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Hipólito-Nájera AR, del Rosario Moya-Hernández M, Rojas-Hernández A, Gómez-Balderas R. Interaction of indomethacin–cyclodextrins in water by UV–Vis and ITC. J INCL PHENOM MACRO 2019. [DOI: 10.1007/s10847-019-00915-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Jambhekar SS, Breen P. Cyclodextrins in pharmaceutical formulations I: structure and physicochemical properties, formation of complexes, and types of complex. Drug Discov Today 2016; 21:356-62. [DOI: 10.1016/j.drudis.2015.11.017] [Citation(s) in RCA: 169] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 11/17/2015] [Accepted: 11/30/2015] [Indexed: 10/22/2022]
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Cyclodextrins in pharmaceutical formulations II: solubilization, binding constant, and complexation efficiency. Drug Discov Today 2015; 21:363-8. [PMID: 26687191 DOI: 10.1016/j.drudis.2015.11.016] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 11/17/2015] [Accepted: 11/30/2015] [Indexed: 11/22/2022]
Abstract
Cyclodextrins are cyclic oligosaccharides that have been recognized as pharmaceutical adjuvants for the past 20 years. The molecular structure of these glucose derivatives, which approximates a truncated cone, bucket, or torus, generates a hydrophilic exterior surface and a nonpolar interior cavity. Cyclodextrins can interact with appropriately sized drug molecules to yield an inclusion complex. These noncovalent inclusion complexes offer a variety of advantages over noncomplexed forms of a drug. Cyclodextrins are carbohydrates that are primarily used to enhance the aqueous solubility, physical chemical stability, and bioavailability of drugs. Their other applications include preventing drug-drug interactions, converting liquid drugs into microcrystalline powders, minimizing gastrointestinal and ocular irritation, and reducing or eliminating unpleasant taste and smell. Here, we focus on the solubilization of drugs by complexation, and discuss the determination and significance of binding constants for cyclodextrin complexes, and the determination of complexation efficiency and factors that influence it. We also make some general observations on cyclodextrin complexation and the use of cyclodextrins in solid, as well as parenteral, dosage forms.
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Comparison of spray drying, electroblowing and electrospinning for preparation of Eudragit E and itraconazole solid dispersions. Int J Pharm 2015; 494:23-30. [DOI: 10.1016/j.ijpharm.2015.07.076] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Revised: 07/27/2015] [Accepted: 07/29/2015] [Indexed: 11/23/2022]
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Maity B, Chatterjee A, Ahmed SA, Seth D. Supramolecular interactions of nonsteroidal anti-inflammatory drug in nanochannels of molecular containers: a spectroscopic, thermogravimetric and microscopic investigation. Chemphyschem 2014; 15:3502-14. [PMID: 25146319 DOI: 10.1002/cphc.201402419] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Indexed: 11/11/2022]
Abstract
Supramolecular host-guest complexation between the nonsteroidal anti-inflammatory drug indomethacin (IMC) and molecular containers were investigated. The weakly fluorescent drug molecule becomes highly fluorescent on complexation with different molecular containers, and time-resolved fluorescence emission spectroscopy reveals that the lifetime components of IMC significantly increase in the presence of molecular containers, compared with the lifetimes in neat water. The respective solid host-guest complexes were synthesised and characterised by Fourier transform infrared and (1) H nuclear magnetic resonance spectroscopic analysis. Microscopy techniques were used to analyse modifications of the surface morphology, owing to the formation of supramolecular complexes. The effect of the molecular container on the optical properties of IMC has also been investigated to determine the effect of nanochannels of different size and structure.
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Affiliation(s)
- Banibrata Maity
- Department of Chemistry, Indian Institute of Technology Patna, Patliputra Colony, Patna 800013, Bihar (India), Fax: 91-612-2277383
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Al-Hamidi H, Obeidat WM, Nokhodchi A. The dissolution enhancement of piroxicam in its physical mixtures and solid dispersion formulations using gluconolactone and glucosamine hydrochloride as potential carriers. Pharm Dev Technol 2014; 20:74-83. [PMID: 24392858 DOI: 10.3109/10837450.2013.871029] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The solid dispersion technique is one of the most effective methods for improving the dissolution rate of poorly water-soluble drugs; however this is reliant on a suitable carrier and solvent being selected. The work presented explores amino sugars (d-glucosamine HCl and d-gluconolactone) as potential hydrophilic carriers to improve dissolution rate of a poorly water-soluble drug, piroxicam, from physical mixtures and solid dispersion formulations. Solid dispersions of the drug and carrier were prepared using different ratios by the conventional solvent evaporation method. Acetone was used as solvent in the preparation of solid dispersions. Physical mixtures of piroxicam and carrier were also prepared for comparison. The properties of all solid dispersions and physical mixtures were studied using a dissolution tester, Fourier transform infrared, XRD, SEM and differential scanning calorimetry. These results showed that the presence of glucosamine or gluconolactone can increase dissolution rate of piroxicam compared to pure piroxicam. Glucosamine or Gluconolactone could be used as carrier in solid dispersion formulations and physical mixtures to enhance the dissolution rate. Solid state studies showed that no significant changes occurred for piroxicam in physical mixtures and solid dispersion.
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Affiliation(s)
- Hiba Al-Hamidi
- Medway School of Pharmacy, University of Kent , Kent , UK
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Jambhekar SS, Breen PJ. Drug dissolution: significance of physicochemical properties and physiological conditions. Drug Discov Today 2013; 18:1173-84. [DOI: 10.1016/j.drudis.2013.08.013] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2013] [Revised: 08/01/2013] [Accepted: 08/19/2013] [Indexed: 11/24/2022]
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Supramolecular assemblies of Al3+ complexes with vitamin D3 (cholecalciferol) and phenothiazine. Encapsulation and complexation studies in β-cyclodextrin. J INCL PHENOM MACRO 2012. [DOI: 10.1007/s10847-012-0154-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Barzegar-Jalali M, Valizadeh H, Shadbad MRS, Adibkia K, Mohammadi G, Farahani A, Arash Z, Nokhodchi A. Cogrinding as an approach to enhance dissolution rate of a poorly water-soluble drug (gliclazide). POWDER TECHNOL 2010. [DOI: 10.1016/j.powtec.2009.09.008] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Salústio P, Feio G, Figueirinhas J, Pinto J, Cabral Marques H. The influence of the preparation methods on the inclusion of model drugs in a β-cyclodextrin cavity. Eur J Pharm Biopharm 2009; 71:377-86. [DOI: 10.1016/j.ejpb.2008.09.027] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2007] [Revised: 08/06/2008] [Accepted: 09/30/2008] [Indexed: 11/26/2022]
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Umeda Y, Fukami T, Furuishi T, Suzuki T, Makimura M, Tomono K. Molecular Complex Consisting of Two Typical External Medicines: Intermolecular Interaction between Indomethacin and Lidocaine. Chem Pharm Bull (Tokyo) 2007; 55:832-6. [PMID: 17473482 DOI: 10.1248/cpb.55.832] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The molecular complex formed between indomethacin (IDM) and lidocaine (LDC), which are typical external medicines, was studied. A thermal analysis, microscopic study and phase solubility technique suggested intermolecular interaction between IDM and LDC. The phase solubility profiles with IDM and LDC were classified as A(L)-type, indicating the formation of a 1 : 1 stoichiometric molecular complex. The apparent stability constant (K(S)), calculated from the slope and the intercept, was 4478.9 M(-1). A molecular ion peak was detected at 592.2 (m/z) from fast-atom bombardment-MS measurements, which was in accordance with the sum of the molecular weight for IDM (M(W): 357.81) and LDC (M(W): 234.38). The changes of IR spectra in the C=O stretching region showed that each intact hydrogen bond network was collapsed in the IDM-LDC system and strong interaction between IDM and LDC formed after their kneading. From the (1)H-NMR analyses, it was estimated that the dominant interactive site was the IDM carboxylic acid group which associated with the LDC diethyl amino group non-covalently.
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Affiliation(s)
- Yukiko Umeda
- Department of Pharmacy, Nihon University, Itabashi Hospital, 30-1 Ohyaguchi, Tokyo 173-8610, Japan
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Jambhekar S, Casella R, Maher T. The physicochemical characteristics and bioavailability of indomethacin from β-cyclodextrin, hydroxyethyl-β-cyclodextrin, and hydroxypropyl-β-cyclodextrin complexes. Int J Pharm 2004; 270:149-66. [PMID: 14726131 DOI: 10.1016/j.ijpharm.2003.10.012] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In an effort to improve the bioavailability of the insoluble drug indomethacin, three complexes were prepared with indomethacin and the soluble complexing agents beta-, hydroxyethyl-beta-, and hydroxypropyl-beta-cyclodextrin. The indomethacin content was similar among the complexes (P</=0.05). To confirm complex formation, each complex was characterized by ultraviolet, infrared, nuclear-magnetic resonance, powder X-ray diffraction, and differential-scanning calorimetry techniques. Powder diffraction studies show the beta-cyclodextrin complex was polycrystalline, and the hydroxyethyl- and hydroxypropyl-beta-cyclodextrin complexes were amorphous. Phase-solubility analysis confirmed the formation of complexes and suggested the three complexes were bound similarly. Solubility studies show complexation increased indomethacin solubility, and the hydroxyethyl- and hydroxypropyl-beta-cyclodextrin complexes were more soluble than the beta-cyclodextrin complex in 0.1 N hydrochloric acid and distilled water. Dosage forms were prepared by encapsulating the complexes without the addition of excipients. Dissolution studies show the encapsulated beta- and hydroxyethyl-beta-cyclodextrin complexes had superior dissolution when compared to the hydroxypropyl-beta-cyclodextrin and Indocin (50 mg) capsules. Bioavailability studies were performed by administering the indomethacin complex or Indocin capsules to male-albino, New Zealand rabbits. Indomethacin plasma-time concentration data fit best to a compartment-independent model for all capsule formulations. Bioavailability comparisons by ANOVA show no significant difference (P</=0.10) in the peak-plasma time and peak concentration among the capsule formulations. The area-under-the-curve for the beta-cyclodextrin complex capsules was found to be significantly higher (P</=0.10) than all other capsule formulations. In conclusion, the bioavailabilty of indomethacin was improved by complexation with only beta-cyclodextrin. No correlations were found among the bioavailability, solubility, and dissolution results.
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Affiliation(s)
- Sunil Jambhekar
- Department of Pharmaceutical Sciences, Massachusetts College of Pharmacy and Health Sciences, 179 Longwood Avenue, Boston, MA 02115, USA
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Watanabe T, Wakiyama N, Usui F, Ikeda M, Isobe T, Senna M. Stability of amorphous indomethacin compounded with silica. Int J Pharm 2001; 226:81-91. [PMID: 11532573 DOI: 10.1016/s0378-5173(01)00776-1] [Citation(s) in RCA: 111] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The stability of indomethacin (IM) compounded with SiO(2) either by co-grinding or by melt-quenching was examined by recrystallization kinetics under the conditions 30 degrees C and 11% relative humidity. A decrease of the recrystallization rate with and without an appreciable induction period was observed in both compounds. Higher stability of amorphous IM compounded with SiO(2) was attained by prolonged co-grinding than by melt-quenching. This was explained by the stronger chemical interaction at the interface between IM and SiO(2) by co-grinding, as revealed by (29)Si and (13)C solid state NMR. Incomplete co-grinding with the rest of the crystalline state, however, made the amorphous state appreciably unstable, since the remaining crystallites serve as seeds for recrystallization.
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Affiliation(s)
- T Watanabe
- Product Development Laboratories, Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan.
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Casella R, Williams D, Jambhekar S. Solid-state β-cyclodextrin complexes containing indomethacin, ammonia and water. II. Solubility studies. Int J Pharm 1998. [DOI: 10.1016/s0378-5173(98)00003-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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