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Sulistiawati S, Kristina Enggi C, Wiyulanda Iskandar I, Rachmad Saputra R, Sartini S, Rifai Y, Rahman L, Aswad M, Dian Permana A. Bioavailability enhancement of sildenafil citrate via hydrogel-forming microneedle strategy in combination with cyclodextrin complexation. Int J Pharm 2024; 655:124053. [PMID: 38537922 DOI: 10.1016/j.ijpharm.2024.124053] [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: 11/06/2023] [Revised: 03/03/2024] [Accepted: 03/25/2024] [Indexed: 04/14/2024]
Abstract
Sildenafil citrate (SIL) as a first-line treatment for erectile dysfunction is currently reported to have poor solubility and bioavailability. Moreover, SIL undergoes first-pass metabolism when taken orally and its injection can lead to discomfort. In this study, we introduce a novel transdermal delivery system that integrates hydrogel-forming microneedles with the inclusion complex tablet reservoir. The hydrogel-forming microneedle was prepared from a mixture of polymers and crosslinkers through a crosslinking process. Importantly, the formulations showed high swelling capacity (>400 %) and exhibited adequate mechanical and penetration properties (needle height reduction < 10 %), penetrating up to five layers of Parafilm® M (assessed to reach the dermis layer). Furthermore, to improve the solubility of SIL in the reservoir, the SIL was pre-complexed with β-cyclodextrin. Molecular docking analysis showed that SIL was successfully encapsulated into the β-cyclodextrin cavity and was the most suitable conformation compared to other CD derivatives. Moreover, to maximize SIL delivery, sodium starch glycolate was also added to the reservoir formulation. As a proof of concept, in vivo studies demonstrated the effectiveness of this concept, resulting in a significant increase in AUC (area under the curve) compared to that obtained after administration of pure SIL oral suspension, inclusion complex, and Viagra® with relative bioavailability > 100 %. Therefore, the approach developed in this study could potentially increase the efficacy of SIL in treating erectile dysfunction by being non-invasive, safe, avoiding first-pass metabolism, and increasing drug bioavailability.
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Affiliation(s)
| | | | | | - Rizki Rachmad Saputra
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Palangka Raya, Central Kalimantan 73111, Indonesia
| | - Sartini Sartini
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia
| | - Yusnita Rifai
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia
| | - Latifah Rahman
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia
| | - Muhammad Aswad
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia
| | - Andi Dian Permana
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia.
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Botan MVG, da Silva JB, Bruschi ML. Development of nanostructured environmentally responsive system containing hydroxypropyl methylcellulose for nose-to-brain administration of meloxicam. Int J Biol Macromol 2024; 262:130015. [PMID: 38331066 DOI: 10.1016/j.ijbiomac.2024.130015] [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: 11/12/2023] [Revised: 01/23/2024] [Accepted: 02/05/2024] [Indexed: 02/10/2024]
Abstract
The intranasal administration of drugs using environmentally responsive formulations, employing a combination of hydroxypropyl methylcellulose (HPMC) and poloxamer 407 (P407), can result in release systems that may assist in the treatment of neurological diseases. Meloxicam, considered a potential adjuvant in the treatment of Alzheimer's disease, could be used in these platforms. The aim of this work was to develop a mucoadhesive, thermoresponsive, and nanostructured system containing HPMC for nose-to-brain administration of meloxicam. The initially selected systems were investigated for their rheological, mechanical, and micellar size characteristics. The systems were dilatant at 25 °C and pseudoplastic with a yield value at 37 °C, showing viscoelastic properties at both temperatures. The platform containing HPMC (0.1%, w/w) and P407 (17.5%, w/w) was selected and demonstrated good mucoadhesive properties, along with an appropriate in vitro release profile. HPMC could form a binary system with P407, displaying superior mucoadhesive and thermoresponsive properties for nose-to-brain meloxicam administration, indicating that the selected formulation is worthy of clinical studies.
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Affiliation(s)
- Maria Vitoria Gouveia Botan
- Laboratory of Research and Development of Drug Delivery Systems, Postgraduate Program in Pharmaceutical Sciences, Department of Pharmacy, State University of Maringa, Av. Colombo 5790, 87020-900 Maringa, Parana, Brazil
| | - Jéssica Bassi da Silva
- Laboratory of Research and Development of Drug Delivery Systems, Postgraduate Program in Pharmaceutical Sciences, Department of Pharmacy, State University of Maringa, Av. Colombo 5790, 87020-900 Maringa, Parana, Brazil
| | - Marcos Luciano Bruschi
- Laboratory of Research and Development of Drug Delivery Systems, Postgraduate Program in Pharmaceutical Sciences, Department of Pharmacy, State University of Maringa, Av. Colombo 5790, 87020-900 Maringa, Parana, Brazil.
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3
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Alagusundaram M, Jain NK, Begum MY, Parameswari SA, Nelson VK, Bayan MF, Chandrasekaran B. Development and Characterization of Gel-Based Buccoadhesive Bilayer Formulation of Nifedipine. Gels 2023; 9:688. [PMID: 37754369 PMCID: PMC10530715 DOI: 10.3390/gels9090688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 08/20/2023] [Accepted: 08/23/2023] [Indexed: 09/28/2023] Open
Abstract
A promising controlled drug delivery system has been developed based on polymeric buccoadhesive bilayered formulation that uses a drug-free backing layer and a polymeric hydrophilic gel buccoadhesive core layer containing nifedipine. The DSC thermogravimetric analysis confirms the drug's entrapment in the gel layer and reveals no evidence of a potential interaction. Various ratios of bioadhesive polymers, including HPMC K100, PVP K30, SCMC, and CP 934, were combined with EC as an impermeable backing layer to ensure unidirectional drug release towards the buccal mucosa. The polymeric compositions of hydrophilic gel-natured HPMC, SCMC, and CP formed a matrix layer by surrounding the core nifedipine during compression. Preformulation studies were performed for all of the ingredients in order to evaluate their physical and flow characteristics. Ex vivo buccoadhesive strength, surface pH, swelling index, in vitro and in vivo drug release, and ex vivo permeation investigations were performed to evaluate the produced gel-based system. Rapid temperature variations had no appreciable impact on the substance's physical properties, pharmacological content, or buccoadhesive strength during stability testing using actual human saliva. It was clear from a histological examination of the ex vivo mucosa that the developed system did not cause any irritation or inflammation at the site of administration. The formulation NT5 was the best one, with a correlation coefficient of 0.9966. The in vitro and in vivo drug release profiles were well correlated, and they mimic the in vitro drug release pattern via the biological membrane. Thus, the developed gel-based formulation was found to be novel, stable, and useful for the targeted delivery of nifedipine.
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Affiliation(s)
- M. Alagusundaram
- Department of Pharmaceutics, School of Pharmacy, ITM University, Gwalior 474001, Madhya Pradesh, India
| | - Nem Kumar Jain
- Department of Pharmacology, School of Pharmacy, ITM University, Gwalior 474001, Madhya Pradesh, India;
| | - M. Yasmin Begum
- Department of Pharmaceutics, College of Pharmacy, King Khalid University, Abha 61421, Saudi Arabia
| | - S. Angala Parameswari
- Department of Pharmaceutical Analysis, Jagan’s Institute of Pharmaceutical Sciences, Nellore 524346, Andhra Pradesh, India;
| | - Vinod Kumar Nelson
- Department of Pharmaceutical Chemistry, Raghavendra Institute of Pharmaceutical Education and Research, Anantapuramu 515721, Andhra Pradesh, India;
| | - Mohammad F. Bayan
- Faculty of Pharmacy, Philadelphia University, P.O. Box 1, Amman 19392, Jordan; (M.F.B.); (B.C.)
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Microenvironmental pH Modification in Buccal/Sublingual Dosage Forms for Systemic Drug Delivery. Pharmaceutics 2023; 15:pharmaceutics15020637. [PMID: 36839959 PMCID: PMC9961113 DOI: 10.3390/pharmaceutics15020637] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/27/2023] [Accepted: 02/09/2023] [Indexed: 02/16/2023] Open
Abstract
Many drug candidates are poorly water-soluble. Microenvironmental pH (pHM) modification in buccal/sublingual dosage forms has attracted increasing interest as a promising pharmaceutical strategy to enhance the oral mucosal absorption of drugs with pH-dependent solubility. Optimizing drug absorption at the oral mucosa using pHM modification is considered to be a compromise between drug solubility and drug lipophilicity (Log D)/permeation. To create a desired pHM around formulations during the dissolution process, a suitable amount of pH modifiers should be added in the formulations, and the appropriate methods of pHM measurement are required. Despite pHM modification having been demonstrated to be effective in enhancing the oral mucosal absorption of drugs, some potential risks, such as oral mucosal irritation and teeth erosion caused by the pH modifiers, should not been neglected during the formulation design process. This review aims to provide a short introduction to the pHM modification concept in buccal/sublingual dosage forms, the properties of saliva related to pHM modification, as well as suitable drug candidates and pH modifiers for pHM modifying buccal/sublingual formulations. Additionally, the methods of pHM measurement, pHM modification methods and the corresponding challenges are summarized in the present review.
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Kataria D, Zafar A, Ali J, Khatoon K, Khan S, Imam SS, Yasir M, Ali A. Formulation of Lipid-Based Nanocarriers of Lacidipine for Improvement of Oral Delivery: Box-Behnken Design Optimization, In Vitro, Ex Vivo, and Preclinical Assessment. Assay Drug Dev Technol 2022; 20:5-21. [DOI: 10.1089/adt.2021.084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Dheeraj Kataria
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
| | - Ameeduzzafar Zafar
- Department of Pharmaceutics, College of Pharmacy, Jouf University, Sakaka, Al-Jouf, Saudi Arabia
| | - Javed Ali
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
| | - Karishma Khatoon
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
| | - Saba Khan
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
| | - Syed Sarim Imam
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Mohd Yasir
- Department of Pharmacy, College of Health Science, Arsi University, Asella, Ethiopia
| | - Asgar Ali
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
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Intranasal delivery of chitosan decorated nanostructured lipid carriers of Buspirone for brain targeting: Formulation development, optimization and In-Vivo preclinical evaluation. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2021.102939] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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He S, Jacobsen J, Nielsen CU, Genina N, Østergaard J, Mu H. Exploration of in vitro drug release testing methods for saquinavir microenvironmental pH modifying buccal films. Eur J Pharm Sci 2021; 163:105867. [PMID: 33951482 DOI: 10.1016/j.ejps.2021.105867] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 04/22/2021] [Accepted: 04/26/2021] [Indexed: 11/26/2022]
Abstract
Buccal films containing a pH modifying excipient may be able to increase bioavailability of drugs with pH-dependent solubility such as saquinavir. Access to suitable in vitro drug release testing methods may facilitate buccal formulation development. This study aimed to explore two release testing methods for characterising buccal films and to elucidate the relationship between microenvironmental pH (pHM, i.e. the pH around the swelling films) and saquinavir release. The Franz diffusion cell method was applicable to investigate the effect of hydroxypropyl methylcellulose (HPMC) grade on saquinavir release. Films containing HPMC K3 LV had a faster saquinavir release than films containing HPMC K100 LV. A UV/Vis imaging method was developed to visualise saquinavir release and pHM changes during the initial dissolution. Within 5 min, the pHM decreased from 6.8 to around 5.4 for HPMC K100 LV-based films containing 11.1 % or 16.6 % (w/w) malic acid. Subsequently, the pHM increased due to increasing concentrations of saquinavir. An increase in malic acid content led to a faster saquinavir release. The combination of methods may be broadly applicable for excipient screening in development of buccal formulations. The imaging approach holds promise for characterizing other pH modifying formulation principles.
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Affiliation(s)
- Shaolong He
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Jette Jacobsen
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Carsten Uhd Nielsen
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Natalja Genina
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Jesper Østergaard
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark.
| | - Huiling Mu
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
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Eltanany BM, Abd El-Hadi HR, Zaazaa HE, Eissa MS. In vitro analytical dissolution profiling of antiemetic delayed release tablets in two different dissolution media: Validated spectrophotometric methods versus reported HPLC. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 246:119013. [PMID: 33049467 DOI: 10.1016/j.saa.2020.119013] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 07/11/2020] [Accepted: 09/23/2020] [Indexed: 06/11/2023]
Abstract
The combination of pyridoxine HCl (PYR) and doxylamine succinate (DOX) was proved to be effective and safe acting as the first line of pregnancy medication for vomiting and nausea under a trade name; Vomibreak® delayed release tablets. This combination has been available in the Egyptian market since 2016. Dissolution study is a meaningful tool that represents a predictor of output because the rate controlling steps in any drug's absorption is the rate of discharging from its medicinal formulation. Generally, the dissolution test of all delayed release tablets is operated at two stages: first the acid stage then the buffer stage. In our work, the acid stage was performed in 0.1 N hydrochloric acid (0.1 M HCl) and the buffer one was in 0.2 M sodium phosphate buffer (0.2 M Na-PB), pH = 6.8, according to FDA guidelines. In present work, for the first time, this binary mixture was quantitatively determined by applying four spectrophotometric methods. PYR was directly determined by zero order spectra method (D0) at 291.0 nm in the range 2.0-26.0 μg/mL in the acid stage and at 325.0 nm in the range 5.0-35.0 μg/mL in the buffer stage, where DOX show no interference in both cases. However, DOX was determined by three methods, namely, Dual wavelength (DW), Ratio difference (RD) and Derivative ratio (DD1). DD1 was the chosen method for determination of DOX in the two-phase dissolution study of Vomibreak® tablets at 249.0 nm in the range 2.0-44.0 μg/mL and 273.0 nm in the range 5.0-100.0 μg/mL in acid and buffer phases, respectively. All of the suggested methods were tested in compliance with ICH guidelines, where all methods were found to be reliable, reproducible, and selective. A statistical comparison was computed between two analytical techniques of critical importance in the development of two media dissolution profile: proposed UV- spectrophotometric and reported HPLC methods where no significant difference was found. Difference (ƒ1) and similarity (ƒ2) factors were calculated for PYR and DOX and shown that ƒ1 was 1.490 and 1.654 and ƒ2 was 94.431 and 92.396 for PYR and DOX, respectively.
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Affiliation(s)
- Basma M Eltanany
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, 11562 Kasr El-Aini St., Cairo, Egypt.
| | - Heidi R Abd El-Hadi
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Egyptian Russian University, Badr City, Cairo, Egypt
| | - Hala E Zaazaa
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, 11562 Kasr El-Aini St., Cairo, Egypt
| | - Maya S Eissa
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Egyptian Russian University, Badr City, Cairo, Egypt
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Buspirone loaded solid lipid nanoparticles for amplification of nose to brain efficacy: Formulation development, optimization by Box-Behnken design, in-vitro characterization and in-vivo biological evaluation. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2020.102164] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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10
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Abu El- Enin AS, Elbakry AM, El Hosary R, Fouad Lotfy MA, Yahia R. Formulation, development, in vivo pharmacokinetics and pharmacological efficacy evaluation of novel vaginal bioadhesive sustained core-in-cup salbutamol sulphate tablets for preterm labor. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.102076] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Kumar R, Sinha VR, Dahiya L, Singh G, Sarwal A. Impact of cyclodextrin derivatives on systemic release of duloxetine HCl via buccal route. Drug Dev Ind Pharm 2020; 46:931-945. [PMID: 32420753 DOI: 10.1080/03639045.2020.1764019] [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: 10/24/2022]
Abstract
Aim: The aim of this work was to develop buccoadhesive tablets for the systemic delivery of duloxetine HCl (DXT) using more soluble derivatives of β-cyclodextrin, i.e. hydroxypropyl-β-cyclodextrin (HPβCD) and sulfobutylether-β-cyclodextrin (SBEβCD) and to investigate enhanced cellular uptake of inclusion complexed drug.Materials and methods: Freeze dried and spray dried complexes of both cyclodextrin derivatives with DXT (1:1 molar) were prepared and characterized with DSC, FTIR, and PXRD techniques. C971 and PC, on the basis of swelling behavior, erosion and in vitro residence time, were selected for further study at different levels (-1, 0, +1) to optimize the formulation in terms of enhanced drug release and ex vivo permeation.Results: SBEβCD based complexes show more aqueous solubility of DXT (0.782 and 0.958 mM) and more complexation efficiency compared to HPβCD at 25 °C and 37 °C, respectively. Apparent stability constant was reported to be higher (1109.94 and 1693.25 M-1) for DXT-SBEβCD at 25 °C and 37 °C, respectively, than the corresponding values for DXT-HPβCD systems. Enhanced cellular uptake using fibroblast cells was revealed for complexed drug compared to free drug .Conclusion: Both cyclodextrin derivatives are able to enhance drug release and permeation in vitro and ex vivo.
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Affiliation(s)
- Rajiv Kumar
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
| | - V R Sinha
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
| | - Lalita Dahiya
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
| | - Gurpal Singh
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
| | - Amita Sarwal
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
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12
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El-Enin ASMA, Elbakry AM, Hosary RE, Lotfy MAF. Formulation, development, and in-vitro/ ex-vivo evaluation of vaginal bioadhesive salbutamol sulfate tablets for preterm labor. Pharm Dev Technol 2020; 25:989-998. [PMID: 32397780 DOI: 10.1080/10837450.2020.1767129] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Preterm labor is the main cause of death and serious illness of both infants and pregnant women in Africa and worldwide. Parenteral and oral salbutamol sulfate as a B2 antagonist has been used for the treatment of preterm labor. The study aims are to formulate salbutamol sulfate non-invasive vaginal bioadhesive tablets to avoid the side effects of conventional formulations. Full factorial design 41 ×31 ×21 was used for the preparation of 24 vaginal bioadhesive tablet formulations. The independent factors were polymer type (Carbopol 934, HPMC 4000, HEC, and PEG 6000), polymer to drug ratio (1:1, 2:1, and 3:1), and diluent (lactose and mannitol). Vaginal bioadhesive tablets were evaluated for residence time and time required for release 50% of salbutamol sulfate T50% as dependent variables. The formulations were evaluated in terms of drug content, mass variation, hardness, friability, swelling index, residence time, and in-vitro drug release. Results revealed that polymer and diluent types are the most significant factors in both residence time and T50%. A strong positive correlation (0.91) between in-vitro and ex-vivo permeation was observed, which predict the best in-vivo performance of salbutamol vaginal bioadhesive tablet. Thus, salbutamol sulfate vaginal bioadhesive tablets could be a successful remedy for preterm labor.
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Affiliation(s)
- Amal S M Abu El-Enin
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt.,Department of Pharmaceutics, Faculty of Pharmacy, Ahram Canadian University, Cairo, Egypt
| | - Asmaa M Elbakry
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt.,Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Heliopolis University, Cairo, Egypt
| | - Rania El Hosary
- Department of Pharmaceutics, National Organization of Drug Control and Research (NODCAR), Cairo, Egypt
| | - Marwa Ahmed Fouad Lotfy
- Department of Pharmaceutics, National Organization of Drug Control and Research (NODCAR), Cairo, Egypt
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Rashad AA, Nageeb El-Helaly S, Abd El Rehim RT, El-Gazayerly ON. Chronological Delivery of Antihypertensive Drugs in Bilayered Core-in-Cup Buccoadhesive Tablets: In Vitro and In Vivo Evaluation. AAPS PharmSciTech 2019; 21:21. [PMID: 31823090 DOI: 10.1208/s12249-019-1575-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 11/18/2019] [Indexed: 11/30/2022] Open
Abstract
Hypertension shows circadian blood pressure rhythms (day-night pattern) that urge the delivery of antihypertensive drugs at the right time in the desired levels. Thus, a bilayered core-in-cup buccoadhesive tablet was formulated that immediately releases olmesartan, to give a burst effect, and controls azelnidipine release, to prolong its therapeutic effect. The main challenge was the poor bioavailability of azelnidipine due to its poor aqueous solubility and first-pass effect. Hence, liquisolid compact buccoadhesive tablets were prepared to enhance solubility, dissolution profiles, and bypass the oral route. Two factorial designs were conducted to study the type and concentration effect of the mucoadhesive polymers on the dissolution and mucoadhesion of olmesartan and azelnidipine. Characterization studies were conducted regarding drug content, surface pH, water uptake, mucoadhesive strength, in vitro release, and ex vivo permeability. The core-in-cup olmesartan/azelnidipine buccoadhesive tablet showed similar release profile to the statistically optimized formulae of each drug. In vitro dissolution study showed enhanced release of azelnidipine than the directly compressed tablets, to comply with the regulatory standards of controlled release systems. In vivo pharmacokinetic study of olmesartan and azelnidipine conducted on human volunteers against Rezaltas® 10/8 mg tablet showed percentage relative bioavailability of 106.12 and 470.82%, respectively. Graphical Abstract.
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Murgia D, Angellotti G, D'Agostino F, De Caro V. Bioadhesive Matrix Tablets Loaded with Lipophilic Nanoparticles as Vehicles for Drugs for Periodontitis Treatment: Development and Characterization. Polymers (Basel) 2019; 11:E1801. [PMID: 31684081 PMCID: PMC6918209 DOI: 10.3390/polym11111801] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 10/29/2019] [Accepted: 10/30/2019] [Indexed: 12/12/2022] Open
Abstract
Periodontitis treatment is usually focused on the reduction or eradication of periodontal pathogens using antibiotics against anaerobic bacteria, such as metronidazole (MTR). Moreover, recently the correlation between periodontal diseases and overexpression of reactive oxygen species (ROS) led to the introduction of antioxidant biomolecules in therapy. In this work, bioadhesive buccal tablets, consisting of a hydrophilic matrix loaded with metronidazole and lipophilic nanoparticles as a vehicle of curcumin, were developed. Curcumin (CUR)-loaded nanostructured lipid carriers (NLC) were prepared using glycyrrhetic acid, hexadecanol, isopropyl palmitate and Tween®80 as a surfactant. As method, homogenization followed by high-frequency sonication was used. After dialysis, CUR-NLC dispersion was evaluated in terms of drug loading (DL, 2.2% w/w) and drug recovery (DR, 88% w/w). NLC, characterized by dynamic light scattering and scanning electron microscopy (SEM), exhibited a spherical shape, an average particle size of 121.6 nm and PDI and PZ values considered optimal for a colloidal nanoparticle dispersion indicating good stability of the system. Subsequently, a hydrophilic sponge was obtained by lyophilization of a gel based on trehalose, Natrosol and PVP-K90, loaded with CUR-NLC and MTR. By compression of the sponge, matrix tablets were obtained and characterized in term of porosity, swelling index, mucoadhesion and drugs release. The ability of the matrix tablets to release CUR and MTR when applied on buccal mucosa and the aptitude of actives to penetrate and/or permeate the tissue were evaluated. The data demonstrate the ability of NLC to promote the penetration of CUR into the lipophilic domains of the mucosal membrane, while MTR can penetrate and permeate the mucosal tissue, where it can perform a loco-regional antibacterial activity. These results strongly support the possibility of using this novel matrix tablet for delivering MTR together with CUR for topical treatment of periodontal diseases.
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Affiliation(s)
- Denise Murgia
- Dipartimento di Discipline Chirurgiche, Oncologiche e Stomatologiche, Università degli Studi di Palermo, 90127 Palermo, Italy.
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università degli Studi di Palermo, 90123 Palermo, Italy.
| | - Giuseppe Angellotti
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università degli Studi di Palermo, 90123 Palermo, Italy.
| | - Fabio D'Agostino
- Istituto per lo Studio degli Impatti Antropici e Sostenibilità dell'Ambiente Marino, Consiglio Nazionale delle Ricerche (IAS - CNR), Campobello di Mazara, 91021 Trapani, Italy.
| | - Viviana De Caro
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università degli Studi di Palermo, 90123 Palermo, Italy.
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Core-in-cup/liquisol dual tackling effect on azelnidipine buccoadhesive tablet micromeritics, in vitro release, and mucoadhesive strength. ACTA PHARMACEUTICA (ZAGREB, CROATIA) 2019; 69:381-398. [PMID: 31259736 DOI: 10.2478/acph-2019-0022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/30/2018] [Indexed: 01/19/2023]
Abstract
Reduced bioavailability of azelnidipine is related to its poor aqueous solubility and extensive first-pass metabolism, which hinder its efficacy. These problems were addressed by implementing (1) a liquisol technique for promoting the dissolution rate in a controlled-release manner and (2) a core-in-cup bucco-adhesive drug delivery system as an alternative to the oral route. A 33 factorial design was used to study the effects of polymer type (sodium carboxymethyl cellulose (CMC Na), chitosan, or Carbomer P940) concentration (5, 10 or 15 %) and preparation technique (simple mix, liquisol or wet granulation) on the dissolution and mucoadhesion of core-in-cup azelnidipine buccoadhesive tablets. Tablet micromeritics, swelling index, mucoadhesive strength and in vitro release were characterized. Statistical analyses of these factors show ed significant effects on the studied responses, where F#16 prepared by the liquisol technique and containing 15 % CMC Na was chosen with an overall desirability of 0.953.
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Al-Ani E, Martin C, Britland ST, Doudin K, Hill DJ. The effect of the source and the concentration of polymers on the release of chlorhexidine from mucoadhesive buccal tablets. Saudi Pharm J 2019; 27:756-766. [PMID: 31516318 PMCID: PMC6733786 DOI: 10.1016/j.jsps.2019.04.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 04/19/2019] [Indexed: 01/14/2023] Open
Abstract
In the current work, two groups of chlorhexidine mucoadhesive buccal tablets were prepared, using either rod or irregularly-shaped spherical particles of hydroxypropyl methylcellulose and different ratios of poloxamer 407 (P407). The tablets were designed to release the drug over two hours. Their physicochemical properties and drug release profiles were investigated. The impact on dry granulation, the ex-vivo mucoadhesion, the swelling index, the morphology of swollen tablets and the drug release kinetic were investigated. Drug-polymers chemical interaction was studied using Fourier Transforms Infrared Spectroscopy (FTIR) and differential scanning calorimetry (DSC). Due to different particle shapes, the preparation of dry granules required a 40 KN force for rod-shaped particles compared to 10 KN for the irregularly-shaped spherical particles. All formulations showed at least two-hours residence time using ex-vivo mucoadhesion. Statistically, there was no significant difference in the swelling index, drug release nor its kinetic for both groups. However, the microscopical morphology of the swollen tablet and the size of the pores were affected by particle shape. Increasing the ratio of P407 to 62.5% resulted in a pronounced increase in drug release from around 60% to >90% after two hours. Following the FTIR and DSC analyses, no chemical interaction was noted apart from the steric hindrance effect of P407, which was observed even with the physical mixtures.
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Affiliation(s)
- Enas Al-Ani
- School of Pharmacy, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton, UK.,Research Institute in Healthcare Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton, UK
| | - Claire Martin
- Department of Biological Sciences, Institute of Science and the Environment, University of Worcester, Worcester, UK
| | | | - Khalid Doudin
- Chemical Engineering and Applied Chemistry, Aston University, Birmingham, UK
| | - David J Hill
- Research Institute in Healthcare Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton, UK.,School of School of Biology, Chemistry and Forensic Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton, UK
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Di Prima G, Conigliaro A, De Caro V. Mucoadhesive Polymeric Films to Enhance Barbaloin Penetration Into Buccal Mucosa: a Novel Approach to Chemoprevention. AAPS PharmSciTech 2019; 20:18. [PMID: 30603884 DOI: 10.1208/s12249-018-1202-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 10/17/2018] [Indexed: 01/28/2023] Open
Abstract
Nowadays, chemoprevention by administering natural supplements is considered an attractive strategy to reverse, suppress, or prevent the evolution of premalignant oral lesions. In particular, Barbaloin exhibits anti-proliferative, anti-inflammatory, and anti-cancer properties, and it results useful in multi-therapy with classic chemotherapeutics. Therefore, in this work, mucoadhesive buccal films, as locoregional drug delivery system able to provide a targeted and efficient therapeutic delivery of Barbaloin, are proposed. Thus, Aloin extract-loaded Eudragit® RL100 or Eudragit® RS100-based buccal films were designed in order to obtain an easily self-administrable formulation capable of promoting Barbaloin penetration into buccal mucosa and assuring high patient compliance. Large amounts of extract (44%) were loaded into the polymer matrix and six formulations were prepared varying polymers and plasticizers ratios. For all formulations, physical form (thermogravimetric analysis-differential scanning calorimetry, TGA-DSC), swelling degree, mucoadhesiveness, drug release, and ability to promote drug penetration in mucosa have been investigated. After a sequential selection process, Eudragit RS 100-based film, with low PVP and high plasticizers amounts, emerged as the most promising. It results appropriately flexible, uniform in terms of weight, thickness and drug content, as well as characterized by suitable surface pH, good mucoadhesiveness, and low swelling degree. It displays a Higuchian drug release behavior up to 89% of Barbaloin released, thus demonstrating that diffusion through the matrix is the main release mechanism. Remarkable penetration enhancer properties of film were demonstrated by evidence of Barbaloin accumulation into buccal mucosa up to 10-fold higher than those obtained following administration of Aloin solution.
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UV-spectrophotometry versus HPLC–PDA for dual-drug dissolution profiling: which technique provides a closer step towards green biowaiver concept? Novel application on the recent FDA-approved mixture Aleve pm. CHEMICAL PAPERS 2018. [DOI: 10.1007/s11696-018-0580-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Goyal AK, Singh R, Chauhan G, Rath G. Non-invasive systemic drug delivery through mucosal routes. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2018; 46:539-551. [DOI: 10.1080/21691401.2018.1463230] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Amit K. Goyal
- Department of Pharmaceutics, ISF College of Pharmacy, Moga, India
| | - Ranjit Singh
- Department of Pharmaceutics, Shobhit University, Meerut, India
| | - Gaurav Chauhan
- Centre for Nanosciences, Indian Institute of Technology Kanpur, Kanpur, India
- Instituto Tecnologico y de Estudios Superiores de Monterrey, Sensors and Devices Research Group, School of Engineering and Sciences, Monterrey, Mexico
| | - Goutam Rath
- Department of Pharmaceutics, ISF College of Pharmacy, Moga, India
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Koradia H, Chaudhari K. Formulation of unidirectional buccal tablet of Mirtazapine: An in vitro and ex vivo evaluation. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2017.10.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Esim O, Savaser A, Ozkan C, Bayrak Z, Tas C, Ozkan Y. Effect of polymer type on characteristics of buccal tablets using factorial design. Saudi Pharm J 2018; 26:53-63. [PMID: 29379333 PMCID: PMC5783814 DOI: 10.1016/j.jsps.2017.10.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 10/24/2017] [Indexed: 11/22/2022] Open
Abstract
A two factor three level factorial design was used to investigate the effects of carbopol and cationic hydrophilic polymers which have a common use in buccal drug formulations. Statistical models with interaction terms were derived to evaluate influence of carbopol (X1) and chitosan (X2) on tablet disintegration (Y1) and dissolution (Y2), mechanical properties (Y3), swelling (Y4). Tablet disintegration studies were carried out using two different pH environments within buccal region pH limits and also two different commonly used dissolution methods for buccal tablets were also investigated to compare the effect of polymer type on dissolution. Polymer type and ratio affect the characteristics of the buccal tablets due to their different physicochemical behavior at buccal pH. Also significant variances between dissolution profiles for buccal tablets, using either USP Paddle or flow through cell methods were found. These results indicate that both polymer type and ratio as well as combination of them effects the drug behavior in different ways.
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Affiliation(s)
- O. Esim
- University of Health Sciences, Gulhane Campus, Department of Pharmaceutical Sciences, Etlik, Ankara, Turkey
| | - A. Savaser
- University of Health Sciences, Gulhane Campus, Department of Pharmaceutical Sciences, Etlik, Ankara, Turkey
| | - C.K. Ozkan
- University of Health Sciences, Gulhane Campus, Department of Pharmaceutical Sciences, Etlik, Ankara, Turkey
| | - Z. Bayrak
- Ministry of National Defense, Ankara, Turkey
| | - C. Tas
- University of Health Sciences, Gulhane Campus, Department of Pharmaceutical Sciences, Etlik, Ankara, Turkey
| | - Y. Ozkan
- University of Health Sciences, Gulhane Campus, Department of Pharmaceutical Sciences, Etlik, Ankara, Turkey
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Jug M, Hafner A, Lovrić J, Kregar ML, Pepić I, Vanić Ž, Cetina-Čižmek B, Filipović-Grčić J. An overview of in vitro dissolution/release methods for novel mucosal drug delivery systems. J Pharm Biomed Anal 2018; 147:350-366. [DOI: 10.1016/j.jpba.2017.06.072] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 06/19/2017] [Accepted: 06/19/2017] [Indexed: 01/12/2023]
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Fonseca-Santos B, Chorilli M. An overview of polymeric dosage forms in buccal drug delivery: State of art, design of formulations and their in vivo performance evaluation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017. [PMID: 29525088 DOI: 10.1016/j.msec.2017.12.022] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Owing to the ease of the administration, the oral cavity is an attractive site for the delivery of drugs. The main difficulty for administration via the buccal route is an effective physiological removal mechanism of the oral cavity that takes way the formulation from the buccal site and decreases the bioavailability of drugs. The use of mucoadhesive polymers in buccal drug delivery shows assessing buccal drug permeation and absorption, however some studies bring an in vivo performance. This review points to the use of polymers in the manufacture of drug delivery systems (hydrogels, films and tablets) and shows the results of their in vivo performance tests.
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Affiliation(s)
- Bruno Fonseca-Santos
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, 14800-903 Araraquara, São Paulo, Brazil.
| | - Marlus Chorilli
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, 14800-903 Araraquara, São Paulo, Brazil.
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Shehata MA, Fawaz EM, El-Rahman MK, Abdel-Moety EM. Double-Track Electrochemical Green Approach for Simultaneous Dissolution Profiling of Naproxen Sodium and Diphenhydramine Hydrochloride. J Pharm Biomed Anal 2017; 146:179-187. [DOI: 10.1016/j.jpba.2017.08.041] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 08/18/2017] [Accepted: 08/28/2017] [Indexed: 10/19/2022]
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De Caro V, Ajovalasit A, Sutera FM, Murgia D, Sabatino MA, Dispenza C. Development and Characterization of an Amorphous Solid Dispersion of Furosemide in the Form of a Sublingual Bioadhesive Film to Enhance Bioavailability. Pharmaceutics 2017; 9:E22. [PMID: 28672810 PMCID: PMC5620563 DOI: 10.3390/pharmaceutics9030022] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 06/17/2017] [Accepted: 06/19/2017] [Indexed: 11/16/2022] Open
Abstract
Administered by an oral route, Furosemide (FUR), a diuretic used in several edematous states and hypertension, presents bioavailability problems, reported as a consequence of an erratic gastrointestinal absorption due to various existing polymorphic forms and low and pH-dependent solubility. A mucoadhesive sublingual fast-dissolving FUR based film has been developed and evaluated in order to optimize the bioavailability of FUR by increasing solubility and guaranteeing a good dissolution reproducibility. The Differential Scanning Calorimetry (DSC) analyses confirmed that the film prepared using the solvent casting method entrapped FUR in the amorphous state. As a solid dispersion, FUR increases its solubility up to 28.36 mg/mL. Drug content, thickness, and weight uniformity of film were also evaluated. The measured Young's Modulus, yield strength, and relative elongation of break percentage (EB%) allowed for the classification of the drug-loaded film as an elastomer. Mucoadhesive strength tests showed that the force to detach film from mucosa grew exponentially with increasing contact time up to 7667 N/m². FUR was quickly discharged from the film following a trend well fitted with the Weibull kinetic model. When applied on sublingual mucosa, the new formulation produced a massive drug flux in the systemic compartment. Overall, the proposed sublingual film enhances drug solubility and absorption, allowing for the prediction of a rapid onset of action and reproducible bioavailability in its clinical application.
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Affiliation(s)
- Viviana De Caro
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università degli Studi di Palermo, Palermo, PA 90123, Italy.
| | - Alessia Ajovalasit
- Dipartimento dell'Innovazione Industriale e Digitale, Ingegneria Chimica, Gestionale, Informatica, Meccanica, Università degli Studi di Palermo, Palermo, PA 90128, Italy.
| | - Flavia Maria Sutera
- SiSaf Ltd, Innovation Centre, Northern Ireland Science Park, Queen's Island, Belfast BT3 9DT, UK.
| | - Denise Murgia
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università degli Studi di Palermo, Palermo, PA 90123, Italy.
| | - Maria Antonietta Sabatino
- Dipartimento dell'Innovazione Industriale e Digitale, Ingegneria Chimica, Gestionale, Informatica, Meccanica, Università degli Studi di Palermo, Palermo, PA 90128, Italy.
| | - Clelia Dispenza
- Dipartimento dell'Innovazione Industriale e Digitale, Ingegneria Chimica, Gestionale, Informatica, Meccanica, Università degli Studi di Palermo, Palermo, PA 90128, Italy.
- Consiglio Nazionale delle Ricerche, Istituto di Biofisica-UOP Palermo, Palermo, PA 90146, Italy.
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Russo E, Selmin F, Baldassari S, Gennari C, Caviglioli G, Cilurzo F, Minghetti P, Parodi B. A focus on mucoadhesive polymers and their application in buccal dosage forms. J Drug Deliv Sci Technol 2016. [DOI: 10.1016/j.jddst.2015.06.016] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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De Caro V, Scaturro AL, Di Prima G, Avellone G, Sutera FM, Di Fede O, Campisi G, Giannola LI. Aloin delivery on buccal mucosa: ex vivo studies and design of a new locoregional dosing system. Drug Dev Ind Pharm 2015; 41:1541-7. [PMID: 25311426 DOI: 10.3109/03639045.2014.971030] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
CONTEXT Chemoprevention of potential malignant disorders or cancerous lesions that affect oral mucosae requires extended duration of treatment. Locoregional delivery of natural products could represent a promising strategy for this purpose. OBJECTIVE To investigate the aptitude of aloin to permeate through, or accumulate in, the buccal mucosa and to develop a new prolonged oro-mucosal drug delivery system. MATERIALS AND METHODS Permeation/accumulation of aloin from Curacao Aloe (containing 50% barbaloin) was evaluated ex vivo, using porcine buccal mucosa as the most useful model to simulate human epithelium. Oro-mucosal matrix tablets were prepared by dispersing aloin (10% w/w) in Eudragit® RS 100 as, biocompatible, low permeable, pH-independent, and non-swelling polymer. The prepared tablets were evaluated for drug-polymer compatibility, weight variation, drug uniformity content, diameter, thickness, hardness, friability, swelling, mucoadhesive strength, and drug release. RESULTS Aloin has low tendency to cross buccal mucosa, permeation is marginal, and high drug amounts remain entrapped into the epithelium. Matrix tablets characteristics were in agreement with pharmacopoeial requirements. Drug release showed highly reproducible Higuchian profile. Delivery through matrix tablets promoted drug accumulation in the mucosal tissue. DISCUSSION AND CONCLUSION Following application of matrix tablets on porcine buccal mucosa, the amount of discharged drug recovered in the tissue should be sufficient to produce the desired effects, providing therapeutic drug levels directly at the site of action. Aloin-loaded tablets are valid candidates for prevention/treatment of potentially malignant disorders and oral cancer and could potentially lead to clinically relevant drug delivery system as coadjuvant of conventional chemotherapy/radiation therapy.
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Affiliation(s)
- Viviana De Caro
- a Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF) , Università degli Studi di Palermo , Palermo , Italy and
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Penalva R, Esparza I, Larraneta E, González-Navarro CJ, Gamazo C, Irache JM. Zein-Based Nanoparticles Improve the Oral Bioavailability of Resveratrol and Its Anti-inflammatory Effects in a Mouse Model of Endotoxic Shock. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:5603-5611. [PMID: 26027429 DOI: 10.1021/jf505694e] [Citation(s) in RCA: 134] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Resveratrol offers pleiotropic health benefits including a reported ability to inhibit lipopolysaccharide (LPS)-induced cytokine production. The aim of this work was to prepare, characterize, and evaluate a resveratrol nanoparticulate formulation based on zein. For this purpose, the oral bioavailability of the encapsulated polyphenol as well as its anti-inflammatory effects in a mouse model of endotoxic shock was studied. The resveratrol-loaded nanoparticles displayed a mean size of 307 ± 3 nm, with a negative zeta potential (-51.1 ± 1.55 mV), and a polyphenol loading of 80.2 ± 3.26 μg/mg. In vitro, the release of resveratrol from the nanoparticles was found to be pH independent and adjusted well to the Peppas-Sahlin kinetic model, suggesting a mechanism based on the combination of diffusion and erosion of the nanoparticle matrix. Pharmacokinetic studies demonstrated that zein-based nanoparticles provided high and prolonged plasma levels of the polyphenol for at least 48 h. The oral bioavailability of resveratrol when administered in these nanoparticles increased up to 50% (19.2-fold higher than for the control solution of the polyphenol). Furthermore, nanoparticles administered daily for 7 days at 15 mg/kg were able to diminish the endotoxic symptoms induced in mice by the intraperitoneal administration of LPS (i.e., hypothermia, piloerection, and stillness). In addition, serum tumor necrosis factor-alpha (TNF-α) levels were slightly lower (approximately 15%) than those observed in the control.
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Affiliation(s)
- Rebeca Penalva
- †Department of Pharmacy and Pharmaceutical Technology, ‡Department of Microbiology, and #Centre for Nutrition Research, University of Navarra, 31080 Pamplona, Spain
| | - Irene Esparza
- †Department of Pharmacy and Pharmaceutical Technology, ‡Department of Microbiology, and #Centre for Nutrition Research, University of Navarra, 31080 Pamplona, Spain
| | - Eneko Larraneta
- †Department of Pharmacy and Pharmaceutical Technology, ‡Department of Microbiology, and #Centre for Nutrition Research, University of Navarra, 31080 Pamplona, Spain
| | - Carlos J González-Navarro
- †Department of Pharmacy and Pharmaceutical Technology, ‡Department of Microbiology, and #Centre for Nutrition Research, University of Navarra, 31080 Pamplona, Spain
| | - Carlos Gamazo
- †Department of Pharmacy and Pharmaceutical Technology, ‡Department of Microbiology, and #Centre for Nutrition Research, University of Navarra, 31080 Pamplona, Spain
| | - Juan M Irache
- †Department of Pharmacy and Pharmaceutical Technology, ‡Department of Microbiology, and #Centre for Nutrition Research, University of Navarra, 31080 Pamplona, Spain
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Kassem MAA, ElMeshad AN, Fares AR. Lyophilized sustained release mucoadhesive chitosan sponges for buccal buspirone hydrochloride delivery: formulation and in vitro evaluation. AAPS PharmSciTech 2015; 16:537-47. [PMID: 25370025 PMCID: PMC4444631 DOI: 10.1208/s12249-014-0243-3] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 10/23/2014] [Indexed: 11/30/2022] Open
Abstract
This work aims to prepare sustained release buccal mucoadhesive lyophilized chitosan sponges of buspirone hydrochloride (BH) to improve its systemic bioavailability. Chitosan sponges were prepared using simple casting/freeze-drying technique according to 3(2) factorial design where chitosan grade was set at three levels (low, medium, and high molecular weight), and concentration of chitosan solution at three levels (0.5, 1, and 2%). Mucoadhesion force, ex vivo mucoadhesion time, percent BH released after 8 h (Q8h), and time for release of 50% BH (T50%) were chosen as dependent variables. Additional BH cup and core buccal chitosan sponge were prepared to achieve uni-directional BH release toward the buccal mucosa. Sponges were evaluated in terms of drug content, surface pH, scanning electron microscopy, swelling index, mucoadhesion strength, ex vivo mucoadhesion time, and in vitro drug release. Cup and core sponge (HCH 0.5E) were able to adhere to the buccal mucosa for 8 h. It showed Q8h of 68.89% and exhibited a uni-directional drug release profile following Higuchi diffusion model.
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Affiliation(s)
- Mohamed A. A. Kassem
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Kasr El Aini Street, Cairo, 11562 Egypt
| | - Aliaa N. ElMeshad
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Kasr El Aini Street, Cairo, 11562 Egypt
| | - Ahmed R. Fares
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Kasr El Aini Street, Cairo, 11562 Egypt
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