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Martins MAR, Silva LP, Jorge PS, Abranches DO, Pinho SP, Coutinho JAP. The role of ionic vs. non-ionic excipients in APIs-based eutectic systems. Eur J Pharm Sci 2021; 156:105583. [PMID: 33045368 DOI: 10.1016/j.ejps.2020.105583] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 09/03/2020] [Accepted: 10/01/2020] [Indexed: 11/17/2022]
Abstract
Aiming to contribute to drug pre-formulation, new eutectic mixtures were developed. Thymol, coumarin, or quaternary ammonium chlorides as excipients, were combined with the active pharmaceutical ingredients (APIs) acetylsalicylic acid, acetaminophen, ibuprofen, ketoprofen, or lidocaine. Their solid-liquid equilibrium (SLE) binary phase diagrams were measured to study eventual phase separation between the compounds, preventing manufacturing problems, and to study the molecular interactions between the APIs and ionic or non-ionic excipients. The Conductor-like Screening Model for Real Solvents (COSMO-RS) capability to predict the SLE of mixtures containing non-ionic excipients was further evaluated. COSMO-RS gives a good quantitative description of the experimental SLE being a tool with great potential in the screening of eutectic systems containing APIs and non-ionic excipients. While thymol presents strong interactions with the APIs, and consequently negative deviations to thermodynamic ideality, systems containing coumarin follow a quasi-ideal behavior. Regarding the ionic excipients, both choline chloride and the tetraalkylammonium chlorides are unable to establish relevant interactions with the APIs, and no significant negative deviations to ideality are observed. The liquefaction of the APIs here studied is favored by using non-ionic excipients, such as thymol, due to the strong interactions it can establish with the APIs.
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Affiliation(s)
- Mónia A R Martins
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Liliana P Silva
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Patrícia S Jorge
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Dinis O Abranches
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Simão P Pinho
- Mountain Research Center - CIMO, Polytechnic Institute of Bragança, 5301-855 Bragança, Portugal
| | - João A P Coutinho
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
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2
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Aouak T, Saeed WS, Al-Hafi NM, Al-Odayni AB, Alghamdi AA, Bedja I. Poly (2-hydroxyethylmethacrylate - co-methylmethacrylate)/Lignocaine Contact Lens Preparation, Characterization, and in vitro Release Dynamic. Polymers (Basel) 2019; 11:E917. [PMID: 31126165 PMCID: PMC6572039 DOI: 10.3390/polym11050917] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Revised: 05/19/2019] [Accepted: 05/21/2019] [Indexed: 11/18/2022] Open
Abstract
2-hydroxyethyl methacrylate, methylmethacrylate, ethylene glycol dimethyl methacrylate, and lignocaine (drug) were mixed together and the monomers were copolymerized at 60 °C through a free radical polymerization in the presence of α,α'-Azoisobutyronitrile in tetrahydrofuran. A series of copolymer/drug composites with different monoacrylate monomer compositions were prepared by solvent evaporation and characterized by different methods such as nuclear magnetic resonance, differential scanning calorimetry, Fourier transform infrared, X-ray diffraction, and mechanical and optical testing. The water content in the copolymers and the cell viability test on the samples were also examined in this investigation. The results of the analyses of the properties of this drug-carrier system are promising, indicating that this material may be a potential candidate for contact lens applications. The release dynamic of this medication from the prepared drug-carrier systems was investigated in neutral pH media. The results obtained revealed that the diffusion of lignocaine through the copolymer matrix obeys the Fick model and the dynamic release can be easily controlled by the methyl methacrylate content in the copolymer.
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Affiliation(s)
- Taieb Aouak
- Chemistry Department, College of Science, King Saud University, Box 2455, Riyadh 11451, Saudi Arabia.
| | - Wassem Sharaf Saeed
- Chemistry Department, College of Science, King Saud University, Box 2455, Riyadh 11451, Saudi Arabia.
| | - Nawaf M Al-Hafi
- Cornea Research Chair, Department of Optometry, College of Applied Medical Sciences, King Saud University, Riyadh 11433, Saudi Arabia.
| | - Abdel-Basit Al-Odayni
- Chemistry Department, College of Science, King Saud University, Box 2455, Riyadh 11451, Saudi Arabia.
| | - Abdulaziz Ali Alghamdi
- Chemistry Department, College of Science, King Saud University, Box 2455, Riyadh 11451, Saudi Arabia.
| | - Idriss Bedja
- Cornea Research Chair, Department of Optometry, College of Applied Medical Sciences, King Saud University, Riyadh 11433, Saudi Arabia.
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Wang Y, Wang X, Wang X, Song Y, Wang X, Hao J. Design and Development of Lidocaine Microemulsions for Transdermal Delivery. AAPS PharmSciTech 2019; 20:63. [PMID: 30627930 DOI: 10.1208/s12249-018-1263-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 11/26/2018] [Indexed: 01/08/2023] Open
Abstract
Topical administration is a preferable choice for local anesthetic delivery. Microemulsions have shown great effectiveness for transdermal transport of lidocaine. However, fabrication of microemulsions containing highly concentrated lidocaine (10%) to provide an extended local anesthetic effect is still a challenge. This study investigated the feasibility of using microemulsions for transdermal delivery of a high dosage of lidocaine (10%). At first, eutectic mixtures by kneading lidocaine with thymol were tailored to form a lipophilic solution, then the mixtures were readily incorporated into the oil phase of microemulsions after addition of proper surfactants and cosurfactants. The physicochemical properties, the skin permeation, local anesthetic efficacy, and the irritation experiment of the developed microemulsions were evaluated. The optimum composition was as follows: 12% of ethyl oleate as oil phase, 28% of the mixed surfactant, and cosurfactant (polyoxyl 15 hydroxystearate and ethanol) and 60% of the aqueous phase. The average particle size was about 13 nm. The transmission electron microscope (TEM) studies revealed almost homogeneous spherical globules without aggregation. The Fourier-transform infrared spectroscopy (FTIR) results highlighted the drugs homogeneously dispersed in the microemulsions. In vitro skin permeation and in vivo anesthesia effect evaluation indicated that microemulsions can enhance and extend the anesthetic effect of lidocaine. The irritable results indicated that the microemulsions had the better biocompatibility and the negligible influence on the dermal. Therefore, incorporating the eutectic mixtures into microemulsions could be proposed as an attractive choice and a promising transdermal delivery strategy for the future topical anesthetic therapy.
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Use of mixture design in drug-excipient compatibility determinations: Thymol nanoparticles case study. J Pharm Biomed Anal 2017; 137:196-203. [DOI: 10.1016/j.jpba.2017.01.037] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 01/17/2017] [Accepted: 01/18/2017] [Indexed: 01/27/2023]
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5
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Gala U, Chuong MC, Varanasi R, Chauhan H. Characterization and comparison of lidocaine-tetracaine and lidocaine-camphor eutectic mixtures based on their crystallization and hydrogen-bonding abilities. AAPS PharmSciTech 2015; 16:528-36. [PMID: 25370024 DOI: 10.1208/s12249-014-0242-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Accepted: 10/23/2014] [Indexed: 11/30/2022] Open
Abstract
Eutectic mixtures formed between active pharmaceutical ingredients and/or excipients provide vast scope for pharmaceutical applications. This study aimed at the exploration of the crystallization abilities of two eutectic mixtures (EM) i.e., lidocaine-tetracaine and lidocaine-camphor (1:1 w/w). Thermogravimetric analysis (TGA) for degradation behavior whereas modulated temperature differential scanning calorimetry (MTDSC) set in first heating, cooling, and second heating cycles, was used to qualitatively analyze the complex exothermic and endothermic thermal transitions. Raman microspectroscopy characterized vibrational information specific to chemical bonds. Prepared EMs were left at room temperature for 24 h to visually examine their crystallization potentials. The degradation of lidocaine, tetracaine, camphor, lidocaine-tetracaine EM, and lidocaine-camphor EM began at 196.56, 163.82, 76.86, 146.01, and 42.72°C, respectively, which indicated that eutectic mixtures are less thermostable compared to their individual components. The MTDSC showed crystallization peaks for lidocaine, tetracaine, and camphor at 31.86, 29.36, and 174.02°C, respectively (n = 3). When studying the eutectic mixture, no crystallization peak was observed in the lidocaine-tetracaine EM, but a lidocaine-camphor EM crystallization peak was present at 18.81°C. Crystallization occurred in lidocaine-camphor EM after being kept at room temperature for 24 h, but not in lidocaine-tetracaine EM. Certain peak shifts were observed in Raman spectra which indicated possible interactions of eutectic mixture components, when a eutectic mixture was formed. We found that if the components forming a eutectic mixture have crystallization peaks close to each other and have sufficient hydrogen-bonding capability, then their eutectic mixture is least likely to crystallize out (as seen in lidocaine-tetracaine EM) or vice versa (lidocaine-camphor EM).
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Dogrul A, Arslan SA, Tirnaksiz F. Water/oil type microemulsion systems containing lidocaine hydrochloride:in vitroandin vivoevaluation. J Microencapsul 2014; 31:448-60. [DOI: 10.3109/02652048.2013.879926] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Bailey GC, Trost LW. Current Diagnosis and Management of Premature Ejaculation. CURRENT SEXUAL HEALTH REPORTS 2014. [DOI: 10.1007/s11930-014-0014-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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8
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Shimada Y, Goto S, Uchiro H, Hirota K, Terada H. Characteristics of amorphous complex formed between indomethacin and lidocaine hydrochloride. Colloids Surf B Biointerfaces 2013; 105:98-105. [DOI: 10.1016/j.colsurfb.2012.12.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Revised: 12/24/2012] [Accepted: 12/24/2012] [Indexed: 10/27/2022]
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9
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Corvis Y, Négrier P, Lazerges M, Massip S, Léger JM, Espeau P. Lidocaine/l-Menthol Binary System: Cocrystallization versus Solid-State Immiscibility. J Phys Chem B 2010; 114:5420-6. [DOI: 10.1021/jp101303j] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yohann Corvis
- Laboratoire Physico-Chimie Industrielle du Médicament,
EA 4066, Faculté des Sciences Pharmaceutiques et Biologiques,
Université Paris Descartes, 4 Avenue de l’Observatoire,
75 270 Paris Cedex 06, France, Centre de Physique Moléculaire
Optique et Hertzienne, UMR CNRS 5798, Université
de Bordeaux, 351 cours de la Libération, 33 405 Talence Cedex,
France, and EA 4138 - Pharmacochimie, UFR des Sciences Pharmaceutiques,
Université de Bordeaux, 146 rue Léo Saignat, 33 076
Bordeaux Cedex, France
| | - Philippe Négrier
- Laboratoire Physico-Chimie Industrielle du Médicament,
EA 4066, Faculté des Sciences Pharmaceutiques et Biologiques,
Université Paris Descartes, 4 Avenue de l’Observatoire,
75 270 Paris Cedex 06, France, Centre de Physique Moléculaire
Optique et Hertzienne, UMR CNRS 5798, Université
de Bordeaux, 351 cours de la Libération, 33 405 Talence Cedex,
France, and EA 4138 - Pharmacochimie, UFR des Sciences Pharmaceutiques,
Université de Bordeaux, 146 rue Léo Saignat, 33 076
Bordeaux Cedex, France
| | - Mathieu Lazerges
- Laboratoire Physico-Chimie Industrielle du Médicament,
EA 4066, Faculté des Sciences Pharmaceutiques et Biologiques,
Université Paris Descartes, 4 Avenue de l’Observatoire,
75 270 Paris Cedex 06, France, Centre de Physique Moléculaire
Optique et Hertzienne, UMR CNRS 5798, Université
de Bordeaux, 351 cours de la Libération, 33 405 Talence Cedex,
France, and EA 4138 - Pharmacochimie, UFR des Sciences Pharmaceutiques,
Université de Bordeaux, 146 rue Léo Saignat, 33 076
Bordeaux Cedex, France
| | - Stéphane Massip
- Laboratoire Physico-Chimie Industrielle du Médicament,
EA 4066, Faculté des Sciences Pharmaceutiques et Biologiques,
Université Paris Descartes, 4 Avenue de l’Observatoire,
75 270 Paris Cedex 06, France, Centre de Physique Moléculaire
Optique et Hertzienne, UMR CNRS 5798, Université
de Bordeaux, 351 cours de la Libération, 33 405 Talence Cedex,
France, and EA 4138 - Pharmacochimie, UFR des Sciences Pharmaceutiques,
Université de Bordeaux, 146 rue Léo Saignat, 33 076
Bordeaux Cedex, France
| | - Jean-Michel Léger
- Laboratoire Physico-Chimie Industrielle du Médicament,
EA 4066, Faculté des Sciences Pharmaceutiques et Biologiques,
Université Paris Descartes, 4 Avenue de l’Observatoire,
75 270 Paris Cedex 06, France, Centre de Physique Moléculaire
Optique et Hertzienne, UMR CNRS 5798, Université
de Bordeaux, 351 cours de la Libération, 33 405 Talence Cedex,
France, and EA 4138 - Pharmacochimie, UFR des Sciences Pharmaceutiques,
Université de Bordeaux, 146 rue Léo Saignat, 33 076
Bordeaux Cedex, France
| | - Philippe Espeau
- Laboratoire Physico-Chimie Industrielle du Médicament,
EA 4066, Faculté des Sciences Pharmaceutiques et Biologiques,
Université Paris Descartes, 4 Avenue de l’Observatoire,
75 270 Paris Cedex 06, France, Centre de Physique Moléculaire
Optique et Hertzienne, UMR CNRS 5798, Université
de Bordeaux, 351 cours de la Libération, 33 405 Talence Cedex,
France, and EA 4138 - Pharmacochimie, UFR des Sciences Pharmaceutiques,
Université de Bordeaux, 146 rue Léo Saignat, 33 076
Bordeaux Cedex, France
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10
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López-Pinto JM, González-Rodríguez ML, Rabasco AM. Effect of cholesterol and ethanol on dermal delivery from DPPC liposomes. Int J Pharm 2005; 298:1-12. [PMID: 15896932 DOI: 10.1016/j.ijpharm.2005.02.021] [Citation(s) in RCA: 204] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2004] [Revised: 01/21/2005] [Accepted: 02/09/2005] [Indexed: 11/23/2022]
Abstract
The main objective of the present work was to compare the dermal delivery of minoxidil (Mx), a lipophilic drug from ethosomes versus classic liposomes, containing different cholesterol (CHOL) concentrations. All the systems were characterized for shape, lamellarity, particle size and entrapment efficiency percentage (EE), by transmission electron microscopy (TEM), confocal laser scanning microscopy (CLSM), laser diffraction and ultracentrifugation or dialysis methods, respectively. Multilamellar vesicles (MLVs) were obtained and one to six lamellae were visualized by CLSM. The presence of ethanol in the formulations affects the particle size in terms of reducing this parameter. In addition, it was possible to appreciate the influence of CHOL on the vesicle size, because it was increased, as CHOL concentration was higher. When the EE was determined by two different methods (ultracentrifugation and dialysis methods), a clear losing of entrapped drug by the ultracentrifugation method was observed, because the strong energy transmitted to the samples disrupted vesicles. Vesicles were non-occlusively applied on rat skin and the permeation pattern of the different systems, depth into the skin and the main permeation pathway were studied by using beta-carotene as a fluorescent probe. CLSM studies showed that ethosomal systems were much more efficient at delivering the fluorescent substance into the skin in terms of quantity and depth, than either liposomes or hydroalcoholic solutions.
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Affiliation(s)
- J M López-Pinto
- Department of Pharmaceutical Technology, University of Seville, C/ Prof. García González 2, 41012 Seville, Spain
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11
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Kang L, Park MO, Jun HW. Two-phase melt systems of ibuprofen for enhanced membrane permeation. Pharm Dev Technol 2004; 9:349-57. [PMID: 15581071 DOI: 10.1081/pdt-200032991] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
A novel method to convert S- and racemic (RS-) ibuprofen (Ibu) into an oily state at ambient temperature (25 degrees C) was developed. Using menthol and aqueous isopropanol (IPA) as melting point depressing agents, the two-phase melt systems (TMSs) of Ibu consisting of a homogeneous oily phase and a homogeneous aqueous phase were obtained. In TMS with a high S-Ibu: menthol ratio and a low IPA content, the oily phase primarily consisted of Ibu and menthol, whereas the majority of the aqueous phase was IPA and buffer. Using this method, the S-Ibu concentration in the oily phase reached as high as 70% (w/w). The compositional phase diagram was obtained using a titration method to study the relationship between the melting states of the solid components and system composition. S- and RS-Ibu showed different phase diagrams, and the maximum concentration of S-Ibu measured in the oily phase of TMS was much greater than that of RS-Ibu. The permeation study of a series of TMS and non-TMS systems showed that S-Ibu penetrated through shed snake skin faster than RS-Ibu, and the contents of IPA and menthol significantly affected the permeation rates of ibuprofen across shed snake skin, which may be attributed to the higher lipophilicity, and thus, higher solubility of S-Ibu in the skin than RS-Ibu. Such results support the use of S-Ibu TMS for topical formulation development.
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Affiliation(s)
- Lisheng Kang
- Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, The University of Georgia, Athens, Georgia 30602, USA
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12
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Abstract
Local anesthetics (lidocaine or tetracaine) spontaneously melted at 25 degrees C when mixed with thymol and aqueous isopropyl alcohol solution (IPA) at proper ratios and formed novel two-phase melt systems (TMS). The TMS consisted of a homogeneous oil phase containing primarily a local anesthetic agent (lidocaine or tetracaine) and thymol, and a homogeneous aqueous phase containing primarily IPA and pH 9.2 buffer. The relationship between melting of the solid components and system composition was determined from the phase diagram obtained by a titration method. A select TMS of a local anesthetic agent (lidocaine or tetracaine) was directly emulsified to prepare an O/W cream and tested for the anesthetic efficacy on intact human skin. While both lidocaine (6%) and tetracaine (4%) creams were highly effective for dermal anesthesia with a similar onset time, the tetracaine cream exhibited a significantly longer duration of action than the lidocaine cream. An accelerated stability study indicated that lidocaine was significantly more stable than tetracaine in the creams.
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Affiliation(s)
- Lisheng Kang
- Department of Pharmaceutical and Biomedical Sciences, The University of Georgia College of Pharmacy, Athens, Georgia 30602, USA
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