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Shrestha J, Razavi Bazaz S, Ding L, Vasilescu S, Idrees S, Söderström B, Hansbro PM, Ghadiri M, Ebrahimi Warkiani M. Rapid separation of bacteria from primary nasal samples using inertial microfluidics. Lab Chip 2022; 23:146-156. [PMID: 36484411 DOI: 10.1039/d2lc00794k] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Microbial populations play a crucial role in human health and the development of many diseases. These diseases often arise from the explosive proliferation of opportunistic bacteria, such as those in the nasal cavity. Recently, there have been increases in the prevalence of these opportunistic pathogens displaying antibiotic resistance. Thus, the study of the nasal microbiota and its bacterial diversity is critical in understanding pathogenesis and developing microbial-based therapies for well-known and emerging diseases. However, the isolation and analysis of these populations for clinical study complicates the already challenging task of identifying and profiling potentially harmful bacteria. Existing methods are limited by low sample throughput, expensive labeling, and low recovery of bacteria with ineffective removal of cells and debris. In this study, we propose a novel microfluidic channel with a zigzag configuration for enhanced isolation and detection of bacteria from human clinical nasal swabs. This microfluidic zigzag channel separates the bacteria from epithelial cells and debris by size differential focusing. As such, pure bacterial cell fractions devoid of large contaminating debris or epithelial cells are obtained. DNA sequencing performed on the separated bacteria defines the diversity and species present. This novel method of bacterial separation is simple, robust, rapid, and cost-effective and has the potential to be used for the rapid identification of bacterial cell populations from clinical samples.
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Affiliation(s)
- Jesus Shrestha
- School of Biomedical Engineering, University of Technology Sydney, Sydney, New South Wales 2007, Australia.
- Woolcock Institute of Medical Research, Respiratory Technology Group, University of Sydney, Sydney, New South Wales 2037, Australia
| | - Sajad Razavi Bazaz
- School of Biomedical Engineering, University of Technology Sydney, Sydney, New South Wales 2007, Australia.
| | - Lin Ding
- School of Biomedical Engineering, University of Technology Sydney, Sydney, New South Wales 2007, Australia.
| | - Steven Vasilescu
- School of Biomedical Engineering, University of Technology Sydney, Sydney, New South Wales 2007, Australia.
| | - Sobia Idrees
- Centre for Inflammation, Centenary Institute and University of Technology Sydney, Faculty of Science, School of Life Sciences, University of Technology Sydney, Sydney 2007, Australia
| | - Bill Söderström
- Australian Institute for Microbiology and Infection, Faculty of Science, University of Technology Sydney, New South Wales 2007, Australia
| | - Philip M Hansbro
- Centre for Inflammation, Centenary Institute and University of Technology Sydney, Faculty of Science, School of Life Sciences, University of Technology Sydney, Sydney 2007, Australia
| | - Maliheh Ghadiri
- School of Biomedical Engineering, University of Technology Sydney, Sydney, New South Wales 2007, Australia.
- Woolcock Institute of Medical Research, Respiratory Technology Group, University of Sydney, Sydney, New South Wales 2037, Australia
| | - Majid Ebrahimi Warkiani
- School of Biomedical Engineering, University of Technology Sydney, Sydney, New South Wales 2007, Australia.
- Institute for Biomedical Materials and Devices, Faculty of Science, University of Technology Sydney, New South Wales 2007, Australia
- Institute of Molecular Medicine, Sechenov First Moscow State University, Moscow 119991, Russia
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2
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Xu J, Ghadiri M, Svolos M, McParland B, Traini D, Ong HX, Young PM. Investigating Potential TRPV1 Positive Feedback to Explain TRPV1 Upregulation in Airway Disease States. Drug Dev Ind Pharm 2022; 47:1924-1934. [PMID: 35473456 DOI: 10.1080/03639045.2022.2070759] [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] [Indexed: 10/18/2022]
Abstract
OBJECTIVE The airway epithelium is a potential source of pathophysiology through activation of transient potential receptor vallinoid type 1 (TRPV1) channel. A positive feedback cycle caused by TRPV1 activity is hypothesised to induce upregulation and production of inflammatory cytokines, leading to exacerbations of chronic airway diseases. These cytokine and protein regulation effects were investigated in this study. METHODS Healthy (BEAS-2B) and cancer-derived (Calu-3) airway epithelial cell lines were assessed for changes to TRPV1 protein expression and mRNA expression following exposure to capsaicin (5 µM to 50 µM), and TRPV1 modulators including heat (43 °C), and hydrochloric acid (pH 3.4 to pH 6.4). Cytotoxicity was measured to determine the working concentration ranges of treatment. Subsequent bronchoconstriction by TRPV1 activation with capsaicin was measured on guinea pig airway tissue to confirm locally mediated activity without the action of known neuronal inputs. RESULTS TRPV1 protein expression was not different for all capsaicin, acidity, and heat exposures (P > 0.05), and was replicated in mRNA protein expression (P > 0.05). IL-6 and IL-8 expression were lower in BEAS-2B and Calu-3 cell lines exposed with acidity and heat (P < 0.05), but not consistently with capsaicin exposure, with potential cytotoxic effects possible. CONCLUSIONS TRPV1 expression was present in airway epithelial cells but its expression was not changed after activation by TRPV1 activators. Thus, it was not apparent the reason for reported TRPV1 upregulation in patients with airway disease states. More complex mechanisms are likely involved and will require further investigation.
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Affiliation(s)
- Jesse Xu
- Respiratory Technology Group, Woolcock Institute of Medical Research, 431 Glebe Point Road, Glebe NSW 2037, Australia.,School of Pharmacy, Faculty of Medicine and Health, The University of Sydney, Camperdown NSW 2006, Australia
| | - Maliheh Ghadiri
- Respiratory Technology Group, Woolcock Institute of Medical Research, 431 Glebe Point Road, Glebe NSW 2037, Australia
| | - Maree Svolos
- Respiratory Technology Group, Woolcock Institute of Medical Research, 431 Glebe Point Road, Glebe NSW 2037, Australia
| | - Brent McParland
- School of Pharmacy, Faculty of Medicine and Health, The University of Sydney, Camperdown NSW 2006, Australia
| | - Daniela Traini
- Respiratory Technology Group, Woolcock Institute of Medical Research, 431 Glebe Point Road, Glebe NSW 2037, Australia.,Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Australia
| | - Hui Xin Ong
- Respiratory Technology Group, Woolcock Institute of Medical Research, 431 Glebe Point Road, Glebe NSW 2037, Australia.,Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Australia
| | - Paul M Young
- Respiratory Technology Group, Woolcock Institute of Medical Research, 431 Glebe Point Road, Glebe NSW 2037, Australia.,Department of Marketing, Macquarie Business School, Macquarie University, NSW 2109, Australia
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Zafar U, Hare C, Hassanpour A, Ghadiri M. Assessing powder flowability at low stresses using ball indentation method: Evaluation of constraint factor. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.04.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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5
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Shrestha J, Ryan ST, Mills O, Zhand S, Razavi Bazaz S, Hansbro PM, Ghadiri M, Ebrahimi Warkiani M. A 3D-printed microfluidic platform for simulating the effects of CPAP on the nasal epithelium. Biofabrication 2021; 13. [PMID: 33561837 DOI: 10.1088/1758-5090/abe4c1] [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: 09/07/2020] [Accepted: 02/09/2021] [Indexed: 02/01/2023]
Abstract
Obstructive sleep apnoea (OSA) is a chronic disorder that involves a decrease or complete cessation of airflow during sleep. It occurs when the muscles supporting the soft tissues in the throat relax during sleep, causing narrowing or closure of the upper airway. Sleep apnoea is a serious medical condition with an increased risk of cardiovascular complications and impaired quality of life. Continuous positive airway pressure (CPAP) is the most effective treatment for moderate to severe cases of OSA and is effective in mild sleep apnoea. However, CPAP therapy is associated with the development of several nasal side effects and is inconvenient for the user, leading to low compliance rates. The effects of CPAP treatment on the upper respiratory system, as well as the pathogenesis of side effects, are incompletely understood and not adequately researched. To better understand the effects of CPAP treatment on the upper respiratory system, we developed an in vitro 3D-printed microfluidic platform. A nasal epithelial cell line, RPMI 2650, was then exposed to certain conditions to mimic the in-vivo environment. To create these conditions, the microfluidic device was utilized to expose nasal epithelial cells grown and differentiated at the air-liquid interface. The airflow was similar to what is experienced with CPAP, with pressure ranging between 0-20 cm of H20. Cells exposed to pressure showed decreased barrier integrity, change in cellular shape, and increased cell death (lactate dehydrogenase release into media) compared to unstressed cells. Stressed cells also showed increased secretions of inflammatory markers IL-6 and IL-8 and had increased production of ATP. Our results suggest that stress induced by airflow leads to structural, metabolic, and inflammatory changes in the nasal epithelium, which may be responsible for developing nasal side-effects following CPAP treatment.
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Affiliation(s)
- Jesus Shrestha
- University of Technology Sydney, 15 Broadway, Sydney, New South Wales, 2007, AUSTRALIA
| | - Sean Thomas Ryan
- The University of Sydney, 15 Broadway, Sydney, New South Wales, 2006, AUSTRALIA
| | - Oliver Mills
- The University of Sydney, Camperdown, Sydney, New South Wales, 2006, AUSTRALIA
| | - Sareh Zhand
- University of Technology Sydney, 15 Broadway, Sydney, New South Wales, 2007, AUSTRALIA
| | - Sajad Razavi Bazaz
- School of Biomedical Engineering, University of Technology Sydney, 15 Broadway, Sydney, New South Wales, 2007, AUSTRALIA
| | | | - Maliheh Ghadiri
- The University of Sydney, Camperdown, Sydney, New South Wales, 2006, AUSTRALIA
| | - Majid Ebrahimi Warkiani
- School of Biomedical Engineering, University of Technology Sydney Faculty of Engineering and Information Technology, 15 Broadway, Sydney, New South Wales, 2007, AUSTRALIA
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6
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Grau-Bartual S, Al-Jumaily AM, Young PM, Traini D, Ghadiri M. Effect of continuous positive airway pressure treatment on permeability, inflammation and mucus production of human epithelial cells. ERJ Open Res 2020; 6:00327-2019. [PMID: 32537464 PMCID: PMC7276533 DOI: 10.1183/23120541.00327-2019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 03/17/2020] [Indexed: 11/05/2022] Open
Abstract
Continuous positive airway pressure (CPAP) therapy is the gold standard treatment for obstructive sleep apnoea, which affects millions of people worldwide. However, this therapy normally results in symptoms such as dryness, sneezing, rhinorrhoea, post-nasal drip, nasal congestion and epistaxis in the upper airways. Using bronchial epithelial (Calu-3) and nasal epithelial (RPMI 2650) cells in an in vitro respiratory model, this study, for the first time, investigates the effect of CPAP positive pressure on the human respiratory epithelial mechanisms that regulate upper airways lubrication characteristics. To understand how the epithelium and mucus are affected by this therapy, several parameters were determined before and after positive pressure application. This work demonstrates that the positive pressure not only compresses the cells, but also reduces their permeability and mucus secretion rate, thus drying the airway surface liquid layer and altering the mucus/water ratio. It is also observed that the respiratory epithelia is equally inflamed without or with external humidification during CPAP application. These findings clearly identify the causes of the side-effects reported by patients under CPAP therapy.
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Affiliation(s)
- Sandra Grau-Bartual
- Institute of Biomedical Technologies, Auckland University of Technology, Auckland, New Zealand
| | - Ahmed M Al-Jumaily
- Institute of Biomedical Technologies, Auckland University of Technology, Auckland, New Zealand
| | - Paul M Young
- Woolcock Institute of Medical Research, University of Sydney, Sydney, Australia
| | - Daniela Traini
- Woolcock Institute of Medical Research, University of Sydney, Sydney, Australia
| | - Maliheh Ghadiri
- Woolcock Institute of Medical Research, University of Sydney, Sydney, Australia
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7
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Ghadiri M, Grunstein RR. Clinical side effects of continuous positive airway pressure in patients with obstructive sleep apnoea. Respirology 2020; 25:593-602. [PMID: 32212210 DOI: 10.1111/resp.13808] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 12/17/2019] [Revised: 02/05/2020] [Accepted: 03/03/2020] [Indexed: 12/14/2022]
Abstract
CPAP is considered the gold standard treatment in OSA and is highly efficacious in controlling OSA symptoms. However, treatment effectiveness is limited because of many factors including low adherence due to side effects. This review highlights the range of side effects associated with CPAP therapy in patients with OSA. This information is important for the initiation of patients onto CPAP as well as their continued care while on treatment, given the increase in non-medically supervised CPAP care models in use globally.
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Affiliation(s)
- Maliheh Ghadiri
- Woolcock Institute of Medical Research, Respiratory Technology Group, Sydney, NSW, Australia.,Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia.,School of Biomedical Engineering, University of Technology Sydney, Sydney, NSW, Australia
| | - Ronald R Grunstein
- Woolcock Institute of Medical Research, Respiratory Technology Group, Sydney, NSW, Australia.,Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia.,Royal Prince Alfred Hospital, Sydney, NSW, Australia
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8
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Shrestha J, Razavi Bazaz S, Aboulkheyr Es H, Yaghobian Azari D, Thierry B, Ebrahimi Warkiani M, Ghadiri M. Lung-on-a-chip: the future of respiratory disease models and pharmacological studies. Crit Rev Biotechnol 2020; 40:213-230. [PMID: 31906727 DOI: 10.1080/07388551.2019.1710458] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [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: 12/26/2022]
Abstract
Recently, organ-on-a-chip models, which are microfluidic devices that mimic the cellular architecture and physiological environment of an organ, have been developed and extensively investigated. The chips can be tailored to accommodate the disease conditions pertaining to many organs; and in the case of this review, the lung. Lung-on-a-chip models result in a more accurate reflection compared to conventional in vitro models. Pharmaceutical drug testing methods traditionally use animal models in order to evaluate pharmacological and toxicological responses to a new agent. However, these responses do not directly reflect human physiological responses. In this review, current and future applications of the lung-on-a-chip in the respiratory system will be discussed. Furthermore, the limitations of current conventional in vitro models used for respiratory disease modeling and drug development will be addressed. Highlights of additional translational aspects of the lung-on-a-chip will be discussed in order to demonstrate the importance of this subject for medical research.
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Affiliation(s)
- Jesus Shrestha
- School of Biomedical Engineering, University of Technology Sydney, Sydney, Australia.,Faculty of Medicine and Health, Woolcock Institute of Medical Research, The University of Sydney, Sydney, Australia
| | - Sajad Razavi Bazaz
- School of Biomedical Engineering, University of Technology Sydney, Sydney, Australia
| | | | | | - Benjamin Thierry
- Future Industries Institute and ARC Centre of Excellence in Convergent Bio and Nano Science and Technology, University of South Australia, Australia
| | - Majid Ebrahimi Warkiani
- School of Biomedical Engineering, University of Technology Sydney, Sydney, Australia.,Institute of Molecular Medicine, Sechenov University, Moscow, Russia
| | - Maliheh Ghadiri
- School of Biomedical Engineering, University of Technology Sydney, Sydney, Australia.,Faculty of Medicine and Health, Woolcock Institute of Medical Research, The University of Sydney, Sydney, Australia.,School of Medicine and Public Health, The University of Sydney, Sydney, Australia
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9
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Shrestha J, Ghadiri M, Shanmugavel M, Razavi Bazaz S, Vasilescu S, Ding L, Ebrahimi Warkiani M. A rapidly prototyped lung-on-a-chip model using 3D-printed molds. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.ooc.2020.100001] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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10
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Fallacara A, Busato L, Pozzoli M, Ghadiri M, Ong HX, Young PM, Manfredini S, Traini D. Co-Spray-Dried Urea Cross-Linked Hyaluronic Acid and Sodium Ascorbyl Phosphate as Novel Inhalable Dry Powder Formulation. J Pharm Sci 2019; 108:2964-2971. [DOI: 10.1016/j.xphs.2019.04.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 03/14/2019] [Accepted: 04/10/2019] [Indexed: 12/18/2022]
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11
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Ghadiri M, Young PM, Traini D. Strategies to Enhance Drug Absorption via Nasal and Pulmonary Routes. Pharmaceutics 2019; 11:pharmaceutics11030113. [PMID: 30861990 PMCID: PMC6470976 DOI: 10.3390/pharmaceutics11030113] [Citation(s) in RCA: 122] [Impact Index Per Article: 24.4] [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: 01/16/2019] [Revised: 03/03/2019] [Accepted: 03/05/2019] [Indexed: 12/13/2022] Open
Abstract
New therapeutic agents such as proteins, peptides, and nucleic acid-based agents are being developed every year, making it vital to find a non-invasive route such as nasal or pulmonary for their administration. However, a major concern for some of these newly developed therapeutic agents is their poor absorption. Therefore, absorption enhancers have been investigated to address this major administration problem. This paper describes the basic concepts of transmucosal administration of drugs, and in particular the use of the pulmonary or nasal routes for administration of drugs with poor absorption. Strategies for the exploitation of absorption enhancers for the improvement of pulmonary or nasal administration are discussed, including use of surfactants, cyclodextrins, protease inhibitors, and tight junction modulators, as well as application of carriers such as liposomes and nanoparticles.
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Affiliation(s)
- Maliheh Ghadiri
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2006, Australia.
| | - Paul M Young
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2006, Australia.
| | - Daniela Traini
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2006, Australia.
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12
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Fallacara A, Busato L, Pozzoli M, Ghadiri M, Ong HX, Young PM, Manfredini S, Traini D. In vitro characterization of physico-chemical properties, cytotoxicity, bioactivity of urea-crosslinked hyaluronic acid and sodium ascorbyl phosphate nasal powder formulation. Int J Pharm 2019; 558:341-350. [PMID: 30659923 DOI: 10.1016/j.ijpharm.2019.01.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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: 11/26/2018] [Revised: 01/08/2019] [Accepted: 01/10/2019] [Indexed: 11/16/2022]
Abstract
An innovative lyophilized dry powder formulation consisting of urea-crosslinked hyaluronic acid (HA-CL) and sodium ascorbyl phosphate (SAP) - LYO HA-CL - SAP- was prepared and characterized in vitro for physico-chemical and biological properties. The aim was to understand if LYO HA-CL - SAP could be used as adjuvant treatment for nasal inflammatory diseases. LYO HA-CL - SAP was suitable for nasal delivery and showed to be not toxic on human nasal septum carcinoma-derived cells (RPMI 2650 cells) at the investigated concentrations. It displayed porous, polygonal particles with unimodal, narrow size distribution, mean geometric diameter of 328.3 ± 27.5 µm, that is appropriate for nasal deposition with no respirable fraction and 88.7% of particles with aerodynamic diameter >14.1 µm. Additionally, the formulation showed wound healing ability on RPMI 2650 cells, and reduced interleukin-8 (IL-8) level in primary nasal epithelial cells pre-induced with lipopolysaccharide (LPS). Transport study across RPMI 2650 cells showed that HA-CL could act not only as carrier for SAP and active ingredient itself, but potentially also as mucoadhesive agent. In conclusion, these results suggest that HA-CL and SAP had anti-inflammatory activity and acted in combination to accelerate wound healing. Therefore, LYO HA-CL - SAP could be a potential adjuvant in nasal anti-inflammatory formulations.
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Affiliation(s)
- Arianna Fallacara
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Faculty of Medicine and Health, The University of Sydney, 431 Glebe Point Road, Glebe, NSW 2037, Australia; Department of Life Sciences and Biotechnology, University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy.
| | - Laura Busato
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Faculty of Medicine and Health, The University of Sydney, 431 Glebe Point Road, Glebe, NSW 2037, Australia; Department of Life Sciences and Biotechnology, University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy
| | - Michele Pozzoli
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Faculty of Medicine and Health, The University of Sydney, 431 Glebe Point Road, Glebe, NSW 2037, Australia
| | - Maliheh Ghadiri
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Faculty of Medicine and Health, The University of Sydney, 431 Glebe Point Road, Glebe, NSW 2037, Australia
| | - Hui Xin Ong
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Faculty of Medicine and Health, The University of Sydney, 431 Glebe Point Road, Glebe, NSW 2037, Australia
| | - Paul M Young
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Faculty of Medicine and Health, The University of Sydney, 431 Glebe Point Road, Glebe, NSW 2037, Australia
| | - Stefano Manfredini
- Department of Life Sciences and Biotechnology, University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy
| | - Daniela Traini
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Faculty of Medicine and Health, The University of Sydney, 431 Glebe Point Road, Glebe, NSW 2037, Australia.
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Lee WH, Loo CY, Ghadiri M, Leong CR, Young PM, Traini D. The potential to treat lung cancer via inhalation of repurposed drugs. Adv Drug Deliv Rev 2018; 133:107-130. [PMID: 30189271 DOI: 10.1016/j.addr.2018.08.012] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [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: 10/30/2017] [Revised: 08/27/2018] [Accepted: 08/31/2018] [Indexed: 01/10/2023]
Abstract
Lung cancer is a highly invasive and prevalent disease with ineffective first-line treatment and remains the leading cause of cancer death in men and women. Despite the improvements in diagnosis and therapy, the prognosis and outcome of lung cancer patients is still poor. This could be associated with the lack of effective first-line oncology drugs, formation of resistant tumors and non-optimal administration route. Therefore, the repurposing of existing drugs currently used for different indications and the introduction of a different method of drug administration could be investigated as an alternative to improve lung cancer therapy. This review describes the rationale and development of repositioning of drugs for lung cancer treatment with emphasis on inhalation. The review includes the current progress of repurposing non-cancer drugs, as well as current chemotherapeutics for lung malignancies via inhalation. Several potential non-cancer drugs such as statins, itraconazole and clarithromycin, that have demonstrated preclinical anti-cancer activity, are also presented. Furthermore, the potential challenges and limitations that might hamper the clinical translation of repurposed oncology drugs are described.
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Affiliation(s)
- Wing-Hin Lee
- Faculty of Pharmacy and Health Sciences, Royal College of Medicine Perak, Universiti Kuala Lumpur (RCMP UniKL), Ipoh, Perak, Malaysia; Respiratory Technology, Woolcock Institute of Medical Research, and Discipline of Pharmacology, Faculty of Medicine and Health, The University of Sydney, NSW 2037, Australia; Centre for Lung Cancer Research, 431 Glebe Point Road, 2037, Australia.
| | - Ching-Yee Loo
- Faculty of Pharmacy and Health Sciences, Royal College of Medicine Perak, Universiti Kuala Lumpur (RCMP UniKL), Ipoh, Perak, Malaysia; Respiratory Technology, Woolcock Institute of Medical Research, and Discipline of Pharmacology, Faculty of Medicine and Health, The University of Sydney, NSW 2037, Australia; Centre for Lung Cancer Research, 431 Glebe Point Road, 2037, Australia
| | - Maliheh Ghadiri
- Respiratory Technology, Woolcock Institute of Medical Research, and Discipline of Pharmacology, Faculty of Medicine and Health, The University of Sydney, NSW 2037, Australia; Centre for Lung Cancer Research, 431 Glebe Point Road, 2037, Australia
| | - Chean-Ring Leong
- Section of Bioengineering Technology, Universiti Kuala Lumpur (UniKL) MICET, Alor Gajah, Melaka, Malaysia
| | - Paul M Young
- Respiratory Technology, Woolcock Institute of Medical Research, and Discipline of Pharmacology, Faculty of Medicine and Health, The University of Sydney, NSW 2037, Australia; Centre for Lung Cancer Research, 431 Glebe Point Road, 2037, Australia
| | - Daniela Traini
- Respiratory Technology, Woolcock Institute of Medical Research, and Discipline of Pharmacology, Faculty of Medicine and Health, The University of Sydney, NSW 2037, Australia; Centre for Lung Cancer Research, 431 Glebe Point Road, 2037, Australia
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14
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Shahmoradi M, Rohanizadeh R, Sonvico F, Ghadiri M, Swain M. Synthesis of stabilized hydroxyapatite nanosuspensions for enamel caries remineralization. Aust Dent J 2018; 63:356-364. [PMID: 29804291 DOI: 10.1111/adj.12624] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/20/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND The aim of this study was to develop and evaluate a method for synthesizing a stable suspension of hydroxyapatite nanoparticles and to test its efficacy for remineralizing carious enamel lesions. METHODS Hydroxyapatite (HA) particles were synthesized using wet chemistry. Synthesized particles were introduced into a high-pressure homogenizer (5-10 homogenization passes at 15 000 psi) in the presence of different stabilizers. Size and distribution of the resultant particles were determined using dynamic light scattering (DLS). The morphology and composition of the nanoparticles were determined using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). Subsequently, artificial lesions were treated with HA nanosuspension plus artificial saliva or a fluoride-containing artificial saliva only. Visual analysis and quantification of the lesion mineral density before and after remineralization were performed using microcomputed tomography. RESULTS DLS and SEM results confirmed the formation of nonagglomerated HA nanoparticles (20-40 nm) following high-pressure homogenization treatment. Quantitative evaluation of the lesions showed that remineralization of the lesion with hydroxyapatite nanosuspension led to a significantly higher level of mineral gain compared to the control group (P < 0.05). CONCLUSION High-pressure homogenization is an effective method for facile preparation of a stable suspension of hydroxyapatite nanoparticles. Treatment of artificial lesions with nonagglomerated spherical HA nanoparticles improves the remineralization of enamel lesion.
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Affiliation(s)
- M Shahmoradi
- Biomaterials and Bioengineering, Faculty of Dentistry, University of Sydney, Westmead, New South Wales, Australia
| | - R Rohanizadeh
- Faculty of Pharmacy, University of Sydney, Sydney, New South Wales, Australia
| | - F Sonvico
- School of Pharmacy, University Technology Sydney, Sydney, New South Wales, Australia
| | - M Ghadiri
- Woolcock Institute of Medical Research, Sydney, New South Wales, Australia
| | - M Swain
- Biomaterials and Bioengineering, Faculty of Dentistry, University of Sydney, Westmead, New South Wales, Australia
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15
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Zafar U, Alfano F, Ghadiri M. Evaluation of a new dispersion technique for assessing triboelectric charging of powders. Int J Pharm 2018; 543:151-159. [DOI: 10.1016/j.ijpharm.2018.03.049] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 03/25/2018] [Accepted: 03/27/2018] [Indexed: 11/16/2022]
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Fallacara A, Busato L, Pozzoli M, Ghadiri M, Ong HX, Young PM, Manfredini S, Traini D. Combination of urea-crosslinked hyaluronic acid and sodium ascorbyl phosphate for the treatment of inflammatory lung diseases: An in vitro study. Eur J Pharm Sci 2018; 120:96-106. [PMID: 29723596 DOI: 10.1016/j.ejps.2018.04.042] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 03/16/2018] [Accepted: 04/27/2018] [Indexed: 12/29/2022]
Abstract
This in vitro study evaluated, for the first time, the safety and the biological activity of a novel urea-crosslinked hyaluronic acid component and sodium ascorbyl phosphate (HA-CL - SAP), singularly and/or in combination, intended for the treatment of inflammatory lung diseases. The aim was to understand if the combination HA-CL - SAP had an enhanced activity with respect to the combination native hyaluronic acid (HA) - SAP and the single SAP, HA and HA-CL components. Sample solutions displayed pH, osmolality and viscosity values suitable for lung delivery and showed to be not toxic on epithelial Calu-3 cells at the concentrations used in this study. The HA-CL - SAP displayed the most significant reduction in interleukin-6 (IL-6) and reactive oxygen species (ROS) levels, due to the combined action of HA-CL and SAP. Moreover, this combination showed improved cellular healing (wound closure) with respect to HA - SAP, SAP and HA, although at a lower rate than HA-CL alone. These preliminary results showed that the combination HA-CL - SAP could be suitable to reduce inflammation and oxidative stress in lung disorders like acute respiratory distress syndrome, asthma, emphysema and chronic obstructive pulmonary disease, where inflammation is prominent.
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Affiliation(s)
- Arianna Fallacara
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Sydney Medical School, The University of Sydney, 431 Glebe Point Road, Glebe, NSW 2037, Australia; Department of Life Sciences and Biotechnology, University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy..
| | - Laura Busato
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Sydney Medical School, The University of Sydney, 431 Glebe Point Road, Glebe, NSW 2037, Australia; Department of Life Sciences and Biotechnology, University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy..
| | - Michele Pozzoli
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Sydney Medical School, The University of Sydney, 431 Glebe Point Road, Glebe, NSW 2037, Australia.
| | - Maliheh Ghadiri
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Sydney Medical School, The University of Sydney, 431 Glebe Point Road, Glebe, NSW 2037, Australia.
| | - Hui Xin Ong
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Sydney Medical School, The University of Sydney, 431 Glebe Point Road, Glebe, NSW 2037, Australia.
| | - Paul M Young
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Sydney Medical School, The University of Sydney, 431 Glebe Point Road, Glebe, NSW 2037, Australia.
| | - Stefano Manfredini
- Department of Life Sciences and Biotechnology, University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy..
| | - Daniela Traini
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Sydney Medical School, The University of Sydney, 431 Glebe Point Road, Glebe, NSW 2037, Australia.
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Ghadiri M, Canney F, Pacciana C, Colombo G, Young PM, Traini D. The use of fatty acids as absorption enhancer for pulmonary drug delivery. Int J Pharm 2018; 541:93-100. [DOI: 10.1016/j.ijpharm.2018.02.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Revised: 01/15/2018] [Accepted: 02/15/2018] [Indexed: 01/12/2023]
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Ali M, Ghadiri M. Analysis of triboelectric charging of particles due to aerodynamic dispersion by a pulse of pressurised air jet. ADV POWDER TECHNOL 2017. [DOI: 10.1016/j.apt.2017.07.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Jalal Mirian S, Reza Mohammadi A, Karimi G, Ismail Nia K, Motamedi G, Hamidiyeh H, Ghadiri M. Survey on helminthic and protozoan contaminations in alimentary canal of ostrich at Tehran Province slaughterhouses. J Fundam and Appl Sci 2017. [DOI: 10.4314/jfas.v9i1s.734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Fulchini F, Nan W, Ghadiri M, Yazdan Panah M, Bertholin S, Amblard B, Cloupet A, Gauthier T. CFD-DEM Analysis of Particle Attrition in a Jet in a Fluidised Bed. EPJ Web Conf 2017. [DOI: 10.1051/epjconf/201714007017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Hare C, Zafar U, Ghadiri M, Freeman T, Clayton J, Murtagh M. Correction to “Analysis of the Dynamics of the FT4 Powder Rheometer” [Powder Technol. 285 (2015) 123–127]. POWDER TECHNOL 2017. [DOI: 10.1016/j.powtec.2017.02.061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Ghadiri M, Young PM, Jarolimek W, Grau GER, Oliver BGG, Traini D. The effect of non-specific tight junction modulators on the transepithelial transport of poorly permeable drugs across airway epithelial cells. J Drug Target 2016; 25:342-349. [DOI: 10.1080/1061186x.2016.1258703] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Maliheh Ghadiri
- Department of Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Sydney Medical School, Glebe, Australia
| | - Paul M. Young
- Department of Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Sydney Medical School, Glebe, Australia
| | | | - Georges E. R. Grau
- Vascular Immunology Unit, Sydney Medical School & Bosch Institute, University of Sydney, Camperdown, Australia
| | - Brian G. G. Oliver
- Respiratory Cellular and Molecular Biology, Woolcock Institute of Medical Research, The University of Sydney and School of Life Sciences, University of Technology, Sydney, Australia
| | - Daniela Traini
- Department of Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Sydney Medical School, Glebe, Australia
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Vivacqua V, Ghadiri M, Abdullah A, Hassanpour A, Al-Marri M, Azzopardi B, Hewakandamby B, Kermani B. Analysis of partial electrocoalescence by Level-Set and finite element methods. Chem Eng Res Des 2016. [DOI: 10.1016/j.cherd.2016.08.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Ghadiri M, Mamlouk M, Spicer P, Jarolimek W, Grau GER, Young PM, Traini D. Effect of polyunsaturated fatty acids (PUFAs) on airway epithelial cells' tight junction. Pulm Pharmacol Ther 2016; 40:30-8. [PMID: 27453493 DOI: 10.1016/j.pupt.2016.07.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 06/21/2016] [Accepted: 07/20/2016] [Indexed: 01/22/2023]
Affiliation(s)
- Maliheh Ghadiri
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Sydney Medical School, Australia
| | - Mariam Mamlouk
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Sydney Medical School, Australia
| | - Patrick Spicer
- Complex Fluids Research Groups, School of Chemical Engineering, The University of New South Wales, Sydney, Australia
| | | | - Georges E R Grau
- Vascular Immunology Unit, Sydney Medical School & Bosch Institute, University of Sydney, Camperdown, Australia
| | - Paul M Young
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Sydney Medical School, Australia
| | - Daniela Traini
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Sydney Medical School, Australia.
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Abstract
INTRODUCTION During the last few decades, cell-based therapies have shown great potential to treat patients with lung diseases. It has been proposed that the administration of cells into an injured lung could be considered as a therapeutic method to repair and replace lost lung tissue. Using this method, transplanted cells with the ability to proliferate and differentiate into alveolar cells, have been suggested as a therapeutic strategy for IPF treatment. AREAS COVERED In this review, the latest investigations using various types of cells for IPF therapy have been presented. The cells studied for cell-based therapies in IPF are lung alveolar epithelial cells, lung resident stem cells and exogenous adult stem cells such as MSCs. EXPERT OPINION After many years of investigation, the use of cell-based therapies to treat IPF is still at the experimental phase. Problems include bioethical issues, safety of cell transplantation, routes of delivery and the dose and timing of administration. Further investigations are necessary to establish the best strategy for using cell-based therapies effectively for the treatment of IPF.
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Affiliation(s)
- Maliheh Ghadiri
- a Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology , Sydney Medical School , Sydney , NSW , Australia
| | - Paul M Young
- a Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology , Sydney Medical School , Sydney , NSW , Australia
| | - Daniela Traini
- a Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology , Sydney Medical School , Sydney , NSW , Australia
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Vivacqua V, Mhatre S, Ghadiri M, Abdullah A, Hassanpour A, Al-Marri M, Azzopardi B, Hewakandamby B, Kermani B. Electrocoalescence of water drop trains in oil under constant and pulsatile electric fields. Chem Eng Res Des 2015. [DOI: 10.1016/j.cherd.2015.10.006] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Hau H, Rohanizadeh R, Ghadiri M, Chrzanowski W. A mini-review on novel intraperiodontal pocket drug delivery materials for the treatment of periodontal diseases. Drug Deliv Transl Res 2015; 4:295-301. [PMID: 25786883 DOI: 10.1007/s13346-013-0171-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Periodontal disease is defined as chronic inflammatory condition characterized by the destruction of the periodontal tissues causing loss of connective tissue attachment, loss of alveolar bone, and the formation of pathological pockets around the diseased teeth. The use of systemic antibiotics has been advocated for its treatment, but concerns emerged with respect to adverse drug reactions and its contribution to bacterial resistance. Thus local drug delivery devices have been developed that aim to deliver a high concentration of antimicrobial drugs directly to the affected site, while minimizing drug's systemic exposure. A burst release of antimicrobial agent from carrier, resulting in a short and inadequate exposure of bacteria residing in periodontal pocket to the agent, remains the main challenge of current local delivery systems for the treatment of periodontal disease. This review aims to investigate and compare different local antimicrobial delivery systems with regard to the treatment of periodontal disease.
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Affiliation(s)
- H Hau
- Faculty of Pharmacy, University of Sydney, Sydney, NSW, 2006, Australia
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Mhatre S, Vivacqua V, Ghadiri M, Abdullah A, Al-Marri M, Hassanpour A, Hewakandamby B, Azzopardi B, Kermani B. Electrostatic phase separation: A review. Chem Eng Res Des 2015. [DOI: 10.1016/j.cherd.2015.02.012] [Citation(s) in RCA: 144] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Abstract
Different types of cationic clay minerals and their applications in various biological systems.
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Affiliation(s)
- M. Ghadiri
- University of Sydney
- Faculty of Pharmacy
- Sydney
- Australia
| | - W. Chrzanowski
- University of Sydney
- Faculty of Pharmacy
- Sydney
- Australia
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Centre for Regenerative Medicine
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Hanaor DAH, Ghadiri M, Chrzanowski W, Gan Y. Scalable surface area characterization by electrokinetic analysis of complex anion adsorption. Langmuir 2014; 30:15143-15152. [PMID: 25495551 DOI: 10.1021/la503581e] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
By means of the in situ electrokinetic assessment of aqueous particles in conjunction with the addition of anionic adsorbates, we develop and examine a new approach to the scalable characterization of the specific accessible surface area of particles in water. For alumina powders of differing morphology in mildly acidic aqueous suspensions, the effective surface charge was modified by carboxylate anion adsorption through the incremental addition of oxalic and citric acids. The observed zeta potential variation as a function of the proportional reagent additive was found to exhibit inverse hyperbolic sine-type behavior predicted to arise from monolayer adsorption following the Grahame-Langmuir model. Through parameter optimization by inverse problem solving, the zeta potential shift with relative adsorbate addition revealed a nearly linear correlation of a defined surface-area-dependent parameter with the conventionally measured surface area values of the powders, demonstrating that the proposed analytical framework is applicable for the in situ surface area characterization of aqueous particulate matter. The investigated methods have advantages over some conventional surface analysis techniques owing to their direct applicability in aqueous environments at ambient temperature and the ability to modify analysis scales by variation of the adsorption cross section.
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Affiliation(s)
- Dorian A H Hanaor
- School of Civil Engineering and ‡Faculty of Pharmacy, University of Sydney , Sydney, NSW 2006, Australia
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Ghadiri M, Chrzanowski W, Rohanizadeh R. Antibiotic eluting clay mineral (Laponite®) for wound healing application: an in vitro study. J Mater Sci Mater Med 2014; 25:2513-2526. [PMID: 25027303 DOI: 10.1007/s10856-014-5272-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Accepted: 07/03/2014] [Indexed: 06/03/2023]
Abstract
Different materials in form of sponge, hydrogel and film have been developed and formulated for treating and dressing burn wounds. In this study, the potential of Laponite, a gel forming clay, in combination with an antimicrobial agent (mafenide), as a wound dressing material was tested in vitro. Laponite/mafenide (Lap/Maf) hydrogel was formulated in three different ratios of Lap/Maf 1:1, 1:2, 1:3. Laponite/mafenide/alginate (Lap/Maf/Alg) film was also formulated by combining Lap/Maf gel (1:1) with alginate. Intercalation rate of mafenide into the layers of Laponite nanoparticles and physico-chemical properties, including wound dressing characteristics of materials were studied using various analytical methods. Furthermore, the degradation of materials and the release profile of mafenide were investigated in simulated wound exudates fluid and antibacterial effectiveness of the eluted mafenide was tested on a range of bacterial species. The cytotoxicity of materials was also evaluated in skin fibroblast culture. The results showed that mafenide molecules were intercalated between the nano-sized layers of Laponite. The eluted mafenide showed active antibacterial effects against all three tested bacteria. All intercalated mafenide released from Lap/Maf 1:1 and 1:2 gel formulations and nearly 80% release from 1:3 formulation during test period. No significant difference was observed in release profile of mafenide between Lap/Maf/Alg film and Lap/Maf formulations. Wound dressing tests on Lap/Maf/Alg film showed it is a breathable dressing and has capacity to absorb wound exudates. The study showed that prepared Lap/Maf composite has the potential to be used as an antibiotic eluting gel or film for wound healing application. Additionally, Laponite has shown benefits in wound healing processes by releasing Mg(2+) ions and thereby reducing the cytotoxic effect of mafenide on fibroblast cells.
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Affiliation(s)
- M Ghadiri
- Faculty of Pharmacy (A15), University of Sydney, Sydney, NSW, 2006, Australia
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Abstract
Myelitis and optic neuritis are prototypic clinical presentations of both multiple sclerosis and neuromyelitis optica. Once considered a subtype of multiple sclerosis, neuromyelitis optica, is now known to have a discrete pathogenesis in which antibodies to the water channel, aquaporin 4, play a critical role. Timely differentiation of neuromyelitis optica from MS is imperative, determining both prognosis and treatment strategy. Early, aggressive immunosuppression is required to prevent the accrual of severe disability in neuromyelitis optica; conversely, MS-specific therapies may exacerbate the disease. The diagnosis of neuromyelitis optica requires the integration of clinical, MR imaging, and laboratory data, but current criteria are insensitive and exclude patients with limited clinical syndromes. Failure to recognize the expanding spectrum of cerebral MR imaging patterns associated with aquaporin 4 antibody seropositivity adds to diagnostic uncertainty in some patients. We present the state of the art in conventional and nonconventional MR imaging in neuromyelitis optica and review the place of neuroimaging in the diagnosis, management, and research of the condition.
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Affiliation(s)
- Y Barnett
- From the Sydney Neuroimaging Analysis Centre (Y.B., M.H.B.), Sydney, AustraliaBrain and Mind Research Institute (Y.B., M.G., L.M., M.H.B.), University of Sydney, Sydney, AustraliaDepartment of Medical Imaging and Neurology (Y.B., I.J.S.), St Vincent's Hospital, Sydney, Australia
| | - I J Sutton
- Department of Medical Imaging and Neurology (Y.B., I.J.S.), St Vincent's Hospital, Sydney, Australia
| | - M Ghadiri
- Brain and Mind Research Institute (Y.B., M.G., L.M., M.H.B.), University of Sydney, Sydney, Australia
| | - L Masters
- Brain and Mind Research Institute (Y.B., M.G., L.M., M.H.B.), University of Sydney, Sydney, Australia
| | - R Zivadinov
- Buffalo Neuroimaging Analysis Center (R.Z.), Department of Neurology, University of Buffalo, Buffalo, New York
| | - M H Barnett
- From the Sydney Neuroimaging Analysis Centre (Y.B., M.H.B.), Sydney, AustraliaBrain and Mind Research Institute (Y.B., M.G., L.M., M.H.B.), University of Sydney, Sydney, Australia
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Abstract
Laponite holds amino acid between its interlayer spaces and releases it in contact with wound fluid through ionic exchange process.
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Affiliation(s)
- M. Ghadiri
- Faculty of Pharmacy
- University of Sydney
- Sydney, Australia
| | - W. Chrzanowski
- Faculty of Pharmacy
- University of Sydney
- Sydney, Australia
| | - W. H. Lee
- Respiratory Technology
- Woolcock Institute of Medical Research
- NSW 2006, Australia
| | - R. Rohanizadeh
- Faculty of Pharmacy
- University of Sydney
- Sydney, Australia
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Shahbazi Niaz M, Traini D, Young PM, Ghadiri M, Rohanizadeh R. Investigation into physical–chemical variables affecting the manufacture and dissolution of wet-milled clarithromycin nanoparticles. Pharm Dev Technol 2013; 19:911-21. [DOI: 10.3109/10837450.2013.840844] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Karimi Feiz Abadi H, Yusof R, Maryam Eshrati S, Naghib SD, Rahmani M, Ghadiri M, Akbari E, Ahmadi MT. Current–voltage modeling of graphene-based DNA sensor. Neural Comput Appl 2013. [DOI: 10.1007/s00521-013-1464-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Ghadiri M, Ghasemi Darehnaei M, Sabbaghian S, Shirazian S. Computational Simulation for Transport of Priority Organic Pollutants through Nanoporous Membranes. Chem Eng Technol 2013. [DOI: 10.1002/ceat.201200513] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Lee WH, Loo CY, Zavgorodniy AV, Ghadiri M, Rohanizadeh R. A novel approach to enhance protein adsorption and cell proliferation on hydroxyapatite: citric acid treatment. RSC Adv 2013. [DOI: 10.1039/c3ra22966a] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Olusanmi D, Roberts K, Ghadiri M, Ding Y. The breakage behaviour of Aspirin under quasi-static indentation and single particle impact loading: Effect of crystallographic anisotropy. Int J Pharm 2011; 411:49-63. [DOI: 10.1016/j.ijpharm.2011.03.039] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2011] [Accepted: 03/18/2011] [Indexed: 10/18/2022]
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Khatamian M, Khandar A, Haghighi M, Ghadiri M, Darbandi M. Synthesis, characterization and acidic properties of nanopowder ZSM-5 type ferrisilicates in the Na+/K+ alkali system. POWDER TECHNOL 2010. [DOI: 10.1016/j.powtec.2010.06.012] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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