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Rouabah M, Bourgeois S, Briançon S, Cogné C. A numerical tool to predict powder behaviour for pharmaceutical handling and processing. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Salústio PJ, Monteiro MF, Nunes T, Sousa E Silva JP, Costa PJ. Starch flow behavior alone and under different glidants action using the shear cell method. Drug Dev Ind Pharm 2021; 47:1502-1511. [PMID: 34758690 DOI: 10.1080/03639045.2021.2004158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The objective of this work was to analyze the flow behavior of a commonly used filler (pregelatinised starch) and the effect of two of the most used lubricants (talc and colloidal silicon dioxide). The studies were carried out according to the conventional methods (Angle of Repose, Bulk and Tapped densities and from these the Compressibility Index) and shear cell methods (Brookfield Powder Flow Tester apparatus) described in European Pharmacopeia (Ph. Eur.). The results showed some surprising and unexpected values for the flow behavior of this filler under influence of the methods and the used glidants. Regarding pure starch and mixtures containing talc, the flow behavior was similar between them and the Flow Index (ffc) values varied between 1.8 and 4 (very cohesive and cohesive) as consolidation stress (σ1) increased. In this case, the glidant effect was not observed. However, for the mixtures of starch with colloidal silicon dioxide this effect was observed providing Flow Index (ffc) values between 2.6 and 8.9 (cohesive and easy-flowing) as consolidation stress (σ1) increased. Other parameters that are also used to characterize flow properties, more specifically, within silos, chutes and hoppers, such as effective angle of internal friction (φe), effective angle of wall friction (φx), critical arching and critical rathole values, provided similar information. Based in the obtained results from all tests it can be said that the talc did not induce improvement on the starch flow behavior in the used conditions in opposition to the effect produced by colloidal silicon dioxide.HighlightsExample 1. A good flowability of powders is needed in order to be compressed/filled;Example 2. The overcome the poor flow it is usual to use glidants;Example 3. CSD improved the pregelatinised starch (Starch 1500®) flow;Example 4. Talc do not have relevant effect in the pregelatinised starch (Starch 1500®) flow;Example 5. Powder FlowTester method showed more complete and consistent results.
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Affiliation(s)
- Paulo J Salústio
- Research Institute for Medicines and Pharmaceutical Sciences (iMed.UL), Faculty of Pharmacy, University of Lisbon, Lisbon, Portugal
| | - Maria F Monteiro
- Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Telmo Nunes
- Faculty of Sciences, University of Lisbon, Lisbon, Portugal
| | - José P Sousa E Silva
- UCIBIO, REQUIMTE, MedTech - Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Paulo J Costa
- UCIBIO, REQUIMTE, MedTech - Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal
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Saafan HA, Ibrahim KM, Thabet Y, Elbeltagy SM, Eissa RA, Ghaleb AH, Ibrahim F, Elsabahy M, Eissa NG. Intratracheal Administration of Chloroquine-Loaded Niosomes Minimize Systemic Drug Exposure. Pharmaceutics 2021; 13:1677. [PMID: 34683971 PMCID: PMC8539513 DOI: 10.3390/pharmaceutics13101677] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 09/28/2021] [Accepted: 10/08/2021] [Indexed: 12/14/2022] Open
Abstract
Pulmonary administration provides a useful alternative to oral and invasive routes of administration while enhancing and prolonging the accumulation of drugs into the lungs and reducing systemic drug exposure. In this study, chloroquine, as a model drug, was loaded into niosomes for potential pulmonary administration either via dry powder inhalation or intratracheally. Chloroquine-loaded niosomes have been prepared and extensively characterized. Furthermore, drug-loaded niosomes were lyophilized and their flowing properties were evaluated by measuring the angle of repose, Carr's index, and Hausner ratio. The developed niosomes demonstrated a nanosized (100-150 nm) spherical morphology and chloroquine entrapment efficiency of ca. 24.5%. The FT-IR results indicated the incorporation of chloroquine into the niosomes, whereas in vitro release studies demonstrated an extended-release profile of the drug-loaded niosomes compared to the free drug. Lyophilized niosomes exhibited poor flowability that was not sufficiently improved after the addition of lactose or when cryoprotectants were exploited throughout the lyophilization process. In vivo, intratracheal administration of chloroquine-loaded niosomes in rats resulted in a drug concentration in the blood that was 10-fold lower than the oral administration of the free drug. Biomarkers of kidney and liver functions (i.e., creatinine, urea, AST, and ALT) following pulmonary administration of the drug-loaded nanoparticles were of similar levels to those of the control untreated animals. Hence, the use of a dry powder inhaler for administration of lyophilized niosomes is not recommended, whereas intratracheal administration might provide a promising strategy for pulmonary administration of niosomal dispersions while minimizing systemic drug exposure and adverse reactions.
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Affiliation(s)
- Hesham A. Saafan
- School of Biotechnology, Badr University in Cairo, Cairo 11829, Egypt; (H.A.S.); (K.M.I.); (Y.T.); (S.M.E.); (R.A.E.)
| | - Kamilia M. Ibrahim
- School of Biotechnology, Badr University in Cairo, Cairo 11829, Egypt; (H.A.S.); (K.M.I.); (Y.T.); (S.M.E.); (R.A.E.)
| | - Yasmeena Thabet
- School of Biotechnology, Badr University in Cairo, Cairo 11829, Egypt; (H.A.S.); (K.M.I.); (Y.T.); (S.M.E.); (R.A.E.)
- Department of Biomedical Sciences, Florida State University College of Medicine, Tallahassee, FL 32304, USA
| | - Sara M. Elbeltagy
- School of Biotechnology, Badr University in Cairo, Cairo 11829, Egypt; (H.A.S.); (K.M.I.); (Y.T.); (S.M.E.); (R.A.E.)
| | - Rana A. Eissa
- School of Biotechnology, Badr University in Cairo, Cairo 11829, Egypt; (H.A.S.); (K.M.I.); (Y.T.); (S.M.E.); (R.A.E.)
| | - Ashraf H. Ghaleb
- Galala University, Galala, Suez 43527, Egypt;
- Department of Surgery, Faculty of Medicine, Cairo University, Cairo 12613, Egypt
| | - Fathy Ibrahim
- International Center for Bioavailability, Pharmaceutical and Clinical Research, Obour City 11828, Egypt;
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Al-Azhar University, Cairo 11651, Egypt
| | - Mahmoud Elsabahy
- School of Biotechnology, Badr University in Cairo, Cairo 11829, Egypt; (H.A.S.); (K.M.I.); (Y.T.); (S.M.E.); (R.A.E.)
| | - Noura G. Eissa
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt;
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Influence of the Glidant on Diluent Flow Characterization Using Shear Cell Method. J Pharm Innov 2020. [DOI: 10.1007/s12247-020-09478-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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