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Allegritti E, Giansanti L, Bordon G, Maggi MA, Luciani P, Aleandri S. Unlocking new dimensions in long-acting injectables using lipid mesophase-based beads. J Colloid Interface Sci 2024; 664:1031-1041. [PMID: 38521004 DOI: 10.1016/j.jcis.2024.03.067] [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] [Revised: 03/04/2024] [Accepted: 03/10/2024] [Indexed: 03/25/2024]
Abstract
In this study, we explored the use of lipid mesophases (LMPs) as a biocompatible and biodegradable material for sustained drug delivery. Our hypothesis centered on leveraging the high surface-to-volume ratio of LMP-based beads to enhance strength, stability, and surface interaction compared to the LMP bulk gel. To modulate drug release, we introduced antioxidant vitamin E into the beads, influencing mesophase topologies and controlling drug diffusion coefficients. Four drugs with distinct chemical properties and intended for three different pathologies and administration routes were successfully loaded into the beads with a drug entrapment efficiency exceeding 80 %. Notably, our findings revealed sustained drug release, irrespective of the drugs' chemical properties, culminating in the development of an injectable formulation. This formulation allows direct administration into the target site, minimizing systemic exposure, and thereby mitigating adverse effects. Our approach demonstrates the potential of LMP-based beads for tailored drug delivery systems with broad applications in diverse therapeutic scenarios.
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Affiliation(s)
- Elena Allegritti
- Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell'Aquila, 67100 Coppito, L'Aquila, Italy
| | - Luisa Giansanti
- Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell'Aquila, 67100 Coppito, L'Aquila, Italy
| | - Gregor Bordon
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, 3012 Bern, Switzerland
| | | | - Paola Luciani
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, 3012 Bern, Switzerland.
| | - Simone Aleandri
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, 3012 Bern, Switzerland.
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Allegritti E, Battista S, Maggi MA, Marconi C, Galantini L, Giansanti L. Novel liposomal formulations for protection and delivery of levodopa: Structure-properties correlation. Int J Pharm 2023; 643:123230. [PMID: 37454830 DOI: 10.1016/j.ijpharm.2023.123230] [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: 04/21/2023] [Revised: 07/11/2023] [Accepted: 07/13/2023] [Indexed: 07/18/2023]
Abstract
Liposomes are promising drug carriers for a wide range of central nervous system disorders, such as Parkinson's disease (PD), since they can protect active substances from degradation and could be administered intranasally, ensuring a direct access to the brain. Levodopa (LD), the drug commonly used to treat PD, spontaneously oxidizes in aqueous solutions and thus needs to be stabilized. Our investigation focuses on the preparation and the physico-chemical characterization of mixed liposomes to vehiculate LD and two natural substances (L-ascorbic acid and quercetin) that can prevent its oxidation and contribute to the treatment of Parkinson's disease. These co-loaded vesicles were prepared using a saturated phospholipid and structurally related cationic or analogue N-oxide surfactants and showed different properties, based on their composition. In particular, ex-vivo permeability tests using porcine nasal mucosa were performed, denoting that subtle variations of the lipids structure can significantly affect the delivery of LD to the target site.
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Affiliation(s)
- Elena Allegritti
- Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell'Aquila, Via Vetoio, 67010 Coppito, AQ, Italy
| | - Sara Battista
- Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell'Aquila, Via Vetoio, 67010 Coppito, AQ, Italy
| | - Maria Anna Maggi
- Hortus Novus, Via Campo Sportivo 2, Canistro, 67051 L'Aquila, Italy
| | - Claudia Marconi
- Dipartimento di Chimica, Università di Roma "Sapienza", Piazzale Aldo Moro 5, 00185 Roma, Italy
| | - Luciano Galantini
- Dipartimento di Chimica, Università di Roma "Sapienza", Piazzale Aldo Moro 5, 00185 Roma, Italy
| | - Luisa Giansanti
- Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell'Aquila, Via Vetoio, 67010 Coppito, AQ, Italy.
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Casacchia ME, Giorgianna G, Allegritti E, Giansanti L, Carlone A, Pesciaioli F. Organocatalytic synthesis of γ-amino acids precursors via masked acetaldehyde under micellar catalysis. SynOpen 2022. [DOI: 10.1055/a-1996-8940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The development of micellar catalysis offers a sustainable alternative to organic solvents representing an environmental milestone in organic synthesis. Here the first Michael addition of masked acetaldehyde under neutral, cationic and anionic micellar catalysis is reported, affording the products in high yields and enantiomeric excess in spite the use of water as solvent.
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Affiliation(s)
- Maria Edith Casacchia
- Department of Physical and Chemical Sciences, Università degli Studi dell'Aquila, L'Aquila, Italy
| | - Giuliana Giorgianna
- Department of Physical and Chemical Sciences, Università degli Studi dell'Aquila, L'Aquila, Italy
| | - Elena Allegritti
- Department of Physical and Chemical Sciences, Università degli Studi dell'Aquila, L'Aquila, Italy
| | - Luisa Giansanti
- Department of Physical and Chemical Sciences, Università degli Studi dell'Aquila, L'Aquila, Italy
| | - Armando Carlone
- Department of Physical and Chemical Sciences, Università degli Studi dell'Aquila, L'Aquila, Italy
| | - Fabio Pesciaioli
- Department of Physical and Chemical Sciences, Università degli Studi dell'Aquila, L'Aquila, Italy
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Battista S, Bellio P, Fagnani L, Allegritti E, Nazzicone L, Galantini L, Celenza G, Giansanti L. Structurally Related Liposomes Containing N-Oxide Surfactants: Physicochemical Properties and Evaluation of Antimicrobial Activity in Combination with Therapeutically Available Antibiotics. Mol Pharm 2022; 19:788-797. [PMID: 35170971 PMCID: PMC8905576 DOI: 10.1021/acs.molpharmaceut.1c00609] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 12/19/2022]
Abstract
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Although liposomes
are largely investigated as drug delivery systems,
they can also exert a pharmacological activity if devoid of an active
principle as a function of their composition. Specifically, charged
liposomes can electrostatically interact with bacterial cells and,
in some cases, induce bacterial cell death. Moreover, they also show
a high affinity toward bacterial biofilms. We investigated the physicochemical
and antimicrobial properties of liposomes formulated with a natural
phospholipid and four synthetic l-prolinol-derived surfactants
at 9/1 and 8/2 molar ratios. The synthetic components differ in the
nature of the polar headgroup (quaternary ammonium salt or N-oxide) and/or the length of the alkyl chain (14 or 16
methylenes). These differences allowed us to investigate the effect
of the molecular structure of liposome components on the properties
of the aggregates and their ability to interact with bacterial cells.
The antimicrobial properties of the different formulations were assessed
against Gram-negative and Gram-positive bacteria and fungi. Drug–drug
interactions with four classes of available clinical antibiotics were
evaluated against Staphylococcus spp. The target
of each class of antibiotics plays a pivotal role in exerting a synergistic
effect. Our results highlight that the liposomal formulations with
an N-oxide moiety are required for the antibacterial
activity against Gram-positive bacteria. In particular, we observed
a synergism between oxacillin and liposomes containing 20 molar percentage
of N-oxide surfactants onStaphylococcus
haemolyticus, Staphylococcus epidermidis, andStaphylococcus aureus. In the
case of liposomes containing 20 molar percentage of the N-oxide surfactant with 14 carbon atoms in the alkyl chain for S. epidermidis, the minimum inhibitory concentration
was 0.125 μg/mL, well below the breakpoint value of the antibiotic.
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Affiliation(s)
- Sara Battista
- Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell'Aquila, Via Vetoio 10, 67010 Coppito, AQ, Italy
| | - Pierangelo Bellio
- Dipartimento di Scienze Chimiche Applicate e Biotecnologie, Università degli Studi dell'Aquila, Via Vetoio 10, 67010 Coppito, AQ, Italy
| | - Lorenza Fagnani
- Dipartimento di Scienze Chimiche Applicate e Biotecnologie, Università degli Studi dell'Aquila, Via Vetoio 10, 67010 Coppito, AQ, Italy
| | - Elena Allegritti
- Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell'Aquila, Via Vetoio 10, 67010 Coppito, AQ, Italy
| | - Lisaurora Nazzicone
- Dipartimento di Scienze Chimiche Applicate e Biotecnologie, Università degli Studi dell'Aquila, Via Vetoio 10, 67010 Coppito, AQ, Italy
| | - Luciano Galantini
- Dipartimento di Chimica, Università degli Studi di Roma "Sapienza", P.le A. Moro 5, 00185 Roma, Italy
| | - Giuseppe Celenza
- Dipartimento di Scienze Chimiche Applicate e Biotecnologie, Università degli Studi dell'Aquila, Via Vetoio 10, 67010 Coppito, AQ, Italy
| | - Luisa Giansanti
- Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell'Aquila, Via Vetoio 10, 67010 Coppito, AQ, Italy
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Bottino N, Chiaravalli L, Panigada M, Carrieri F, Allegritti E, Pelosi P, Gattinoni L. In vitro study of a new vaporization humidifying device: DAR HC 2000®. Crit Care 2000. [PMCID: PMC3333031 DOI: 10.1186/cc827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Chiara O, Segala M, Volpi D, b1rconi MG, Trivella M, Bordoli M, Alabiso F, Vercesi P, Allegritti E, Fuertes Guiro F, Lantieri I, Grignani S, Tiberio G. [Hypertonic saline solutions in resuscitation in hemorrhagic shock. An experimental study]. MINERVA CHIR 1997; 52:753-62. [PMID: 9324658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The aim of the study was to evaluate the use of hypertonic solutions in restoring intravascular volume in a model of hemorrhagic shock. Eighteen pigs underwent general anesthesia and were instrumented with a carotid catheter to record mean arterial pressure (MAP), a pulmonary artery catheter for pulmonary arterial pressure (MPAP) and cardiac output (CO) monitoring and an electromagnetic flowmeter around the abdominal supraceliac aorta for aortic flow measurement (Vaor). Oxygen delivery (DO2) and oxygen consumption (VO2) data were calculated by standard formulas. The animals were hemorrhaged to a MAP of 45 mmHg, held for 1 hour. They were resuscitated during the following hour until the aortic flow regained its basal value, using three different solutions: normotonic saline (NS = NaCl 0.9%), hypertonic saline (HS = NaCl 7.5%), hypertonic saline added with dextran (HSDX = NaCl 7.5% + 6% dextran 70). An hour of autologous blood transfusion and a two hours follow-up concluded the experiment. Volumes infused were remarkably lower administering HS (13.70 +/- 1.44 ml/kg) and HSDX (9.11 +/- 1.20 ml/kg) compared to NS (90.32 +/- 24.83 ml/kg). MAP, CO and DO2 values resulted significantly higher in the HSDX animals, with lower MPAP levels. During the two hours follow-up only the animals reinfused with HSDX maintained hemodynamic and oxygen transport values at normal levels. We conclude that the administration of hypertonic saline solutions during hemorrhagic shock allows the saving of infusion volumes, thus diminishing the occurrence of interstitial edema formation. The adding of dextran to the solution prolongs the hemodynamic effects.
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Affiliation(s)
- O Chiara
- Istituto di Chirurgia d'Urgenza, IRCCS Ospedale Maggiore di Milano, Università degli Studi, Milano
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