1
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Eid RK, Arafa MF, El Maghraby GM. Water in nigella oil microemulsion for enhanced oral bioavailability of linagliptin. Drug Deliv Transl Res 2024:10.1007/s13346-024-01613-x. [PMID: 38740693 DOI: 10.1007/s13346-024-01613-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/23/2024] [Indexed: 05/16/2024]
Abstract
Linagliptin is hydrophilic antidiabetic with poor oral bioavailability due to poor permeability and pre-systemic metabolism. The objective was to assess w/o microemulsion for enhanced oral bioavailability of linagliptin. Nigella oil was used as oily phase based on its reported antidiabetic effect. Isopropyl myristate (IPM) or capryol were combined with nigella oil to impart intestinal membrane permeabilizing abilities. Pseudoternary phase diagrams were constructed utilizing nigella oil in presence and absence of isopropyl myristate or capryol as oily phase using Tween 60 as surfactant. W/O microemulsion formulations were selected from the constructed phase diagrams and linagliptin was loaded in the internal aqueous phase at a concentration of 0.5 mg/ml. The prepared formulations were physically evaluated and linagliptin in vitro release was monitored. Eventually, the in vivo hypoglycemic effect was assessed using diabetic rats. The developed microemulsions were of w/o type and exhibited Newtonian flow behavior with nigella/capryol microemulsion recording the lowest viscosity. The recorded droplet size values were 104.9, 121.2 and 86.4 nm for nigella, nigella/IPM and nigella/capryol microemulsions, respectively. All microemulsion formulations showed slower drug release rate compared with aqueous suspension with nigella/capryol microemulsion showing the highest release rate compared to other microemulsions. Release data from microemulsion best fitted to Higuchi model. In vivo oral hypoglycemic activity measurement reflected a more intensified hypoglycemic effect with rapid onset after oral ingestion of microemulsion compared to linagliptin dispersion. Nigella oil/IPM-based microemulsion was ranked as the most effective. The investigation highlighted the feasibility of w/o microemulsion for enhanced oral bioavailability of hydrophilic drugs like linagliptin.
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Affiliation(s)
- Rania K Eid
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Tanta University, Tanta, Egypt.
| | - Mona F Arafa
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Tanta University, Tanta, Egypt
- Department of pharmaceutics, Faculty of pharmacy, University of Tabuk, Tabuk, Saudi Arabia
| | - Gamal M El Maghraby
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Tanta University, Tanta, Egypt
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Alyoussef Alkrad J, Sayeh WN, Sijari A, Naser A, Neubert RHH, Dahmash EZ. In vivo and in vitro transdermal availability of Ibuprofen using novel solubility enhancing fluid nanosized carrier systems. Int J Pharm 2024; 650:123684. [PMID: 38070659 DOI: 10.1016/j.ijpharm.2023.123684] [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: 09/29/2023] [Revised: 11/26/2023] [Accepted: 12/05/2023] [Indexed: 12/23/2023]
Abstract
The objective of this study was to explore the benefits of transdermal drug delivery systems as an alternative option for patients who are unable to tolerate oral administration of drugs, such as ibuprofen (IB). To achieve this, nonionic surfactants and three cosolvents were employed to develop new microemulsions (MEs) that contained IB as nanocarriers. The aim was to enhance the solubility and bioavailability of the drug after transdermal administration. The MEs were characterised by droplet size, polydispersity index (PDI), and rheological properties. Furthermore, the flux of IB was evaluated by Franz diffusion cells using excised rat skin and in vivo bioavailability using rats. The results showed that the MEs had ideal viscosity and droplet size below 100 nm. Moreover, using the developed MEs, an improvement in the solubility (170 mg/mL) and flux through the rat skin (94.6 ± 8.0 µg/cm2.h) was achieved. In addition, IB demonstrated a maximum plasma level of 0.064 mg/mL after 8 h of transdermal administration in rats using the ME with an increase in the bioavailability of about 1.5 times in comparison to the commercial IB gel. In conclusion, the developed nonionic MEs containing IB can be ideal nanocarriers and promising formulations for the transdermal administration of IB.
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Affiliation(s)
| | - Waseem N Sayeh
- Faculty of Pharmacy, Isra University, PO Box 22 and 23, Amman, Jordan
| | | | - Abdallah Naser
- Faculty of Pharmacy, Isra University, PO Box 22 and 23, Amman, Jordan
| | - Reinhard H H Neubert
- Institute of Applied Dermatopharmacy, Martin Luther University Halle-Wittenberg, Weinbergweg 23, 06120 Halle Saale, Germany
| | - Eman Zmaily Dahmash
- Department of Chemical and Pharmaceutical Sciences, School of Life Sciences, Pharmacy and Chemistry, Kingston University, London KT1 2EE, United Kingdom.
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3
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Ali HSM, Ahmed SA, Alqurshi AA, Alalawi AM, Shehata AM, Alahmadi YM. Boosting Tadalafil Bioavailability via Sono-Assisted Nano-Emulsion-Based Oral Jellies: Box-Behnken Optimization and Assessment. Pharmaceutics 2022; 14:pharmaceutics14122592. [PMID: 36559086 PMCID: PMC9781150 DOI: 10.3390/pharmaceutics14122592] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 11/19/2022] [Accepted: 11/21/2022] [Indexed: 11/26/2022] Open
Abstract
Tadalafil (TAD) is a poorly soluble, phosphodiesterase inhibitor used to treat erectile dysfunction. The primary goal of this project was to prepare nano-emulsions using ultrasonic technology to address TAD bioavailability concerns. The Box−Behnken design was employed to find prominent correlations between factors impacting the sono-emulsification process. The emulsifier concentration, amplitude level, and ultrasonication time were the independent factors, whereas the average droplet size (ADS) and polydispersity index (PDI) were designated as the response variables. TAD-loaded nano-emulsions (93−289 nm) were generated and the emulsifier concentration showed a crucial role in directing emulsion droplet size. The model desirability function was utilized to optimize a nano-emulsion with a small ADS (99.67 ± 7.55 nm) and PDI (0.45 ± 0.04) by adjusting the emulsifiers concentration, amplitude level, and ultrasonication time at 9.85%, 33%, 49 s, respectively. The optimized nano-emulsions did not demonstrate any precipitation or phase separation after stability stress tests. TAD jellies were formulated based on the optimized nano-emulsion and subjected to in vitro evaluation for physical characteristics; TAD content, pH, spreadability, viscosity, syneresis, and taste-masking ability. An optimized nano-emulsion-based jelly (NEJ) formulation showed more than 96% drug dissolution in 30 min relative to 14% for the unprocessed TAD. In vivo assessment of NEJ in experimental rats demonstrated a significant enhancement (p < 0.05) of TAD bioavailability with an AUC0−24h of 2045 ± 70.2 vs. 259.9 ± 17.7 ng·h·mL−1 for the unprocessed TAD. Storage stability results revealed that NEJ remained stable with unremarkable changes in properties for 3 months. Overall, NEJ can be regarded as a successful therapeutic option for TAD administration with immediate-release properties and improved bioavailability.
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Affiliation(s)
- Hany S. M. Ali
- Department of Pharmaceutics and Pharmaceutical Technology, College of Pharmacy, Taibah University, Al-Madinah Al-Munawarah P.O. Box 344, Saudi Arabia
- Department of Pharmaceutics, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
- Correspondence: ; Tel.: +966-50-286-4018; Fax: +966-4-847-5027
| | - Sameh A. Ahmed
- Department of Pharmacognosy and Pharmaceutical Chemistry, College of Pharmacy, Taibah University, Al-Madinah Al-Munawarah P.O. Box 344, Saudi Arabia
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
| | - Abdulmalik A. Alqurshi
- Department of Pharmaceutics and Pharmaceutical Technology, College of Pharmacy, Taibah University, Al-Madinah Al-Munawarah P.O. Box 344, Saudi Arabia
| | - Ali M. Alalawi
- Department of Pharmacology and Toxicology, College of Pharmacy, Taibah University, Al-Madinah Al-Munawarah P.O. Box 344, Saudi Arabia
| | - Ahmed M. Shehata
- Department of Pharmacology and Toxicology, College of Pharmacy, Taibah University, Al-Madinah Al-Munawarah P.O. Box 344, Saudi Arabia
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Beni-Suef University, Beni-Suef 62521, Egypt
| | - Yaser M. Alahmadi
- Department of Clinical and Hospital Pharmacy, College of Pharmacy, Taibah University, Al-Madinah Al-Munawarah P.O. Box 344, Saudi Arabia
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Xu Y, Cai Y, Meng Y, Wu L, Chen J, Cao W, Chu X. Liposome and microemulsion loaded with ibuprofen: from preparation to mechanism of drug transport. J Microencapsul 2022; 39:539-551. [PMID: 36190415 DOI: 10.1080/02652048.2022.2131920] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
To compare the difference between liposome (LP) and microemulsion (ME) in delivering ibuprofen (IBU) transdermally and explore relative mechanism. IBU-LP and IBU-ME were prepared by ethanol injection and spontaneous emulsification, respectively. The percutaneous delivery was evaluated using Franz diffusion cells. Fourier transform infra-red spectroscopy (FTIR), differential scanning calorimetry (DSC), activation energy (Ea), and confocal laser scanning microscopy (CLSM) were used to investigate the transdermal mechanism. The particle size and encapsulation efficiency were 228.00 ± 8.60 nm, 86.68 ± 1.43%(w/w) for IBU-LP, and 56.74 ± 7.11 nm, 91.08 ± 3.27%(w/w) for IBU-ME. Percutaneous study showed that formulations enhanced permeation and drug retention in the skin. FTIR and DSC showed that the permeation occurred due to the interaction of the formulations with the lipid bilayer and the protein. The decrease in Ea (1.506 and 0.939 kcal/mol) revealed that the stratum corneum (SC) lipid bilayers were significantly disrupted and this destructive effect of IBU-LP was stronger. IBU-LP was superior to IBU-ME in the aspects of transdermal delivery of IBU.
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Affiliation(s)
- Yuhang Xu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, PR China
| | - Ye Cai
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, PR China
| | - Yun Meng
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, PR China
| | - Long Wu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, PR China
| | - Jingbao Chen
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, PR China
| | - Wenxuan Cao
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, PR China
| | - Xiaoqin Chu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, PR China.,Institute of Pharmaceutics, Anhui Academy of Chinese Medicine, Hefei, PR China.,Anhui Province Key Laboratory of Pharmaceutical Preparation Technology and Application, Hefei, PR China
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In vitro 3D malignant melanoma model for the evaluation of hypericin-loaded oil-in-water microemulsion in photodynamic therapy. Biodes Manuf 2022. [DOI: 10.1007/s42242-022-00202-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Dong B, Chen J, Cai Y, Wu W, Chu X. In vitro and in vivo evaluation of cinnamaldehyde Microemulsion-Mucus interaction. J Food Biochem 2022; 46:e14307. [PMID: 35780300 DOI: 10.1111/jfbc.14307] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 06/02/2022] [Accepted: 06/06/2022] [Indexed: 12/22/2022]
Abstract
The current investigation explores the possible mechanism of the microemulsion drug delivery system to improve the oral bioavailability of cinnamaldehyde (CA), an important food spice, from the perspective of the microemulsion-mucus system. The cinnamaldehyde microemulsion (CA-ME) was prepared by the water titration method combined with the pseudo-ternary phase diagram. The dynamic analysis was applied to detect the drug release in vitro. An intestinal mucosal injury test was conducted to evaluate the safety of CA-ME and drug absorption across the intestinal tract of rats was investigated through an Ussing chamber system. The rheology of blank mucus and drug-loaded mucus was investigated using a rheometer. The bioavailability of CA-ME in rats was evaluated through pharmacokinetic characteristics. The ratio of optimal prescription was Tween 80: 1,2-propanediol: vitamin E oil: CA: water = 24.3:4.8:5:7.5:58.4. The droplets were uniform in size and evenly dispersed. Rheological studies showed that the microemulsion-mucus system all exhibit pseudoplastic fluid behavior, and CA-ME increased the viscosity of the mucus to a certain extent. Compared with CA solution, CA-ME promoted the absorption of CA in various intestinal segments, especially the ileum. Pharmacokinetic experiments showed that the relative bioavailability of CA-ME was enhanced 2.5-fold higher than that of CA solution. ME as a carrier for lipophobic substances, may increase the viscosity of the intestine mucus system to obtain longer residue time and better absorption. PRACTICAL APPLICATIONS: In this study, in vitro absorption Ussing model was combined with rheological and pharmacokinetic analysis to systematically analyze the intestinal mucus mechanism of microemulsion to improve the oral bioavailability of cinnamic aldehyde. It laid the foundation for exploring the absorption and transport of drugs in the intestinal mucus barrier.
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Affiliation(s)
- Baoqi Dong
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Jingbao Chen
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Ye Cai
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Wenqing Wu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Xiaoqin Chu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China.,Institute of Pharmaceutics, Anhui Academy of Chinese Medicine, Hefei, China.,Anhui Province Key Laboratory of Pharmaceutical Preparation Technology and Application, Hefei, Anhui, China.,Engineering Technology Research Center of Modernized Pharmaceutics, Anhui Education Department (AUCM), Hefei, Anhui, China
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Eid RK, Arafa MF, Ashour DS, Essa EA, Zoghroban HS, Issa YA, Nomeir HM, Abo Safia HS, El Maghraby GM. Eudragit coated microemulsion for enhanced efficacy of spiramycin against toxoplasmic encephalitis. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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HLD-NAC design and evaluation of a fully dilutable lecithin-linker SMEDDS for ibuprofen. Int J Pharm 2021; 610:121237. [PMID: 34718090 DOI: 10.1016/j.ijpharm.2021.121237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 10/19/2021] [Accepted: 10/24/2021] [Indexed: 11/22/2022]
Abstract
Lecithin-linker microemulsions have been previously proposed as a platform for designing a fully dilutable self-microemulsifying drug delivery system (SMEDDS). This SMEDDS formulation, composed of ethyl caprate (oil), lecithin (Le), glycerol monooleate (lipophilic linker, LL) and polyglycerol caprylate (hydrophilic linker, HL), produced a ternary phase diagram (TPD) that had a fully dilutable path suitable for oral drug delivery. However, introducing ibuprofen as an active pharmaceutical ingredient (API) resulted in TPD phase boundaries that eliminated the fully dilutable path. The purpose of this work was to understand the origin of the changes in the TPD, use that understanding to restore the fully dilutable path with an ibuprofen-loaded SMEDDS, and finally to evaluate the absorption of ibuprofen in vivo. The effect of ibuprofen on the HLD (hydrophilic-lipophilic difference, interpreted as normalized net interfacial curvature) of the system was evaluated via a polar oil model, showing that ibuprofen played a surfactant-like role, having a characteristic curvature (Cc) value of +5 (highly hydrophobic). The net-average curvature (NAC) framework used the HLD calculated with Le, LL, HL and ibuprofen Cc to generate TPDs in ibuprofen lecithin-linker systems. The HLD-NAC simulations show that restoring full dilutability required a highly hydrophilic linker (HL-) with a Cc of -5 or more negative. The fully dilutable path was restored after introducing a hexaglycerol caprylate as HL- (Cc = -6). Plasma concentration profiles obtained with this ibuprofen-loaded SMEDDS showed a more than three-fold increase in the area under the curve (AUC) of rat plasma concentration profiles compared to the same 25 mg/kg ibuprofen dose in suspension.
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Qi H, Dun J, Zhao F, Qi X. In-vitro and in-vivo evaluation of taste-masked ibuprofen formulated in oral dry emulsions. Drug Dev Ind Pharm 2021; 47:1318-1325. [PMID: 34605349 DOI: 10.1080/03639045.2021.1989458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVE The aim of this study was to develop a pediatric oral preparation for ibuprofen. SIGNIFICANCE Ibuprofen is widely used for defervescence in children, but medication compliance is poor due to its bitter taste. Dry emulsions possess good stability and can be transported and stored in solid form; they can be dispersed into liquid emulsions with water and easily administered to children. METHODS In this study, a dry emulsion excipient was prepared by spray drying: a mixture of orange peel and corn oils (3:7, w/w) was used as the oil phase and solvent for ibuprofen; gum arabic and gum tragacanth were chosen as emulsifiers; and maltodextrin was used as a solid carrier. RESULTS The particle sizes of the liquid and reconstituted emulsions were 5.75 µm and 6.11 µm, respectively; the average particle size distribution of the dry emulsion powder was 8.13 µm; scanning electron microscopy showed that the dry emulsion powder was composed of evenly distributed smooth spheres. At a drug loading of 36.52 ± 1.15 mg/g, 90% of ibuprofen was released from the dry emulsion excipient within 30 min. Sensory evaluations using human volunteers, rats, and an electronic tongue demonstrated that the emulsion had a taste-masking effect on ibuprofen. It was further corroborated by in vivo studies using a rat model that highlighted a 1.76-fold increase in ibuprofen absorption when the drug was administered as an emulsion compared with granules. CONCLUSIONS These results indicate that the dry emulsion for taste-masking is promising and valuable in the development of ibuprofen for pediatrics.
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Affiliation(s)
- Haojun Qi
- Department of Pharmaceutics, School of Pharmacy, Hebei Medical University, Shijiazhuang, PR China
| | - Jiening Dun
- Department of Pharmaceutics, School of Pharmacy, Hebei Medical University, Shijiazhuang, PR China
| | - Feng Zhao
- Department of Pharmaceutics, School of Pharmacy, Hebei Medical University, Shijiazhuang, PR China
| | - Xiaodan Qi
- Department of Pharmaceutics, School of Pharmacy, Hebei Medical University, Shijiazhuang, PR China
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Enhanced oral bioavailability and gastroprotective effect of ibuprofen through mixed polymer-lipid nanoparticles. Ther Deliv 2021; 12:363-374. [PMID: 33849297 DOI: 10.4155/tde-2020-0125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Objectives: The aim of this study was to design and formulate mixed polymer-lipid nanoparticles (PLNs) for the delivery of ibuprofen. Methods: The mixed PLNs were prepared by a single modified emulsification solvent evaporation method. Key findings: Core-shell-shaped mixed PLNs were successfully prepared, with sizes in the nano range (193.3 ± 0.70 to 795.8 ± 0.70 nm) and ζ potential (-26.8 ± 0.45 to -42.8 ± 0.30 mV). Entrapment efficiency ranged from 80.3 to 93.6%. Conclusions: Pharmacokinetic parameters showed great improvement in Cmax and Tmax of ibuprofen from the formulation PLNs8 compared with the respective Brufen® and pure drugs, indicating improvement in bioavailability of the drug.
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Froelich A, Osmałek T, Jadach B, Puri V, Michniak-Kohn B. Microemulsion-Based Media in Nose-to-Brain Drug Delivery. Pharmaceutics 2021; 13:201. [PMID: 33540856 PMCID: PMC7912993 DOI: 10.3390/pharmaceutics13020201] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/22/2021] [Accepted: 01/28/2021] [Indexed: 12/12/2022] Open
Abstract
Nose-to-brain drug delivery has recently attracted enormous attention as an alternative to other delivery routes, including the most popular oral one. Due to the unique anatomical features of the nasal cavity, drugs administered intranasally can be delivered directly to the central nervous system. The most important advantage of this approach is the ability to avoid the blood-brain barrier surrounding the brain and blocking the entry of exogenous substances to the central nervous system. Moreover, selective brain targeting could possibly avoid peripheral side effects of pharmacotherapy. The challenges associated with nose-to-brain drug delivery are mostly due to the small volume of the nasal cavity and insufficient drug absorption from nasal mucosa. These issues could be minimized by using a properly designed drug carrier. Microemulsions as potential drug delivery systems offer good solubilizing properties and the ability to enhance drug permeation through biological membranes. The aim of this review is to summarize the current status of the research focused on microemulsion-based systems for nose-to-brain delivery with special attention to the most extensively investigated neurological and psychiatric conditions, such as neurodegenerative diseases, epilepsy, and schizophrenia.
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Affiliation(s)
- Anna Froelich
- Chair and Department of Pharmaceutical Technology, Poznan University of Medical Sciences, 6 Grunwaldzka Street, 60-780 Poznań, Poland; (T.O.); (B.J.)
| | - Tomasz Osmałek
- Chair and Department of Pharmaceutical Technology, Poznan University of Medical Sciences, 6 Grunwaldzka Street, 60-780 Poznań, Poland; (T.O.); (B.J.)
| | - Barbara Jadach
- Chair and Department of Pharmaceutical Technology, Poznan University of Medical Sciences, 6 Grunwaldzka Street, 60-780 Poznań, Poland; (T.O.); (B.J.)
| | - Vinam Puri
- Center for Dermal Research and Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA; (V.P.); (B.M.-K.)
| | - Bozena Michniak-Kohn
- Center for Dermal Research and Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA; (V.P.); (B.M.-K.)
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Design of Non-Haemolytic Nanoemulsions for Intravenous Administration of Hydrophobic APIs. Pharmaceutics 2020; 12:pharmaceutics12121141. [PMID: 33255606 PMCID: PMC7760703 DOI: 10.3390/pharmaceutics12121141] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 11/06/2020] [Accepted: 11/19/2020] [Indexed: 02/07/2023] Open
Abstract
Among advanced formulation strategies, nanoemulsions are considered useful drug-delivery systems allowing to improve the solubility and the bioavailability of lipophilic drugs. To select safe excipients for nanoemulsion formulation and to discard any haemolytic potential, an in vitro miniaturized test was performed on human whole blood. From haemolysis results obtained on eighteen of the most commonly used excipients, a medium chain triglyceride, a surfactant, and a solubilizer were selected for formulation assays. Based on a design of experiments and a ternary diagram, the feasibility of nanoemulsions was determined. The composition was defined to produce monodisperse nanodroplets with a diameter of either 50 or 120 nm, and their physicochemical properties were optimized to be suitable for intravenous administration. These nanoemulsions, stable over 21 days in storage conditions, were shown to be able to encapsulate with high encapsulation efficiency and high drug loading, up to 16% (w/w), two water practically insoluble drug models: ibuprofen and fenofibrate. Both drugs may be released according to a modulable profile in sink conditions. Such nanoemulsions appear as a very promising and attractive strategy for the efficient early preclinical development of hydrophobic drugs.
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Anuar N, Sabri AH, Bustami Effendi TJ, Abdul Hamid K. Development and characterisation of ibuprofen-loaded nanoemulsion with enhanced oral bioavailability. Heliyon 2020; 6:e04570. [PMID: 32775730 PMCID: PMC7394867 DOI: 10.1016/j.heliyon.2020.e04570] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 07/14/2020] [Accepted: 07/23/2020] [Indexed: 02/06/2023] Open
Abstract
Lipophilic compounds constitute a majority of therapeutics in the pipeline of drug discovery. Despite possessing enhanced efficacy and permeability, some of these drugs suffer poor solubility necessitating the need of a suitable drug delivery system. Nanoemulsion is a drug delivery system that provides enhanced solubility for poorly soluble drugs in an attempt to improve the oral bioavailability. The purpose of this study is to develop a nanoemulsion system using ibuprofen as a model drug in order to investigate the potential of this colloidal system to enhance the absorption of poorly water-soluble drugs. Ibuprofen loaded-nanoemulsion with different drug concentrations (1.5, 3 and 6% w/w) were formulated from olive oil, sucrose ester L-1695 and glycerol using D-phase emulsification technique. A pseudoternary phase diagram was utilised to identify the optimal excipient composition to formulate the nanoemulsion system. In vitro diffusion chamber studies using rodent intestinal linings highlighted improved absorption profile when ibuprofen was delivered as nanoemulsion in comparison to microemulsions and drug-in-oil systems. This was further corroborated by in vivo studies using rat model that highlighted a two-fold increase in ibuprofen absorption when the drug was administered as a nanoemulsion relative to drug-in-oil system. On the other hand, when ibuprofen was administered as microemulsions, only a 1.5-fold increase in absorption was observed relative to drug-in-oil system. Thus, this study highlights the potential of using nanoemulsion as a drug delivery system to enhance the oral bioavailability of hydrophobic drugs.
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Affiliation(s)
- Nurfazreen Anuar
- Department of Pharmaceutics, Faculty of Pharmacy, Universiti Teknologi MARA, Cawangan Selangor, 42300 Puncak Alam, Selangor, Malaysia
| | - Akmal H. Sabri
- Advanced Materials and Healthcare Technologies Group, School of Pharmacy, The University of Nottingham, NG7 2RD, Nottingham, UK
| | - Tommy Julianto Bustami Effendi
- Department of Pharmaceutics, Faculty of Pharmacy, Universiti Teknologi MARA, Cawangan Selangor, 42300 Puncak Alam, Selangor, Malaysia
| | - Khuriah Abdul Hamid
- Department of Pharmaceutics, Faculty of Pharmacy, Universiti Teknologi MARA, Cawangan Selangor, 42300 Puncak Alam, Selangor, Malaysia
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Preparation and evaluation of protective effect of pumpkin seed oil based self nanoemulsifying oral delivery system against ibuprofen-induced peptic ulcer. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.05.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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15
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Ha ES, Lee SK, Choi DH, Jeong SH, Hwang SJ, Kim MS. Application of diethylene glycol monoethyl ether in solubilization of poorly water-soluble drugs. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2019. [DOI: 10.1007/s40005-019-00454-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Alshaikh RA, Essa EA, El Maghraby GM. Eutexia for enhanced dissolution rate and anti-inflammatory activity of nonsteroidal anti-inflammatory agents: Caffeine as a melting point modulator. Int J Pharm 2019; 563:395-405. [DOI: 10.1016/j.ijpharm.2019.04.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Revised: 04/06/2019] [Accepted: 04/08/2019] [Indexed: 01/23/2023]
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17
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da Silva PB, de Freitas ES, Solcia MC, de Souza PC, da Silva MM, Batista AA, Eismann CE, Rolisola AMCM, Menegário AA, Cardoso RF, Chorilli M, Pavan FR. A Nanostructured Lipid System to Improve the Oral Bioavailability of Ruthenium(II) Complexes for the Treatment of Infections Caused by Mycobacterium tuberculosis. Front Microbiol 2018; 9:2930. [PMID: 30574128 PMCID: PMC6291527 DOI: 10.3389/fmicb.2018.02930] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 11/14/2018] [Indexed: 01/28/2023] Open
Abstract
Tuberculosis (TB) is an infectious, airborne disease caused by the bacterium Mycobacterium tuberculosis that mainly affects the lungs. Fortunately, tuberculosis is a curable disease, and in recent years, death rates for this disease have decreased. However, the existence of antibiotic-resistant strains and the occurrence of co-infections with human immunodeficiency virus (HIV), have led to increased mortality in recent years. Another area of concern is that one-third of the world's population is currently infected with M. tuberculosis in its latent state, serving as a potential reservoir for active TB. In an effort to address the failure of current TB drugs, greater attention is being given to the importance of bioinorganic chemistry as an ally in new research into the development of anti-TB drugs. Ruthenium (Ru) is a chemical element that can mimic iron (Fe) in the body. In previous studies involving the following heteroleptic Ru complexes, [Ru(pic)(dppb)(bipy)]PF6 (SCAR1), [Ru(pic)(dppb)(Me-bipy)]PF6 (SCAR2), [Ru(pic)(dppb)(phen)]PF6 (SCAR4), cis-[Ru(pic)(dppe)2]PF6 (SCAR5), and [Ru(pic)(dppe)(phen)]PF6 (SCAR7), we observed excellent anti-TB activity, moderate cell-toxicity, and a lack of oral bioavailability in an in vivo model of these complexes. Therefore, the objective of this study was to evaluate the toxicity and oral bioavailability of these complexes by loading them into a nanostructured lipid system. The nanostructured lipid system was generated using different ratios of surfactant (soybean phosphatidylcholine, Eumulgin®, and sodium oleate), aqueous phase (phosphate buffer with a concentration of 1X and pH 7.4), and oil (cholesterol) to generate a system for the incorporation of Ru(II) compounds. The anti-TB activity of the compounds was determined using a microdilution assay with Resazurin (REMA) against strains of M. tuberculosis H37Rv and clinical isolates resistant. Cytotoxicity assay using J774.A1 cells (ATCC TIB-67) and intra-macrophage activity were performed. The oral bioavailability assay was used to analyze blood collected from female BALB/C mice. Plasma collected from the same mice was analyzed via inductively coupled plasma mass spectrometry (ICP-MS) to quantify the number of Ru ions. The complexes loaded into the nanostructured lipid system maintained in vitro activity and toxicity was found to be reduced compared with the compounds that were not loaded. The complexes showed intra-macrophagic activity and were orally bioavailable.
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Affiliation(s)
- Patricia B da Silva
- School of Pharmaceutical Sciences, Universidade Estadual Paulista, Araraquara, Brazil
| | | | | | | | | | | | - Carlos E Eismann
- Environmental Studies Center, Universidade Estadual Paulista, Rio Claro, Brazil
| | | | - Amauri A Menegário
- Environmental Studies Center, Universidade Estadual Paulista, Rio Claro, Brazil
| | | | - Marlus Chorilli
- School of Pharmaceutical Sciences, Universidade Estadual Paulista, Araraquara, Brazil
| | - Fernando R Pavan
- School of Pharmaceutical Sciences, Universidade Estadual Paulista, Araraquara, Brazil
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18
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Yellepeddi VK, Radhakrishnan J, Radhakrishnan R. Penetration and pharmacokinetics of non-steroidal anti-inflammatory drugs in rat prostate tissue. Prostate 2018; 78:80-85. [PMID: 29105796 DOI: 10.1002/pros.23447] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 10/10/2017] [Indexed: 12/30/2022]
Abstract
BACKGROUND Chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) involves inflammation of the prostate and affects the quality of life of men of all ages. It is well reported in clinical studies that the treatment for CP/CPPS using nonsteroidal anti-inflammatory drugs (NSAIDs) produced favorable outcomes. However, currently, there are no guidelines on choice of the NSAIDs for the treatment of CP/CPPS. Therefore, in the current research study, we evaluated the prostate tissue penetration of four NSAIDs in rats to provide guidance on choice of NSAIDs for the treatment of CP/CPPS. METHODS Male Sprague-Dawley rats were administered orally with four NSAIDs viz. celecoxib, diclofenac, ibuprofen, and naproxen at 500 mg/kg dose. The animals were then sacrificed at various time points, and their prostate tissues were harvested. The NSAIDs were then extracted from the prostate tissues using liquid extraction technique, and their concentration in prostate tissue was quantified using high-performance liquid chromatography (HPLC). The prostate tissue penetration and related pharmacokinetic parameters were evaluated by non-compartmental analysis. RESULTS The HPLC method for quantifying NSAIDs in prostate tissue resulted in single, sharp peaks without any interference and all validation parameters were within limits. Celecoxib showed the highest area under the curve (AUC) [146.50 ± 2.75 μg/mL*h] of all NSAID's. A two-factor analysis of variance (ANOVA) with replication indicated an overall statistically significant difference in the pharmacokinetic parameters for celecoxib, diclofenac, ibuprofen, and naproxen. CONCLUSIONS This study for the first time reported the relative prostate tissue penetration of four NSAIDs. The pharmacokinetic data indicated that celecoxib has the highest penetration and retention in rat prostate tissues. Therefore, celecoxib may be considered as a better choice for the treatment CP/CPPS involving NSAIDs.
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Affiliation(s)
- Venkata K Yellepeddi
- College of Pharmacy, Roseman University of Health Sciences, South Jordan, Utah
- Department of Pharmaceutics and Pharmaceutical Chemistry, College of Pharmacy, University of Utah, Salt Lake City, Utah
| | | | - Rajan Radhakrishnan
- Department of Integrated Medical Science, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, Florida
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19
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Piazzini V, Monteforte E, Luceri C, Bigagli E, Bilia AR, Bergonzi MC. Nanoemulsion for improving solubility and permeability of Vitex agnus-castus extract: formulation and in vitro evaluation using PAMPA and Caco-2 approaches. Drug Deliv 2017; 24:380-390. [PMID: 28165811 PMCID: PMC8241024 DOI: 10.1080/10717544.2016.1256002] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 10/26/2016] [Accepted: 10/30/2016] [Indexed: 12/20/2022] Open
Abstract
The purpose of this study was to develop new formulation for an improved oral delivery of Vitex agnus-castus (VAC) extract. After the optimization and validation of analytical method for quali-quantitative characterization of extract, nanoemulsion (NE) was selected as lipid-based nanocarrier. The composition of extract-loaded NE resulted in triacetin as oil phase, labrasol as surfactant, cremophor EL as co-surfactant and water. NE contains until 60 mg/mL of extract. It was characterized by DLS and TEM analyses and its droplets appear dark with an average diameter of 11.82 ± 0.125 nm and a polydispersity index (PdI) of 0.117 ± 0.019. The aqueous solubility of the extract was improved about 10 times: the extract is completely soluble in the NE at the concentration of 60 mg/mL, while its solubility in water results less than 6 mg. The passive intestinal permeation was tested by using parallel artificial membrane permeation assay (PAMPA) and the permeation across Caco-2 cells after preliminary cytotoxicity studies were also evaluated. NE shows a good solubilizing effect of the constituents of the extract, compared with aqueous solution. The total amount of constituents permeated from NE to acceptor compartment is greater than that permeated from saturated aqueous solution. Caco-2 test confirmed PAMPA results and they revealed that NE was successful in increasing the permeation of VAC extract. This formulation could improve oral bioavailability of extract due to enhanced solubility and permeability of phytocomplex.
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Affiliation(s)
- Vieri Piazzini
- Department of Chemistry, University of Florence, Sesto Fiorentino, FI, Italy and
| | - Elena Monteforte
- Department of Chemistry, University of Florence, Sesto Fiorentino, FI, Italy and
| | - Cristina Luceri
- NEUROFARBA, Department of Neurosciences, Psychology, Drug Research and Child Health, Section of Pharmacology and Toxicology, University of Florence, Florence, Italy
| | - Elisabetta Bigagli
- NEUROFARBA, Department of Neurosciences, Psychology, Drug Research and Child Health, Section of Pharmacology and Toxicology, University of Florence, Florence, Italy
| | - Anna Rita Bilia
- Department of Chemistry, University of Florence, Sesto Fiorentino, FI, Italy and
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20
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Azizi M, Esmaeili F, Partoazar A, Ejtemaei Mehr S, Amani A. Efficacy of nano- and microemulsion-based topical gels in delivery of ibuprofen: an in vivo study. J Microencapsul 2017; 34:195-202. [DOI: 10.1080/02652048.2017.1316324] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Mosayeb Azizi
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Fariba Esmaeili
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Partoazar
- Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Shahram Ejtemaei Mehr
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Amir Amani
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Medical Biomaterials Research Center, Tehran University of Medical Sciences, Tehran, Iran
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21
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Theochari I, Goulielmaki M, Danino D, Papadimitriou V, Pintzas A, Xenakis A. Drug nanocarriers for cancer chemotherapy based on microemulsions: The case of Vemurafenib analog PLX4720. Colloids Surf B Biointerfaces 2017; 154:350-356. [PMID: 28365424 DOI: 10.1016/j.colsurfb.2017.03.032] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 03/07/2017] [Accepted: 03/14/2017] [Indexed: 11/16/2022]
Abstract
Oil-in-water (O/W) microemulsions based on Tween 80 as the emulsifier and triacetin as the dispersed oil phase were formulated to be used as delivery vehicles of Vemurafenib analog PLX4720. PLX4720 is a lipophilic antitumor drug against various cancer types correlated with the BRAFV600E mutation. The limits of the single-phase region corresponding to O/W microemulsions as described by ternary phase diagrams were examined. Droplet size measurements determined by dynamic light scattering (DLS) showed mean droplet diameters equal to 10±0.1nm both in the presence and in absence of the drug. Cryogenic-transmission electron microscopy (Cryo-TEM) images of the microemulsions showed the existence of small structures with uniform size distribution having also average diameters of approximately 10nm. Electron paramagnetic resonance (EPR) spectroscopy applying the spin probing technique confirmed PLX4720 location in the oil cores excluding its participation in the surfactants monolayer. Furthermore, cell viability assays on colon cancer cell lines Colo-205 and HT29 showed that microemulsions did not exhibit any cytotoxicity when added in ratios between 0.005% v/v and 0.2% v/v. When the cells were treated with encapsulated PLX4720 at two different concentrations (0.063 and 0.12μΜ) the same response as when dissolved in classic DMSO was observed.
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Affiliation(s)
- Ioanna Theochari
- Institute of Biology, Medicinal Chemistry & Biotechnology, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., 11635, Athens, Greece
| | - Maria Goulielmaki
- Institute of Biology, Medicinal Chemistry & Biotechnology, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., 11635, Athens, Greece
| | - Dganit Danino
- Faculty of Biotechnology & Food Engineering, Technion-Israel Institute of Technology, 32000, Haifa, Israel
| | - Vassiliki Papadimitriou
- Institute of Biology, Medicinal Chemistry & Biotechnology, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., 11635, Athens, Greece.
| | - Alexandros Pintzas
- Institute of Biology, Medicinal Chemistry & Biotechnology, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., 11635, Athens, Greece
| | - Aristotelis Xenakis
- Institute of Biology, Medicinal Chemistry & Biotechnology, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., 11635, Athens, Greece
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22
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Singh J, Garg T, Rath G, Goyal AK. Advances in nanotechnology-based carrier systems for targeted delivery of bioactive drug molecules with special emphasis on immunotherapy in drug resistant tuberculosis – a critical review. Drug Deliv 2015; 23:1676-98. [DOI: 10.3109/10717544.2015.1074765] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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23
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Mueller SO, Guillouzo A, Hewitt PG, Richert L. Drug biokinetic and toxicity assessments in rat and human primary hepatocytes and HepaRG cells within the EU-funded Predict-IV project. Toxicol In Vitro 2015; 30:19-26. [PMID: 25952325 DOI: 10.1016/j.tiv.2015.04.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Revised: 03/24/2015] [Accepted: 04/15/2015] [Indexed: 12/17/2022]
Abstract
The overall aim of Predict-IV (EU-funded collaborative project #202222) was to develop improved testing strategies for drug safety in the late discovery phase. One major focus was the prediction of hepatotoxicity as liver remains one of the major organ leading to failure in drug development, drug withdrawal and has a poor predictivity from animal experiments. In this overview we describe the use and applicability of the three cell models employed, i.e., primary rat hepatocytes, primary human hepatocytes and the human HepaRG cell line, using four model compounds, chlorpromazine, ibuprofen, cyclosporine A and amiodarone. This overview described the data generated on mode of action of liver toxicity after long-term repeat-dosing. Moreover we have quantified parent compound and its distribution in various in vitro compartments, which allowed us to develop biokinetic models where we could derive real exposure concentrations in vitro. In conclusion, the complex data set enables quantitative measurements that proved the concept that we can define human relevant free and toxic exposure levels in vitro. Further compounds have to be analyzed in a broader concentration range to fully exploit these promising results for improved prediction of hepatotoxicity and hazard assessment for humans.
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Affiliation(s)
- Stefan O Mueller
- Nonclinical Safety, Merck Serono, Merck KGaA, Darmstadt, Germany; Food Chemistry and Toxicology, TU Kaiserslautern, Kaiserslautern, Germany.
| | | | - Philip G Hewitt
- Nonclinical Safety, Merck Serono, Merck KGaA, Darmstadt, Germany
| | - Lysiane Richert
- KaLy-Cell, 20A Rue du Général Leclerc, Plobsheim, France; Université de Franche-Comté, 25030 Besançon, France
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24
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Truisi GL, Consiglio ED, Parmentier C, Savary CC, Pomponio G, Bois F, Lauer B, Jossé R, Hewitt PG, Mueller SO, Richert L, Guillouzo A, Testai E. Understanding the biokinetics of ibuprofen after single and repeated treatments in rat and human in vitro liver cell systems. Toxicol Lett 2015; 233:172-86. [DOI: 10.1016/j.toxlet.2015.01.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2014] [Revised: 01/05/2015] [Accepted: 01/07/2015] [Indexed: 01/09/2023]
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25
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Álvarez G, Varela J, Márquez P, Gabay M, Arias Rivas CE, Cuchilla K, Echeverría GA, Piro OE, Chorilli M, Leal SM, Escobar P, Serna E, Torres S, Yaluff G, Vera de Bilbao NI, González M, Cerecetto H. Optimization of antitrypanosomatid agents: identification of nonmutagenic drug candidates with in vivo activity. J Med Chem 2014; 57:3984-99. [PMID: 24749923 DOI: 10.1021/jm500018m] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Chagas disease, caused by Trypanosoma cruzi parasite, was described thousands of years ago. Currently, it affects millions of people, mostly in Latin America, and there are not suitable drugs for treating it. As an attempt to find appropriate drugs to deal with this problem, we report here on the design, synthesis, and characterization of 82 new compounds. Trypanosomicidal behavior in vitro showed more than 20 outstanding derivatives with anti-Trypanosoma cruzi activity. Furthermore, we studied the nonspecific toxicity against mammalian cells determining their selectivity and also performed mutagenicity studies. Proof of concept, in vivo studies, was conducted with two of the most promising derivatives (77 and 80). They were identified as candidates because they have (i) very simple and cost-effective syntheses; (ii) activity against different stages and strains of the parasite showing excellent in vivo behavior during the acute phase of Chagas disease; and (iii) neither nonspecific toxicity nor mutagenic activity.
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Affiliation(s)
- Guzmán Álvarez
- Grupo de Química Medicinal, Laboratorio de Química Orgánica, Facultad de Ciencias-Facultad de Química, Universidad de la República , 11400 Montevideo, Uruguay
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26
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Agrawal AG, Kumar A, Gide PS. Formulation of solid self-nanoemulsifying drug delivery systems usingN-methyl pyrrolidone as cosolvent. Drug Dev Ind Pharm 2014; 41:594-604. [DOI: 10.3109/03639045.2014.886695] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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27
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Application of liposomes in treatment of rheumatoid arthritis: quo vadis. ScientificWorldJournal 2014; 2014:978351. [PMID: 24688450 PMCID: PMC3932268 DOI: 10.1155/2014/978351] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2013] [Accepted: 11/12/2013] [Indexed: 11/26/2022] Open
Abstract
The most common treatments for rheumatoid arthritis include nonsteroidal anti-inflammatory drugs (NSAIDs), corticosteroids, disease modifying antirheumatic drugs (DMARDs), and some biological agents. However, none of the treatments available is able to achieve the ultimate goal of treatment, that is, drug-free remission. This limitation has shifted the focus of treatment to delivery strategies with an ability to deliver the drugs into the synovial cavity in the proper dosage while mitigating side effects to other tissues. A number of approaches like microemulsions, microspheres, liposomes, microballoons, cocrystals, nanoemulsions, dendrimers, microsponges, and so forth, have been used for intrasynovial delivery of these drugs. Amongst these, liposomes have proven to be very effective for retaining the drug in the synovial cavity by virtue of their size and chemical composition. The fast clearance of intra-synovially administered drugs can be overcome by use of liposomes leading to increased uptake of drugs by the target synovial cells, which in turn reduces the exposure of nontarget sites and eliminates most of the undesirable effects associated with therapy. This review focuses on the use of liposomes in treatment of rheumatoid arthritis and summarizes data relating to the liposome formulations of various drugs. It also discusses emerging trends of this promising technology.
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28
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Shakeel F, Haq N, Alanazi F, Alsarra I. Effect of Oils and Surfactants on Physicochemical Characterization and in Vitro Dissolution of Glibenclamide From Self-Emulsifying Formulations. J Drug Deliv Sci Technol 2014. [DOI: 10.1016/s1773-2247(14)50011-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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29
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Nesamony J, Shah IS, Kalra A, Jung R. Nebulized oil-in-water nanoemulsion mists for pulmonary delivery: development, physico-chemical characterization and in vitro evaluation. Drug Dev Ind Pharm 2013; 40:1253-63. [PMID: 23837519 DOI: 10.3109/03639045.2013.814065] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
CONTEXT This study presents novel nanostructured oil-in-water (o/w) mists based on self-nanoemulsifying (SNE) mixtures capable of delivering poorly water-soluble drugs into the lungs. OBJECTIVE Formulation development of an o/w nanoemulsion (NE) capable of being nebulized for pulmonary delivery of poorly water-soluble drugs. MATERIALS AND METHODS SNE mixtures were prepared and evaluated using Tween 80 and Cremophor RH 40 as surfactants; Transcutol P, Capryol 90 and PEG 400 as cosurfactants; and Labrafac Lipophile Wl 1349 (a medium-chain triglyceride) as an oil. Liquid NEs were analyzed by light scattering, zeta potential, transmission electron microscopy (TEM) and in vitro drug release studies. The aqueous NE was nebulized and assessed by light scattering and TEM. The formulation was aseptically filtered and the sterility validated. In vitro cytotoxicity of the formulations was tested in NIH 3T3 cells. The capability of the formulation to deliver a poorly water-soluble drug was determined using ibuprofen. RESULTS Ibuprofen was found to be stable in the NEs. The formulations were neutrally charged with a droplet size of about 20 nm. TEM images displayed 100 nm oil droplets. The aseptic filtration method produced sterile NE. The nebulized mist revealed properties ideal for pulmonary delivery. The biocompatible aerosol has a nanostructure consisting of several oil nanodroplets enclosed within each water drop. Solubility and in vitro drug release studies showed successful incorporation and release of ibuprofen. CONCLUSION The developed formulation could be used as an inhalation for delivering material possessing poor water solubility into the lungs.
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Affiliation(s)
- Jerry Nesamony
- Department of Pharmacy Practice, College of Pharmacy and Pharmaceutical Sciences, University of Toledo , Toledo, OH , USA
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30
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Ajazuddin, Alexander A, Khichariya A, Gupta S, Patel RJ, Giri TK, Tripathi DK. Recent expansions in an emergent novel drug delivery technology: Emulgel. J Control Release 2013; 171:122-32. [PMID: 23831051 DOI: 10.1016/j.jconrel.2013.06.030] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Revised: 06/20/2013] [Accepted: 06/24/2013] [Indexed: 10/26/2022]
Abstract
Emulgel is an emerging topical drug delivery system to which if more effort is paid towards its formulation & development with more number of topically effective drugs it will prove a boon for derma care & cosmetology. Emulgels are either emulsion of oil in water or water in oil type, which is gelled by mixing it with gelling agent. Incorporation of emulsion into gel increases its stability & makes it a dual control release system. Due to lack of excess oily bases & insoluble excipients, it shows better drug release as compared to other topical drug delivery system. Presence of gel phase makes it a non greasy & favors good patient compliance. These reviews give knowledge about Emulgel including its properties, advantages, formulation considerations, and its recent advances in research field. All factors such as selection of gelling agent, oil agent, emulsifiers influencing the stability and efficacy of Emulgel are discussed. All justifications are described in accordance with the research work carried out by various scientists. These brief reviews on formulation method have been included. Current research works that carried out on Emulgel are also discussed and highlighted the wide utility of Emulgel in topical drug delivery system. After the vast study, it can be concluded that the Emulgels appear better & effective drug delivery system as compared to other topical drug delivery system. The comprehensive analysis of rheological and release properties will provide an insight into the potential usage of Emulgel formulation as drug delivery system.
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Affiliation(s)
- Ajazuddin
- Rungta College of Pharmaceutical Sciences and Research, Kohka-Kurud Road, Bhilai, Chhattisgarh, India.
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31
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León I, Millán J, Cocinero EJ, Lesarri A, Fernández JA. Transition from Planar to Nonplanar Hydrogen Bond Networks in the Solvation of Aromatic Dimers: Propofol2-(H2O)2–4. J Phys Chem A 2013; 117:3396-404. [DOI: 10.1021/jp401386y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Iker León
- Department of Physical Chemistry,
Faculty of Science and Technology, University of the Basque Country (UPV/EHU), B. Sarriena s/n, Leioa 48940,
Spain
| | - Judith Millán
- Department of Chemistry,
Faculty
of Science, Agroalimentary Studies and Informatics, University of La Rioja, Madre de Dios, 51, Logroño 26006,
Spain
| | - Emilio J. Cocinero
- Department of Physical Chemistry,
Faculty of Science and Technology, University of the Basque Country (UPV/EHU), B. Sarriena s/n, Leioa 48940,
Spain
| | - Alberto Lesarri
- Department of Physical
Chemistry
and Inorganic Chemistry, Faculty of Science, University of Valladolid, E-47011 Valladolid, Spain
| | - José A. Fernández
- Department of Physical Chemistry,
Faculty of Science and Technology, University of the Basque Country (UPV/EHU), B. Sarriena s/n, Leioa 48940,
Spain
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32
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Gibaud S, Attivi D. Microemulsions for oral administration and their therapeutic applications. Expert Opin Drug Deliv 2012; 9:937-51. [DOI: 10.1517/17425247.2012.694865] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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