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Say S, Suzuki M, Hashimoto Y, Kimura T, Kishida A. Investigation of anti-adhesion ability of 8-arm PEGNHS-modified porcine pericardium. Biomed Mater 2024; 19:035012. [PMID: 38422523 DOI: 10.1088/1748-605x/ad2ed3] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 02/29/2024] [Indexed: 03/02/2024]
Abstract
In post-adhesion surgery, there is a clinical need for anti-adhesion membranes specifically designed for the liver, given the limited efficacy of current commercial products. To address this demand, we present a membrane suitable for liver surgery applications, fabricated through the modification of decellularized porcine pericardium with 20 KDa hexaglycerol octa (succinimidyloxyglutaryl) polyoxyethylene (8-arm PEGNHS). We also developed an optimized modification procedure to produce a high-performance anti-adhesion barrier. The modified membrane significantly inhibited fibroblast cell adherence while maintaining minimal levels of inflammation. By optimizing the modification ratio, we successfully controlled post-adhesion formation. Notably, the 8-arm PEG-modified pericardium with a molar ratio of 5 exhibited the ability to effectively prevent post-adhesion formation on the liver compared to both the control and Seprafilm®, with a low adhesion score of 0.5 out of 3.0. Histological analysis further confirmed its potential for easy separation. Furthermore, the membrane demonstrated regenerative capabilities, as evidenced by the proliferation of mesothelial cells on its surface, endowing anti-adhesion properties between the abdominal wall and liver. These findings highlight the membrane's potential as a reliable barrier for repeated liver resection procedures that require the removal of the membrane multiple times.
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Affiliation(s)
- Sreypich Say
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda-Ku, Tokyo 101-0062, Japan
| | - Mika Suzuki
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda-Ku, Tokyo 101-0062, Japan
| | - Yoshihide Hashimoto
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda-Ku, Tokyo 101-0062, Japan
| | - Tsuyoshi Kimura
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda-Ku, Tokyo 101-0062, Japan
| | - Akio Kishida
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda-Ku, Tokyo 101-0062, Japan
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2
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Matsumoto Y, Eshima S, Kurakado S, Sugita T. A Silkworm Infection Model for Evaluating In Vivo Biofilm Formation by Pathogenic Fungi. Med Mycol J 2024; 65:7-12. [PMID: 38417885 DOI: 10.3314/mmj.24.001] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2024]
Abstract
Experimental animal models are necessary for research on infectious diseases. Generally, mammalian animals, such as mice, are used for infection experiments. However, there are ethical issues associated with conducting infection experiments in mammals. This has made it difficult to perform infection experiments with a large number of individuals. The invertebrate silkworm, Bombyx mori, is gaining attention as a model animal for infection experiments, and silkworm infection models with various pathogens have been established. This review provides information on the use of silkworm infection models for fungal infection research and evaluation of in vivo biofilm formation by pathogenic fungi using a novel silkworm experimental system. Various silkworm infection models with pathogenic fungi have been used for the development of antifungal drugs and the identification of fungal virulence-related genes. Furthermore, a catheter-material-inserted silkworm infection model was established to evaluate biofilm formation in vivo. Silkworm infection models have contributed to research on fungal infections.
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Affiliation(s)
| | | | - Sanae Kurakado
- Department of Microbiology, Meiji Pharmaceutical University
| | - Takashi Sugita
- Department of Microbiology, Meiji Pharmaceutical University
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3
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de Ruijter M, Diloksumpan P, Dokter I, Brommer H, Smit IH, Levato R, van Weeren PR, Castilho M, Malda J. Orthotopic equine study confirms the pivotal importance of structural reinforcement over the pre-culture of cartilage implants. Bioeng Transl Med 2024; 9:e10614. [PMID: 38193127 PMCID: PMC10771555 DOI: 10.1002/btm2.10614] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 10/04/2023] [Accepted: 10/11/2023] [Indexed: 01/10/2024] Open
Abstract
In articular cartilage (AC), the collagen arcades provide the tissue with its extraordinary mechanical properties. As these structures cannot be restored once damaged, functional restoration of AC defects remains a major challenge. We report that the use of a converged bioprinted, osteochondral implant, based on a gelatin methacryloyl cartilage phase, reinforced with precisely patterned melt electrowritten polycaprolactone micrometer-scale fibers in a zonal fashion, inspired by native collagen architecture, can provide long-term mechanically stable neo-tissue in an orthotopic large animal model. The design of this novel implant was achieved via state-of-the-art converging of extrusion-based ceramic printing, melt electrowriting, and extrusion-based bioprinting. Interestingly, the cell-free implants, used as a control in this study, showed abundant cell ingrowth and similar favorable results as the cell-containing implants. Our findings underscore the hypothesis that mechanical stability is more determining for the successful survival of the implant than the presence of cells and pre-cultured extracellular matrix. This observation is of great translational importance and highlights the aptness of advanced 3D (bio)fabrication technologies for functional tissue restoration in the harsh articular joint mechanical environment.
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Affiliation(s)
- Mylène de Ruijter
- Department of Orthopaedics, RMCU Utrecht, UMC UtrechtUniversity of UtrechtUtrechtThe Netherlands
- Department of Clinical Sciences, Faculty of Veterinary MedicineUtrecht UniversityUtrechtThe Netherlands
| | - Paweena Diloksumpan
- Department of Clinical Sciences, Faculty of Veterinary MedicineUtrecht UniversityUtrechtThe Netherlands
| | - Inge Dokter
- Department of Orthopaedics, RMCU Utrecht, UMC UtrechtUniversity of UtrechtUtrechtThe Netherlands
| | - Harold Brommer
- Department of Clinical Sciences, Faculty of Veterinary MedicineUtrecht UniversityUtrechtThe Netherlands
| | - Ineke H. Smit
- Department of Clinical Sciences, Faculty of Veterinary MedicineUtrecht UniversityUtrechtThe Netherlands
| | - Riccardo Levato
- Department of Orthopaedics, RMCU Utrecht, UMC UtrechtUniversity of UtrechtUtrechtThe Netherlands
- Department of Clinical Sciences, Faculty of Veterinary MedicineUtrecht UniversityUtrechtThe Netherlands
| | - P. René van Weeren
- Department of Clinical Sciences, Faculty of Veterinary MedicineUtrecht UniversityUtrechtThe Netherlands
| | - Miguel Castilho
- Department of Orthopaedics, RMCU Utrecht, UMC UtrechtUniversity of UtrechtUtrechtThe Netherlands
- Department of Biomedical EngineeringEindhoven University of TechnologyEindhovenThe Netherlands
| | - Jos Malda
- Department of Orthopaedics, RMCU Utrecht, UMC UtrechtUniversity of UtrechtUtrechtThe Netherlands
- Department of Clinical Sciences, Faculty of Veterinary MedicineUtrecht UniversityUtrechtThe Netherlands
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4
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Condrò G, Sciortino R, Perugini P. Squalene Peroxidation and Biophysical Parameters in Acne-Prone Skin: A Pilot "In Vivo" Study. Pharmaceuticals (Basel) 2023; 16:1704. [PMID: 38139830 PMCID: PMC10748031 DOI: 10.3390/ph16121704] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/06/2023] [Accepted: 12/06/2023] [Indexed: 12/24/2023] Open
Abstract
Nowadays, acne vulgaris therapies are often unsuccessful. One of the responsible factors for the formation of comedones and inflammatory lesions could be the peroxidation of squalene, a hydrocarbon representing one of the major components of human sebum. This peroxidation is increased by solar irradiation. The purpose of this work was to set up an in vivo method for the extraction and quantification of squalene from acne skin and to correlate the results with biophysical skin parameters such as sebum amount, protein content and TEWL. Healthy volunteers were used as control. The results obtained demonstrated that acne-prone skin had a major quantity of squalene, and, in the stratum corneum area, its peroxide form is present. Moreover, Spearman's rank correlation showed a positive correlation between sebum content and peroxide squalene and between porphyrin intensity and peroxide squalene.
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Affiliation(s)
- Giorgia Condrò
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (G.C.); (R.S.)
| | - Roberta Sciortino
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (G.C.); (R.S.)
| | - Paola Perugini
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (G.C.); (R.S.)
- Etichub, Academic Spin-Off, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
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5
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Lien VT, Hauge E, Nuruddin S, Klaveness J, Olberg DE. Synthesis and preclinical evaluation of a selective MET kinase positron emission tomography tracer. J Labelled Comp Radiopharm 2023; 66:452-460. [PMID: 37867318 DOI: 10.1002/jlcr.4066] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 09/12/2023] [Accepted: 09/14/2023] [Indexed: 10/24/2023]
Abstract
The tyrosine kinase MET (hepatocyte growth factor receptor) is activated or mutated in a wide range of cancers and is often correlated with a poor prognosis. Precision medicine with positron emission tomography (PET) can potentially aid in the assessment of tumor biochemistry and heterogeneity, which can prompt the selection of the most effective therapeutic regimes. The selective MET inhibitor PF04217903 (1) formed the basis for a bioisosteric replacement, leading to the deoxyfluorinated analog [18 F]2. [18 F]2 could be synthesized with a "hydrous fluoroethylation" protocol in 6.3 ± 2.6% radiochemical yield and a molar activity of >50 GBq/μmol. In vitro autoradiography indicated that [18 F]2 selectively binds to MET in PC3 tumor tissue, and in vivo biodistribution in mice showed predominantly a hepatobiliary excretion along with a low retention of radiotracer in other organs.
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Affiliation(s)
- Vegard Torp Lien
- Department of Pharmacy, University of Oslo, Oslo, Norway
- Norwegian Medical Cyclotron Center, Oslo, Norway
| | - Emily Hauge
- Department of Pharmacy, University of Oslo, Oslo, Norway
- Norwegian Medical Cyclotron Center, Oslo, Norway
| | | | - Jo Klaveness
- Department of Pharmacy, University of Oslo, Oslo, Norway
| | - Dag Erlend Olberg
- Department of Pharmacy, University of Oslo, Oslo, Norway
- Norwegian Medical Cyclotron Center, Oslo, Norway
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Syed MA, Hanif S, Ain NU, Syed HK, Zahoor AF, Khan IU, Abualsunun WA, Jali AM, Qahl SH, Sultan MH, Madkhali OA, Ahmed RA, Abbas N, Hussain A, Qayyum MA, Irfan M. Assessment of Binary Agarose-Carbopol Buccal Gels for Mucoadhesive Drug Delivery: Ex Vivo and In Vivo Characterization. Molecules 2022; 27:7004. [PMID: 36296596 PMCID: PMC9608223 DOI: 10.3390/molecules27207004] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 10/11/2022] [Accepted: 10/14/2022] [Indexed: 07/30/2023] Open
Abstract
Agarose (AG) is a naturally occurring biocompatible marine seaweed extract that is converted to hydrocolloid gel in hot water with notable gel strength. Currently, its mucoadhesion properties have not been fully explored. Therefore, the main aim of this study was to evaluate the mucoadhesive potential of AG binary dispersions in combination with Carbopol 934P (CP) as mucoadhesive gel preparations. The gels fabricated via homogenization were evaluated for ex vivo mucoadhesion, swelling index (SI), dissolution and stability studies. The mucoadhesive properties of AG were concentration dependent and it was improved by the addition of CP. Maximum mucoadhesive strength (MS) (27.03 g), mucoadhesive flow time (FT) (192.2 min), mucoadhesive time in volunteers (MT) (203.2 min) and SI (23.6% at 4 h) were observed with formulation F9. The mucoadhesive time investigated in volunteers (MT) was influenced by AG concentration and was greater than corresponding FT values. Formulations containing 0.3%, w/v AG (F3 and F9) were able to sustain the release (~99%) for both drugs till 3 h. The optimized formulation (F9) did not evoke any inflammation, irritation or pain in the buccal cavity of healthy volunteers and was also stable up to 6 months. Therefore, AG could be considered a natural and potential polymer with profound mucoadhesive properties to deliver drugs through the mucosal route.
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Affiliation(s)
- Muhammad Ali Syed
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad 38000, Pakistan or
- Faculty of Pharmacy, The University of Lahore, Lahore 54590, Pakistan or
| | - Sana Hanif
- Faculty of Pharmacy, The University of Lahore, Lahore 54590, Pakistan or
| | - Noor ul Ain
- Department of Medicine, Fatima Jinnah Medical University Lahore, Lahore 54000, Pakistan
| | - Haroon Khalid Syed
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad 38000, Pakistan or
| | - Ameer Fawad Zahoor
- Department of Chemistry, Government College University Faisalabad, Faisalabad 54590, Pakistan
| | - Ikram Ullah Khan
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad 38000, Pakistan or
| | - Walaa A. Abualsunun
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Abdulmajeed M. Jali
- Department of Pharmacology and Toxicology, College of Pharmacy, Jazan University, P.O. Box 114, Jazan 45142, Saudi Arabia
| | - Safa H. Qahl
- Department of Biology, College of Science, University of Jeddah, P.O. Box 80327, Jeddah 21589, Saudi Arabia
| | - Muhammad H. Sultan
- Department of Pharmaceutics, College of Pharmacy, Jazan University, Jazan 45142, Saudi Arabia
| | - Osama A. Madkhali
- Department of Pharmaceutics, College of Pharmacy, Jazan University, Jazan 45142, Saudi Arabia
| | - Rayan A. Ahmed
- Department of Pharmacology and Toxicology, College of Pharmacy, Jazan University, P.O. Box 114, Jazan 45142, Saudi Arabia
| | - Nasir Abbas
- University College of Pharmacy, University of The Punjab, Lahore 38000, Pakistan
| | - Amjad Hussain
- University College of Pharmacy, University of The Punjab, Lahore 38000, Pakistan
| | - Muhammad Abdul Qayyum
- Department of Chemistry, Division of Science & Technology, University of Education, Lahore 5600, Pakistan
| | - Muhammad Irfan
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad 38000, Pakistan or
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7
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Pitto-Barry A, Azmanova M, Rafols L, Cooper PA, Seaton CC, Shnyder SD. Anticancer water-soluble organoruthenium complexes: synthesis and preclinical evaluation. Chembiochem 2022; 23:e202200259. [PMID: 35838006 PMCID: PMC9545474 DOI: 10.1002/cbic.202200259] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 07/13/2022] [Indexed: 11/18/2022]
Abstract
The synthesis, characterisation, and evaluation of the in vitro cytotoxicity of five maleonitriledithiolate‐based ruthenium metal complexes bearing various phosphine ligands towards two ovarian cancer cell lines (A2780 and A2780cisR), one non‐small‐cell lung cancer cell line (H460) and one normal prostate cell line (PNT2) are presented herein. These 18‐electron complexes were designed with four water‐soluble phosphine ligands to increase the water‐solubility character of the corresponding electron‐deficient ruthenium complex which showed great in vitro promises, and triphenylphosphine for comparison. The complexes with triphenylphosphine‐3,3′,3′′‐trisulfonic acid and triphenylphosphine present similar cytotoxicity compared to the 16‐electron precursor, with equal cytotoxicity to both A2780 and A2780cisR. Hints at the mechanism of action suggest an apoptotic pathway based on reactive oxygen species (ROS) production. No toxicity was observed in preliminary in vivo pilot studies for these two complexes in subcutaneous A2780 and A2780cisR xenograft models, with some evidence of tumour growth delay.
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Affiliation(s)
- Anaïs Pitto-Barry
- CNRS: Centre National de la Recherche Scientifique, Institut Galien Paris-Saclay, Faculté de Pharmacie, Université Paris-Saclay, 5 rue J.-B. Clément, 92290, Châtenay-Malabry, FRANCE
| | - Maria Azmanova
- University of Bradford, School of Chemistry and Biosciences, UNITED KINGDOM
| | - Laia Rafols
- University of Bradford, School of Chemistry and Biosciences, UNITED KINGDOM
| | | | - Colin C Seaton
- University of Bradford, School of Chemistry and Biosciences, UNITED KINGDOM
| | - Steven D Shnyder
- University of Bradford, Institute of Cancer Therapeutics, UNITED KINGDOM
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8
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Donate R, Tamaddon M, Ribeiro V, Monzón M, Oliveira JM, Liu C. Translation through collaboration: practice applied in BAMOS project in in vivo testing of innovative osteochondral scaffolds. Biomater Transl 2022; 3:102-104. [PMID: 36105564 PMCID: PMC9465993 DOI: 10.12336/biomatertransl.2022.02.003] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 05/06/2022] [Accepted: 05/25/2022] [Indexed: 02/02/2023]
Abstract
Osteoarthritis is the most common chronic degenerative joint disease, recognized by the World Health Organization as a public health problem that affects millions of people worldwide. The project Biomaterials and Additive Manufacturing: Osteochondral Scaffold (BAMOS) innovation applied to osteoarthritis, funded under the frame of the Horizon 2020 Research and Innovation Staff Exchanges (RISE) program, aims to delay or avoid the use of joint replacements by developing novel cost-effective osteochondral scaffold technology for early intervention of osteoarthritis. The multidisciplinary consortium of BAMOS, formed by international leading research centres, collaborates through research and innovation staff exchanges. The project covers all the stages of the development before the clinical trials: design of scaffolds, biomaterials development, processability under additive manufacturing, in vitro test, and in vivo test. This paper reports the translational practice adopted in the project in in vivo assessment of the osteochondral scaffolds developed.
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Affiliation(s)
- Ricardo Donate
- Departamento de Ingeniería Mecánica, Grupo de Investigación en Fabricación Integrada y Avanzada, Universidad de Las Palmas de Gran Canaria, Las Palmas, Spain,Corresponding authors: Ricardo Donate, ; Mario Monzón, ; J. Miguel Oliveira, ; Chaozong Liu,
| | - Maryam Tamaddon
- Division of Surgery & Interventional Science, University College London, Royal National Orthopaedic Hospital, Stanmore, UK
| | - Viviana Ribeiro
- 3B’s Research Group, I3B’s-Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Barco, Guimarães, Portugal,ICVS/3B’s-PT Government Associated Laboratory, Braga, Guimarães, Portugal
| | - Mario Monzón
- Departamento de Ingeniería Mecánica, Grupo de Investigación en Fabricación Integrada y Avanzada, Universidad de Las Palmas de Gran Canaria, Las Palmas, Spain,Corresponding authors: Ricardo Donate, ; Mario Monzón, ; J. Miguel Oliveira, ; Chaozong Liu,
| | - J. Miguel Oliveira
- 3B’s Research Group, I3B’s-Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Barco, Guimarães, Portugal,ICVS/3B’s-PT Government Associated Laboratory, Braga, Guimarães, Portugal,Corresponding authors: Ricardo Donate, ; Mario Monzón, ; J. Miguel Oliveira, ; Chaozong Liu,
| | - Chaozong Liu
- Division of Surgery & Interventional Science, University College London, Royal National Orthopaedic Hospital, Stanmore, UK,Corresponding authors: Ricardo Donate, ; Mario Monzón, ; J. Miguel Oliveira, ; Chaozong Liu,
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9
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Ruan X, Hu J, Lu L, Wang Y, Tang C, Liu F, Gao X, Zhang L, Wu H, Huang X, Wei Q. Poloxamer 407/188 Binary Thermosensitive Gel as a Moxidectin Delivery System: In Vitro Release and In Vivo Evaluation. Molecules 2022; 27. [PMID: 35630537 DOI: 10.3390/molecules27103063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 05/04/2022] [Accepted: 05/05/2022] [Indexed: 11/22/2022] Open
Abstract
Moxidectin (MXD) is an antiparasitic drug used extensively in veterinary clinics. In this study, to develop a new formulation of MXD, a thermosensitive gel of MXD (MXD-TG) was prepared based on poloxamer 407/188. Furthermore, the gelation temperature, the stability, in vitro release kinetics and in vivo pharmacokinetics of MXD-TG were evaluated. The results showed that the gelation temperature was approximately 27 °C. MXD-TG was physically stable and can be released continuously for more than 96 h in vitro. The Korsmeyer−Peppas model provided the best fit to the release kinetics, and the release mechanism followed a diffusive erosion style. MXD-TG was released persistently for over 70 days in sheep. Part of pharmacokinetic parameters had a difference in female and male sheep (p < 0.05). It was concluded that MXD-TG had a good stability, and its release followed the characteristics of a diffusive erosion style in vitro and a sustained release pattern in vivo.
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10
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Hu K, Li Y, Ke Z, Yang H, Lu C, Li Y, Guo Y, Wang W. History, progress and future challenges of artificial blood vessels: a narrative review. Biomater Transl 2022; 3:81-98. [PMID: 35837341 PMCID: PMC9255792 DOI: 10.12336/biomatertransl.2022.01.008] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 02/24/2022] [Accepted: 03/01/2022] [Indexed: 11/29/2022]
Abstract
Cardiovascular disease serves as the leading cause of death worldwide, with stenosis, occlusion, or severe dysfunction of blood vessels being its pathophysiological mechanism. Vascular replacement is the preferred surgical option for treating obstructed vascular structures. Due to the limited availability of healthy autologous vessels as well as the incidence of postoperative complications, there is an increasing demand for artificial blood vessels. From synthetic to natural, or a mixture of these components, numerous materials have been used to prepare artificial vascular grafts. Although synthetic grafts are more appropriate for use in medium to large-diameter vessels, they fail when replacing small-diameter vessels. Tissue-engineered vascular grafts are very likely to be an ideal alternative to autologous grafts in small-diameter vessels and are worthy of further investigation. However, a multitude of problems remain that must be resolved before they can be used in biomedical applications. Accordingly, this review attempts to describe these problems and provide a discussion of the generation of artificial blood vessels. In addition, we deliberate on current state-of-the-art technologies for creating artificial blood vessels, including advances in materials, fabrication techniques, various methods of surface modification, as well as preclinical and clinical applications. Furthermore, the evaluation of grafts both in vivo and in vitro, mechanical properties, challenges, and directions for further research are also discussed.
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Affiliation(s)
- Ke Hu
- Department of Vascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Yuxuan Li
- Department of Vascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Zunxiang Ke
- Department of Emergency Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Hongjun Yang
- Key Laboratory of Green Processing and Functional New Textile Materials of Ministry of Education, Wuhan Textile University, Wuhan, Hubei Province, China
| | - Chanjun Lu
- Department of Vascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Yiqing Li
- Department of Vascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Yi Guo
- Department of Vascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China,Clinical Centre of Human Gene Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China,Corresponding author: Yi Guo, ; Weici Wang,
| | - Weici Wang
- Department of Vascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China,Corresponding author: Yi Guo, ; Weici Wang,
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11
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Narayanan P, Anitha AK, Ajayakumar N, Kumar KS. Poly-Lysine Dendritic Nanocarrier to Target Epidermal Growth Factor Receptor Overexpressed Breast Cancer for Methotrexate Delivery. Materials (Basel) 2022; 15:800. [PMID: 35160746 DOI: 10.3390/ma15030800] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 12/31/2021] [Accepted: 01/05/2022] [Indexed: 11/29/2022]
Abstract
A fourth generation poly-lysine dendritic nanocarrier (P4LDN)-based targeted chemotherapy for breast cancer is attempted by incorporating an epidermal growth factor receptor (EGFR)-specific short peptide E2 (ARSHVGYTGAR) and the drug methotrexate (MTX) into a nanocarrier system. The drug is incorporated into the nanocarrier using a cathepsin B cleavable spacer: glycine–phenylalanine–leucine–glycine (GFLG). The in vitro analysis of the time-dependent drug release, binding and internalization ability, and the cytotoxic nature showed that this drug delivery system (DDS) is highly effective. The efficacy analysis using non-obese diabetic/severe combined immunodeficiency (NOD-SCID) mice also showed that compared to the control group, the DDS can effectively reduce tumor volume. The mice that received the DDS appeared to gain weight more rapidly than the free drug, which suggests that the dendrimer is more easily tolerated by mice than the free drug.
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12
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Du P, Li X, Sun L, Pan Y, Zhu H, Li Y, Yang Y, Wei X, Jing C, Chen H, Shi Q, Li W, Zhao L. Improved hemocompatibility by modifying acellular blood vessels with bivalirudin and its biocompatibility evaluation. J Biomed Mater Res A 2021; 110:635-651. [PMID: 34599549 DOI: 10.1002/jbm.a.37316] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 09/14/2021] [Accepted: 09/22/2021] [Indexed: 11/08/2022]
Abstract
The incidence rate of cardiovascular diseases is increasing year by year. The demand for coronary artery bypass grafting has been very large. Acellular blood vessels have potential clinical application because of their natural vascular basis, but their biocompatibility and anticoagulant energy need to be improved. We decellularized the abdominal aorta of SD rats, and then modified with bivalirudin via polydopamine. The mechanical properties, blood compatibility, cytocompatibility, immune response, and anticoagulant properties were evaluated, and then the bivalirudin-modified acellular blood vessels were implanted into rats for remodeling evaluation in vivo. The results we got show that the bivalirudin-modified acellular blood vessels showed good cytocompatibility and blood compatibility, and its anti-inflammatory trend was dominant in the immune response. After 3 months of transplantation, the bivalirudin-modified acellular blood vessels did not easily form thrombus. It was not easy to form calcification and could make the host cells grow better. Through vascular stimulation and immunofluorescence test, we found that vascular smooth muscle cells and endothelial cells proliferated well in the bivalirudin group. Bivalirudin-modified acellular blood vessels provided new idea for small diameter tissue engineering blood vessels, and may become a potential clinical substitute for small-diameter vascular grafts.
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Affiliation(s)
- Pengchong Du
- Key Laboratory of Cardiac Structure Research, Zhengzhou Seventh People's Hospital, College of Life Science and Technology, Xinxiang Medical University, Xinxiang, China.,Department of Cardiothoracic Surgery, Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
| | - Xiafei Li
- College of Medical Engineering, Xinxiang Medical University, Xinxiang, China
| | - Lulu Sun
- Key Laboratory of Cardiac Structure Research, Zhengzhou Seventh People's Hospital, College of Life Science and Technology, Xinxiang Medical University, Xinxiang, China
| | - Yuxue Pan
- Key Laboratory of Cardiac Structure Research, Zhengzhou Seventh People's Hospital, College of Life Science and Technology, Xinxiang Medical University, Xinxiang, China
| | - Hengchao Zhu
- Key Laboratory of Cardiac Structure Research, Zhengzhou Seventh People's Hospital, College of Life Science and Technology, Xinxiang Medical University, Xinxiang, China
| | - Yangyang Li
- Department of Cardiothoracic Surgery, Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
| | - Yingjie Yang
- Department of Cardiothoracic Surgery, Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
| | - Xieze Wei
- Department of Anesthesiology, Xinxiang Central Hospital of Xinxiang Medical University, Xinxiang, China
| | - Changqin Jing
- Key Laboratory of Cardiac Structure Research, Zhengzhou Seventh People's Hospital, College of Life Science and Technology, Xinxiang Medical University, Xinxiang, China
| | - Hongli Chen
- Key Laboratory of Cardiac Structure Research, Zhengzhou Seventh People's Hospital, College of Life Science and Technology, Xinxiang Medical University, Xinxiang, China
| | - Qizhong Shi
- Department of Cardiothoracic Surgery, Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
| | - Wenbin Li
- Department of Cardiothoracic Surgery, Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
| | - Liang Zhao
- Key Laboratory of Cardiac Structure Research, Zhengzhou Seventh People's Hospital, College of Life Science and Technology, Xinxiang Medical University, Xinxiang, China
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González-Álvarez H, Bravo-Jiménez A, Martínez-Arellanes M, Gamboa-Osorio GO, Chávez-Gutiérrez E, González-Hernández LA, Gallardo-Ignacio K, Quintana-Romero OJ, Ariza-Castolo A, Guerra-Araiza C, Martino-Roaro L, Meneses-Ruiz DM, Pinto-Almazán R, Loza-Mejía MA. In Silico-Based Design and In Vivo Evaluation of an Anthranilic Acid Derivative as a Multitarget Drug in a Diet-Induced Metabolic Syndrome Model. Pharmaceuticals (Basel) 2021; 14:914. [PMID: 34577613 PMCID: PMC8466046 DOI: 10.3390/ph14090914] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 08/31/2021] [Accepted: 09/03/2021] [Indexed: 12/13/2022] Open
Abstract
Metabolic syndrome (MetS) is a complex disease that affects almost a quarter of the world's adult population. In MetS, diabetes, obesity, hyperglycemia, high cholesterol, and high blood pressure are the most common disorders. Polypharmacy is the most used strategy for managing conditions related to MetS, but it has drawbacks such as low medication adherence. Multitarget ligands have been proposed as an interesting approach to developing drugs to treat complex diseases. However, suitable preclinical models that allow their evaluation in a context closer to a clinical situation of a complex disease are needed. From molecular docking studies, compound 1b, a 5-aminoanthranilic acid derivative substituted with 4'-trifluoromethylbenzylamino and 3',4'-dimethoxybenzamide moieties, was identified as a potential multitarget drug, as it showed high in silico affinity against targets related to MetS, including PPAR-α, PPAR-γ, and HMG-CoA reductase. It was evaluated in a diet-induced MetS rat model and simultaneously lowered blood pressure, glucose, total cholesterol, and triglyceride levels after a 14-day treatment. No toxicity events were observed during an acute lethal dose evaluation test at 1500 mg/kg. Hence, the diet-induced MetS model is suitable for evaluating treatments for MetS, and compound 1b is an attractive starting point for developing multitarget drugs.
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Affiliation(s)
- Héctor González-Álvarez
- Design, Isolation, and Synthesis of Bioactive Molecules Research Group, Chemical Sciences School, Universidad La Salle-México, Benjamín Franklin 45, Mexico City 06140, Mexico; (H.G.-Á.); (A.B.-J.); (M.M.-A.); (G.O.G.-O.); (L.M.-R.)
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Astrid Bravo-Jiménez
- Design, Isolation, and Synthesis of Bioactive Molecules Research Group, Chemical Sciences School, Universidad La Salle-México, Benjamín Franklin 45, Mexico City 06140, Mexico; (H.G.-Á.); (A.B.-J.); (M.M.-A.); (G.O.G.-O.); (L.M.-R.)
- Department of Physiology and Pathophysiology, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
| | - Matilda Martínez-Arellanes
- Design, Isolation, and Synthesis of Bioactive Molecules Research Group, Chemical Sciences School, Universidad La Salle-México, Benjamín Franklin 45, Mexico City 06140, Mexico; (H.G.-Á.); (A.B.-J.); (M.M.-A.); (G.O.G.-O.); (L.M.-R.)
| | - Gabriela Odette Gamboa-Osorio
- Design, Isolation, and Synthesis of Bioactive Molecules Research Group, Chemical Sciences School, Universidad La Salle-México, Benjamín Franklin 45, Mexico City 06140, Mexico; (H.G.-Á.); (A.B.-J.); (M.M.-A.); (G.O.G.-O.); (L.M.-R.)
| | - Edwin Chávez-Gutiérrez
- Molecular Biology in Metabolic and Neurodegenerative Diseases Laboratory, Research Unit, High Speciality Regional Hospital of Ixtapaluca (HRAEI), Carretera Federal México-Puebla Km 34.5, Ixtapaluca 56530, Mexico; (E.C.-G.); (L.A.G.-H.); (K.G.-I.)
| | - Lino A. González-Hernández
- Molecular Biology in Metabolic and Neurodegenerative Diseases Laboratory, Research Unit, High Speciality Regional Hospital of Ixtapaluca (HRAEI), Carretera Federal México-Puebla Km 34.5, Ixtapaluca 56530, Mexico; (E.C.-G.); (L.A.G.-H.); (K.G.-I.)
| | - Karina Gallardo-Ignacio
- Molecular Biology in Metabolic and Neurodegenerative Diseases Laboratory, Research Unit, High Speciality Regional Hospital of Ixtapaluca (HRAEI), Carretera Federal México-Puebla Km 34.5, Ixtapaluca 56530, Mexico; (E.C.-G.); (L.A.G.-H.); (K.G.-I.)
| | - Osvaldo J. Quintana-Romero
- Department of Chemistry, Center for Research and Advanced Studies of the National Polytechnic Institute (CINVESTAV-IPN), Av. Instituto Politécnico Nacional 2508, Mexico City 07360, Mexico; (O.J.Q.-R.); (A.A.-C.)
| | - Armando Ariza-Castolo
- Department of Chemistry, Center for Research and Advanced Studies of the National Polytechnic Institute (CINVESTAV-IPN), Av. Instituto Politécnico Nacional 2508, Mexico City 07360, Mexico; (O.J.Q.-R.); (A.A.-C.)
| | - Christian Guerra-Araiza
- Medical Research Unit in Pharmacology, Specialities Hospital Bernardo Sepúlveda, National Medical Center XXI Century, Social Security Mexican Institute (IMSS), Av. Cuauhtémoc 330, Mexico City 06720, Mexico;
| | - Laura Martino-Roaro
- Design, Isolation, and Synthesis of Bioactive Molecules Research Group, Chemical Sciences School, Universidad La Salle-México, Benjamín Franklin 45, Mexico City 06140, Mexico; (H.G.-Á.); (A.B.-J.); (M.M.-A.); (G.O.G.-O.); (L.M.-R.)
- Incarnate Word University Center, Tlacoquemecatl 433, Mexico City 03100, Mexico
| | - Dulce María Meneses-Ruiz
- Noncommunicable Diseases Research Group, Universidad La Salle-México, Benjamín Franklin 45, Mexico City 06140, Mexico;
| | - Rodolfo Pinto-Almazán
- Molecular Biology in Metabolic and Neurodegenerative Diseases Laboratory, Research Unit, High Speciality Regional Hospital of Ixtapaluca (HRAEI), Carretera Federal México-Puebla Km 34.5, Ixtapaluca 56530, Mexico; (E.C.-G.); (L.A.G.-H.); (K.G.-I.)
| | - Marco A. Loza-Mejía
- Design, Isolation, and Synthesis of Bioactive Molecules Research Group, Chemical Sciences School, Universidad La Salle-México, Benjamín Franklin 45, Mexico City 06140, Mexico; (H.G.-Á.); (A.B.-J.); (M.M.-A.); (G.O.G.-O.); (L.M.-R.)
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Matsumoto Y, Kurakado S, Sugita T. Evaluating Candida albicans biofilm formation in silkworms. Med Mycol 2021; 59:201-205. [PMID: 32780824 DOI: 10.1093/mmy/myaa064] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 02/28/2020] [Revised: 06/27/2020] [Accepted: 07/15/2020] [Indexed: 12/28/2022] Open
Abstract
Candida albicans is a pathogenic fungus that causes deep mycosis in immunocompromised patients and forms a biofilm on catheter surfaces. Here we showed that C. albicans infection of silkworms led to biofilm formation on the surface of polyurethane fibers, a catheter substrate material, while inside the silkworm body. Silkworms inserted with polyurethane fibers survived for at least 48 hours. When silkworms inserted with polyurethane fibers were subsequently infected with C. albicans, biofilm formed on the surface of the polyurethane fiber within 24 hours in the silkworm body. These results suggest that silkworms can be used to evaluate C. albicans biofilm formation.
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Affiliation(s)
- Yasuhiko Matsumoto
- Department of Microbiology, Meiji Pharmaceutical University, 2-522-1, Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Sanae Kurakado
- Department of Microbiology, Meiji Pharmaceutical University, 2-522-1, Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Takashi Sugita
- Department of Microbiology, Meiji Pharmaceutical University, 2-522-1, Noshio, Kiyose, Tokyo 204-8588, Japan
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15
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Liu Y, Bai X, A L. In vitro and in vivo evaluation of a ciprofloxacin delivery system based on poly(DLLA-co-GA-co-CL) for treatment of chronic osteomyelitis. J Appl Biomater Funct Mater 2020; 18:2280800020975727. [PMID: 33270476 DOI: 10.1177/2280800020975727] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Chronic osteomyelitis causes serious injury to patients. Antibiotic delivery systems based on poly(lactide-co-glycolide) (PLGA) have great potential for treatment of chronic osteomyelitis. However, PLGA has a glass-transition temperature that is higher than physiological temperatures, resulting in a lack of flexibility for implantation into the bone marrow cavity. As an alternative, poly(d, l-lactide-co-glycolide-co-ε-caprolactone) (PLGC) presents good flexibility due to the introduction of poly(ε-caprolactone) segments. To develop a new strategy for treatment of chronic osteomyelitis, a ciprofloxacin delivery system was prepared using PLGC as carriers, the antibacterial effects of which were evaluated both in vivo and in vitro. The in vitro release behavior showed that the average release reached 268.5 μg/days on day 33, with a cumulative release rate of 56.01%. A bacteriostatic ring, with a diameter of 26.83 ± 0.83 mm, was produced by ciprofloxacin against Staphylococcus aureus after 30 days of release via our ciprofloxacin-PLGC system. After 4 weeks of treatment in vivo, chronic-osteomyelitis-model rats had a bodyweight of 385.83 ± 17.23 g and a normal white-blood-cell count, as well as a lower number of bacterial colonies per gram of bone tissue of (10.6 ± 3.0) × 101 CFU/g. Furthermore, no inflammatory cells were observed via hematoxylin-and-eosin staining, and normal bone structure was observed via X-ray. Taken together, our findings indicate that our novel ciprofloxacin-PLGC system yielded noteworthy antibacterial effects both in vitro and in vivo, suggesting that it may be useful for treating patients with chronic osteomyelitis.
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Affiliation(s)
- Yixiu Liu
- Department of Orthopaedics, The Central Hospital Affiliated to Shenyang Medical College, Shenyang, China
| | - Xizhuang Bai
- Department of Sports Medicine and Joint Surgery, The People's Hospital of Liaoning Province, Shenyang, China
| | - Liang A
- Department of Orthopaedics, The Central Hospital Affiliated to Shenyang Medical College, Shenyang, China
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16
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Abrha S, Bartholomaeus A, Tesfaye W, Thomas J. Impetigo Animal Models: A Review of Their Feasibility and Clinical Utility for Therapeutic Appraisal of Investigational Drug Candidates. Antibiotics (Basel) 2020; 9:E694. [PMID: 33066386 DOI: 10.3390/antibiotics9100694] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/06/2020] [Accepted: 10/07/2020] [Indexed: 01/12/2023] Open
Abstract
Impetigo (school sores), a superficial skin infection commonly seen in children, is caused by the gram-positive bacteria Staphylococcus aureus and/or Streptococcus pyogenes. Antibiotic treatments, often topical, are used as the first-line therapy for impetigo. The efficacy of potential new antimicrobial compounds is first tested in in vitro studies and, if effective, followed by in vivo studies using animal models and/or humans. Animal models are critical means for investigating potential therapeutics and characterizing their safety profile prior to human trials. Although several reviews of animal models for skin infections have been published, there is a lack of a comprehensive review of animal models simulating impetigo for the selection of therapeutic drug candidates. This review critically examines the existing animal models for impetigo and their feasibility for testing the in vivo efficacy of topical treatments for impetigo and other superficial bacterial skin infections.
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17
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Naves LZ, Gerdolle DA, de Andrade OS, Markus Maria Gresnigt M. Seeing is believing? When scanning electron microscopy (SEM) meets clinical dentistry: The replica technique. Microsc Res Tech 2020; 83:1118-1123. [PMID: 32643268 DOI: 10.1002/jemt.23503] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 11/19/2019] [Revised: 04/06/2020] [Accepted: 04/16/2020] [Indexed: 11/08/2022]
Abstract
In restorative dentistry, the in situ replication of intra-oral situations, is based on a non-invasive and non-destructive scanning electron microscopy (SEM) evaluation method. The technique is suitable for investigation restorative materials and dental hard- and soft-tissues, and its interfaces. Surface characteristics, integrity of interfaces (margins), or fracture analysis (chipping, cracks, etc.) with reliable resolution and under high magnification (from ×50 to ×5,000). Overall the current study aims to share detailed and reproducible information about the replica technique. Specific goals are: (a) to describe detailed each step involved in producing a replica of an intra-oral situation, (b) to validate an integrated workflow based on a rational sequence from visual examination, to macrophotography and SEM analysis using the replica technique; (c) to present three clinical cases documented using the technique. A compilation of three clinical situations/cases were analyzed here by means the replica technique showing a wide range of possibilities that can be reached and explored with the described technique. This guidance document will contribute to a more accurate use of the replica technique and help researchers and clinicians to understand and identify issues related to restorative procedures under high magnification.
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Affiliation(s)
- Lucas Zago Naves
- Department of Restorative Dentistry and Biomaterials, University Medical Center Groningen, The University of Groningen, Center for Dentistry and Oral Hygiene, Groningen, The Netherlands
| | | | | | - Marco Markus Maria Gresnigt
- Department of Restorative Dentistry and Biomaterials, University Medical Center Groningen, The University of Groningen, Center for Dentistry and Oral Hygiene, Groningen, The Netherlands.,Department of Special Dental Care, Martini Hospital, Groningen, The Netherlands
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Park H, Cha KH, Hong SH, Abuzar SM, Lee S, Ha ES, Kim JS, Baek IH, Kim MS, Hwang SJ. Pharmaceutical Characterization and In Vivo Evaluation of Orlistat Formulations Prepared by the Supercritical Melt-Adsorption Method Using Carbon Dioxide: Effects of Mesoporous Silica Type. Pharmaceutics 2020; 12:E333. [PMID: 32276311 DOI: 10.3390/pharmaceutics12040333] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 03/27/2020] [Accepted: 04/07/2020] [Indexed: 12/02/2022] Open
Abstract
Orlistat, an anti-obesity drug, has two critical issues—the first is its low efficacy due to low water solubility and the second is side effects such as oily spotting due to its lipase inhibition. The present study was designed to propose a solution using a formulation with mesoporous silica to simultaneously overcome two issues. Orlistat was loaded onto mesoporous silica by the supercritical melt-adsorption (SCMA) method, using carbon dioxide (CO2). Various types of mesoporous silica were used as adsorbents, and the effects of the pore volume, diameter and particle size of mesoporous silica on the pharmaceutical characteristics were evaluated by various solid-state characterization methods and in vitro and in vivo studies in relation to pharmacological efficacy and the improvement of side effects. The results showed that the pore volume and diameter determine loadable drug amount inside pores and crystallinity. The dissolution was significantly influenced by crystallinity, pore diameter and particle size, and the inhibition of lipase activity was in proportion to the dissolution rate. In vivo studies revealed that the serum triglyceride (TG) concentration was significantly decreased in the group administered amorphous orlistat-loaded Neuisilin®UFL2 with the highest in vitro dissolution rate and lipase activity inhibition in comparison to the commercial product. Furthermore, oily spotting tests in rats revealed that undigested oil was adsorbed onto mesoporous silica after orlistat was released in the gastro-intestinal tract, and it correlated with in vitro result that oil adsorption capacity was dependent on the surface area of empty mesoporous silica. Therefore, it was concluded that mesoporous silica type plays a major role in determining the pharmaceutical characteristics of orlistat formulation prepared using SCMA with CO2 for improving the low solubility and overcoming the side effects.
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Ma Q, Qian W, Tao W, Zhou Y, Xue B. Delivery Of Curcumin Nanoliposomes Using Surface Modified With CD133 Aptamers For Prostate Cancer. Drug Des Devel Ther 2019; 13:4021-4033. [PMID: 31819373 PMCID: PMC6886545 DOI: 10.2147/dddt.s210949] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 10/11/2019] [Indexed: 12/13/2022]
Abstract
Aim The aim of this study was to characterize curcumin (CUR)-loaded CD133 aptamer A15 liposomes for their antitumor activity in vitro and in vivo. Methods The modified CUR liposomes were prepared by the thin-film hydration technique. Results The particles showed spherical shape under electron microscopy with sizes <100 nm. Initial drug burst release was observed within 2 hrs and then the drug was continuously released over 48 hrs. No aggregation or precipitation of liposomes was observed during storage for 3 months. In vitro results showed that blank LPs had lower cellular cytotoxicity. Both liposomes of CUR (with or without A15 modified) exhibited a similar trend of cellular cytotoxicity at the same concentration. With the extension of incubation time, A15-CUR LPs showed a greater inhibitory effect on cells. Cell internalization in DU145 cells was higher for A15-CUR LPs than others. An in vivo study using DU145 prostate carcinoma bearing mice showed that A15-CUR LPs reduced tumor growth more than other forms of CUR. Conclusion These results indicate that A15 modified CUR liposomes are a promising candidate for antitumor drug delivery.
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Affiliation(s)
- Qi Ma
- Department of Ultrasound, The Second Affiliated Hospital of Soochow University, Suzhou, People's Republic of China
| | - Wei Qian
- Department of Urology, The Second Affiliated Hospital of Soochow University, Suzhou, People's Republic of China
| | - Wei Tao
- Department of Urology, The Second Affiliated Hospital of Soochow University, Suzhou, People's Republic of China
| | - Yanling Zhou
- Department of Operation, The Second Affiliated Hospital of Soochow University, Suzhou, People's Republic of China
| | - Boxin Xue
- Department of Urology, The Second Affiliated Hospital of Soochow University, Suzhou, People's Republic of China
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Jain J, Narayanan V, Chaturvedi S, Pai S, Sunil S. In Vivo Evaluation of Withania somnifera-Based Indian Traditional Formulation ( Amukkara Choornam), Against Chikungunya Virus-Induced Morbidity and Arthralgia. J Evid Based Integr Med 2019; 23:2156587218757661. [PMID: 29484895 PMCID: PMC5871050 DOI: 10.1177/2156587218757661] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Chikungunya viral fever results in extreme morbidity and arthralgia in affected individuals. Currently, modern medicines providing symptomatic relief for the acute febrile phase and the chronic arthritic phase are only options available. Traditional Indian medical system, however, uses specific formulations for treatment of this infection; one such polyherbal formulation used to treat the postpyretic phase of chikungunya is amukkara choornam. The current study was undertaken to study the efficacy of amukkara choornam in the treatment of chikungunya in C57BL/6J mice. The formulation when administered to chikungunya-infected mice relieved morbidity and joint swelling. Analysis of virus clearance in brain and joint tissues on formulation treatment revealed a direct correlation of viral load in brain to morbidity during infection; likewise, joint swelling receded prior to complete viral clearance explaining possible immunomodulatory effect of amukkara choornam. This study provides insight into the possible mode of action of amukkara choornam during chikungunya.
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Affiliation(s)
- Jaspreet Jain
- International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Vimal Narayanan
- International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Shivam Chaturvedi
- International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Somnath Pai
- Amity University, Noida, Uttar Pradesh, India
| | - Sujatha Sunil
- International Centre for Genetic Engineering and Biotechnology, New Delhi, India
- Sujatha Sunil, Vector Borne Diseases Group, International Center for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi 110067, India.
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McKittrick CM, McKee S, Kennedy S, Oldroyd K, Wheel M, Pontrelli G, Dixon S, McGinty S, McCormick C. Combining mathematical modelling with in vitro experiments to predict in vivo drug-eluting stent performance. J Control Release 2019; 303:151-161. [PMID: 30878363 DOI: 10.1016/j.jconrel.2019.03.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [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: 02/05/2019] [Revised: 03/08/2019] [Accepted: 03/10/2019] [Indexed: 11/15/2022]
Abstract
In this study, we developed a predictive model of in vivo stent based drug release and distribution that is capable of providing useful insights into performance. In a combined mathematical modelling and experimental approach, we created two novel sirolimus-eluting stent coatings with quite distinct doses and release kinetics. Using readily measurable in vitro data, we then generated parameterised mathematical models of drug release. These were then used to simulate in vivo drug uptake and retention. Finally, we validated our model predictions against data on drug kinetics and efficacy obtained in a small in vivo evaluation. In agreement with the in vivo experimental results, our mathematical model predicted consistently higher sirolimus content in tissue for the higher dose stents compared with the lower dose stents. High dose stents resulted in statistically significant improvements in three key efficacy measures, providing further evidence of a basic relationship between dose and efficacy within DES. However, our mathematical modelling suggests a more complex relationship is at play, with efficacy being dependent not only on delivering an initial dose of drug sufficient to achieve receptor saturation, but also on the consequent drug release rate being tuned to ensure prolonged saturation. In summary, we have demonstrated that our combined in vitro experimental and mathematical modelling framework may be used to predict in vivo DES performance, opening up the possibility of an in silico approach to optimising the drug release profile and ultimately the effectiveness of the device.
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Affiliation(s)
- Craig M McKittrick
- Department of Biomedical Engineering, University of Strathclyde, Glasgow, UK
| | - Sean McKee
- Department of Mathematics & Statistics, University of Strathclyde, Glasgow, UK
| | - Simon Kennedy
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK
| | | | - Marcus Wheel
- Department of Mechanical & Aerospace Engineering, University of Strathclyde, Glasgow, UK
| | | | | | - Sean McGinty
- Division of Biomedical Engineering, University of Glasgow, Glasgow, UK.
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Rodrigues GA, Lutz D, Shen J, Yuan X, Shen H, Cunningham J, Rivers HM. Topical Drug Delivery to the Posterior Segment of the Eye: Addressing the Challenge of Preclinical to Clinical Translation. Pharm Res 2018; 35:245. [PMID: 30374744 DOI: 10.1007/s11095-018-2519-x] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Accepted: 10/03/2018] [Indexed: 12/29/2022]
Abstract
Topical delivery of therapeutics to the posterior segment of the eye remains the “holy grail” of ocular drug delivery. As an example, anti–vascular endothelial growth factor biologics, such as ranibizumab, aflibercept, and bevacizumab, are delivered by intravitreal injection to treat neovascular age-related macular degeneration and, although these drugs have revolutionized treatment of the disease, less invasive alternatives to intravitreal injection are desired. Multiple reports in the literature have demonstrated topical delivery of both small and large molecules to the back of the eye in small animal models. Despite this progress, successful translation to larger species, and ultimately humans, has yet to be demonstrated. Selection of animal models with relevant ocular anatomy and physiology, along with appropriate experimental design, is critical to enable more relevant feasibility assessments and increased probability of successful translation.
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Boles L, Alexander C, Pace L, Haggard W, Bumgardner J, Jennings J. Development and Evaluation of an Injectable Chitosan/β-Glycerophosphate Paste as a Local Antibiotic Delivery System for Trauma Care. J Funct Biomater 2018; 9:E56. [PMID: 30322006 DOI: 10.3390/jfb9040056] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 09/23/2018] [Accepted: 10/09/2018] [Indexed: 01/03/2023] Open
Abstract
Complex open musculoskeletal wounds are a leading cause of morbidity worldwide, partially due to a high risk of bacterial contamination. Local delivery systems may be used as adjunctive therapies to prevent infection, but they may be nondegradable, possess inadequate wound coverage, or migrate from the wound site. To address this issue, a thermo-responsive, injectable chitosan paste was fabricated by incorporating beta-glycerophosphate. The efficacy of thermo-paste as an adjunctive infection prevention tool was evaluated in terms of cytocompatibility, degradation, antibacterial, injectability, and inflammation properties. In vitro studies demonstrated thermo-paste may be loaded with amikacin and vancomycin and release inhibitory levels for at least 3 days. Further, approximately 60% of thermo-paste was enzymatically degraded within 7 days in vitro. The viability of cells exposed to thermo-paste exceeded ISO 10993-5 standards with approximately 73% relative viability of a control chitosan sponge. The ejection force of thermo-paste, approximately 20 N, was lower than previously studied paste formulations and within relevant clinical ejection force ranges. An in vivo murine biocompatibility study demonstrated that thermo-paste induced minimal inflammation after implantation for 7 days, similar to previously developed chitosan pastes. Results from these preliminary preclinical studies indicate that thermo-paste shows promise for further development as an antibiotic delivery system for infection prevention.
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Simon-Yarza T, Mielcarek A, Couvreur P, Serre C. Nanoparticles of Metal-Organic Frameworks: On the Road to In Vivo Efficacy in Biomedicine. Adv Mater 2018; 30:e1707365. [PMID: 29876985 DOI: 10.1002/adma.201707365] [Citation(s) in RCA: 331] [Impact Index Per Article: 55.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 02/26/2018] [Indexed: 05/21/2023]
Abstract
In the past few years, numerous studies have demonstrated the great potential of nano particles of metal-organic frameworks (nanoMOFs) at the preclinical level for biomedical applications. Many of them were reported very recently based on their bioactive composition, anticancer application, or from a general drug delivery/theranostic perspective. In this review, the authors aim at providing a global view of the studies that evaluated MOFs' biomedical applications at the preclinical stage, when in vivo tests are described either for pharmacological applications or for toxicity evaluation. The authors first describe the current surface engineering approaches that are crucial to understand the in vivo behavior of the nanoMOFs. Finally, after a detailed and comprehensive analysis of the in vivo studies reported with MOFs so far, and considering the general evolution of the drug delivery science, the authors suggest new directions for future research in the use of nanoMOFs for biomedical applications.
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Affiliation(s)
- Teresa Simon-Yarza
- INSERM U1148, Laboratory for Vascular Translational Science, X. Bichat Hospital, Paris Diderot University, Paris 13 University, 75018, Paris, France
| | - Angelika Mielcarek
- Institut Galien, Université Paris-Sud, UMR CNRS 8612, University Paris Saclay, 92290, Chatenay Malabry, France
- Institut des Matériaux Poreux de Paris, Ecole Normale Supérieure, Ecole Supérieure de Physique et de Chimie Industrielles de Paris, FRE CNRS 2000, PSL Research University, 75005, Paris, France
| | - Patrick Couvreur
- Institut Galien, Université Paris-Sud, UMR CNRS 8612, University Paris Saclay, 92290, Chatenay Malabry, France
| | - Christian Serre
- Institut des Matériaux Poreux de Paris, Ecole Normale Supérieure, Ecole Supérieure de Physique et de Chimie Industrielles de Paris, FRE CNRS 2000, PSL Research University, 75005, Paris, France
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Spirou SV, Costa Lima SA, Bouziotis P, Vranješ-Djurić S, Efthimiadou EΚ, Laurenzana A, Barbosa AI, Garcia-Alonso I, Jones C, Jankovic D, Gobbo OL. Recommendations for In Vitro and In Vivo Testing of Magnetic Nanoparticle Hyperthermia Combined with Radiation Therapy. Nanomaterials (Basel) 2018; 8:E306. [PMID: 29734795 PMCID: PMC5977320 DOI: 10.3390/nano8050306] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 04/22/2018] [Accepted: 04/29/2018] [Indexed: 12/23/2022]
Abstract
Magnetic nanoparticle (MNP)-mediated hyperthermia (MH) coupled with radiation therapy (RT) is a novel approach that has the potential to overcome various practical difficulties encountered in cancer treatment. In this work, we present recommendations for the in vitro and in vivo testing and application of the two treatment techniques. These recommendations were developed by the members of Working Group 3 of COST Action TD 1402: Multifunctional Nanoparticles for Magnetic Hyperthermia and Indirect Radiation Therapy ("Radiomag"). The purpose of the recommendations is not to provide definitive answers and directions but, rather, to outline those tests and considerations that a researcher must address in order to perform in vitro and in vivo studies. The recommendations are divided into 5 parts: (a) in vitro evaluation of MNPs; (b) in vitro evaluation of MNP-cell interactions; (c) in vivo evaluation of the MNPs; (d) MH combined with RT; and (e) pharmacokinetic studies of MNPs. Synthesis and characterization of the MNPs, as well as RT protocols, are beyond the scope of this work.
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Affiliation(s)
- Spiridon V Spirou
- Department of Radiology, Sismanoglio General Hospital of Attica, Sismanogliou 1, Marousi 15126, Athens, Greece.
| | - Sofia A Costa Lima
- LAQV, REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Porto 4050-313, Portugal.
| | - Penelope Bouziotis
- Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Center for Scientific Research "Demokritos", Aghia Paraskevi, Athens 15310, Greece.
| | - Sanja Vranješ-Djurić
- "Vinča" Institute of Nuclear Sciences, University of Belgrade, Belgrade 11351, Serbia.
| | - Eleni Κ Efthimiadou
- Inorganic Chemistry Laboratory, Chemistry Department, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou 15784, Greece.
- Institute of Nanoscience and Nanotechnology, NCSR Demokritos, Agia Paraskevi Attikis, Athens 15310, Greece.
| | - Anna Laurenzana
- Department of Biomedical and Clinical Science "Mario Serio", University of Florence, 50134 Firenze, Italy.
| | - Ana Isabel Barbosa
- LAQV, REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Porto 4050-313, Portugal.
| | - Ignacio Garcia-Alonso
- Department of Surgery, Radiology & Ph.M. University of the Basque Country, Bilbao E48940, Spain.
| | - Carlton Jones
- NanoTherics Ltd., Studio 3, Unit 3, Silverdale Enterprise Centre Kents Lane, Newcastle under Lyme ST5 6SR, UK.
| | - Drina Jankovic
- "Vinča" Institute of Nuclear Sciences, University of Belgrade, Belgrade 11351, Serbia.
| | - Oliviero L Gobbo
- School of Pharmacy and Pharmaceutical Sciences, Panoz Institute, Trinity College Dublin, D02PN40 Dublin, Ireland.
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Sutton TC, Lamirande EW, Bock KW, Moore IN, Koudstaal W, Rehman M, Weverling GJ, Goudsmit J, Subbarao K. In Vitro Neutralization Is Not Predictive of Prophylactic Efficacy of Broadly Neutralizing Monoclonal Antibodies CR6261 and CR9114 against Lethal H2 Influenza Virus Challenge in Mice. J Virol 2017; 91:e01603-17. [PMID: 29046448 DOI: 10.1128/JVI.01603-17] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 09/12/2017] [Indexed: 11/20/2022] Open
Abstract
Influenza viruses of the H1N1, H2N2, and H3N2 subtypes have caused previous pandemics. H2 influenza viruses represent a pandemic threat due to continued circulation in wild birds and limited immunity in the human population. In the event of a pandemic, antiviral agents are the mainstay for treatment, but broadly neutralizing antibodies (bNAbs) may be a viable alternative for short-term prophylaxis or treatment. The hemagglutinin stem binding bNAbs CR6261 and CR9114 have been shown to protect mice from severe disease following challenge with H1N1 and H5N1 and with H1N1, H3N2, and influenza B viruses, respectively. Early studies with CR6261 and CR9114 showed weak in vitro activity against human H2 influenza viruses, but the in vivo efficacy against H2 viruses is unknown. Therefore, we evaluated these antibodies against human- and animal-origin H2 viruses A/Ann Arbor/6/1960 (H2N2) (AA60) and A/swine/MO/4296424/06 (H2N3) (Sw06). In vitro, CR6261 neutralized both H2 viruses, while CR9114 only neutralized Sw06. To evaluate prophylactic efficacy, mice were given CR6261 or CR9114 and intranasally challenged 24 h later with lethal doses of AA60 or Sw06. Both antibodies reduced mortality, weight loss, airway inflammation, and pulmonary viral load. Using engineered bNAb variants, antibody-mediated cell cytotoxicity reporter assays, and Fcγ receptor-deficient (Fcer1g-/-) mice, we show that the in vivo efficacy of CR9114 against AA60 is mediated by Fcγ receptor-dependent mechanisms. Collectively, these findings demonstrate the in vivo efficacy of CR6261 and CR9114 against H2 viruses and emphasize the need for in vivo evaluation of bNAbs.IMPORTANCE bNAbs represent a strategy to prevent or treat infection by a wide range of influenza viruses. The evaluation of these antibodies against H2 viruses is important because H2 viruses caused a pandemic in 1957 and could cross into humans again. We demonstrate that CR6261 and CR9114 are effective against infection with H2 viruses of both human and animal origin in mice, despite the finding that CR9114 did not display in vitro neutralizing activity against the human H2 virus. These findings emphasize the importance of in vivo evaluation and testing of bNAbs.
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Montenegro L, Pasquinucci L, Zappalà A, Chiechio S, Turnaturi R, Parenti C. Rosemary Essential Oil-Loaded Lipid Nanoparticles: In Vivo Topical Activity from Gel Vehicles. Pharmaceutics 2017; 9:pharmaceutics9040048. [PMID: 29065483 PMCID: PMC5750654 DOI: 10.3390/pharmaceutics9040048] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 10/18/2017] [Accepted: 10/18/2017] [Indexed: 02/03/2023] Open
Abstract
Although rosemary essential oil (EO) shows many biological activities, its topical benefits have not been clearly demonstrated. In this work, we assessed the effects on skin hydration and elasticity of rosemary EO after topical application via gel vehicles in human volunteers. To improve its topical efficacy, rosemary EO was loaded into lipid nanoparticles (NLCs) consisting of cetyl palmitate as a solid lipid, and non-ionic surfactants. Such NLCs were prepared using different ratios of EO/solid lipid and those containing EO 3% w/w and cetyl pamitate 7% w/w were selected for in vivo studies, showing the best technological properties (small particle size, low polydispersity index and good stability). Gels containing free EO or EO-loaded NLCs were applied on the hand skin surface of ten healthy volunteers twice a day for one week. Skin hydration and elasticity changes were recorded using the instrument Soft Plus. Gels containing EO-loaded NLCs showed a significant increase in skin hydration in comparison with gels containing free EO. Skin elasticity increased, as well, although to a lesser extent. The results of this study point out the usefulness of rosemary EO-loaded NLCs for the treatment of cutaneous alterations involving loss of skin hydration and elasticity.
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Affiliation(s)
- Lucia Montenegro
- Department of Drug Sciences, Pharmaceutical Technology Section, University of Catania, Viale A. Doria 6, 95125 Catania, Italy.
| | - Lorella Pasquinucci
- Department of Drug Sciences, Medicinal Chemistry Section, University of Catania, Viale A. Doria 6, 95125 Catania, Italy.
| | - Agata Zappalà
- Department of Biomedical and Biotechnological Sciences, Physiology Section, University of Catania, Via Santa Sofia, 87, 95125 Catania, Italy.
| | - Santina Chiechio
- Department of Drug Sciences, Pharmacology and Toxicology Section, University of Catania, Viale A. Doria 6, 95125 Catania, Italy.
| | - Rita Turnaturi
- Department of Drug Sciences, Medicinal Chemistry Section, University of Catania, Viale A. Doria 6, 95125 Catania, Italy.
| | - Carmela Parenti
- Department of Drug Sciences, Pharmacology and Toxicology Section, University of Catania, Viale A. Doria 6, 95125 Catania, Italy.
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Imai K, Hiromoto S. In Vivo Evaluation of Bulk Metallic Glasses for Osteosynthesis Devices. Materials (Basel) 2016; 9:E676. [PMID: 28773792 DOI: 10.3390/ma9080676] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Revised: 07/28/2016] [Accepted: 08/04/2016] [Indexed: 11/17/2022]
Abstract
Bulk metallic glasses (BMGs) show higher strength and lower Young’s modulus than Ti-6Al-4V alloy and SUS 316L stainless steel. This study aimed to perform in vivo evaluations of Zr65Al7.5Ni10Cu17.5 BMGs for osteosynthesis devices. In the study for intramedullary implants, osteotomies of the femoral bones were performed in male Wistar rats and were stabilized with Zr65Al7.5Ni10Cu17.5 BMGs, Ti-6Al-4V alloy, or 316L stainless steel intramedullary nails for 12 weeks. In the study for bone surface implants, Zr65Al7.5Ni10Cu17.5 BMGs ribbons were implanted on the femur surface for 6 weeks. Local effects on the surrounding soft tissues of the implanted BMGs were assessed by histological observation. Implanted materials’ surfaces were examined using scanning electron microscopy equipped with energy dispersive X-ray spectroscopy (SEM-EDS). In the study for intramedullary implants, bone healing after osteotomy was assessed by peripheral quantitative computed tomography (QCT) and mechanical tests. Histological observation showed no findings of the biological effects. SEM-EDS showed no noticeable change on the surface of BMGs, while Ca and P deposition was seen on the Ti-6Al-4V alloy surface, and irregularities were seen on the 316L stainless steel surface. Mechanical test and peripheral QCT showed that, although there was no significant difference, bone healing of BMGs was more than that of Ti-6Al-4V alloy. The results indicated that Zr-based BMGs can lead to bone healing equal to or greater than Ti-6Al-4V alloy. Zr-based BMGs exhibited the advantage of less bone bonding and easier implant removal compared with Ti-6Al-4V alloy. In conclusion, Zr-based BMGs are promising for osteosynthesis devices that are eventually removed.
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Fukayama T, Ozai Y, Shimokawadoko H, Aytemiz D, Tanaka R, Machida N, Asakura T. Effect of fibroin sponge coating on in vivo performance of knitted silk small diameter vascular grafts. Organogenesis 2016; 11:137-51. [PMID: 26496652 DOI: 10.1080/15476278.2015.1093268] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
Vascular grafts under 5 mm or less in diameter are not developed due to a problem caused by early thrombus formation, neointimal hyperplasia, etc. Bombyx mori silk fibroin (SF) which has biodegradability and tissue infiltration is focused as tube and coating material of vascular grafts. Coating is an important factor to maintain the strength of the anastomotic region of vascular grafts, and to prevent the blood leak from the vascular grafts after implantation. Therefore, in this research, we focused on the SF concentration of the coating solution, and tissue infiltration and remodeling were compared among each SF concentration. Silk poly (-ethylene) glycol diglycidyl ether (PGDE) coating with concentrations of 1.0%, 2.5%, 5.0%, and 7.5% SF were applied for the double-raschel knitted small-sized vessel with 1.5 mm diameter and 1cm in length. The grafts were implanted in the rat abdominal aorta and removed after 3 weeks or 3 months. Vascular grafts patency was monitored by ultrasound, and morphological evaluation was performed by histopathological examination. SF concentration had no significant effects on the patency rate. However, tissue infiltration was significantly higher in the sample of 2.5% SF in 3 weeks, and 1.0% and 2.5% SF in 3 months. Also, in comparison of length inside of the graft, stenosis were not found in 3 weeks, however, found with 5.0% and 7.5% in 3 months. From these results, it is clear that 2.5% SF coating is the most suitable concentration, based on the characteristics of less stenosis, early tissue infiltration, and less neointimal hyperplasia.
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Affiliation(s)
- Toshiharu Fukayama
- a Department of Veterinary Surgery ; Tokyo University of Agriculture & Technology ; Fuchu, Tokyo , Japan
| | - Yusuke Ozai
- a Department of Veterinary Surgery ; Tokyo University of Agriculture & Technology ; Fuchu, Tokyo , Japan
| | - Haruka Shimokawadoko
- b Department of Biotechnology ; Tokyo University of Agriculture & Technology; Koganei , Tokyo , Japan
| | - Derya Aytemiz
- b Department of Biotechnology ; Tokyo University of Agriculture & Technology; Koganei , Tokyo , Japan
| | - Ryou Tanaka
- a Department of Veterinary Surgery ; Tokyo University of Agriculture & Technology ; Fuchu, Tokyo , Japan
| | - Noboru Machida
- c Laboratory of Veterinary Clinical Oncology; Tokyo University of Agriculture & Technology ; Fuchu, Tokyo , Japan
| | - Tetsuo Asakura
- b Department of Biotechnology ; Tokyo University of Agriculture & Technology; Koganei , Tokyo , Japan
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30
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Wei Y, Guo J, Zheng X, Wu J, Zhou Y, Yu Y, Ye Y, Zhang L, Zhao L. Preparation, pharmacokinetics and biodistribution of baicalin-loaded liposomes. Int J Nanomedicine 2014; 9:3623-30. [PMID: 25120360 PMCID: PMC4128791 DOI: 10.2147/ijn.s66312] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Baicalin (BA) is a major constituent of Scutellaria baicalensis Georgi, a medicinal herb. Previous pharmacokinetic studies of BA showed its low oral bioavailability. The aim of the present study was to develop a novel BA-loaded liposome (BA-LP) to enhance oral bioavailability. BA-LP, composed of BA, Tween(®) 80, Phospholipon(®) 90H, and citric acid at weight ratio of 96/50/96/50, respectively, was prepared by the effervescent dispersion technique and characterized in terms of morphology, size, zeta potential, encapsulation efficiency, and the in vitro release. Pharmacokinetics and biodistribution studies were carried out in rats after oral administration of BA-LP and a carboxymethyl cellulose suspension containing BA (BA-CMC) as a control. BA-LP exhibited a spherical shape by transmission electron microscopy observation. BA-LP had a mean particle size of 373±15.5 nm, zeta potential of -20.1±0.22 mV, and encapsulation efficiency of 82.7%±0.59%. The BA-LP showed a sustained-release behavior, and the in vitro drug-release kinetic model fit well with the Weibull distribution equation: lnln (1/(1-Q)) =0.609 lnt -1.230 (r=0.995). The oral bioavailability and the peak concentration of the BA-LP was threefold and 2.82-fold that of BA-CMC, respectively. The in vivo distribution results indicated that drug concentrations were significantly increased in the liver, kidney, and lung in the case of BA-LP, which were 5.59-fold, 2.33-fold, and 1.25-fold higher than those of BA-CMC, respectively. In conclusion, the study suggested that BA-LP might be a potential oral drug delivery system to improve bioavailability of BA.
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Affiliation(s)
- Yumeng Wei
- School of Pharmacy, Luzhou Medical College, Luzhou City, Sichuan Province, People's Republic of China
| | - Jianmin Guo
- Institute of Basic Medical Sciences, Luzhou Medical College, Luzhou City, Sichuan Province, People's Republic of China
| | - Xiaoli Zheng
- Institute of Basic Medical Sciences, Luzhou Medical College, Luzhou City, Sichuan Province, People's Republic of China
| | - Jun Wu
- Department of Clinical Pharmacy and Outcomes Sciences, College of Pharmacy, University of South Carolina, Greenville, SC, USA
| | - Yang Zhou
- School of Pharmacy, Luzhou Medical College, Luzhou City, Sichuan Province, People's Republic of China
| | - Yu Yu
- School of Pharmacy, Chongqing Medical University, Chongqing, People's Republic of China
| | - Yun Ye
- School of Pharmacy, Luzhou Medical College, Luzhou City, Sichuan Province, People's Republic of China
| | - Liangke Zhang
- School of Pharmacy, Chongqing Medical University, Chongqing, People's Republic of China
| | - Ling Zhao
- School of Pharmacy, Luzhou Medical College, Luzhou City, Sichuan Province, People's Republic of China
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De Aza PN, Peña JI, Luklinska ZB, Meseguer-Olmo L. Bioeutectic ® Ceramics for Biomedical Application Obtained by Laser Floating Zone Method. In vivo Evaluation. Materials (Basel) 2014; 7:2395-2410. [PMID: 28788574 PMCID: PMC5453347 DOI: 10.3390/ma7042395] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 02/20/2014] [Accepted: 03/10/2014] [Indexed: 11/16/2022]
Abstract
In this study, the Bioeutectic® blocks were inserted into the critical size defects of eight rabbits, using both tibiae, and the physical and chemical nature of the remodeled interface between the Bioeutectic® implants and the surrounding bone were performed at four and 15 months. The results showed a new fully mineralized bone growing in direct contact with the implants. The ionic exchange, taking place at the implant interface with the body fluids was essential in the process of the implant integration through a dissolution-precipitation-transformation mechanism. The study found the interface biologically and chemically active over the 15 months implantation period. The osteoblastic cells migrated towards the interface and colonized the surface at the contact areas with the bone. The new developed apatite structure of porous morphology mimics natural bone.
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Affiliation(s)
- Piedad N De Aza
- Instituto de Bioingenieria, Universidad Miguel Hernandez, Avda. Ferrocarril s/n, Elche 03202, Alicante, Spain.
| | - Jose I Peña
- Department of Science and Technology of Materials and Fluids, Material Science Institute of Aragon, University of Zaragoza-CSIC, c/ Maria de Luna 3, Zaragoza 50018, Spain.
| | - Zofia B Luklinska
- Materials Science Department, School of Engineering and Materials Science, Queen Mary University of London, Mile End Road London E1 4NS, UK.
| | - Luis Meseguer-Olmo
- Unidad de Bioingeniería ósea, Servicio de Cirugía Ortopédica, Hospital Clínico Universitario Virgen de la Arrixaca, Universidad de Murcia, Murcia 30120, Spain.
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Al-Saidan SM, Krishnaiah YSR, Patro S, Satyanaryana V. In vitro and in vivo evaluation of guar gum matrix tablets for oral controlled release of water-soluble diltiazem hydrochloride. AAPS PharmSciTech 2005; 6:E14-21. [PMID: 16353958 PMCID: PMC2750406 DOI: 10.1208/pt060105] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2004] [Accepted: 11/26/2004] [Indexed: 11/30/2022] Open
Abstract
The objective of the study was to develop guar gum matrix tablets for oral controlled release of water-soluble diltiazem hydrochloride. Matrix tablets of diltiazem hydrochloride, using various viscosity grades of guar gum in 2 proportions, were prepared by wet granulation method and subjected to in vitro drug release studies. Diltiazem hydrochloride matrix tablets containing either 30% wt/wt low-viscosity (LM1), 40% wt/wt medium-viscosity (MM2), or 50% wt/wt high-viscosity (HM2) guar gum showed controlled release. The drug release from all guar gum matrix tablets followed first-order kinetics via Fickian-diffusion. Further, the results of in vitro drug release studies in simulated gastrointestinal and colonic fluids showed that HM2 tablets provided controlled release comparable with marketed sustained release diltiazem hydrochloride tablets (D-SR tablets). Guar gum matrix tablets HM2 showed no change in physical appearance, drug content, or in dissolution pattern after storage at 40 degrees C/relative humidity 75% for 6 months. When subjected to in vivo pharmacokinetic evaluation in healthy volunteers, the HM2 tablets provided a slow and prolonged drug release when compared with D-SR tablets. Based on the results of in vitro and in vivo studies it was concluded that that guar gum matrix tablets provided oral controlled release of water-soluble diltiazem hydrochloride.
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Affiliation(s)
- Saleh M. Al-Saidan
- Department of Pharmaceutics, Faculty of Pharmacy, Health Science Center, Kuwait University, Kuwait
| | - Yellela S. R. Krishnaiah
- Department of Pharmaceutics, Faculty of Pharmacy, Health Science Center, Kuwait University, Kuwait
| | - S. Patro
- Department of Pharmaceutical Sciences, Andhra University, 530 003 Visakhapatnam, India
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