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Aina M, Baillon F, Sescousse R, Sanchez-Ballester NM, Begu S, Soulairol I, Sauceau M. Assessing texturometer-derived rheological data for predicting the printability of gummy formulations in SSE 3D printing. Int J Pharm 2024; 662:124471. [PMID: 39019295 DOI: 10.1016/j.ijpharm.2024.124471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2024] [Revised: 07/10/2024] [Accepted: 07/11/2024] [Indexed: 07/19/2024]
Abstract
Semi-solid extrusion (SSE), an additive manufacturing technique, is gaining significant attention for the printing of thermosensitive drugs. Hydrogels, one of the materials used in SSE, have emerged as a focus in pharmaceutical applications due to their ability to control the release of therapeutic agents spatially and temporally. Understanding the non-Newtonian flow and evaluating the mechanical properties of hydrogel-based materials during extrusion is, however, essential for successful 3D printing. Thus, users often find themselves conducting both rheological and texture profile analyses to characterize the hydrogel. While texturometers are primarily used to evaluate mechanical or sensory properties, viscosity measurements are typically performed using rotational rheometers or viscometers. In this study, we demonstrated how comparable rheological information can be obtained using a texturometer as a capillary rheometer. By preparing similar formulations to a previous study, we compared the rheological data obtained from a rotational rheometer to the data obtained from the texturometer. The means of the parameters obtained by fitting the data from both techniques to the power law model showed insignificant differences. In addition, three clusters were formed based on the flow behaviour and printability of the samples using principal component analysis. Furthermore, the printability was predicted using the samples' consistency and flow indexes, and the regression coefficient was 96.62 and 60.03% for capillary and rotational flow parameters, respectively. This approach thus holds the potential to streamline the time, expertise and equipment required for the rheological characterization of hydrogels for applications in semi-solid extrusion.
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Affiliation(s)
- Morenikeji Aina
- RAPSODEE, IMT Mines Albi, CNRS, University of Toulouse, 81013 Albi, France.
| | - Fabien Baillon
- RAPSODEE, IMT Mines Albi, CNRS, University of Toulouse, 81013 Albi, France
| | - Romain Sescousse
- RAPSODEE, IMT Mines Albi, CNRS, University of Toulouse, 81013 Albi, France
| | - Noelia M Sanchez-Ballester
- ICGM, University of Montpellier, CNRS, ENSCM, Montpellier, France; Department of Pharmacy, Nîmes University Hospital, Nîmes, France
| | - Sylvie Begu
- ICGM, University of Montpellier, CNRS, ENSCM, Montpellier, France
| | - Ian Soulairol
- ICGM, University of Montpellier, CNRS, ENSCM, Montpellier, France; Department of Pharmacy, Nîmes University Hospital, Nîmes, France
| | - Martial Sauceau
- RAPSODEE, IMT Mines Albi, CNRS, University of Toulouse, 81013 Albi, France
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Hausberger A, Pecora M, Favier D, Rossegger E, Tockner M, Ules T, Haselmann M, Schlögl S, Gauthier C. In Situ Observation of Micro-Patterned Elastomeric Surfaces: The Formation of the Area of Real Contact and the Influence on Its Friction and Deformation Behaviour. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6489. [PMID: 37834628 PMCID: PMC10573622 DOI: 10.3390/ma16196489] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 09/22/2023] [Accepted: 09/26/2023] [Indexed: 10/15/2023]
Abstract
Structured surfaces, which are the basis of the lotus blossom effect, have great potential to serve/operate as functionalised surfaces, i.e., surfaces with specific and/or adjustable properties. In the present study, the aim is to use micro-structured elastomeric surfaces to specifically influence the friction and deformation behaviours on the basis of the shape and arrangement of the structures. Thiol-acrylate-based photopolymers patterned via nanoimprint lithography were investigated by using an in situ tribological measurement set-up. A clear influence of the different structures on the surface's friction behaviour could be shown, and, furthermore, this could be brought into relation with the real area of contact. This finding provides an important contribution to further development steps, namely, to give the structures switchable properties in order to enable the control of friction properties in a targeted manner.
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Affiliation(s)
- Andreas Hausberger
- Polymer Competence Center Leoben GmbH, Sauraugasse 1, 8700 Leoben, Austria; (E.R.); (M.T.); (T.U.); (M.H.); (S.S.)
| | - Marina Pecora
- Institut Charles Sadron, Université de Strasbourg, CNRS, F-67000 Strasbourg, France; (M.P.); (D.F.); (C.G.)
| | - Damien Favier
- Institut Charles Sadron, Université de Strasbourg, CNRS, F-67000 Strasbourg, France; (M.P.); (D.F.); (C.G.)
| | - Elisabeth Rossegger
- Polymer Competence Center Leoben GmbH, Sauraugasse 1, 8700 Leoben, Austria; (E.R.); (M.T.); (T.U.); (M.H.); (S.S.)
| | - Martin Tockner
- Polymer Competence Center Leoben GmbH, Sauraugasse 1, 8700 Leoben, Austria; (E.R.); (M.T.); (T.U.); (M.H.); (S.S.)
| | - Thomas Ules
- Polymer Competence Center Leoben GmbH, Sauraugasse 1, 8700 Leoben, Austria; (E.R.); (M.T.); (T.U.); (M.H.); (S.S.)
| | - Matthias Haselmann
- Polymer Competence Center Leoben GmbH, Sauraugasse 1, 8700 Leoben, Austria; (E.R.); (M.T.); (T.U.); (M.H.); (S.S.)
| | - Sandra Schlögl
- Polymer Competence Center Leoben GmbH, Sauraugasse 1, 8700 Leoben, Austria; (E.R.); (M.T.); (T.U.); (M.H.); (S.S.)
| | - Christian Gauthier
- Institut Charles Sadron, Université de Strasbourg, CNRS, F-67000 Strasbourg, France; (M.P.); (D.F.); (C.G.)
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Evangelista I, Wencel D, Beguin S, Zhang N, Gilchrist MD. Influence of Surface Texturing on the Dry Tribological Properties of Polymers in Medical Devices. Polymers (Basel) 2023; 15:2858. [PMID: 37447503 DOI: 10.3390/polym15132858] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 06/25/2023] [Accepted: 06/25/2023] [Indexed: 07/15/2023] Open
Abstract
There is a constant need to improve patient comfort and product performance associated with the use of medical devices. Efforts to optimise the tribological characteristics of medical devices usually involve modifying existing devices without compromising their main design features and functionality. This article constitutes a state-of-the-art review of the influence of dry friction on polymeric components used in medical devices, including those having microscale surface features. Surface tribology and contact interactions are discussed, along with alternative forms of surface texturing. Evident gaps in the literature, and areas warranting future research are highlighted; these include friction involving polymer Vs polymer surfaces, information regarding which topologies and feature spacings provide the best performing textured surfaces, and design guidelines that would assist manufacturers to minimise or maximise friction under non-lubricated conditions.
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Affiliation(s)
- Isabela Evangelista
- School of Mechanical & Materials Engineering, University College Dublin, Belfield, D04 V1W8 Dublin, Ireland
- BD (Becton, Dickinson & Company), Blackrock Business Park, Carysfort Avenue, Blackrock, A94 H2X4 Dublin, Ireland
| | - Dorota Wencel
- BD (Becton, Dickinson & Company), Blackrock Business Park, Carysfort Avenue, Blackrock, A94 H2X4 Dublin, Ireland
| | - Steve Beguin
- BD (Becton, Dickinson & Company), Blackrock Business Park, Carysfort Avenue, Blackrock, A94 H2X4 Dublin, Ireland
| | - Nan Zhang
- School of Mechanical & Materials Engineering, University College Dublin, Belfield, D04 V1W8 Dublin, Ireland
| | - Michael D Gilchrist
- School of Mechanical & Materials Engineering, University College Dublin, Belfield, D04 V1W8 Dublin, Ireland
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Su B, Ye J, Zou X, Huang L, Wang X. Effect of bionic hexagonal texture on squeezing films inside soft contacts with high adhesion and high friction. SOFT MATTER 2023. [PMID: 37314179 DOI: 10.1039/d3sm00154g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
To understand the mechanisms of high friction and high adhesion in bioinspired textured surfaces under wet conditions, the evolution behavior of squeezing films across lubricated interfaces is experimentally investigated using optical interferometry. The results show that the splitting of the continuous large-scaled liquid film into numerous isolated micro zones is an important function of the hexagonal texture. Both the orientation and the size of the hexagonal texture have noticeable effects on the drainage rate: either downscaling the hexagonal texture or orienting the texture with two sides of each micro-hexagon parallel to the inclining direction could accelerate the draining process. While the draining process is completed, residual micro-droplets turn out to be entrapped within the contact regions of single hexagonal micro-pillars. The entrapped micro-droplets gradually shrink as the hexagonal texture downsizes. Moreover, a novel geometrical shape for the micro-pillared texture is proposed to improve the drainage efficiency.
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Affiliation(s)
- Binbin Su
- Jiangxi province key laboratory of maglev technology, Jiangxi University of Science and Technology, Ganzhou 341000, People's Republic of China
- School of Electrical Engineering and Automation, Jiangxi University of Science and Technology, Ganzhou 341000, People's Republic of China
| | - Jianhe Ye
- Jiangxi province key laboratory of maglev technology, Jiangxi University of Science and Technology, Ganzhou 341000, People's Republic of China
- School of Electrical Engineering and Automation, Jiangxi University of Science and Technology, Ganzhou 341000, People's Republic of China
| | - Xianghe Zou
- School of Electrical Engineering and Automation, Jiangxi University of Science and Technology, Ganzhou 341000, People's Republic of China
| | - Lirong Huang
- School of mechanical and electrical engineering, Jiangxi University of Science and Technology, Ganzhou 341000, People's Republic of China
| | - Xiaolei Wang
- College of Mechanical & Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, People's Republic of China.
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Krisdiyanto, Bin Raja Ghazilla RA, Azuddin M, Bin Ahmad Hairuddin MKF, Muflikhun MA, Risdiana N, Afifuddin E. The hypodermic syringe performance based on the ISO 7886-1:2017: A narrative review. Medicine (Baltimore) 2022; 101:e31812. [PMID: 36626504 PMCID: PMC9750608 DOI: 10.1097/md.0000000000031812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
A syringe is used to inject fluid or medicine into the patient's soft tissue. The main components of the syringe were the needle, barrel, and plunger. The use of syringes in the medical world is relatively high, and especially since the COVID-19 pandemic, the use of hypodermic syringes increased sharply due to vaccination. The syringe used must be effective and of good quality, so the International Organization for Standardization (ISO) has published test procedures and minimum specifications for hypodermic syringes. The performance of the syringe can be observed from the dead space, force piston operation, water and air leakage, and fitting position of the plunger in the barrel. This review shows that most researchers use the weighing method to measure the dead space, although some use other methods. The researchers found that most of the products met the minimum specifications of the ISO, and that the dimensions and shape of the syringe affected the dead space. Researchers have not examined other performance measures recommended by the ISO. Researchers have focused more on force injection than force piston operation, leakage after injection or back spray than air and water leakage, and reduction the friction of the plunger without considering the fitting position of the plunger in the barrel.
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Affiliation(s)
- Krisdiyanto
- CPDM, Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
- Mechanical Engineering Department, Faculty of Engineering, Universitas Muhammadiyah Yogyakarta, Yogyakarta, Indonesia
| | | | - M. Azuddin
- CPDM, Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
| | | | - Muhammad Akhsin Muflikhun
- Mechanical and Industrial Engineering Department, Faculty of Engineering, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Nurvita Risdiana
- Department of Mental Health Nursing, School of Nursing, Universitas Muhammadiyah Yogyakarta, Yogyakarta, Indonesia
| | - Eki Afifuddin
- Mechanical and Industrial Engineering Department, Faculty of Engineering, Universitas Gadjah Mada, Yogyakarta, Indonesia
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Abu-Much A, Darawshi R, Dawud H, Kasem H, Abu Ammar A. Preparation and characterization of flexible furosemide-loaded biodegradable microneedles for intradermal drug delivery. Biomater Sci 2022; 10:6486-6499. [PMID: 36178014 DOI: 10.1039/d2bm01143c] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transdermal drug delivery systems are a useful and minimally invasive alternative to other drug administration routes. Biodegradable polymeric microneedles (MNs) are widely used in controlled-release drug delivery due to their tunable properties and ease of patient self-administration. Polylactic-co-glycolic acid (PLGA) is often used for sustained drug release owing to special intrinsic properties including biocompatibility and biodegradability, which offer excellent applicability in preparing MNs. Congestive heart failure (CHF) is characterized by fluid overload during acute exacerbation, necessitating frequent patient hospitalization for continuous intravenous (i.v.) diuretic therapy. In the present study, we incorporated furosemide (FUR) as a model drug into flexible PLGA MN skin patches for potential intradermal delivery to overcome the limitations associated with i.v. diuresis. The MNs were fabricated by a casting-mold technique and consisted of two main parts, PLGA needle tips loaded with varying concentrations of FUR and a flexible backing layer comprising sodium alginate and glycerol. MN formulations were characterized by SEM and exhibited a uniform pyramidal shape. The measured surface pH of all samples suggested that no skin irritation is expected upon application. High encapsulation efficiency was obtained for FUR-MN formulations in which a decrease was noted as the FUR/PLGA ratio decreased. Drug loading content ranged from 19.1 ± 1% to 28.9 ± 1.4%. Successful insertion of MNs into a Parafilm® skin simulant model suggested that MNs will easily penetrate the skin's outermost layer, the stratum corneum, and will permit intradermal delivery of FUR. The MNs were further characterized by analytical methods. Finally, the MNs exhibited an initial burst release followed by a sustained release of FUR. Self-administered FUR-MNs can open new avenues to overcome i.v. drip limitations and increase patient compliance.
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Affiliation(s)
- Arsalan Abu-Much
- Leviev Heart Center, Chaim Sheba Medical Center, Tel Hashomer, Ramat Gan, Israel.,Sackler School of Medicine, Tel Aviv University, Tel-Aviv, Israel
| | - Raya Darawshi
- Department of Pharmaceutical Engineering, Azrieli College of Engineering Jerusalem, 26 Yaakov Shreibom Street, Ramat Beit Hakerem, Jerusalem 9103501, Israel.
| | - Hala Dawud
- Department of Pharmaceutical Engineering, Azrieli College of Engineering Jerusalem, 26 Yaakov Shreibom Street, Ramat Beit Hakerem, Jerusalem 9103501, Israel.
| | - Haytam Kasem
- Department of Mechanical Engineering, Azrieli College of Engineering Jerusalem, Jerusalem, Israel
| | - Aiman Abu Ammar
- Department of Pharmaceutical Engineering, Azrieli College of Engineering Jerusalem, 26 Yaakov Shreibom Street, Ramat Beit Hakerem, Jerusalem 9103501, Israel.
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Fujita N, Kinoshita T, Iwao M, Masuda N, Nakanishi Y. Friction control of elastic materials on glass by means of textured surfaces. Sci Rep 2022; 12:15423. [PMID: 36104464 PMCID: PMC9474819 DOI: 10.1038/s41598-022-19338-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 08/29/2022] [Indexed: 11/09/2022] Open
Abstract
AbstractTo investigate the friction behaviors of elastomer and polyacetal writing tips sliding on various textured glass surfaces, the influences of the pitch size and height of sub-millimeter to millimeter sized texture on friction were examined via reciprocating friction tests. The friction coefficients of each writing tip could be systematically varied by changing the pitch and height of the texture. These changes in friction were based on the relationship between the convex-concave shapes and the contact parts of the writing tip, and hence, influence the adhesive, abrasive, and deformation frictions. By inducing a surface texture with a pitch smaller than the contact area of the writing tip, the friction coefficient could be reduced effectively. By inducing a surface texture with a larger height, the friction coefficient of the elastomer could be increased due to deformation friction. These behaviors indicate the possibility of controlling the friction by changing the parameters such as the pitch and height of the textured glass surfaces.
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Cornes P, Gascon P, Vulto AG, Aapro M. Biosimilar Pegfilgrastim: Improving Access and Optimising Practice to Supportive Care that Enables Cure. BioDrugs 2021; 34:255-263. [PMID: 32232676 PMCID: PMC7211191 DOI: 10.1007/s40259-020-00411-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Febrile neutropenia (FN) is a serious complication of chemotherapy, which can cause significant morbidity and mortality, result in dose delays and reductions and, ultimately, reduce cancer survival. Over the past decade, the availability of biosimilar filgrastim (short-acting granulocyte colony-stimulating factor [G-CSF]) has transformed patient access, with clear evidence of clinical benefit at preventing FN at reduced costs. In 2019, seven biosimilar pegfilgrastims (long-acting G-CSFs) were licensed, creating optimal market conditions and choice for prescribers. FN affects up to 117 per 1000 cancer patients, with mortality rates in the range of 2–21%. By reducing FN incidence and improving chemotherapy relative dose intensity (RDI), G-CSF has been associated with a 3.2% absolute survival benefit. Guidelines recommend primary prophylaxis and that filgrastim be administered for 10–14 days, while pegfilgrastim is administered once per cycle. When taken according to the guidelines, pegfilgrastim and filgrastim are equally effective. However, in routine clinical practice, filgrastim is often under-dosed (< 7 days) and has been shown to be inferior to pegfilgrastim at reducing FN incidence, hospitalisations and maintaining RDI. Once-per-cycle administration with pegfilgrastim might also aid patient adherence. The introduction of biosimilar pegfilgrastim should instigate a rethink of neutropenia management. Biosimilar pegfilgrastim offers countries using biosimilar filgrastim opportunities to improve adherence and thus cancer survival, whilst offering economic benefits for countries using reference pegfilgrastim. These benefits can be realised in full if biosimilar pegfilgrastim becomes part of routine clinical practice supported by drug and therapeutic committees implementing guidelines with multidisciplinary support in the hospital.
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Affiliation(s)
| | - Pere Gascon
- Department of Hematology-Oncology, University of Barcelona, Barcelona, Spain
| | - Arnold G Vulto
- Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium
- Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Matti Aapro
- Cancer Center, Clinique de Genolier, Vaud, Switzerland
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