Graz, Austria
| | - C. Glader
- Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, Universitätsplatz 1, Graz, Austria
- Research Center Pharmaceutical Engineering GmbH, Graz, Austria
| | - C. Tetyczka
- Research Center Pharmaceutical Engineering GmbH, Graz, Austria
| | - S. Zeiringer
- Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, Universitätsplatz 1, Graz, Austria
| | - M. Absenger-Novak
- Center for Medical Research, Medical University of Graz, Graz, Austria
| | - A. Selmani
- Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, Universitätsplatz 1, Graz, Austria
| | - E. Fröhlich
- Center for Medical Research, Medical University of Graz, Graz, Austria
| | - E. Roblegg
- Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, Universitätsplatz 1, Graz, Austria
- Research Center Pharmaceutical Engineering GmbH, Graz, Austria
- *Correspondence: E. Roblegg,
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Uppin R, Varghese S. Estimation of serum, salivary, and gingival crevicular uric acid of individuals with and without periodontal disease: A systematic review and meta-analysis. J Int Soc Prev Community Dent 2022; 12:393-403. [PMID: 36312583 PMCID: PMC9615931 DOI: 10.4103/jispcd.jispcd_84_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 05/25/2022] [Accepted: 06/14/2022] [Indexed: 11/13/2022] Open
Abstract
Introduction: Uric acid (UA) levels in serum, salivary, and gingival crevicular fluid (GCF) may be associated with periodontal diseases. Hence, this study aimed to estimate the UA concentration in serum, saliva, and GCF of periodontal disease and non-periodontal disease subjects by conducting a systematic review and a meta-analysis of the reported studies. Materials and Methods: A review of the available literature was searched in the electronic databases of PubMed, Cochrane, Science Direct, and EBSCO for the relevant publications. All the related case–control, cross-sectional, and cohort studies reporting the UA levels in the blood, salivary, and GCF between periodontal disease patients and healthy controls were analyzed. Significant heterogeneity was observed in the studies. Hence, a continuous random-effects model was used. The findings are described in forest plots with the point estimations and 95% confidence interval (CI). A value of P less than 5% was considered as a significant heterogeneity test. Results: Of the initial 166 study titles screened, 14 reported papers were eligible for quantitative review. The subgroup analysis of serum UA revealed a mean difference of 0.299 (95% CI: 0.029–0.569, I2=85.64%, P<0.001), indicating an increase in the UA levels in periodontal disease. However, the subgroup analysis by salivary UA demonstrated a mean difference of −0.783 (95% CI: −1.577–0.011, I2= 94.62%, P<0.001), suggesting a lower side of the UA level in periodontal diseases. The subgroup analysis based on case–control studies showed a mean difference of 0.004 (95% CI: −0.286–0.294, I2=84.99%, P<0.001), indicating no changes in UA levels in periodontal disease. On the contrary, cohort studies and cross-sectional studies showed a mean difference : 95% CI: −1.016, −3.272–1.241, I2=97.84%, P<0.001 and 95%: −1.230, −4.410–1.949, I2=97.7%, P<0.001, indicating reduction in UA levels in periodontal disease cases. Conclusion: The current review suggests an increase in the serum UA levels in periodontal disease than in healthy controls. Contrarily, the salivary UA levels decreased in periodontal disease patients. It is unknown why UA levels are opposite in the blood and saliva of periodontal disease patients requiring further explanation.
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