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Guru PR, Kar RK, Nayak AK, Mohapatra S. A comprehensive review on pharmaceutical uses of plant-derived biopolysaccharides. Int J Biol Macromol 2023; 233:123454. [PMID: 36709807 DOI: 10.1016/j.ijbiomac.2023.123454] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 01/22/2023] [Accepted: 01/24/2023] [Indexed: 01/27/2023]
Abstract
Biopolysaccharides extracted from plants are mainly photosynthetic byproducts found in leaves, pods, stems, fruits, grains, seeds, corms, rhizomes, roots, bark exudates, and other plant parts. Recently, these plant-derived biopolysaccharides have received a great deal of attention as pharmaceutical excipients in a range of different dosage forms because of several key advantages, such as widespread accessibility from nature as plant-based sources are readily available, sustainable production, availability of easy and cost-effective extraction methodologies, aqueous solubility, swelling capability in the aqueous medium, non-toxicity, biodegradability, etc. The current review presents a comprehensive overview of the uses of plant-derived biopolysaccharides as effective pharmaceutical excipients in the formulations of different kinds of dosage forms, for example gels, pastes, films, emulsions, suspensions, capsules, tablets, nanoparticles, microparticles, beads, buccal formulations, transdermal formulations, ocular formulations, nasal formulations, etc.
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Affiliation(s)
- Pravat Ranjan Guru
- Department of Pharmaceutics, Dadhichi College of Pharmacy, Vidya Vihar, Sundargram, Cuttack 754002, Odisha, India
| | - Rajat Kumar Kar
- Department of Pharmaceutics, Dadhichi College of Pharmacy, Vidya Vihar, Sundargram, Cuttack 754002, Odisha, India
| | - Amit Kumar Nayak
- Department of Pharmaceutics, Seemanta Institute of Pharmaceutical Sciences, Jharpokharia, Mayurbhanj 757086, Odisha, India.
| | - Snehamayee Mohapatra
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar 751003, Odisha, India.
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2
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Abd-Ellah HS, Mudududdla R, Carter GP, Baell JB. Design, Development, and Optimisation of Smart Linker Chemistry for Targeted Colonic Delivery-In Vitro Evaluation. Pharmaceutics 2023; 15. [PMID: 36678931 DOI: 10.3390/pharmaceutics15010303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/05/2023] [Accepted: 01/12/2023] [Indexed: 01/19/2023] Open
Abstract
Drug targeting is necessary to deliver drugs to a specific site of action at a rate dictated by therapeutic requirements. The pharmacological action of a drug can thereby be optimised while minimising adverse effects. Numerous colonic drug delivery systems have been developed to avoid such undesirable side effects; however, these systems lack site specificity, leaving room for further improvement. The objective of the present study was to explore the potential of amino-alkoxycarbonyloxymethyl (amino-AOCOM) ether prodrugs as a general approach for future colonic delivery. To circumvent inter- and intra-subject variabilities in enzyme activities, these prodrugs do not rely on enzymes but rather are activated via a pH-triggered intramolecular cyclisation−elimination reaction. As proof of concept, model compounds were synthesised and evaluated under various pH conditions, simulating various regions of the gastrointestinal tract (GIT). Probe 15 demonstrated excellent stability under simulated stomach- and duodenum-like conditions and protected 60% of the payload in a small intestine-like environment. Moreover, 15 displayed sustained release at colonic pH, delivering >90% of the payload over 38 h. Mesalamine (Msl) prodrugs 21 and 22 were also synthesised and showed better stability than probe 15 in the simulated upper GIT but relatively slower release at colonic pH (61−68% of Msl over 48 h). For both prodrugs, the extent of release was comparable to that of the commercial product Asacol. This study provides initial proof of concept regarding the use of a cyclisation-activated prodrug for colon delivery and suggests that release characteristics still vary on a case-by-case basis.
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Mukaila YO, Ajao AAN, Moteetee AN. Khaya grandifoliola C. DC. (Meliaceae: Sapindales): Ethnobotany, phytochemistry, pharmacological properties, and toxicology. J Ethnopharmacol 2021; 278:114253. [PMID: 34058312 DOI: 10.1016/j.jep.2021.114253] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 04/28/2021] [Accepted: 05/08/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Khaya grandifoliola is a well-known tree species in Africa with a conservation status of 'vulnerable' due to its overexploitation by the wood industry. Several studies have recorded numerous ethnobotanical uses of this plant, as well as the scientific validation of the efficacy of extracts from different plant parts used for the treatment of various ailments. However, this useful information is scattered throughout the literature and thus there is no opportunity to identify the existing knowledge gaps. AIM OF THE STUDY This review aims to highlight the medicinal importance of Khaya grandifoliola including its known phytochemistry, biological activities and toxicology, to encourage a refocused conservation strategy since all current efforts are geared towards maintaining its continuous supply to the wood industry. MATERIALS AND METHODS Articles on K. grandifoliola were sourced from online databases such as Google Scholar, Medicine, PubMed, Science Direct, Scopus, SciFinder and other science journal websites up to May 2020. The search was conducted using various combinations of keywords such as biotechnological uses, biological activity, ethnobotany, ethnomedicine, indigenous uses, pharmacological activity, phytochemistry, proximate composition, toxicity, and traditional uses of K. grandifoliola. All downloaded articles were screened to determine their relevance to the scope of the review and the selected papers were included. RESULTS The review revealed a host of ethnomedicinal uses such as anticancer, antidiabetic, antimicrobial, anti-sickling, anti-ulcerogenic, and hepatoprotective, many of which are supported by scientific data. More importantly, toxicity tests revealed that many of the extracts are safe at various therapeutic doses. Important knowledge gaps that should be explored include phytochemical characterization and validation of some ethnobotanical claims on the folkloric usage of the plant. CONCLUSIONS Notwithstanding the importance of K. grandifoliola in the wood industry, this review reveals that its use as a medicine is equally important. Its medicinal uses are also well supported with scientific studies as well as favourable toxicological studies though some scientific knowledge gaps require further studies.
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Affiliation(s)
- Yusuf Ola Mukaila
- Department of Botany, Obafemi Awolowo University, Ile-Ife, 220005, Osun State, Nigeria.
| | - Abdulwakeel Ayokun-Nun Ajao
- Department of Botany & Plant Biotechnology, APK Campus, University of Johannesburg, PO Box 524, Auckland Park, 2006, South Africa.
| | - Annah Ntsamaeeng Moteetee
- Department of Botany & Plant Biotechnology, APK Campus, University of Johannesburg, PO Box 524, Auckland Park, 2006, South Africa.
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Hosseini S, Wetzel O, Kostka K, Heggen M, Loza K, Epple M. Pathways for Oral and Rectal Delivery of Gold Nanoparticles (1.7 nm) and Gold Nanoclusters into the Colon: Enteric-Coated Capsules and Suppositories. Molecules 2021; 26:5069. [PMID: 34443657 PMCID: PMC8401122 DOI: 10.3390/molecules26165069] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 08/09/2021] [Accepted: 08/19/2021] [Indexed: 12/26/2022] Open
Abstract
Two ways to deliver ultrasmall gold nanoparticles and gold-bovine serum albumin (BSA) nanoclusters to the colon were developed. First, oral administration is possible by incorporation into gelatin capsules that were coated with an enteric polymer. These permit the transfer across the stomach whose acidic environment damages many drugs. The enteric coating dissolves due to the neutral pH of the colon and releases the capsule's cargo. Second, rectal administration is possible by incorporation into hard-fat suppositories that melt in the colon and then release the nanocarriers. The feasibility of the two concepts was demonstrated by in-vitro release studies and cell culture studies that showed the easy redispersibility after dissolution of the respective transport system. This clears a pathway for therapeutic applications of drug-loaded nanoparticles to address colon diseases, such as chronic inflammation and cancer.
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Affiliation(s)
- Shabnam Hosseini
- Inorganic Chemistry and Centre for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitaetsstr. 5-7, 45117 Essen, Germany; (S.H.); (O.W.); (K.K.); (K.L.)
| | - Oliver Wetzel
- Inorganic Chemistry and Centre for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitaetsstr. 5-7, 45117 Essen, Germany; (S.H.); (O.W.); (K.K.); (K.L.)
| | - Kathrin Kostka
- Inorganic Chemistry and Centre for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitaetsstr. 5-7, 45117 Essen, Germany; (S.H.); (O.W.); (K.K.); (K.L.)
| | - Marc Heggen
- Ernst Ruska Centre for Microscopy and Spectroscopy with Electrons, Forschungszentrum Jülich GmbH, 52428 Jülich, Germany;
| | - Kateryna Loza
- Inorganic Chemistry and Centre for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitaetsstr. 5-7, 45117 Essen, Germany; (S.H.); (O.W.); (K.K.); (K.L.)
| | - Matthias Epple
- Inorganic Chemistry and Centre for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitaetsstr. 5-7, 45117 Essen, Germany; (S.H.); (O.W.); (K.K.); (K.L.)
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Ashique S, Sandhu NK, Chawla V, Chawla PA. Targeted Drug Delivery: Trends and Perspectives. Curr Drug Deliv 2021; 18:1435-1455. [PMID: 34151759 DOI: 10.2174/1567201818666210609161301] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 03/03/2021] [Accepted: 04/07/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Due to various limitations in conventional drug delivery system, it is important to focus on the target-specific drug delivery system where we can deliver the drug without any degradation. Among various challenges faced by a formulation scientist, delivering the drug to its right site, in its right dose, is also an important aim. A focused drug transport aims to extend, localize, target and have a safe drug interaction with the diseased tissue. OBJECTIVE The aim of targeted drug delivery is to make the required amount of the drug available at its desired site of action. Drug targeting can be accomplished in a number ways that include enzyme mediation, pH-dependent release, use of special vehicles, receptor targeting among other mechanisms. Intelligently designed targeted drug delivery systems also offer the advantages of a low dose of the drug along with reduced side effects which ultimately improves patient compliance. Incidences of dose dumping and dosage form failure are negligible. A focused drug transport aims to have a safe drug interaction with the diseased tissue. CONCLUSION This review focuses on the available targeting techniques for delivery to the colon, brain and other sites of interest. Overall, the article should make an excellent read for the researchers in this area. Newer drug targets may be identified and exploited for successful drug targeting.
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Affiliation(s)
- Sumel Ashique
- Department of Pharmaceutics, ISF College of Pharmacy, Moga-142001, Punjab, India
| | - Navjot Kaur Sandhu
- Department of Pharmaceutical Analysis, ISF College of Pharmacy, Moga-142001, Punjab, India
| | - Viney Chawla
- University Institute of Pharmaceutical Sciences and Research, Baba Farid University of Health Sciences, Faridkot, Punjab, India
| | - Pooja A Chawla
- Department of Pharmaceutical Analysis, ISF College of Pharmacy, Moga-142001, Punjab, India
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Shoaib MH, Sikandar M, Ahmed FR, Ali FR, Qazi F, Yousuf RI, Irshad A, Jabeen S, Ahmed K. Applications of Polysaccharides in Controlled Release Drug Delivery System. Polysaccharides 2021. [DOI: 10.1002/9781119711414.ch29] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Amiri MS, Mohammadzadeh V, Yazdi MET, Barani M, Rahdar A, Kyzas GZ. Plant-Based Gums and Mucilages Applications in Pharmacology and Nanomedicine: A Review. Molecules 2021; 26:1770. [PMID: 33809917 PMCID: PMC8004199 DOI: 10.3390/molecules26061770] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 03/16/2021] [Accepted: 03/19/2021] [Indexed: 02/07/2023] Open
Abstract
Gums are carbohydrate biomolecules that have the potential to bind water and form gels. Gums are regularly linked with proteins and minerals in their construction. Gums have several forms, such as mucilage gums, seed gums, exudate gums, etc. Plant gums are one of the most important gums because of their bioavailability. Plant-derived gums have been used by humans since ancient times for numerous applications. The main features that make them appropriate for use in different applications are high stabilization, viscosity, adhesive property, emulsification action, and surface-active activity. In many pharmaceutical formulations, plant-based gums and mucilages are the key ingredients due to their bioavailability, widespread accessibility, non-toxicity, and reasonable prices. These compete with many polymeric materials for use as different pharmaceuticals in today's time and have created a significant achievement from being an excipient to innovative drug carriers. In particular, scientists and pharmacy industries around the world have been drawn to uncover the secret potential of plant-based gums and mucilages through a deeper understanding of their physicochemical characteristics and the development of safety profile information. This innovative unique class of drug products, useful in advanced drug delivery applications, gene therapy, and biosynthesis, has been developed by modification of plant-based gums and mucilages. In this review, both fundamental and novel medicinal aspects of plant-based gums and mucilages, along with their capacity for pharmacology and nanomedicine, were demonstrated.
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Affiliation(s)
| | - Vahideh Mohammadzadeh
- Department of Pharmaceutical Nanotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad 917794-8954, Iran;
| | | | - Mahmood Barani
- Department of Chemistry, Shahid Bahonar University of Kerman, Kerman 76169-14111, Iran;
| | - Abbas Rahdar
- Department of Physics, University of Zabol, Zabol 98613-35856, Iran
| | - George Z. Kyzas
- Department of Chemistry, International Hellenic University, 65404 Kavala, Greece
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Affiliation(s)
- Manoj Kumar Sarangi
- Department of Pharmacy, Sardar Bhagwan Singh Postgraduate Institute of Biomedical Sciences and Research, Dehradun, India
- Bijupatnaik University of Technology, Rourkela, India
| | - M. E. Bhanoji Rao
- Department of Pharmacy, Roland Institute of Pharmaceutical Sciences, Berhampur, India
- Department of Pharmacy, Calcutta Institute of Pharmaceutical Technology and Allied Health Sciences, Howrah, India
| | - Versha Parcha
- Department of Pharmacy, Sardar Bhagwan Singh Postgraduate Institute of Biomedical Sciences and Research, Dehradun, India
- Department of Applied Chemistry, Dolphin (PG) Institute of Biomedical and Natural Sciences, Dehradun, India
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9
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Affiliation(s)
- Siavash Iravani
- Faculty of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
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10
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Stealey S, Guo X, Majewski R, Dyble A, Lehman K, Wedemeyer M, Steeber DA, Kaltchev MG, Chen J, Zhang W. Calcium-oligochitosan-pectin microcarrier for colonic drug delivery. Pharm Dev Technol 2019; 25:260-265. [PMID: 31709858 DOI: 10.1080/10837450.2019.1691591] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Pectin-based hydrogel microcarriers have shown promise for drug delivery to the colonic region. Microcarriers must remain stable throughout the upper gastrointestinal tract for effective colonic delivery, an issue that traditional pectin-based microcarriers have faced. The positively-charged natural biopolymer oligochitosan and divalent cation Ca2+ were used to dually cross-link pectin-based hydrogel microcarriers to improve carrier stability through simulated gastric and intestinal environments. Microcarriers were characterized with Scanning Electron Microscope and Fourier-Transform Infrared analysis. An optical microscope was used to observe the change of microcarrier size and morphology over time in the simulated gastrointestinal environments. Fluorescently-labeled Dextran was used as a model drug for this system. Calcium-Oligochitosan-Pectin microcarriers exhibited relatively small drug release in the upper gastrointestinal regions and were responsive to the high pH and enzymatic activity of simulated colonic environment (over 94% release after 2 h), suggesting great potential for colonic drug delivery.
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Affiliation(s)
- Samuel Stealey
- BioMolecular Engineering Program, Department of Physics & Chemistry, Milwaukee School of Engineering, Milwaukee, WI, USA
| | - Xiaoru Guo
- Department of Mechanical Engineering, University of Wisconsin-Milwaukee, Milwaukee, WI, USA
| | - Rebecca Majewski
- BioMolecular Engineering Program, Department of Physics & Chemistry, Milwaukee School of Engineering, Milwaukee, WI, USA
| | - Alexander Dyble
- BioMolecular Engineering Program, Department of Physics & Chemistry, Milwaukee School of Engineering, Milwaukee, WI, USA
| | - Kendra Lehman
- BioMolecular Engineering Program, Department of Physics & Chemistry, Milwaukee School of Engineering, Milwaukee, WI, USA
| | - Michael Wedemeyer
- BioMolecular Engineering Program, Department of Physics & Chemistry, Milwaukee School of Engineering, Milwaukee, WI, USA
| | - Douglas A Steeber
- Department of Biological Sciences, University of Wisconsin-Milwaukee, Milwaukee, WI, USA
| | - Matey G Kaltchev
- BioMolecular Engineering Program, Department of Physics & Chemistry, Milwaukee School of Engineering, Milwaukee, WI, USA
| | - Junhong Chen
- Department of Mechanical Engineering, University of Wisconsin-Milwaukee, Milwaukee, WI, USA
| | - Wujie Zhang
- BioMolecular Engineering Program, Department of Physics & Chemistry, Milwaukee School of Engineering, Milwaukee, WI, USA
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Song L, Liang L, Shi X, Chen H, Zhao S, Chen W, Zhou R, Zhao W. Optimizing pH-sensitive and time-dependent polymer formula of colonic pH-responsive pellets to achieve precise drug release. Asian J Pharm Sci 2019; 14:413-422. [PMID: 32104470 PMCID: PMC7032081 DOI: 10.1016/j.ajps.2018.05.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 12/29/2017] [Accepted: 05/05/2018] [Indexed: 01/30/2023] Open
Abstract
Time-sensitive and pH-dependent polymers are generally employed to prepare colon-site delivery system, and their coating thickness and order are very important in controlling the drug release. The traditional colon-site delivery systems consist of time-dependent polymers as inner layer and pH-sensitive polymers as outer layer. However, they suffer from low drug-loading rate and immature drug release. In this study, total alkaloids of sophora alopecuroides(TASA)-loaded pellets were prepared by extrusion-spheronization method and coated with Eudragit RS30D and Eudragit S100. Pellets using Eudragit RS30D as inner layer and Eudragit S100 as outer layer were named as ERS-ES100 TCO, while pellets with Eudragit S100 as inner layer and Eudragit RS30D as outer layer were ES100-ERS NCO. Both types of formulations with varying coating ratios and orders of Eudragit S100 and Eudragit RS30D were designed and prepared. The following in vitro drug release and SEM studies indicated that ERS-ES100 TCO(F2) with 12.8% Eudragit RS30D as inner layer and 21% Eudragit S100 as outer layer released up to 42% drug in 5 h. Interestingly, ES100-ERS NCO (F4) coated with 12.8% Eudragit S100 and 14.8% Eudragit RS30D showed optimal drug release in colon. In conclusion, ES100-ERS NCO colonic delivery system achieved reduced coating thickness and improved colonic targeting compared with traditional delivery system (ERS-ES100 TCO). In addition, the similarity factors (f2 ) value of sophoridine and matrine for investigated formulation were within 50-100 and > 80, demonstrating that sophoridine and matrine in all formulations achieved a synchronous release.
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Affiliation(s)
- Lijun Song
- School of Pharmacy, Guangdong Medical University, No.1, Xincheng Road, Dongguan 523808, China
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Guangdong Medical University, Zhanjiang 524023, China
| | - Liping Liang
- School of Pharmacy, Guangdong Medical University, No.1, Xincheng Road, Dongguan 523808, China
| | - Xiaoying Shi
- School of Pharmacy, Guangdong Medical University, No.1, Xincheng Road, Dongguan 523808, China
| | - Honglang Chen
- School of Pharmacy, Guangdong Medical University, No.1, Xincheng Road, Dongguan 523808, China
| | - Shumin Zhao
- School of Pharmacy, Guangdong Medical University, No.1, Xincheng Road, Dongguan 523808, China
| | - Wenfeng Chen
- School of Pharmacy, Guangdong Medical University, No.1, Xincheng Road, Dongguan 523808, China
| | - Ruoxia Zhou
- School of Pharmacy, Guangdong Medical University, No.1, Xincheng Road, Dongguan 523808, China
| | - Wenchang Zhao
- School of Pharmacy, Guangdong Medical University, No.1, Xincheng Road, Dongguan 523808, China
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Guangdong Medical University, Zhanjiang 524023, China
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12
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Sa B, Mukherjee S, Roy SK. Effect of polymer concentration and solution pH on viscosity affecting integrity of a polysaccharide coat of compression coated tablets. Int J Biol Macromol 2019; 125:922-30. [PMID: 30553857 DOI: 10.1016/j.ijbiomac.2018.12.101] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 11/26/2018] [Accepted: 12/11/2018] [Indexed: 11/23/2022]
Abstract
Tablets, compression coated with certain polysaccharides and intended for colon delivery, retain the integrity of the coat for an initial period of about 6 h (lag period) beyond which (post-lag period) the coat is degraded by colonic enzymes to induce drug release. This work was undertaken to investigate the factors which influence the integrity of the coat during the lag period. Core tablets containing two model drugs were compression coated with various amounts of carboxymethyl locust bean gum (CMLBG). In-vitro release of drugs, erosion of coat, and steady shear viscosity of CMLBG solutions having different concentrations and solution pH were determined. The viscosity of CMLBG that depended primarily on CMLBG concentration and partly on solution pH was responsible for erosion and integrity of the coat in the lag period. Evaluation of polymer viscosity could describe the integrity of coat of a polysaccharide coated tablet in the lag period.
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13
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Ferri D, Costero AM, Gaviña P, Parra M, Merino V, Teruel AH, Sancenón F, Martínez-Máñez R. Efficacy of budesonide-loaded mesoporous silica microparticles capped with a bulky azo derivative in rats with TNBS-induced colitis. Int J Pharm 2019; 561:93-101. [PMID: 30817986 DOI: 10.1016/j.ijpharm.2019.02.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 02/14/2019] [Accepted: 02/15/2019] [Indexed: 12/25/2022]
Abstract
A colon targeted drug delivery system for inflammatory bowel diseases (IBD), consisting in budesonide loaded mesoporous silica microparticles functionalized with a selective azo-molecular gate (M-Bud), has been evaluated for in vivo efficacy. Experimental colitis in male Wistar rats was induced by rectal instillation of 2,4,6-trinitrobenzenesulfonic acid (TNBS). M-Bud was orally administered to the rats as a suspension in water. Colon/body weight ratio, clinical activity score, and histological evaluation were used as inflammatory indices to measure the performance of the microparticles. The formulation was compared with a suspension prepared from the commercial drug Entocord®. Statistical analyses of all scores indicate that the controlled release of budesonide in colon from M-Bud showed efficacy similar to that of Entocord in the healing of induced colitis in rats.
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Affiliation(s)
- Daniel Ferri
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Doctor Moliner 50, Burjassot, 46100 Valencia, Spain; Departamento de Química Orgánica, Universitat de València, Doctor Moliner 50, Burjassot, 46100 Valencia, Spain
| | - Ana M Costero
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Doctor Moliner 50, Burjassot, 46100 Valencia, Spain; Departamento de Química Orgánica, Universitat de València, Doctor Moliner 50, Burjassot, 46100 Valencia, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain
| | - Pablo Gaviña
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Doctor Moliner 50, Burjassot, 46100 Valencia, Spain; Departamento de Química Orgánica, Universitat de València, Doctor Moliner 50, Burjassot, 46100 Valencia, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain.
| | - Margarita Parra
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Doctor Moliner 50, Burjassot, 46100 Valencia, Spain; Departamento de Química Orgánica, Universitat de València, Doctor Moliner 50, Burjassot, 46100 Valencia, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain
| | - Virginia Merino
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Doctor Moliner 50, Burjassot, 46100 Valencia, Spain; Departamento de Farmacia y Tecnología Farmacéutica y Parasitología, Universitat de València, Avda Vte Andrés Estellés sn, Burjassot, 46100 Valencia, Spain.
| | - Adrián H Teruel
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Doctor Moliner 50, Burjassot, 46100 Valencia, Spain; Departamento de Química, Universitat Politècnica de València, Camí de Vera s/n, 46022 Valencia, Spain
| | - Félix Sancenón
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Doctor Moliner 50, Burjassot, 46100 Valencia, Spain; Departamento de Química, Universitat Politècnica de València, Camí de Vera s/n, 46022 Valencia, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain
| | - Ramón Martínez-Máñez
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Doctor Moliner 50, Burjassot, 46100 Valencia, Spain; Departamento de Química, Universitat Politècnica de València, Camí de Vera s/n, 46022 Valencia, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain
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Xing P, Shi Y, Dong C, Liu H, Cheng Y, Sun J, Li D, Li M, Sun K, Feng D. Colon-Targeted Delivery of IgY Against Clostridium difficile Toxin A and B by Encapsulation in Chitosan-Ca Pectinate Microbeads. AAPS PharmSciTech 2017; 18:1095-1103. [PMID: 27826799 DOI: 10.1208/s12249-016-0656-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 10/26/2016] [Indexed: 12/18/2022] Open
Abstract
This study investigated the use of a newly developed chitosan-Ca pectinate microbead formulation for the colon-targeted delivery of anti-A/B toxin immunoglobulin of egg yolk (IgY) to inhibit toxin binding to colon mucosa cells. The effect of the three components (pectinate, calcium chloride, and chitosan) used for the microbead production was examined with the aim of identifying the optimal levels to improve drug encapsulation efficiency, swelling ratio, and cumulative IgY release rate. The optimized IgY-loaded bead component was pectin 5% (w/v), CaCl2 3% (w/v), and chitosan 0.5% (w/v). Formulated beads were spherical with 1.2-mm diameter, and the drug loading was 45%. An in vitro release study revealed that chitosan-Ca pectinate microbeads inhibited IgY release in the upper gastrointestinal tract and significantly improved the site-specific release of IgY in the colon. An in vivo rat study demonstrated that 72.6% of biologically active IgY was released specifically in the colon. These results demonstrated that anti-A/B toxin IgY-loaded chitosan-Ca pectinate oral microbeads improved IgY release behavior in vivo, which could be used as an effective oral delivery platform for the biological treatment of Clostridium difficile infection (CDI).
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T. VS, Henry LJK, Narra K, Lalduhsanga P, Kandasamy R. Design and development of Albizia stipulata gum based controlled-release matrix tablets in cancer therapeutics. Int J Biol Macromol 2016; 92:972-980. [DOI: 10.1016/j.ijbiomac.2016.08.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 08/02/2016] [Accepted: 08/03/2016] [Indexed: 01/24/2023]
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16
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Bonsu MA, Ofori-Kwakye K, Kipo SL, Boakye-Gyasi ME, Fosu MA. Development of Oral Dissolvable Films of Diclofenac Sodium for Osteoarthritis Using Albizia and Khaya Gums as Hydrophilic Film Formers. J Drug Deliv 2016; 2016:6459280. [PMID: 27313894 DOI: 10.1155/2016/6459280] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 05/08/2016] [Indexed: 11/18/2022]
Abstract
Oral dissolvable films (ODFs) of diclofenac sodium intended for osteoarthritis were prepared using Albizia and Khaya gums as hydrophilic film formers. The physicochemical properties of the gums were characterized and the gums were used to prepare diclofenac sodium ODFs (~50 mg/4 cm(2) film) by solvent casting. The two gums showed satisfactory film forming properties. The physicomechanical properties, drug-excipient compatibility, and in vitro drug release of the films in phosphate buffer pH 6.8 were studied. Khaya gum had higher extraction yield, moisture content, insoluble matter and true density while Albizia gum showed greater swelling capacity, solubility, and minerals content. The ODFs were thin, soft, and flexible with smooth glossy surfaces and possessed satisfactory physicomechanical properties. FTIR studies showed that no interaction occurred between the drug and the gums. The ODFs disintegrated in <45 s achieved >75% drug release within 7 min with dissolution efficiencies of ~83-96%. Drug releases from F2, F3, F4, F5, and F6 were similar to F1 (p > 0.05; f1 < 15 and f2 ≥ 50) while F7 differed markedly from F1 (p < 0.001; f1 > 15 and f2 < 50). Drug release followed the Higuchi kinetic model which is indicative of Fickian drug diffusion.
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Avachat AM, Shinde AS. Feasibility studies of concomitant administration of optimized formulation of probiotic-loaded Vancomycin hydrochloride pellets for colon delivery. Drug Dev Ind Pharm 2015; 42:80-90. [PMID: 25923416 DOI: 10.3109/03639045.2015.1029939] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Objective of this study was to develop Vancomycin HCl pellets loaded with Saccharomyces boulardii (S.b.) for pH-dependent system and CODES™ for augmenting the efficacy of Vancomycin HCl in the treatment of colitis. Pellets were prepared by extrusion-spheronization. In the pH-dependent system, the pellets were coated with Eudragit FS 30D. These pellets exhibited spherical form and a uniform surface coating. The CODES™ system consisted of three components: core containing mannitol, drug and probiotic, an inner acid-soluble coating layer, and an outer layer of enteric coating material. Statistical factorial design was used to optimize both formulations. Scanning electron micrographs of coated pellets revealed uniform coating. In vitro drug release of these coated pellets was studied sequentially in various buffers with (2%) and without rat cecal content for a period of 12 h. From the optimized pH-dependent formulation, F6 (20% w/w coating level and 15% w/v concentration of polymer), higher amount of probiotic was released in earlier time phase (first 5 h) as compared to the CODES™ and so R5 [containing acid-soluble inner coating layer (15% w/w coating level and 12% w/v concentration of Eudragit E100), and an outer layer of enteric coating material (12% w/w coating level and 10% w/v concentration of Eudragit L100)] was considered as the best formulation after confirming in vivo X-ray studies conducted on rabbits, suggesting that Vancomycin HCl and S.b. may be co-administered as pellets [CODES™] to enhance the effectiveness of Vancomycin HCl in the treatment of colitis without its associated side effects, which can only be confirmed after clinical trials.
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Affiliation(s)
- Amelia M Avachat
- a Department of Pharmaceutics , Sinhgad College of Pharmacy , Pune , Maharashtra , India
| | - Amol S Shinde
- a Department of Pharmaceutics , Sinhgad College of Pharmacy , Pune , Maharashtra , India
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Abstract
Owing to the high demand for fertilizer formulations that will exhaust the possibilities of nutrient use efficiency (NUE), regulate fertilizer consumption, and lessen agrophysicochemical properties and environmental adverse effects instigated by conventional nutrient supply to crops, this review recapitulates controlled release fertilizers (CRFs) as a cutting-edge and safe way to supply crops’ nutrients over the conventional ways. Essentially, CRFs entail fertilizer particles intercalated within excipients aiming at reducing the frequency of fertilizer application thereby abating potential adverse effects linked with conventional fertilizer use. Application of nanotechnology and materials engineering in agriculture particularly in the design of CRFs, the distinctions and classification of CRFs, and the economical, agronomical, and environmental aspects of CRFs has been revised putting into account the development and synthesis of CRFs, laboratory CRFs syntheses and testing, and both linear and sigmoid release features of CRF formulations. Methodical account on the mechanism of nutrient release centring on the empirical and mechanistic approaches of predicting nutrient release is given in view of selected mathematical models. Compositions and laboratory preparations of CRFs basing on in situ and graft polymerization are provided alongside the physical methods used in CRFs encapsulation, with an emphasis on the natural polymers, modified clays, and superabsorbent nanocomposite excipients.
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Butte K, Momin M, Deshmukh H. Optimisation and in vivo evaluation of pectin based drug delivery system containing curcumin for colon. Int J Biomater 2014; 2014:924278. [PMID: 25101127 DOI: 10.1155/2014/924278] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Revised: 06/14/2014] [Accepted: 06/15/2014] [Indexed: 12/02/2022] Open
Abstract
The higher incidences of side effects of existing drugs have shifted researchers and clinicians to explore the dietary phytoconstituents for its therapeutic potentials. The present study is based on compression coated curcumin tablet for the colon. Curcumin has anti-inflammatory and antioxidant properties. Curcumin presents a bioavailability problem due to poor solubility. An inclusion complex was formed with hydroxypropyl-β-cyclodextrin to enhance the solubility. In this study, the core tablet of curcumin inclusion complex was compressed between the layers of polymer blend of pectin and Eudragit S100. The 32 full factorial design was utilised for optimization of the formulation. The polymer ratio (X1) and coat thickness (X2) presented significant effects on the selected responses, i.e., percent drug release after 4 hours (Y240) and difference in percent drug release between 4th and 6th hour (Ydiff) in presence of pectinase enzyme. The results revealed that higher coat weight (600 mg) and higher level of pectin ratio (70% w/w) protected the curcumin tablet till ascending colon. The in vivo studies by roentgenography method using human volunteers supported these observations. Hence, it can be concluded that the combination of pectin and Eudrgit S100 makes the system biodegradable and pH dependent for targeting the drug to the colon.
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Choudhary PD, Pawar HA. Recently Investigated Natural Gums and Mucilages as Pharmaceutical Excipients: An Overview. J Pharm (Cairo) 2014; 2014:204849. [PMID: 26556189 DOI: 10.1155/2014/204849] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/21/2013] [Revised: 03/05/2014] [Accepted: 03/10/2014] [Indexed: 11/23/2022]
Abstract
Due to advances in drug delivery technology, currently, excipients are included in novel dosage forms to fulfil specific functions and in some cases they directly or indirectly influence the extent and/or rate of drug release and drug absorption. Recent trends towards use of plant based and natural products demand the replacement of synthetic additives with natural ones. Today, the whole world is increasingly interested in natural drugs and excipients. These natural materials have many advantages over synthetic ones as they are chemically inert, nontoxic, less expensive, biodegradable, and widely available. This review discusses majority of the plant-derived polymeric compounds (gums and mucilage's), their sources, chemical constituents, uses, and some recent investigations as excipients in novel drug delivery systems.
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Elkhodairy KA, Afifi SA, Zakaria AS. A promising approach to provide appropriate colon target drug delivery systems of vancomycin HCL: pharmaceutical and microbiological studies. Biomed Res Int 2014; 2014:182197. [PMID: 24551841 DOI: 10.1155/2014/182197] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2013] [Revised: 11/04/2013] [Accepted: 11/07/2013] [Indexed: 11/18/2022]
Abstract
Vancomycin HCl was prepared as orally administered colon target drug delivery tablets for systemic therapy. Tablet matrices containing 10-60% of tablet weight of guar gum (F1-F6) were prepared by direct compression and subjected to in vitro release studies to explore their sustained release in the colon. Various synthetic and natural polymers were incorporated to F6 to modify the drug release rate. Different 15 matrix tablet formulations (F6-F20) were enteric coated with hydroxypropyl methyl cellulose phthalate. F6, F13 and F20 showed promising sustained release results having median dissolution time (MDT) values: 8.25, 7.97, and 7.64, respectively. Microbiological assay was performed to test the efficacy of F6, F13, and F20 to inhibit clinical Staphylococcus aureus (SA) isolates. Bactericidal activity of F6 was reached after 2, 4, and 24 hours of incubation against MSSA 18, MRSA 29, and MRSA 11 strains, respectively, while it was reached within 6-8 hours in case of F13, and F20 against all strains tested. F13 enhanced log microbial reduction by 1.74, 0.65 and 2.4 CFU/mL compared to F6 while it was 1, 2.57 and 1.57 compared to F20 against MSSA18, MRSA11 and MRSA29, respectively. Vancomycin HCl tablets displayed a promising sustained release in vitro and microbiological inhibitory action on all isolates tested.
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Pachuau L, Mazumder B. Evaluation of Albizia procera gum as compression coating material for colonic delivery of budesonide. Int J Biol Macromol 2013; 61:333-9. [PMID: 23916644 DOI: 10.1016/j.ijbiomac.2013.07.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Revised: 07/06/2013] [Accepted: 07/27/2013] [Indexed: 11/27/2022]
Abstract
The purpose of this research was to develop and evaluate Albizia procera gum as compression-coating polymer for colonic delivery of budesonide. Tablets were prepared by direct compression method using spray-dried lactose and microcrystalline cellulose as filler binders. The compatibility between the drug and the polymer was studied through TGA and FTIR spectroscopy. In vitro drug release were studied in dissolution media with or without 2% rat cecal contents while in vivo X-ray study was conducted on rabbits. The results indicate that procera gum and the drug were compatible with each other and tablet coated with procera gum was suitable for colonic delivery of drugs.
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Affiliation(s)
- Lalduhsanga Pachuau
- Department of Pharmaceutical Sciences, Dibrugarh University, Assam, 786004, India
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Odeku OA, Okunlola A, Lamprecht A. Microbead design for sustained drug release using four natural gums. Int J Biol Macromol 2013; 58:113-20. [DOI: 10.1016/j.ijbiomac.2013.03.049] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Revised: 03/17/2013] [Accepted: 03/19/2013] [Indexed: 10/27/2022]
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Chickpetty SM, Raga BV. Formulation, in vitro drug release and in vivo human X-ray investigation of polysaccharide based drug delivery systems for targeting 5-fluorouracil to the colon. BRAZ J PHARM SCI 2013. [DOI: 10.1590/s1984-82502013000200008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The purpose of this research study was to develop 5-fluorouracil compression coated tablets by using biodegradable polysaccharide polymer locust bean gum (LBG) and hydroxyl propyl methyl cellulose (HPMC) as coating materials. The fast disintegrating core tablets containing 50 mg of 5-fluorouracil were compression coated with LBG and HPMC in different ratios (8:1, 7:2 and 6:3) with a coat weight of 300, 400 and 500 mg. In vitro dissolution data indicated that the formulation (CLH63) with a coat weight of 500 mg containing LBG and HPMC in the ratio 6:3 gave the best release profile (0% in first 5 hour and 96.18% in 24 hours). DSC and FTIR results indicated no possibility of interaction between drug and polymers or other excipients. In vivo human X-ray studies revealed that formulation CLH63 was able to resist breakdown in the stomach and small intestine. The disintegration of the tablet occurred in the colon between 8 to 16 hours of post dose. By the present study, it can be concluded that the LBG and HPMC based compression coated tablets of 5-fluorouracil will be useful strategy for colonic delivery of 5-fluorouracil without being released in upper gastrointestinal region for the safe and effective management of colon cancer.
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Prajapati VD, Jani GK, Moradiya NG, Randeria NP. Pharmaceutical applications of various natural gums, mucilages and their modified forms. Carbohydr Polym 2012; 92:1685-99. [PMID: 23399207 DOI: 10.1016/j.carbpol.2012.11.021] [Citation(s) in RCA: 221] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Accepted: 11/02/2012] [Indexed: 10/27/2022]
Abstract
A large number of plant based pharmaceutical excipients are available today. Gums and mucilages are the most commonly available plant ingredients with a wide range of applications in pharmaceutical and cosmetic industries. They are being used due to their abundance in nature, safety and economy. They have been extensively explored as pharmaceutical excipients. They are biocompatible, cheap and easily available. Natural materials have advantages over synthetic ones since they are chemically inert, nontoxic, less expensive, biodegradable and widely available. They can also be modified in different ways to obtain tailor-made materials for drug delivery systems and thus can compete with the available synthetic excipients. Recent trend toward the use of plant based and natural products demands the replacement of synthetic additives with natural ones. In this review, we describe the pharmaceutical applications of various natural gums, mucilages and their modified forms for the development of various drug delivery systems.
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Affiliation(s)
- Vipul D Prajapati
- Department of Pharmaceutics and Pharmaceutical Technology, SSR College of Pharmacy, Sayli-Silvassa Road, U.T. of Dadra and Nagar Haveli, Sayli, Silvassa 396 230, India.
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26
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Pachuau L, Mazumder B. Albizia procera gum as an excipient for oral controlled release matrix tablet. Carbohydr Polym 2012; 90:289-95. [DOI: 10.1016/j.carbpol.2012.05.038] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2012] [Revised: 05/02/2012] [Accepted: 05/15/2012] [Indexed: 11/26/2022]
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Ghimire M, Hodges LA, Band J, Lindsay B, O’Mahony B, McInnes FJ, Mullen AB, Stevens HN. Correlation between in vitro and in vivo erosion behaviour of erodible tablets using gamma scintigraphy. Eur J Pharm Biopharm 2011; 77:148-57. [DOI: 10.1016/j.ejpb.2010.10.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2010] [Revised: 10/12/2010] [Accepted: 10/18/2010] [Indexed: 01/14/2023]
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28
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Karrout Y, Neut C, Siepmann F, Wils D, Ravaux P, Deremaux L, Flament MP, Dubreuil L, Lemdani M, Desreumaux P, Siepmann J. Enzymatically degraded Eurylon 6 HP-PG: ethylcellulose film coatings for colon targeting in inflammatory bowel disease patients. J Pharm Pharmacol 2010; 62:1676-84. [DOI: 10.1111/j.2042-7158.2010.01165.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Abstract
Objectives
Film coatings based on blends of Eurylon 6 HP-PG (a hydroxypropylated and pregelatinized high amylose starch) and ethylcellulose were to be evaluated as promising coating materials for site-specific drug delivery to the colon of patients suffering from inflammatory bowel diseases.
Methods
Pellet starter cores containing 60% 5-aminosalicylic acid were prepared by extrusion/spheronization and coated with different Eurylon 6 HP-PG : ethylcellulose blends at various coating levels. Drug release was measured in media simulating the contents of the upper gastrointestinal tract (in the presence and absence of enzymes) as well as in media simulating the contents of the colon.
Key findings
5-Aminosalicylic acid release could effectively be suppressed in 0.1 N HCl and phosphate buffer pH 6.8, optionally containing pepsin or pancreatin, but occurred as soon as the pellets came into contact with culture medium inoculated with faecal samples from inflammatory bowel disease patients. This can be attributed to the partial degradation of the starch derivative by enzymes secreted by bacteria present in the colon of these patients.
Conclusions
The presented drug delivery system is adapted to the pathophysiological conditions in inflammatory bowel disease patients. Furthermore, drug release remained unaltered upon 1 year open storage.
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Affiliation(s)
- Youness Karrout
- College of Pharmacy, Université Lille Nord de France, Lille, France
- INSERM U 1008, Lille, France
| | - Christel Neut
- College of Pharmacy, Université Lille Nord de France, Lille, France
- INSERM U 995, Lille, France
| | - Florence Siepmann
- College of Pharmacy, Université Lille Nord de France, Lille, France
- INSERM U 1008, Lille, France
| | - Daniel Wils
- Roquette, Biology and Nutrition Department, Lestrem, France
| | - Pierre Ravaux
- College of Pharmacy, Université Lille Nord de France, Lille, France
- Laboratory of Biomathematics, Lille, France
| | | | - Marie-Pierre Flament
- College of Pharmacy, Université Lille Nord de France, Lille, France
- INSERM U 1008, Lille, France
| | - Luc Dubreuil
- College of Pharmacy, Université Lille Nord de France, Lille, France
- INSERM U 995, Lille, France
| | - Mohamed Lemdani
- College of Pharmacy, Université Lille Nord de France, Lille, France
- Laboratory of Biomathematics, Lille, France
| | - Pierre Desreumaux
- INSERM U 995, Lille, France
- School of Medicine, Université Lille Nord de France, Lille, France
| | - Juergen Siepmann
- College of Pharmacy, Université Lille Nord de France, Lille, France
- INSERM U 1008, Lille, France
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Philip AK, Philip B. Colon targeted drug delivery systems: a review on primary and novel approaches. Oman Med J 2010; 25:79-87. [PMID: 22125706 PMCID: PMC3215502 DOI: 10.5001/omj.2010.24] [Citation(s) in RCA: 170] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2010] [Accepted: 03/14/2010] [Indexed: 11/03/2022] Open
Abstract
The colon is a site where both local and systemic delivery of drugs can take place. Local delivery allows topical treatment of inflammatory bowel disease. However, treatment can be made effective if the drugs can be targeted directly into the colon, thereby reducing the systemic side effects. This review, mainly compares the primary approaches for CDDS (Colon Specific Drug Delivery) namely prodrugs, pH and time dependent systems, and microbially triggered systems, which achieved limited success and had limitations as compared with newer CDDS namely pressure controlled colonic delivery capsules, CODESTM, and osmotic controlled drug delivery which are unique in terms of achieving in vivo site specificity, and feasibility of manufacturing process.
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Affiliation(s)
- Anil K. Philip
- Department of Pharmaceutics, School of Pharmacy, University of Nizwa, Birkat Al Mouz, Nizwa-616, Sultanate of Oman
| | - Betty Philip
- Department of Pharmaceutics, School of Pharmacy, University of Nizwa, Birkat Al Mouz, Nizwa-616, Sultanate of Oman
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Patel NV, Patel JK, Shah SH. Box-Behnken experimental design in the development of pectin-compritol ATO 888 compression coated colon targeted drug delivery of mesalamine. Acta Pharm 2010; 60:39-54. [PMID: 20228040 DOI: 10.2478/v10007-010-0008-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The aim of this study was to investigate the combined influence of 3 independent variables in the compression coated tablet of mesalamine for ulcerative colitis. A 3-factor, 3-level Box-Behnken design was used to derive a second order polynomial equation and construct contour plots to predict responses. The independent variables selected were: percentage of polymers (pectin and compritol ATO 888) in compression coating (X(1)), coating mass (X(2)) and coating force (X(3)). Fifteen batches were prepared and evaluated for percent of drug released in 5 h (Y(5)), time required for 50 % mesalamine to dissolve (t(50)) with rat cecal (RC) content and without rat cecal content (t(50)), percent of drug released in 24 h in the presence of rat cecal content (Y(24) with RC). Transformed values of independent and dependent variables were subjected to multiple regressions to establish a full-model second-order polynomial equation. F was calculated to confirm the omission of insignificant terms from the full-model equation. The computer optimization process and contour plots predicted the levels of independent variables X(1), X(2), and X(3) (0, 0.2 and -0.15, respectively) for colon targeting and total percent of drug released up to 24 h.
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Abstract
A study has been made of the compression properties of khaya gum matrices and the effects of drug concentration and method of preparation of the material on the compression, mechanical and the drug release characteristics of the matrices. Khaya gum matrix tablets were prepared by direct compression and wet granulation methods. The compression properties of the formulations were assessed using the equations of Heckel and Kawakita. The mechanical properties of the tablets were evaluated using crushing strength and friability of the tablets, whereas the release properties of the tablets were evaluated by using the disintegration and dissolution times. The results obtained show that khaya gum deformed mainly by plastic deformation. The compression properties of the formulations were affected by the concentration of the drug and the method of preparation of the materials for compression. Tablets prepared by wet granulation showed faster onset and higher amount of plastic deformation during compression than those prepared by direct compression. Tablets containing dicalcium phosphate showed higher mechanical strength and disintegration and dissolution times. Wet granulation also increased the mechanical strength of the tablet without significantly affecting the drug release characteristics from the matrix tablets. Thus, the wet granulation method could be useful in the preparation of khaya gum matrix tablet with acceptable mechanical properties and drug release properties.
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Affiliation(s)
- Oluwatoyin A Odeku
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, University of Ibadan, Ibadan, Nigeria.
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Adenuga YA, Odeku OA, Adegboye TA, Itiola OA. Comparative evaluation of the binding properties of two species of Khaya gum polymer in a paracetamol tablet formulation. Pharm Dev Technol 2008; 13:473-80. [PMID: 18720239 DOI: 10.1080/10837450802179338] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
A study was made of the comparative effects of polymers obtained from two species of khaya tree - Khaya senegalensis and Khaya grandifoliola - as binding agents in a paracetamol tablet formulation. The mechanical properties of the tablets were assessed using the tensile strength (T), brittle fracture index (BFI) and friability (F) of the tablets while the drug release properties of the tablets were assessed using disintegration and dissolution times. The tensile strength, disintegration and the dissolution times of tablets increased with the increase in binder concentration while F and BFI decreased. K. senegalensis gum produced tablets with stronger mechanical properties with less tendency to laminate, and longer disintegration and dissolution times than K. grandifoliola gum. The results suggest that the polymer gum from K. senegalensis will be more appropriate as a binding agent than the gum from K. grandifoliola when higher mechanical strength and slower release profiles of tablets are desired.
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Affiliation(s)
- Yedunni A Adenuga
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, University of Ibadan, Ibadan, Nigeria
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33
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Odeku O. Effects of Albizia gum and gelatin on interacting variables affecting the mechanical and release properties of paracetamol tablets. J Drug Deliv Sci Technol 2008. [DOI: 10.1016/s1773-2247(08)50039-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Abstract
Compression coating is one of the approaches for delaying the release of drugs. The aim of this study was to develop colon-specific compression coated systems of 5-fluorouracil (5-FU) for the treatment of colorectal cancer using xanthan gum, boswellia gum and hydroxypropyl methylcellulose (HPMC) as the coating materials. Core tablets containing 50 mg of 5-FU were prepared by direct compression. The coating of the core tablets was done using different coat weights (230, 250, 275 and 300 mg) and different ratios (1:2, 2:1, 1:3, 1:7 and 3:4) of boswellia gum and xanthan gum and different ratios (1:1, 1:2, 2:1, and 2:3) of boswellia gum and HPMC. In-vitro release studies were carried out using simulated gastric and intestinal fluids, with and without rat caecal contents. Among the different ratios used for coating with boswellia:xanthan gum combination, ratio 1:3 gave the best release profile with the lowest coating weights of 230 mg (7.47 +/- 1.56% in initial 5 h). Further increase in the coat weights to 250, 275 and 300 mg led to drug release of 5.63 +/- 0.53%, 5.09 +/- 1.56% and 4.57 +/- 0.88%, respectively, in the initial 5 h and 96.90 +/- 0.66%, 85.05 +/- 1.01% and 80.22 +/- 0.35%, respectively, in 24 h. When coating was carried out using different ratios of the combination boswellia gum and HPMC, the ratio 2:3 gave the best results among the initial trial batches (7.80 +/- 0.57% in 5 h). Increasing the coat weights to 250, 275 and 300 mg led to drug release of 6.5 +/- 0.27%, 3.70 +/- 2.3% and 2.99 +/- 0.72%, respectively, in the initial 5 h and 96.90 +/- 0.66%, 85.05 +/- 1.01% and 80.22 +/- 0.35%, respectively, in 24 h. In-vitro studies were further carried out in the presence of 2% w/v rat caecal contents, which led to complete release of the drug from the tablets. Therefore, this study lays a basis for use of compression coating of 5-FU as a tool for delaying the release of the drug, which ensures better clinical management of the disease.
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Affiliation(s)
- V R Sinha
- Pharmaceutics Division, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh 160014, India.
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