1
|
Narala S, Ali Youssef AA, Munnangi SR, Narala N, Lakkala P, Vemula SK, Repka M. 3D printing in vaginal drug delivery: a revolution in pharmaceutical manufacturing. Expert Opin Drug Deliv 2024:1-15. [PMID: 38236621 DOI: 10.1080/17425247.2024.2306139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 01/12/2024] [Indexed: 01/19/2024]
Abstract
INTRODUCTION The Food and Drug Administration's approval of the first three-dimensional (3D) printed tablet, Spritam®, led to a burgeoning interest in using 3D printing to fabricate numerous drug delivery systems for different routes of administration. The high degree of manufacturing flexibility achieved through 3D printing facilitates the preparation of dosage forms with many actives with complex and tailored release profiles that can address individual patient needs. AREAS COVERED This comprehensive review provides an in-depth look into the several 3D printing technologies currently utilized in pharmaceutical research. Additionally, the review delves into vaginal anatomy and physiology, 3D-printed drug delivery systems for vaginal applications, the latest research studies, and the challenges of 3D printing technology and future possibilities. EXPERT OPINION 3D printing technology can produce drug-delivery devices or implants optimized for vaginal applications, including vaginal rings, intra-vaginal inserts, or biodegradable microdevices loaded with drugs, all custom-tailored to deliver specific medications with controlled release profiles. However, though the potential of 3D printing in vaginal drug delivery is promising, there are still challenges and regulatory hurdles to overcome before these technologies can be widely adopted and approved for clinical use. Extensive research and testing are necessary to ensure safety, effectiveness, and biocompatibility.
Collapse
Affiliation(s)
- Sagar Narala
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Ahmed Adel Ali Youssef
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, MS, USA
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Kafrelsheikh University, Kafrelsheikh, Egypt
| | - Siva Ram Munnangi
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Nagarjuna Narala
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Preethi Lakkala
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Sateesh Kumar Vemula
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, MS, USA
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, India
| | - Michael Repka
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, MS, USA
- Pii Center for Pharmaceutical Technology, The University of Mississippi, University, MS, USA
| |
Collapse
|
2
|
Wang M, Ma X, Zong S, Su Y, Su R, Zhang H, Liu Y, Wang C, Li Y. The prescription design and key properties of nasal gel for CNS drug delivery: A review. Eur J Pharm Sci 2024; 192:106623. [PMID: 37890640 DOI: 10.1016/j.ejps.2023.106623] [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: 05/19/2023] [Revised: 10/23/2023] [Accepted: 10/24/2023] [Indexed: 10/29/2023]
Abstract
Central nervous system (CNS) diseases are among the major health problems. However, blood-brain barrier (BBB) makes traditional oral and intravenous delivery of CNS drugs inefficient. The unique direct connection between the nose and the brain makes nasal administration a great potential advantage in CNS drugs delivery. However, nasal mucociliary clearance (NMCC) limits the development of drug delivery systems. Appropriate nasal gel viscosity alleviates NMCC to a certain extent, gels based on gellan gum, chitosan, carbomer, cellulose and poloxamer have been widely reported. However, nasal gel formulation design and key properties for alleviating NMCC have not been clearly discussed. This article summarizes gel formulations of different polymers in existing nasal gel systems, and attempts to provide a basis for researchers to conduct in-depth research on the key characteristics of gel matrix against NMCC.
Collapse
Affiliation(s)
- Miao Wang
- Pharmacy College, Shaanxi University of Chinese Medicine, Xianyang 712046, China
| | - Xinyu Ma
- Pharmacy College, Shaanxi University of Chinese Medicine, Xianyang 712046, China
| | - Shiyu Zong
- Institute of Traditional Chinese Medicine, Shaanxi Academy of Traditional Chinese Medicine, Xi'an 710001, China; Key Laboratory of TCM Drug Delivery, Shaanxi Academy of Traditional Chinese Medicine, Xi'an 710001, China
| | - Yaqiong Su
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education/College of Life Science, Northwest University, Xi'an 710069, China
| | - Rui Su
- Pharmacy College, Shaanxi University of Chinese Medicine, Xianyang 712046, China
| | - Hong Zhang
- Pharmacy College, Shaanxi University of Chinese Medicine, Xianyang 712046, China; Institute of Traditional Chinese Medicine, Shaanxi Academy of Traditional Chinese Medicine, Xi'an 710001, China; Key Laboratory of TCM Drug Delivery, Shaanxi Academy of Traditional Chinese Medicine, Xi'an 710001, China
| | - Yang Liu
- Institute of Traditional Chinese Medicine, Shaanxi Academy of Traditional Chinese Medicine, Xi'an 710001, China; Key Laboratory of TCM Drug Delivery, Shaanxi Academy of Traditional Chinese Medicine, Xi'an 710001, China
| | - Chunliu Wang
- Institute of Traditional Chinese Medicine, Shaanxi Academy of Traditional Chinese Medicine, Xi'an 710001, China; Key Laboratory of TCM Drug Delivery, Shaanxi Academy of Traditional Chinese Medicine, Xi'an 710001, China.
| | - Ye Li
- Pharmacy College, Shaanxi University of Chinese Medicine, Xianyang 712046, China; Institute of Traditional Chinese Medicine, Shaanxi Academy of Traditional Chinese Medicine, Xi'an 710001, China; Key Laboratory of TCM Drug Delivery, Shaanxi Academy of Traditional Chinese Medicine, Xi'an 710001, China.
| |
Collapse
|
3
|
Wang Q, Wu Z, Wang F, Zhang H, Gan L. Tacrolimus-Loaded Cationic Nanoemulsion In-Situ Gel System: In-Vitro Characterization and Performance in a Dry-Eye Rabbit Model. J Pharm Sci 2023; 112:2790-2798. [PMID: 37453530 DOI: 10.1016/j.xphs.2023.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 05/03/2023] [Accepted: 05/04/2023] [Indexed: 07/18/2023]
Abstract
Dry eye disease (DED) is a highly prevalent ocular surface disease that affects life quality and reduces productivity at work. The purpose of this study is to improve the efficacy of tacrolimus (FK506) in the treatment of DED using the special eye surface retention properties of cationic nanoemulsion (CNE) modified by thermosensitive in-situ gel (ISG) (CNE-ISG). The precorneal retention of CNE-ISG containing 0.05% FK506 (50 min) was longer than that of CNE containing 0.05% FK506 (25 min) and commercial suspension containing 0.1% FK506 (Talymus®) (10 min). Successfully modeled dry-eye rabbits were treated with 0.05% CNE-ISG (twice/day), 0.05% CNE and 0.1% suspension (Talymus®) (thrice/day). Schirmer's tear secretion test showed no significant difference between the CNE-ISG group and the healthy group after 5 days of treatment (p > 0.05). The results of a tear ferning test (TFT) showed that the tear-fern-like crystal branches in the CNE-ISG group returned to normal after 5 days of treatment. Histological analysis showed that the number of goblet cells in the CNE-ISG group significantly increased. HET-CAM stimulation test showed that the CNE-ISG group had no ocular irritation. The above results indicated that CNE-ISG might be a promising delivery system and as an effective dosage form was employed for FK506 in the treatment of DED.
Collapse
Affiliation(s)
- Qiuhe Wang
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China
| | - Zheng Wu
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China
| | - Feifei Wang
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China
| | - Hua Zhang
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China
| | - Li Gan
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China.
| |
Collapse
|
4
|
Li Y, Lee JS, Kirtane AR, Li M, Coffey CW, Hess K, Lopes A, Collins J, Tamang S, Ishida K, Hayward A, Wainer J, Wentworth AJ, Traverso G. Enzyme-Triggered Intestine-Specific Targeting Adhesive Platform for Universal Oral Drug Delivery. Adv Healthc Mater 2023; 12:e2301033. [PMID: 37314859 PMCID: PMC10653991 DOI: 10.1002/adhm.202301033] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 06/04/2023] [Indexed: 06/15/2023]
Abstract
Patient adherence to chronic therapies can be suboptimal, leading to poor therapeutic outcomes. Dosage forms that enable reduction in dosing frequency stand to improve patient adherence. Variation in gastrointestinal transit time, inter-individual differences in gastrointestinal physiology and differences in physicochemical properties of drugs represent challenges to the development of such systems. To this end, a small intestine-targeted drug delivery system is developed, where prolonged gastrointestinal retention and sustained release are achieved through tissue adhesion of drug pills mediated by an essential intestinal enzyme catalase. Here proof-of-concept pharmacokinetics is demonstrated in the swine model for two drugs, hydrophilic amoxicillin and hydrophobic levodopa. It is anticipated that this system can be applicable for many drugs with a diverse of physicochemical characteristics.
Collapse
Affiliation(s)
- Ying Li
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Haidian District, Beijing, 100193, P. R. China
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Jung Seung Lee
- Department of Intelligent Precision Healthcare Convergence, Sungkyunkwan University, Suwon, 16419, South Korea
- Department of Biomedical Engineering, Sungkyunkwan University, Suwon, 16419, South Korea
| | - Ameya R Kirtane
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Division of Gastroenterology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Mengyuan Li
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Faculty of Applied Science & Engineering, University of Toronto, Toronto, ON, M5S1A4, Canada
| | - Charles William Coffey
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Kaitlyn Hess
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Aaron Lopes
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Joy Collins
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Siddartha Tamang
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Keiko Ishida
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Alison Hayward
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Jacob Wainer
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Adam J Wentworth
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Giovanni Traverso
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Division of Gastroenterology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| |
Collapse
|
5
|
Kim KS, Na K, Bae YH. Nanoparticle oral absorption and its clinical translational potential. J Control Release 2023; 360:149-162. [PMID: 37348679 DOI: 10.1016/j.jconrel.2023.06.024] [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: 02/27/2023] [Revised: 06/04/2023] [Accepted: 06/17/2023] [Indexed: 06/24/2023]
Abstract
Oral administration of pharmaceuticals is the most preferred route of administration for patients, but it is challenging to effectively deliver active ingredients (APIs) that i) have extremely high or low solubility in intestinal fluids, ii) are large in size, iii) are subject to digestive and/or metabolic enzymes present in the gastrointestinal tract (GIT), brush border, and liver, and iv) are P-glycoprotein substrates. Over the past decades, efforts to increase the oral bioavailability of APIs have led to the development of nanoparticles (NPs) with non-specific uptake pathways (M cells, mucosal, and tight junctions) and target-specific uptake pathways (FcRn, vitamin B12, and bile acids). However, voluminous findings from preclinical models of different species rarely meet practical standards when translated to humans, and API concentrations in NPs are not within the adequate therapeutic window. Various NP oral delivery approaches studied so far show varying bioavailability impacted by a range of factors, such as species, GIT physiology, age, and disease state. This may cause difficulty in obtaining similar oral delivery efficacy when research results in animal models are translated into humans. This review describes the selection of parameters to be considered for translational potential when designing and developing oral NPs.
Collapse
Affiliation(s)
- Kyoung Sub Kim
- Department of Biotechnology, The Catholic University of Korea, 43 Jibong-ro, Wonmi-gu, Bucheon-si, Gyeonggi-do 14662, Republic of Korea
| | - Kun Na
- Department of Biotechnology, The Catholic University of Korea, 43 Jibong-ro, Wonmi-gu, Bucheon-si, Gyeonggi-do 14662, Republic of Korea; Department of BioMedical-Chemical Engineering, The Catholic University of Korea, 43 Jibong-ro, Wonmi-gu, Bucheon-si, Gyeonggi-do 14662, Republic of Korea
| | - You Han Bae
- Department of Molecular Pharmaceutics, University of Utah, Salt Lake City, UT 84112, USA.
| |
Collapse
|
6
|
Haji F, Kim DS, Tam KC. Tannic acid-coated cellulose nanocrystals with enhanced mucoadhesive properties for aquaculture. Carbohydr Polym 2023; 312:120835. [PMID: 37059561 DOI: 10.1016/j.carbpol.2023.120835] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 03/10/2023] [Accepted: 03/17/2023] [Indexed: 04/16/2023]
Abstract
Mucoadhesion can be exploited as a strategy to target drug and nutrient delivery to the outer mucosal layers of fish in aquaculture farms. Cellulose nanocrystals (CNC) derived from cellulose pulp fibers can interact with the mucosal membranes via hydrogen bonding, however, their mucoadhesive properties are weak and should be enhanced. In this study, CNC were coated with tannic acid (TA), a plant polyphenol with excellent wet-resistant bioadhesive properties, to strengthen their mucoadhesive capability. The optimal CNC:TA mass ratio was determined to be 20:1. The modified CNCs were 190 ± 40 nm in length and 21 ± 4 nm wide and displayed excellent colloidal stability, with a zeta potential of -35 mV. Turbidity titrations and rheological measurements revealed that the modified CNC possessed superior mucoadhesive properties compared to pristine CNC. Modification with tannic acid introduced additional functional groups for stronger hydrogen bond formation and hydrophobic interactions with mucin, which was confirmed by a large reduction in viscosity enhancement values in the presence of chemical blockers (urea and Tween80). The enhanced mucoadhesion of the modified CNC could be utilized for the fabrication of a mucoadhesive drug delivery system to promote sustainable aquaculture practices.
Collapse
Affiliation(s)
- Fatemah Haji
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue, Waterloo, ON N2L 3G1, Canada
| | - Dae Sung Kim
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue, Waterloo, ON N2L 3G1, Canada; Department of Biomedical Engineering, The University of Texas at Austin, 107 W. Dean Keeton St., Austin, TX 78712, USA
| | - Kam C Tam
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue, Waterloo, ON N2L 3G1, Canada.
| |
Collapse
|
7
|
Emami S, Ebrahimi M. Bioactive wound powders as wound healing dressings and drug delivery systems. POWDER TECHNOL 2023. [DOI: 10.1016/j.powtec.2023.118501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
|
8
|
Kulkarni R, Fanse S, Burgess DJ. Mucoadhesive drug delivery systems: a promising noninvasive approach to bioavailability enhancement. Part II: formulation considerations. Expert Opin Drug Deliv 2023; 20:413-434. [PMID: 36803264 DOI: 10.1080/17425247.2023.2181332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
INTRODUCTION Mucoadhesive drug delivery systems (MDDS) are specifically designed to interact and bind to the mucosal layer of the epithelium for localized, prolonged, and/or targeted drug delivery. Over the past 4 decades, several dosage forms have been developed for localized as well as systemic drug delivery at different anatomical sites. AREAS COVERED The objective of this review is to provide a detailed understanding of the different aspects of MDDS. Part II describes the origin and evolution of MDDS, followed by a discussion of the properties of mucoadhesive polymers. Finally, a synopsis of the different commercial aspects of MDDS, recent advances in the development of MDDS for biologics and COVID-19 as well as future perspectives are provided. EXPERT OPINION A review of the past reports and recent advances reveal MDDS as highly versatile, biocompatible, and noninvasive drug delivery systems. The rise in the number of approved biologics, the introduction of newer highly efficient thiomers, as well as the recent advances in the field of nanotechnology have led to several excellent applications of MDDS, which are predicted to grow significantly in the future.
Collapse
Affiliation(s)
- Radha Kulkarni
- School of Pharmacy, University of Connecticut, Storrs, CT, USA
| | - Suraj Fanse
- School of Pharmacy, University of Connecticut, Storrs, CT, USA
| | - Diane J Burgess
- School of Pharmacy, University of Connecticut, Storrs, CT, USA
| |
Collapse
|
9
|
Song Y, Abdella S, Afinjuomo F, Weir EJ, Tan JQE, Hill P, Page SW, Garg S. Physicochemical properties of otic products for Canine Otitis Externa: comparative analysis of marketed products. BMC Vet Res 2023; 19:39. [PMID: 36759841 PMCID: PMC9909939 DOI: 10.1186/s12917-023-03596-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 01/30/2023] [Indexed: 02/11/2023] Open
Abstract
BACKGROUND Otitis externa is a commonly diagnosed dermatological disorder in canines. The pathogens primarily involved in canine otitis externa (COE) include Staphylococcus pseudintermedius, Pseudomonas aeruginosa, Proteus mirabilis, and Malassezia pachydermatis. As COE tends to be superficial, medications delivered topically are often effective and practical in managing the condition. As such, there is a wide variety of approved topical products currently available in the market. The efficacy of topical dosage forms can be dependent on various factors such as the pharmacology of active constituents and the physicochemical properties of the formulation, including pH, viscosity, spreadability, and bio-adhesion. Currently, there is a lack of published literature available on the optimal properties of topical COE products. In this study, we compared the physicochemical properties of nine commercially available otic veterinarian products in Australia used clinically to manage COE. RESULTS Based on our comparative analysis, the pH (6.26 ± 0.04) of an aqueous-based product was similar to a healthy dog's external auditory canal. Products containing polymers exhibited higher viscosity and bio-adhesion. Spreadability was inversely related to viscosity and Osurnia ® a product with high viscosity demonstrated the lowest spreadability. Aqueous-based otic products showed better syringebility whereas oil-based systems required higher force to expel the products. Variability in droplet size was noted. Derm Otic, Baytril Otic, and Aurizon Ear Drops had the lower standard deviation which indicates they would give a more consistent dose. CONCLUSIONS Findings from this work provide considerations for industry researchers or formulation scientists working in the area of otic dosage formulations.
Collapse
Affiliation(s)
- Yunmei Song
- grid.1026.50000 0000 8994 5086Centre for Pharmaceutical Innovation(CPI), Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000 Australia
| | - Sadikalmahdi Abdella
- grid.1026.50000 0000 8994 5086Centre for Pharmaceutical Innovation(CPI), Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000 Australia
| | - Franklin Afinjuomo
- grid.1026.50000 0000 8994 5086Centre for Pharmaceutical Innovation(CPI), Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000 Australia
| | - Emily Josephine Weir
- grid.1026.50000 0000 8994 5086Centre for Pharmaceutical Innovation(CPI), Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000 Australia
| | - Jin Quan Eugene Tan
- grid.1026.50000 0000 8994 5086Centre for Pharmaceutical Innovation(CPI), Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000 Australia
| | - Peter Hill
- Small Animal Specialist Hospital, Adelaide, SA 5067 Australia
| | | | - Sanjay Garg
- Centre for Pharmaceutical Innovation(CPI), Clinical and Health Sciences, University of South Australia, Adelaide, SA, 5000, Australia.
| |
Collapse
|
10
|
Teaima MH, Eltabeeb MA, El-Nabarawi MA, Abdellatif MM. Utilization of propranolol hydrochloride mucoadhesive invasomes as a locally acting contraceptive: in-vitro, ex-vivo, and in-vivo evaluation. Drug Deliv 2022; 29:2549-2560. [PMID: 35912869 PMCID: PMC9347470 DOI: 10.1080/10717544.2022.2100514] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
It was found that propranolol hydrochloride (PNL), which is a beta-blocker used for hypertension treatment, has a potent spermicidal activity through local anesthetic activity or beta-blocking effect on sperm cells subsequently it could be used as a contraceptive remedy. This study aimed to entrap PNL into invasomes (INVs) and then formulate it as a locally acting contraceptive gel. PNL-loaded mucoadhesive INVs were prepared via the thin-film hydration technique. The D-optimal design was utilized to fabricate INVs employing lipid concentration (X1), terpenes concentration (X2), terpenes type (X3), and chitosan concentration (X4) as independent variables, while their impact was observed for entrapment efficiency percent (Y1; EE%), particle size (Y2; PS), zeta potential (Y3; ZP), and amount of drug released after 6 h (Y4; Q6h). Design Expert® was bestowed to nominate the desired formula. The selected INV was subjected to further studies and formulated into a mucoadhesive gel for ex-vivo and in-vivo investigations. The optimum INV showed a spherical shape with EE% of 65.01 ± 1.24%, PS of 243.75 ± 8.13 nm, PDI of 0.203 ± 0.01, ZP of 49.80 ± 0.42 mV, and Q6h of 53.16 ± 0.73%. Differential scanning calorimetry study asserted the capability of INVs to entrap PNL. Permeation studies confirmed the desired sustained effect of PNL-loaded INVs-gel compared to PNL-gel, INVs, and PNL solution. Sperm motility assay proved the potency of INVs-gel to inhibit sperm motility. Besides, the histopathological investigation verified the tolerability of the prepared INVs-gel. Taken together, the gained data justified the efficacy of PNL-loaded INVs-gel as a potential locally acting contraceptive.
Collapse
Affiliation(s)
- Mahmoud H Teaima
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo, Egypt
| | - Moaz A Eltabeeb
- Department of Industrial Pharmacy, College of Pharmaceutical Sciences and Drug Manufacturing, Misr University for Science and Technology, Giza, Egypt
| | - Mohamed A El-Nabarawi
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo, Egypt
| | - Menna M Abdellatif
- Department of Industrial Pharmacy, College of Pharmaceutical Sciences and Drug Manufacturing, Misr University for Science and Technology, Giza, Egypt
| |
Collapse
|
11
|
Stalder T, Zaiter T, El-Basset W, Cornu R, Martin H, Diab-Assaf M, Béduneau A. Interaction and toxicity of ingested nanoparticles on the intestinal barrier. Toxicology 2022; 481:153353. [DOI: 10.1016/j.tox.2022.153353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/05/2022] [Accepted: 10/13/2022] [Indexed: 11/28/2022]
|
12
|
Surendranath M, M R R, Parameswaran R. Recent advances in functionally modified polymers for mucoadhesive drug delivery. J Mater Chem B 2022; 10:5913-5924. [PMID: 35880449 DOI: 10.1039/d2tb00856d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel methods for the delivery of drugs other than the conventional method of oral administration have been a thrust area of research for a few decades. Mucoadhesive delivery of drugs opened up a new domain where rapid and patient-friendly delivery of drugs can be achieved. Delivery of drugs through the mucosal sites such as buccal, nasal, ocular, sublingual, rectal and vaginal facilitates bypassing the first-pass metabolism and the drug reaches the systemic circulation directly. This helps to increase the bioavailability of the drug. The study of the chemical characteristics of polymers with mucoadhesive properties and how the molecules or the pharmaceuticals are transported across the mucosa is very much needed for the advancement of research in this field. And at the same time, it is very pertinent to know about the anatomy and the physiology of the mucosal tissue and its variation in different regions of the body. In this review, we try to present a comprehensive understanding of relevant topics of mucoadhesion giving more emphasis on the mechanism of transport of drugs across mucosa, and different possible functional modifications of polymers to enhance the property of mucoadhesion.
Collapse
Affiliation(s)
- Medha Surendranath
- Division of Polymeric Medical Devices, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India.
| | - Rekha M R
- Division of Biosurface Technology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India
| | - Ramesh Parameswaran
- Division of Polymeric Medical Devices, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India.
| |
Collapse
|
13
|
A double crosslinking adhesion mechanism for developing tough hydrogel adhesives. Acta Biomater 2022; 150:199-210. [PMID: 35870776 DOI: 10.1016/j.actbio.2022.07.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 07/11/2022] [Accepted: 07/15/2022] [Indexed: 11/24/2022]
Abstract
Tough hydrogel adhesives that consist of a robust gel network and can strongly adhere to wet tissues have shown great promise as the next generation of bioadhesives. While a variety of chemistries can be utilized to construct the tough gel network, the covalent conjugation methods for tissue adhesion are still limited. Here we report, for the first time, the use of side product-free amine-thiolactone chemistry which initiates a double crosslinking adhesion mechanism to develop tough gel adhesives. Thiolactone groups can conjugate with tissue-surface amines via a ring-opening reaction. The resultant thiol end groups can be further crosslinked into disulfide linkages, enabling the formation of a robust and stable adhesion layer. The thiolactone-bearing tough hydrogel composed of methacrylate-modified gelatin, acrylic acid, and thiolacone acrylamide exhibited good biocompatibility and mechanical properties, and strong adhesion to various types of engineering solids and tissues. We also demonstrated its ability to function as a tissue sealant and drug depot. The novel adhesion mechanism will diversify future design of bioadhesives for hemostasis, drug delivery, tissue repair, and other applications. STATEMENT OF SIGNIFICANCE: Tough hydrogel adhesives with excellent tissue-adhesive and mechanical properties have demonstrated tremendous promise for hemostasis, tissue repair, and drug delivery applications. However, the covalent chemistry for tissue adhesion has been limited, which narrows the choice of materials for the design of bioadhesives and may pose a safety concern. Here, for the first time, we report the use of side product-free amine-thiolactone chemistry, which involves a double crosslinking adhesion mechanism, for developing tough hydrogel adhesives. We demonstrate that thiolactone-bearing tough hydrogels exhibit favorable biocompatibility and mechanical properties, and superior adhesion to both engineering solids and tissues. Our new adhesion technology will greatly facilitate future development of advanced bioadhesives for numerous biomedical applications.
Collapse
|
14
|
Construction and Evaluation of Chitosan-Based Nanoparticles for Oral Administration of Exenatide in Type 2 Diabetic Rats. Polymers (Basel) 2022; 14:polym14112181. [PMID: 35683851 PMCID: PMC9183037 DOI: 10.3390/polym14112181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 05/24/2022] [Accepted: 05/25/2022] [Indexed: 01/20/2023] Open
Abstract
Oral delivery of therapeutic peptides has been a daunting challenge due to poor transport across the tight junctions and susceptibility to enzymatic degradation in the gastrointestinal tract. Numerous advancement in nanomedicine has been made for the effective delivery of protein and peptide. Owing to the superior performance of chitosan in opening intercellular tight junctions of epithelium and excellent mucoadhesive properties, chitosan-based nanocarriers have recently garnered considerable attention, which was formulated in this paper to orally deliver the GLP-1 drug (Exenatide). Against this backdrop, we used chitosan (CS) polymers to encapsulate the exenatide, sodium tripolyphosphate (TPP) as the cross-linking agent and coated the exterior with sodium alginate (ALG) to impart the stability in an acidic environment. The chitosan/alginate nanoparticles (CS-TPP-ALG) functioned as a protective exenatide carrier, realized efficient cellular uptake and controlled release, leading to a steady hypoglycemic effect and a good oral bioavailability in vivo. Trimethyl chitosan (TMC), a chitosan derivative with stronger positive electrical properties was additionally selected as a substitute for chitosan to construct the TMC-TPP-ALG nanoparticle, and its oral peptide delivery capacity was explored in terms of both characterization and pharmacodynamics studies. Overall, our study demonstrated that functional chitosan/alginate nanoparticles can protect proteins from enzymatic degradation and enhance oral absorption, which presents important research value and application prospects.
Collapse
|
15
|
Novel Adhesive Nanocarriers Based on Mussel-Inspired Polyglycerols for the Application onto Mucosal Tissues. Pharmaceutics 2022; 14:pharmaceutics14050940. [PMID: 35631526 PMCID: PMC9144514 DOI: 10.3390/pharmaceutics14050940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 04/20/2022] [Accepted: 04/21/2022] [Indexed: 11/30/2022] Open
Abstract
A synthetic route for adhesive core-multishell (CMS) nanocarriers for application to the oral mucosa was established using mussel-inspired catechol moieties. The three CMS nanocarriers with 8%, 13%, and 20% catechol functionalization were evaluated for loading capacity using Nile red, showing an overall loading of 1 wt%. The ability of Nile red loaded and functionalized nanocarriers to bind to a moist mucosal surface was tested in two complementary adhesion assays under static and dynamic conditions using monolayers of differentiated gingival keratinocytes. Adhesion properties of functionalized nanocarriers were compared to the adhesion of the non-functionalized nanocarrier. In both assays, the CMS nanocarrier functionalized with 8% catechol exhibited the strongest adhesion compared to its catechol-free counterpart and the CMS nanocarriers functionalized with 13% and 20% catechol.
Collapse
|
16
|
Comparative Study of Ocular Pharmacokinetics of Topical 0.3% Gatifloxacin Eye Gel and Solution in Rabbits. Antibiotics (Basel) 2022; 11:antibiotics11040502. [PMID: 35453253 PMCID: PMC9027311 DOI: 10.3390/antibiotics11040502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 04/08/2022] [Accepted: 04/08/2022] [Indexed: 11/16/2022] Open
Abstract
Few articles have reported drug concentrations of different ophthalmic dosage forms in the ocular tissues. This study aimed to determine the ocular pharmacokinetics of gatifloxacin 0.3% eye gel (GTX-Gel) and gatifloxacin 0.3% eye solution (GTX-Sol) at different time intervals after topical instillation in rabbits. A total of 126 healthy New Zealand rabbits were included, of which six rabbits did not receive antibiotics (control group). The remaining rabbits were randomly divided into four groups. GTX-Gel and GTX-Sol (50 μL) were topically instilled every hour in groups A1 and B1, respectively, and every two hours in groups A2 and B2, respectively, for 12 h. Ocular tissues were collected 2, 4, 8, 12, and 24 h after administration. Gatifloxacin concentration was measured using high-performance liquid chromatography coupled with tandem mass spectrometry. The drug reached peak concentrations (Cmax) in all tissues at 8−12 h. With the same administration frequency, the Cmax was higher with GTX-Gel than with GTX-Sol (p < 0.05). Except for the iris-ciliary body, other ocular tissues did not show significant difference (p > 0.05) in gatifloxacin concentration between either pair of groups. Gatifloxacin ophthalmic gel was found to attain significantly higher concentrations than the ophthalmic solution in ocular tissues.
Collapse
|
17
|
Apolinário AC, Salata GC, de Souza MM, Chorilli M, Lopes LB. Rethinking Breast Cancer Chemoprevention: Technological Advantages and Enhanced Performance of a Nanoethosomal-Based Hydrogel for Topical Administration of Fenretinide. AAPS PharmSciTech 2022; 23:104. [PMID: 35381947 DOI: 10.1208/s12249-022-02257-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 03/22/2022] [Indexed: 12/31/2022] Open
Abstract
Herein, we developed an ethosomal hydrogel based on three types of ethosomes: simple, mixed (surfactant-based micelles and lipid vesicles) or binary (comprising two type of alcohols). Ethanol injection was employed for vesicles preparation, and sodium alginate, as gelling agent. We purposed the local-transdermal administration of the off-the-shelf retinoid fenretinide (FENR) for chemoprevention of breast cancer. Rheograms and flow index values for alginate dispersion (without ethosomes) and hydrogels containing simple, mixed or binary ethosomes suggested pseudoplastic behavior. An increase in the apparent viscosity was observed upon ethosome incorporation. The ethosomal hydrogel displayed increased bioadhesion compared to the alginate dispersion, suggesting that the lipid vesicles contribute to the gelling and bioadhesion processes. In the Hen's Egg Test-Chorioallantoic Membrane model, few spots of lysis and hemorrhage were observed for formulations containing simple (score of 2) and mixed vesicles (score 4), but not for the hydrogel based on the binary system, indicating its lower irritation potential. The binary ethosomal hydrogel provided a slower FENR in vitro release and delivered 2.6-fold less drug into viable skin layers compared to the ethosome dispersion, supporting the ability of the gel matrix to slow down drug release. The ethosomal hydrogel decreased by ~ five-fold the IC50 values of FENR in MCF-7 cells. In conclusion, binary ethosomal gels presented technological advantages, provided sustained drug release and skin penetration, and did not preclude drug cytotoxic effects, supporting their potential applicability as topical chemopreventive systems.
Collapse
|
18
|
Han Y, Jiang L, Shi H, Xu C, Liu M, Li Q, Zheng L, Chi H, Wang M, Liu Z, You M, Loh XJ, Wu YL, Li Z, Li C. Effectiveness of an ocular adhesive polyhedral oligomeric silsesquioxane hybrid thermo-responsive FK506 hydrogel in a murine model of dry eye. Bioact Mater 2022; 9:77-91. [PMID: 34820557 PMCID: PMC8586264 DOI: 10.1016/j.bioactmat.2021.07.027] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 07/21/2021] [Accepted: 07/21/2021] [Indexed: 12/14/2022] Open
Abstract
Dry eye is a common ocular disease that results in discomfort and impaired vision, impacting an individual's quality of life. A great number of drugs administered in eye drops to treat dry eye are poorly soluble in water and are rapidly eliminated from the ocular surface, which limits their therapeutic effects. Therefore, it is imperative to design a novel drug delivery system that not only improves the water solubility of the drug but also prolongs its retention time on the ocular surface. Herein, we develop a copolymer from mono-functional POSS, PEG, and PPG (MPOSS-PEG-PPG, MPEP) that exhibits temperature-sensitive sol-gel transition behavior. This thermo-responsive hydrogel improves the water solubility of FK506 and simultaneously provides a mucoadhesive, long-acting ocular delivery system. In addition, the FK506-loaded POSS hydrogel possesses good biocompatibility and significantly improves adhesion to the ocular surface. In comparison with other FK506 formulations and the PEG-PPG-FK506 (F127-FK506) hydrogel, this novel MPOSS-PEG-PPG-FK506 (MPEP-FK506) hydrogel is a more effective treatment of dry eye in the murine dry eye model. Therefore, delivery of FK506 in this POSS hydrogel has the potential to prolong drug retention time on the ocular surface, which will improve its therapeutic efficacy in the management of dry eye.
Collapse
Affiliation(s)
- Yi Han
- Fujian Provincial Key Laboratory of Ophthalmology and Visual Science & Ocular Surface and Corneal Diseases, Eye Institute & Affiliated Xiamen Eye Center, School of Medicine, Xiamen University, Xiamen, 361102, China
| | - Lu Jiang
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), Singapore, 138634, Singapore
| | - Huihui Shi
- School of Chemical Sciences, University of Chinese Academy of Science, Beijing, 100049, China
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Science, Ningbo, 315201, China
| | - Chenfang Xu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen, 361102, China
| | - Minting Liu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen, 361102, China
| | - Qingjian Li
- Fujian Provincial Key Laboratory of Ophthalmology and Visual Science & Ocular Surface and Corneal Diseases, Eye Institute & Affiliated Xiamen Eye Center, School of Medicine, Xiamen University, Xiamen, 361102, China
| | - Lan Zheng
- Fujian Provincial Key Laboratory of Ophthalmology and Visual Science & Ocular Surface and Corneal Diseases, Eye Institute & Affiliated Xiamen Eye Center, School of Medicine, Xiamen University, Xiamen, 361102, China
| | - Hong Chi
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, China
| | - Mingyue Wang
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, China
| | - Zuguo Liu
- Fujian Provincial Key Laboratory of Ophthalmology and Visual Science & Ocular Surface and Corneal Diseases, Eye Institute & Affiliated Xiamen Eye Center, School of Medicine, Xiamen University, Xiamen, 361102, China
| | - Mingliang You
- Hangzhou Cancer Institute, Key Laboratory of Clinical Cancer Pharmacology and Toxicology Research of Zhejiang Province, Affiliated Hangzhou Cancer Hospital, Zhejiang University School of Medicine, Hangzhou, 310002, China
| | - Xian Jun Loh
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Science, Ningbo, 315201, China
| | - Yun-Long Wu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen, 361102, China
| | - Zibiao Li
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), Singapore, 138634, Singapore
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - Cheng Li
- Fujian Provincial Key Laboratory of Ophthalmology and Visual Science & Ocular Surface and Corneal Diseases, Eye Institute & Affiliated Xiamen Eye Center, School of Medicine, Xiamen University, Xiamen, 361102, China
| |
Collapse
|
19
|
do Prado AH, Duarte JL, Filippo LDD, Victorelli FD, de Abreu Fantini MC, Peccinini RG, Chorilli M. Bioadhesive liquid crystal systems for octyl methoxycinnamate skin delivery. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
20
|
Suflet DM, Popescu I, Pelin IM, Ichim DL, Daraba OM, Constantin M, Fundueanu G. Dual Cross-Linked Chitosan/PVA Hydrogels Containing Silver Nanoparticles with Antimicrobial Properties. Pharmaceutics 2021; 13:1461. [PMID: 34575536 PMCID: PMC8465188 DOI: 10.3390/pharmaceutics13091461] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 09/03/2021] [Accepted: 09/09/2021] [Indexed: 02/08/2023] Open
Abstract
Stable chitosan/PVA-based hydrogels were obtained by combining covalent and physical cross-linking methods. As covalent cross-linkers, epoxy agents with different chain lengths were used, while freeze-thaw cycles were applied for additional physical cross-linking. The chemical structure of the hydrogel was examined by FTIR spectroscopy whereas the morphology was analyzed by SEM, showing well-defined pores with dimensions of around 50 μm in diameter. It was proved that gel fraction and the network morphology were deeply influenced by the synthesis conditions. Chitosan/PVA hydrogel showed a relative high swelling rate, reaching equilibrium in the first hour. The values obtained for the elastic modulus were relatively low (3-30 kPa); as a result, these hydrogels are soft and very flexible, and are ideal candidates for medical applications as wound or oral dressings. In addition, the natural antimicrobial activity of chitosan was enhanced by in situ generation of silver nanoparticles (AgNPs) under UV irradiation. The total amount of Ag from hydrogel was determined by elemental analyses and its crystalline state was confirmed by XRD. The CS/PVA hydrogels entrapped with AgNPs exhibited high inhibitory activity against S. aureus and K. pneumonia. The vitality tests confirmed the lack of cytotoxicity of CS/PVA hydrogels without and with AgNPs.
Collapse
Affiliation(s)
- Dana M. Suflet
- Petru Poni Institute of Macromolecular Chemistry, Aleea Grigore Ghica Voda 41A, 700487 Iasi, Romania; (I.P.); (I.M.P.); (G.F.)
| | - Irina Popescu
- Petru Poni Institute of Macromolecular Chemistry, Aleea Grigore Ghica Voda 41A, 700487 Iasi, Romania; (I.P.); (I.M.P.); (G.F.)
| | - Irina M. Pelin
- Petru Poni Institute of Macromolecular Chemistry, Aleea Grigore Ghica Voda 41A, 700487 Iasi, Romania; (I.P.); (I.M.P.); (G.F.)
| | - Daniela L. Ichim
- Faculty of Medical Dentistry, “Apollonia” University of Iasi, 2 Muzicii Str., 700511 Iasi, Romania; (D.L.I.); (O.M.D.)
| | - Oana M. Daraba
- Faculty of Medical Dentistry, “Apollonia” University of Iasi, 2 Muzicii Str., 700511 Iasi, Romania; (D.L.I.); (O.M.D.)
| | - Marieta Constantin
- Petru Poni Institute of Macromolecular Chemistry, Aleea Grigore Ghica Voda 41A, 700487 Iasi, Romania; (I.P.); (I.M.P.); (G.F.)
| | - Gheorghe Fundueanu
- Petru Poni Institute of Macromolecular Chemistry, Aleea Grigore Ghica Voda 41A, 700487 Iasi, Romania; (I.P.); (I.M.P.); (G.F.)
| |
Collapse
|
21
|
Karavasili C, Eleftheriadis GK, Gioumouxouzis C, Andriotis EG, Fatouros DG. Mucosal drug delivery and 3D printing technologies: A focus on special patient populations. Adv Drug Deliv Rev 2021; 176:113858. [PMID: 34237405 DOI: 10.1016/j.addr.2021.113858] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 06/07/2021] [Accepted: 07/01/2021] [Indexed: 02/08/2023]
Abstract
In the last decade, additive manufacturing (AM) technologies have revolutionized how healthcare provision is envisioned. The rapid evolution of these technologies has already created a momentum in the effort to address unmet personalized needs in large patient groups, especially those belonging to sensitive subgroup populations (e.g., paediatric, geriatric, visually impaired). At the same time, AM technologies have become a salient ally to overcome defined health challenges in drug formulation development by addressing not only the requirement of personalized therapy, but also problems related to lowering non-specific drug distribution and the risk of adverse reactions, enhancing drug absorption and bioavailability, as well as ease of administration and patient compliance. To this end, mucoadhesive drug delivery systems fabricated with the support of AM technologies provide competitive advantages over conventional dosage forms, aiming to entice innovation in drug formulation with special focus on sensitive patient populations.
Collapse
|
22
|
Cassano R, Curcio F, Mandracchia D, Trapani A, Trombino S. Gelatin and Glycerine-Based Bioadhesive Vaginal Hydrogel. Curr Drug Deliv 2021; 17:303-311. [PMID: 31995006 DOI: 10.2174/1567201817666200129130031] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 09/06/2019] [Accepted: 01/07/2020] [Indexed: 11/22/2022]
Abstract
AIM The work's aim was the preparation and characterization of a hydrogel based on gelatin and glycerine, useful for site-specific release of benzydamine, an anti-inflammatory drug, able to attenuate the inflammatory process typical of the vaginal infection. OBJECTIVE The obtained hydrogel has been characterized by Electronic Scanning Microscopy (SEM) and Differential Scanning Calorimetry (DSC). In addition, due to the precursor properties, the hydrogel exhibits a relevant mucoadhesive activity. METHODS The swelling degree was evaluated at two different pHs and at defined time intervals. In particular, phosphate buffers were used at pH 6.6, in order to mimic the typical conditions of infectious diseases at the vaginal level, particularly for HIV-seropositive pregnant women, and pH 4.6, to simulate the physiological environment. RESULTS The obtained results revealed that the hydrogel swells up well at both pHs. CONCLUSION Release studies conducted at both pathological and physiological pHs have shown that benzydamine is released at the level of the vaginal mucosa in a slow and gradual manner. These data support the hypothesis of the hydrogel use for the site-specific release of benzydamine in the vaginal mucosa.
Collapse
Affiliation(s)
- Roberta Cassano
- Department of Pharmacy, Health and Nutritional Sciences, Università della Calabria, Arcavacata di Rende, Cosenza, Italy
| | - Federica Curcio
- Department of Pharmacy, Health and Nutritional Sciences, Università della Calabria, Arcavacata di Rende, Cosenza, Italy
| | - Delia Mandracchia
- Department of Pharmacy, Universita degli Studi di Bari Aldo, Bari, Italy
| | - Adriana Trapani
- Department of Pharmacy, Universita degli Studi di Bari Aldo, Bari, Italy
| | - Sonia Trombino
- Department of Pharmacy, Health and Nutritional Sciences, Università della Calabria, Arcavacata di Rende, Cosenza, Italy
| |
Collapse
|
23
|
Ferreira PS, Victorelli FD, Rodero CF, Fortunato GC, Araújo VHS, Fonseca-Santos B, Bauab TM, Van Dijck P, Chorilli M. p-Coumaric acid loaded into liquid crystalline systems as a novel strategy to the treatment of vulvovaginal candidiasis. Int J Pharm 2021; 603:120658. [PMID: 33964336 DOI: 10.1016/j.ijpharm.2021.120658] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 04/08/2021] [Accepted: 04/25/2021] [Indexed: 12/30/2022]
Abstract
Vulvovaginal candidiasis (VVC) is an extremely common type of vaginal infection, which is mainly caused by Candida albicans. However, non-albicans Candida species are frequently more resistant to conventional antifungal agents and can represent up to 30% of cases. Due to side effects and increasing antifungal resistance presented by standard therapies, phenolic compounds, such as p-coumaric acid (p-CA), have been studied as molecules from natural sources with potential antifungal activity. p-CA is a poorly water-soluble compound, thus loading it into liquid crystals (LCs) may increase its solubility and effectiveness on the vaginal mucosa. Thereby, here we propose the development of mucoadhesive liquid crystalline systems with controlled release of p-CA, for the local treatment of VVC. Developed LCs consisted of fixed oily and aqueous phases (oleic acid and cholesterol (5:1) and poloxamer dispersion 16%, respectively), changing only the surfactant phase components (triethanolamine oleate (TEA-Oleate) or triethanolamine (TEA), the latter producing TEA-Oleate molecules when mixed with oleic acid). Systems were also diluted in artificial vaginal mucus (1:1 ratio) to mimic the vaginal environment and verify possible structural changes on formulations upon exposure to the mucosa. From the characterization assays, p-CA loaded TEA-Oleate systems presented mucoadhesive profile, liquid crystalline mesophases, well-organized structures and pseudoplastic behaviour, which are desirable parameters for topical formulations. Moreover, they were able to control the release of p-CA throughout the 12 h assay, as well as decrease its permeation into the vaginal mucosa. p-CA showed antifungal activity in vitro against reference strains of C. albicans (SC5314), C. glabrata (ATCC 2001) and C. krusei (ATCC 6258), and exhibited higher eradication of mature biofilms than amphotericin B and fluconazole. In vivo experiments demonstrated that the formulations reduced the presence of filamentous forms in the vaginal lavages and provided an improvement in swelling and redness present in the mice vaginal regions. Altogether, here we demonstrated the potential and feasibility of using p-CA loaded liquid crystalline systems as a mucoadhesive drug delivery system for topical treatment of VVC.
Collapse
Affiliation(s)
- P S Ferreira
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil.
| | - F D Victorelli
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - C F Rodero
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - G C Fortunato
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - V H S Araújo
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - B Fonseca-Santos
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - T M Bauab
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - P Van Dijck
- Laboratory of Molecular Cell Biology, Institute of Botany and Microbiology, KU Leuven, Leuven-Heverlee, Belgium; VIB-KU Leuven Center for Microbiology, Flanders, Belgium
| | - M Chorilli
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| |
Collapse
|
24
|
Characteristic Evaluation of Gel Formulation Containing Niosomes of Melatonin or Its Derivative and Mucoadhesive Properties Using ATR-FTIR Spectroscopy. Polymers (Basel) 2021; 13:polym13071142. [PMID: 33918458 PMCID: PMC8038236 DOI: 10.3390/polym13071142] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 03/27/2021] [Accepted: 03/29/2021] [Indexed: 01/28/2023] Open
Abstract
Chitosan or polyvinyl pyrrolidone (PVP) were used in combination with hydroxypropyl methylcellulose (HPMC) and poloxamer 407 (P407) as gelling agents for oral drug delivery. The performance interaction with mucin of chitosan-composed gel (F1) and PVP-composed gel (F2) was compared using attenuated total reflectance-Fourier-transform infrared (ATR-FTIR) spectroscopy at controlled temperatures of 25 and 37 °C for 1 and 5 min. F1 containing niosome-entrapped melatonin or its derivatives was investigated for mucoadhesive interaction on mucosa by ATR-FTIR spectroscopy under the same conditions. The results showed that F1-treated mucin gave a significantly lower amide I/amide II ratio than untreated mucin and F2-treated mucin did within 1 min, suggesting improved rapid affinity between mucin and chitosan. The spectra of mucosa treated with F1 incorporating niosomes of melatonin or its derivatives showed peak shifts at C=O (amide I), N-H (amide II), and carbohydrate regions and an associated decrease in the amide I/amide II ratio and increase in the carbohydrate/amide II ratio. These results indicated electrostatic interaction and hydrogen bonding between chitosan and mucin on the mucosa. In conclusion, the molecular interaction between gels and mucin/mucosa detected at amide I and amide II of proteins and the carbohydrate region could lead to an improved mucoadhesive property of the gel on the mucosa.
Collapse
|
25
|
Kaur L, Thakur AK, Kumar P, Singh I. Synthesis and characterization of Chitosan-Catechol conjugates: Development and in vitro, in silico and in vivo evaluation of mucoadhesive pellets of lafutidine. J BIOACT COMPAT POL 2021. [DOI: 10.1177/0883911521997849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Present study was aimed to synthesize and characterize Chitosan-Catechol conjugates and to design and develop mucoadhesive pellets loaded with lafutidine. SEM images indicated the presence of fibrous structures responsible for enhanced mucoadhesive potential of Chitosan-Catechol conjugates. Thermodynamic stability and amorphous nature of conjugates was confirmed by DSC and XRD studies respectively. Rheological studies were used to evaluate polymer mucin interactions wherein strong interactions between Chitosan-Catechol conjugate and mucin was observed in comparison to pristine chitosan and mucin. The mucoadhesion potential of Chitosan-Catechol (Cht-C) versus Chitosan (Cht) was assessed in silico using molecular mechanics simulations and the results obtained were compared with the in vitro and ex vivo results. Cht-C/mucin demonstrated much higher energy stabilization (∆E ≈ −65 kcal/mol) as compared to Cht/mucin molecular complex. Lafutidine-loaded pellets were prepared from Chitosan (LPC) and Chitosan-Catechol conjugates (LPCC) and were evaluated for various physical properties viz. flow, circularity, roundness, friability, drug content, particle size and percent mucoadhesion. In vitro drug release studies on LPC and LPCC pellets were performed for computing t50%, t90% and mean dissolution time. The values of release exponent from Korsmeyer-Peppas model was reported to be 0.443 and 0.759 for LPC and LPCC pellets suggesting Fickian and non-Fickian mechanism representing drug release, respectively. In vivo results depicted significant controlled release and enhanced residence of the drug after being released from the chitosan-catechol coated pellets. Chitosan-Catechol conjugates were found to be a promising biooadhesive polymer for the development of various mucoadhesive formulations.
Collapse
Affiliation(s)
- Loveleen Kaur
- Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, India
| | - Ajay Kumar Thakur
- Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, India
| | - Pradeep Kumar
- Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, Gauteng, South Africa
| | - Inderbir Singh
- Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, India
| |
Collapse
|
26
|
Salah E, Abouelfetouh MM, Pan Y, Chen D, Xie S. Solid lipid nanoparticles for enhanced oral absorption: A review. Colloids Surf B Biointerfaces 2020; 196:111305. [DOI: 10.1016/j.colsurfb.2020.111305] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/24/2020] [Accepted: 08/01/2020] [Indexed: 12/26/2022]
|
27
|
Nafee N, Ameen AER, Abdallah OY. Patient-Friendly, Olfactory-Targeted, Stimuli-Responsive Hydrogels for Cerebral Degenerative Disorders Ensured > 400% Brain Targeting Efficiency in Rats. AAPS PharmSciTech 2020; 22:6. [PMID: 33222021 DOI: 10.1208/s12249-020-01872-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 10/28/2020] [Indexed: 01/01/2023] Open
Abstract
Non-invasive brain therapy for chronic neurological disorders is in high demand. Vinpocetine (VIN) tablets for cerebrovascular degenerative disorders ensued < 7% oral bioavailability. The olfactory pathway (providing direct brain access) can improve VIN pharmacokinetic/pharmacodynamic profile. In this context, VIN hydrogels based on temperature-, pH-, and ion-triggered gelation in physiological milieu were formulated. Poloxamer-chitosan (PLX-CS) and carbopol-HPMC-alginate (CP-HPMC-SA) systems were optimized for appropriate gelation time, temperature, and pH. PLX-CS-hydrogels exhibited strong mucoadhesion for > 8 h, while CP-HPMC-SA hydrogels were mucoadhesive in simulated nasal fluid, owing to pH and ion-activated gelation. Along with prolonged mucosal residence, hydrogels confirmed sustained VIN release (> 24 h), especially from CP-HPMC-SA hydrogels. As proof of concept, brain exposure of intranasal VIN hydrogels was investigated in rats versus VIN-IV bolus. PLX-CS provided 146% increase in AUC0-30 and 3-fold maximum brain concentration (BCmax) relative to IV bolus. BCmax was reached after 4 h versus 1 h (IV bolus). CP-HPMC-SA hydrogel showed superior brain targeting efficiency (460%) and brain direct transport percentage (78.23%). VIN plasma pharmacokinetics confirmed 45-60% reduction in AUCplasma versus IV bolus, while PCmax of CP-HPMC-SA and PLX-CS represented 17 and 28% that of IV bolus, respectively. Olfactory-targeted hydrogels grant effective, sustainable VIN brain level with minimal systemic exposure, thus, assuring lower dose, dose frequency, side effects, and per se better patient compliance.
Collapse
|
28
|
El‐Mayta R, Zhang R, Shepherd SJ, Wang F, Billingsley MM, Dudkin V, Klein D, Lu HD, Mitchell MJ. A Nanoparticle Platform for Accelerated In Vivo Oral Delivery Screening of Nucleic Acids. ADVANCED THERAPEUTICS 2020. [DOI: 10.1002/adtp.202000111] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Rakan El‐Mayta
- Department of Bioengineering University of Pennsylvania Philadelphia PA 19104 USA
| | - Rui Zhang
- Department of Bioengineering University of Pennsylvania Philadelphia PA 19104 USA
| | - Sarah J. Shepherd
- Department of Bioengineering University of Pennsylvania Philadelphia PA 19104 USA
| | - Feng Wang
- Center for Computational and Genomic Medicine The Children's Hospital of Philadelphia Philadelphia PA 19104 USA
| | | | - Vadim Dudkin
- Janssen Research & Development Spring House PA 19477 USA
| | - Donna Klein
- Janssen Research & Development Spring House PA 19477 USA
| | - Hoang D. Lu
- Janssen Research & Development Spring House PA 19477 USA
| | - Michael J. Mitchell
- Department of Bioengineering University of Pennsylvania Philadelphia PA 19104 USA
- Abramson Cancer Center Perelman School of Medicine University of Pennsylvania Philadelphia PA 19104 USA
- Institute for Immunology Perelman School of Medicine University of Pennsylvania Philadelphia PA 19104 USA
- Cardiovascular Institute Perelman School of Medicine University of Pennsylvania Philadelphia PA 19104 USA
- Institute for Regenerative Medicine Perelman School of Medicine University of Pennsylvania Philadelphia PA 19104 USA
| |
Collapse
|
29
|
Basahih TS, Alamoudi AA, El-Say KM, Alhakamy NA, Ahmed OAA. Improved Transmucosal Delivery of Glimepiride via Unidirectional Release Buccal Film Loaded With Vitamin E TPGS-Based Nanocarrier. Dose Response 2020; 18:1559325820945164. [PMID: 32782450 PMCID: PMC7401050 DOI: 10.1177/1559325820945164] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 06/19/2020] [Accepted: 06/29/2020] [Indexed: 12/02/2022] Open
Abstract
Glimepiride (GMD) is a hypoglycemic agent that has variation in bioavailability for its unexpected absorption. Glimepiride was formulated in a buccal film loaded with a nanobased formulation to enhance its absorption via buccal mucosa. Nanostructured lipid carriers (NLCs) and d-α-tocopherol polyethylene glycol 1000 succinate-based micelles enhance GMD solubility and improve its permeation through the buccal mucosa. The formulation variables were optimized using a Box-Behnken design. These factors, such as the percent of micelles relative to NLC (X1), the percent of Carbopol (X2), and the percent of permeation enhancer (X3), were investigated for their effect on the initial release (Y1) and the cumulative release after 6 hours (Y2). The optimum levels for X1, X2, and X3 were 100%, 0.05%, and 1.8%, respectively. The optimized formulation revealed that the permeation of GMD from the film was in favor of micelles. This optimized film was then coated with ethyl cellulose to direct the release only through the buccal mucosa. The optimized unidirectional GMD transmucosal film showed a release of 93.9% of GMD content at 6 hours compared to 60.41% of GMD release from the raw GMD film. This finding confirmed the suitability of transmucosal delivery of GMD via the buccal mucosa.
Collapse
Affiliation(s)
- Tahani S. Basahih
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Abdullah A. Alamoudi
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Khalid M. El-Say
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Nabil A. Alhakamy
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
- Center of Excellence for Drug Research and Pharmaceutical Industries, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Osama A. A. Ahmed
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
- Osama A. A. Ahmed, Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
| |
Collapse
|
30
|
Wright L, Barnes TJ, Prestidge CA. Oral delivery of protein-based therapeutics: Gastroprotective strategies, physiological barriers and in vitro permeability prediction. Int J Pharm 2020; 585:119488. [PMID: 32504774 DOI: 10.1016/j.ijpharm.2020.119488] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 05/26/2020] [Accepted: 05/28/2020] [Indexed: 02/08/2023]
Abstract
The number of biological molecules emerging as therapeutics is growing exponentially due to their higher specificity and tolerability profiles compared to small molecules. Despite this, their traditionally parenteral delivery often results in poor patient compliance and incomplete treatment. Current research is focussed on developing effective oral delivery strategies to facilitate administration of these biomolecules, however no universal method exists to simultaneously provide gastric protection as well as enhance transport across the gastrointestinal epithelium. Furthermore, for efficient formulation development it is imperative that we can reliably analyse permeability of biomolecules through the gastrointestinal tract, highlighting the importance of the continual development and ongoing evaluation of in vitro predictive permeability tools. Here, we review the physiological obstacles associated with peptide and protein delivery throughout the gastrointestinal tract. Furthermore, we highlight methods utilised to circumvent these barriers and promote improved intestinal permeability. Lastly, we explore in vitro models employed to predict epithelial transport. Key findings highlight the need to carefully understand gastrointestinal physiology, allowing specific engineering of oral delivery systems for biomolecules. Significant importance is placed upon understanding enzymatic degradation susceptibility as well as uptake mechanisms for particulate and protein-based therapeutics for the development of successful oral protein delivery platforms.
Collapse
Affiliation(s)
- Leah Wright
- School of Pharmacy and Medical Science, University of South Australia, 5001, Australia; ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, UniSA, Australia
| | - Timothy J Barnes
- School of Pharmacy and Medical Science, University of South Australia, 5001, Australia
| | - Clive A Prestidge
- School of Pharmacy and Medical Science, University of South Australia, 5001, Australia; ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, UniSA, Australia.
| |
Collapse
|
31
|
Cui X, Bao L, Wang X, Chen C. The Nano-Intestine Interaction: Understanding the Location-Oriented Effects of Engineered Nanomaterials in the Intestine. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1907665. [PMID: 32347646 DOI: 10.1002/smll.201907665] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 02/13/2020] [Accepted: 02/18/2020] [Indexed: 06/11/2023]
Abstract
Engineered nanomaterials (ENMs) are used in food additives, food packages, and therapeutic purposes owing to their useful properties, Therefore, human beings are orally exposed to exogenous nanomaterials frequently, which means the intestine is one of the primary targets of nanomaterials. Consequently, it is of great importance to understand the interaction between nanomaterials and the intestine. When nanomaterials enter into gut lumen, they inevitably interact with various components and thereby display different effects on the intestine based on their locations; these are known as location-oriented effects (LOE). The intestinal LOE confer a new biological-effect profile for nanomaterials, which is dependent on the involvement of the following biological processes: nano-mucus interaction, nano-intestinal epithelial cells (IECs) interaction, nano-immune interaction, and nano-microbiota interaction. A deep understanding of NM-induced LOE will facilitate the design of safer NMs and the development of more efficient nanomedicine for intestine-related diseases. Herein, recent progress in this field is reviewed in order to better understand the LOE of nanomaterials. The distant effects of nanomaterials coupling with microbiota are also highlighted. Investigation of the interaction of nanomaterials with the intestine will stimulate other new research areas beyond intestinal nanotoxicity.
Collapse
Affiliation(s)
- Xuejing Cui
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety & CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Lin Bao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety & CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaoyu Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety & CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chunying Chen
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety & CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
- GBA Research Innovation Institute for Nanotechnology, Guangdong, 510700, China
| |
Collapse
|
32
|
Castañeda PS, Domínguez Delgado CL, Cruz IMR, Contreras LMM, Trinidad EMM, Cervantes ML, Escobar-Chávez JJ. Development of Poly (Methyl vinyl ether-alt-maleic acid) Microneedles for Transdermal Delivery of Atorvastatin Calcium. Curr Pharm Biotechnol 2020; 21:852-861. [PMID: 32065098 DOI: 10.2174/1389201021666200217103302] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 11/07/2019] [Accepted: 01/24/2020] [Indexed: 02/06/2023]
Abstract
AIMS Biodegradable polymeric microneedles containing atorvastatin calcium were developed in order to improve the percutaneous absorption of the drug, useful for the treatment of hypercholesterolemia. BACKGROUND The use of physical enhancers like microneedles have shown good results to increase the delivery of drugs through the skin, the use of microneedles has very important advantages for transdermal drug delivery, for example, they are painless, easy to use and safe, they increase time interval of drug activity, dose, and reductions in adverse reactions, they also offer, the facility to remove the system instantly of the skin. OBJECTIVE Develop polymer microneedles loaded with a calcium atorvastatin and evaluate them by Differential Scanning Calorimetry (DSC), Scanning Electron Microscopy (SEM), bioadhesion, postwetting- bioadhesion, breaking strength, drug release test and in vitro percutaneous absorption studies to demonstrate the use of microneedles atorvastatin is able to cross the skin. METHODS The microneedles were made with poly (methyl vinyl ether-alt-maleic acid) as biodegradable polymer using the technique of casting in solution in a mold. After solidification these microneedles were characterized by Differential Scanning Calorimetry (DSC), Scanning Electron Microscopy (SEM), bioadhesion, post-wetting-bioadhesion, breaking strength, drug release test and in vitro percutaneous absorption studies. RESULTS In general, the performances were satisfactory for optimal formulation in terms of DSC with no interactions between drug and excipients, SEM shows microneedles with a conical shape, bioadhesion of 1570 g.f, post wetting-bioadhesion of 1503.4 g.f, breaking strength of 1566.7g.f that is sufficient to disrupt Stratum corneum, good drug release and a flux of 33.4 μg/cm2*h with a tLag of 15.14 h for the in vitro percutaneous absorption. CONCLUSION The results indicate that it is possible to generate microneedles to increase the percutaneous absorption of calcium atorvastatin transdermally, with the potential to be used as an alternative to the oral route for the treatment of dyslipidemias.
Collapse
Affiliation(s)
- Pablo S Castañeda
- Unidad de Investigacion Multidisciplinaria. Laboratorio 12: Sistemas transdermicos, Facultad de Estudios Superiores Cuautitlan-Universidad Nacional Autonoma de Mexico (FESC-UNAM), Carretera Cuautitlan Teoloyucan km 2.5, San Sebastian Xhala C.P. 54714, Cuautitlan Izcalli, Mexico
| | - Clara L Domínguez Delgado
- College of Pharmacy, The University of Texas at Austin, 2409 West University Avenue, PHR 4.214, Austin, Texas 78712, United States
| | - Isabel M R Cruz
- Unidad de Investigacion y Ensenanza, Hospital Regional de Alta Especialidad de Zumpango, Autopista Zumpango-Jilotzingo # 400, Barrio de Santiago 2a seccion, C.P. 55600, Zumpango, Mexico
| | - Luz M M Contreras
- Departamento de Sistemas Biologicos, Universidad Autonoma Metropolitana-Xochimilco, Calzada del Hueso 1100, Colonia Villa Quietud, C.P. 04960, Ciudad de Mexico, United States
| | - Eva M M Trinidad
- Area Academica de Medicina, Universidad Autonoma del Estado de Hidalgo, Circuito ex-Hacienda de la Concepcion, Lote 17, San Juan Tilcuautla, Municipio de San Agustin Tlaxiaca, C.P. 42160, Estado de Hidalgo, Mexico
| | - Miriam L Cervantes
- Unidad de Investigacion Multidisciplinaria. Laboratorio 12: Sistemas transdermicos, Facultad de Estudios Superiores Cuautitlan-Universidad Nacional Autonoma de Mexico (FESC-UNAM), Carretera Cuautitlan Teoloyucan km 2.5, San Sebastian Xhala C.P. 54714, Cuautitlan Izcalli, Mexico
| | - José J Escobar-Chávez
- Unidad de Investigacion Multidisciplinaria. Laboratorio 12: Sistemas transdermicos, Facultad de Estudios Superiores Cuautitlan-Universidad Nacional Autonoma de Mexico (FESC-UNAM), Carretera Cuautitlan Teoloyucan km 2.5, San Sebastian Xhala C.P. 54714, Cuautitlan Izcalli, Mexico
| |
Collapse
|
33
|
Characterization of dexamethasone loaded collagen-chitosan sponge and in vitro release study. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2019.101449] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
34
|
Machado RM, Tomás M, Palmeira-de-Oliveira A, Martinez-de-Oliveira J, Palmeira-de-Oliveira R. The vaginal sheet: an innovative form of vaginal film for the treatment of vaginal infections. Drug Dev Ind Pharm 2020; 46:135-145. [PMID: 31893929 DOI: 10.1080/03639045.2019.1711386] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Objective: To develop and characterize a new form of vaginal film.Significance: This formulation is intended to overcome some known limitations of traditional dosage forms. It has an absorptive intention to control symptoms and to improve the treatment of vaginal infections characterized by excessive fluid. The vaginal sheet is a thick drug delivery system easy to manipulate, nontoxic and composed by biocompatible macromolecules and polymers, such as gelatin and chitosan.Methods: The sheets were prepared by formulating gelatin or chitosan based gels isolated or in combination, in association with a plasticizer. Gels were subsequently lyophilized. Different proportions of polymer:plasticizer were tested. Lactose was used as a surrogate to study powder incorporation in the formulation. All formulations were analyzed regarding their organoleptic characteristics, texture (hardness and resilience), in vitro absorption efficiency of vaginal fluid simulant - VFS (pH 4 and 5), pH and acid-buffering capacity.Results: Different properties were obtained by varying polymer and plasticizer proportions. Combinations including gelatin with propylene glycol showed the best organoleptic characteristics. The best proportions were 4:3 and 4:5. Up to 10% of powder was successfully incorporated in the formulation. Hardness and resilience of formulations were largely dependent on the concentration of plasticizer. Absorption of vaginal fluid was found to be highly efficient, especially at pH 5. Buffering capacity, upon dilution in normal saline and VFS, was generally higher for VFS pH 4.Conclusions: The vaginal sheet is a promising solid drug delivery system able to further incorporate drugs to treat vaginal clinical conditions characterized by excessive fluid.
Collapse
Affiliation(s)
- Rita Monteiro Machado
- CICS, UBI - Health Sciences Research Center, Faculty of Health Sciences, University of Beira Interior, Covilhã, Portugal.,Labfit, HPRD - Health Products Research and Development Lda, Covilhã, Portugal
| | - Mariana Tomás
- CICS, UBI - Health Sciences Research Center, Faculty of Health Sciences, University of Beira Interior, Covilhã, Portugal
| | - Ana Palmeira-de-Oliveira
- CICS, UBI - Health Sciences Research Center, Faculty of Health Sciences, University of Beira Interior, Covilhã, Portugal.,Labfit, HPRD - Health Products Research and Development Lda, Covilhã, Portugal
| | - José Martinez-de-Oliveira
- CICS, UBI - Health Sciences Research Center, Faculty of Health Sciences, University of Beira Interior, Covilhã, Portugal
| | - Rita Palmeira-de-Oliveira
- CICS, UBI - Health Sciences Research Center, Faculty of Health Sciences, University of Beira Interior, Covilhã, Portugal.,Labfit, HPRD - Health Products Research and Development Lda, Covilhã, Portugal.,Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
| |
Collapse
|
35
|
Micro and nanoscale technologies in oral drug delivery. Adv Drug Deliv Rev 2020; 157:37-62. [PMID: 32707147 PMCID: PMC7374157 DOI: 10.1016/j.addr.2020.07.012] [Citation(s) in RCA: 101] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 07/13/2020] [Accepted: 07/17/2020] [Indexed: 12/25/2022]
Abstract
Oral administration is a pillar of the pharmaceutical industry and yet it remains challenging to administer hydrophilic therapeutics by the oral route. Smart and controlled oral drug delivery could bypass the physiological barriers that limit the oral delivery of these therapeutics. Micro- and nanoscale technologies, with an unprecedented ability to create, control, and measure micro- or nanoenvironments, have found tremendous applications in biology and medicine. In particular, significant advances have been made in using these technologies for oral drug delivery. In this review, we briefly describe biological barriers to oral drug delivery and micro and nanoscale fabrication technologies. Micro and nanoscale drug carriers fabricated using these technologies, including bioadhesives, microparticles, micropatches, and nanoparticles, are described. Other applications of micro and nanoscale technologies are discussed, including fabrication of devices and tissue engineering models to precisely control or assess oral drug delivery in vivo and in vitro, respectively. Strategies to advance translation of micro and nanotechnologies into clinical trials for oral drug delivery are mentioned. Finally, challenges and future prospects on further integration of micro and nanoscale technologies with oral drug delivery systems are highlighted.
Collapse
|
36
|
Mittal N, Kaur G. Leucaena leucocephala (Lam.) galactomannan nanoparticles: Optimization and characterization for ocular delivery in glaucoma treatment. Int J Biol Macromol 2019; 139:1252-1262. [DOI: 10.1016/j.ijbiomac.2019.08.107] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 07/31/2019] [Accepted: 08/12/2019] [Indexed: 02/07/2023]
|
37
|
Tang B, Shan J, Yuan T, Xiao Y, Liang J, Fan Y, Zhang X. Hydroxypropylcellulose enhanced high viscosity endoscopic mucosal dissection intraoperative chitosan thermosensitive hydrogel. Carbohydr Polym 2019; 209:198-206. [DOI: 10.1016/j.carbpol.2018.12.103] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 11/27/2018] [Accepted: 12/31/2018] [Indexed: 01/15/2023]
|
38
|
Comparison of the Effect of Bioadhesive Polymers on Stability and Drug Release Kinetics of Biocompatible Hydrogels for Topical Application of Ibuprofen. J Pharm Sci 2019; 108:1326-1333. [DOI: 10.1016/j.xphs.2018.10.054] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 10/25/2018] [Accepted: 10/25/2018] [Indexed: 12/25/2022]
|
39
|
Abdulkarim M, Sharma PK, Gumbleton M. Self-emulsifying drug delivery system: Mucus permeation and innovative quantification technologies. Adv Drug Deliv Rev 2019; 142:62-74. [PMID: 30974131 DOI: 10.1016/j.addr.2019.04.001] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 04/03/2019] [Accepted: 04/05/2019] [Indexed: 12/14/2022]
Abstract
Mucus is a dynamic barrier which covers and protects the underlying mucosal epithelial membrane against bacteria and foreign particles. This protection mechanism extends to include therapeutic macromolecules and nanoparticles (NPs) through trapping of these particles. Mucus is not only a physical barrier that limiting particles movements based on their sizes but it selectively binds with particles through both hydrophilic and lipophilic interactions. Therefore, nano-carriers for mucosal delivery should be designed to eliminate entrapment by the mucus barrier. For this reason, different strategies have been approached for both solid nano-carriers and liquid core nano-carriers to synthesise muco-diffusive nano-carrier. Among these nano-strategies, Self-Emulsifying Drug Delivery System (SEDDS) was recognised as very promising nano-carrier for mucus delivery. The system was introduced to enhance the dissolution and bioavailability of orally administered insoluble drugs. SEDDS has shown high stability against intestinal enzymatic activity and more importantly, relatively rapid permeation characteristics across mucus barrier. The high diffusivity of SEDDS has been tested using various in vitro measurement techniques including both bulk and individual measurement of droplets diffusion within mucus. The selection and processing of an optimum in vitro technique is of great importance to avoid misinterpretation of the diffusivity of SEDDS through mucus barrier. In conclusion, SEDDS is a system with high capacity to diffuse through intestinal mucus even though this system has not been studied to the same extent as solid nano-carriers.
Collapse
Affiliation(s)
- Muthanna Abdulkarim
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, UK
| | - Peeyush Kumar Sharma
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, UK; Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar 140001, Punjab, India
| | - Mark Gumbleton
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, UK.
| |
Collapse
|
40
|
Estrellas KM, Fiecas M, Azagury A, Laulicht B, Cho DY, Mancini A, Reineke J, Furtado S, Mathiowitz E. Time-dependent mucoadhesion of conjugated bioadhesive polymers. Colloids Surf B Biointerfaces 2019; 173:454-469. [PMID: 30326362 DOI: 10.1016/j.colsurfb.2018.10.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 10/01/2018] [Accepted: 10/04/2018] [Indexed: 11/19/2022]
Abstract
The time-dependent bioadhesive performance of various polymers was evaluated using a texture analyzer apparatus and freshly excised rat small intestinal tissue. A series of novel bioadhesive polymers were prepared by conjugating L-phenylalanine, L-tyrosine, and L-DOPA to either a low molecular weight poly (butadiene-maleic anhydride) or a high molecular weight poly (ethylene-maleic anhydride). Bioadhesive force was characterized as a function of time relative to polycarbophil, a slightly cross-linked poly (acrylic acid)-derivative, revealing different fracture strengths and tensile work for each of the six backbone-side chain conjugations that were studied. While polycarbophil showed a rapid and significant loss of bioadhesion over the testing period, the newly developed synthetic polymers were able to maintain their bioadhesive performance over the course of 91 min with the overall magnitude of bioadhesion corresponding to the hydrogen bonding potential of the associated side chains. These results highlight the potential of these polymers for use in the development of more effective bioadhesive oral drug delivery systems.
Collapse
Affiliation(s)
- Kenneth M Estrellas
- Department of Molecular Pharmacology, Physiology and Biotechnology, Brown University, Providence, RI, 02912, USA
| | - Mark Fiecas
- Department of Statistics, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Aharon Azagury
- Department of Molecular Pharmacology, Physiology and Biotechnology, Brown University, Providence, RI, 02912, USA
| | - Bryan Laulicht
- Department of Molecular Pharmacology, Physiology and Biotechnology, Brown University, Providence, RI, 02912, USA
| | - Daniel Y Cho
- Department of Molecular Pharmacology, Physiology and Biotechnology, Brown University, Providence, RI, 02912, USA
| | - Alexis Mancini
- Department of Molecular Pharmacology, Physiology and Biotechnology, Brown University, Providence, RI, 02912, USA
| | - Joshua Reineke
- Pharmaceutical Sciences Faculty Research, South Dakota State University, Box 2202C, Brookings, SD, 57007, USA
| | - Stacia Furtado
- Department of Molecular Pharmacology, Physiology and Biotechnology, Brown University, Providence, RI, 02912, USA
| | - Edith Mathiowitz
- Department of Molecular Pharmacology, Physiology and Biotechnology, Brown University, Providence, RI, 02912, USA.
| |
Collapse
|
41
|
Abbas H, Refai H, El Sayed N. Superparamagnetic Iron Oxide–Loaded Lipid Nanocarriers Incorporated in Thermosensitive In Situ Gel for Magnetic Brain Targeting of Clonazepam. J Pharm Sci 2018; 107:2119-2127. [DOI: 10.1016/j.xphs.2018.04.007] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 02/20/2018] [Accepted: 04/06/2018] [Indexed: 10/17/2022]
|
42
|
Huckaby JT, Lai SK. PEGylation for enhancing nanoparticle diffusion in mucus. Adv Drug Deliv Rev 2018; 124:125-139. [PMID: 28882703 DOI: 10.1016/j.addr.2017.08.010] [Citation(s) in RCA: 230] [Impact Index Per Article: 38.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Revised: 08/29/2017] [Accepted: 08/30/2017] [Indexed: 02/07/2023]
Abstract
The viscoelastic mucus secretions coating exposed organs such as the lung airways and the female reproductive tract can trap and quickly eliminate not only foreign pathogens and ultrafine particles but also particle-based drug delivery systems, thus limiting sustained and targeted drug delivery at mucosal surfaces. To improve particle distribution across the mucosa and enhance delivery to the underlying epithelium, many investigators have sought to develop nanoparticles capable of readily traversing mucus. The first synthetic nanoparticles shown capable of rapidly penetrating physiological mucus secretions utilized a dense coating of polyethylene glycol (PEG) covalently grafted onto the surface of preformed polymeric nanoparticles. In the decade since, PEG has become the gold standard in engineering mucus-penetrating drug carriers for sustained and targeted drug delivery to the lungs, gastrointestinal tract, eyes, and female reproductive tract. This review summarizes the history of the development of various PEG-based mucus-penetrating particles, and highlights the key physicochemical properties of PEG coatings and PEGylation strategies to achieve muco-inert PEG coatings on nanoparticle drug carriers for improved drug and gene delivery at mucosal surfaces.
Collapse
|
43
|
Calixto GMF, Duque C, Aida KL, dos Santos VR, Massunari L, Chorilli M. Development and characterization of p1025-loaded bioadhesive liquid-crystalline system for the prevention of Streptococcus mutans biofilms. Int J Nanomedicine 2017; 13:31-41. [PMID: 29296084 PMCID: PMC5741066 DOI: 10.2147/ijn.s147553] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Formation of a dental biofilm by Streptococcus mutans can cause dental caries, and remains a costly health problem worldwide. Recently, there has been a growing interest in the use of peptidic drugs, such as peptide p1025, analogous to the fragments 1025-1044 of S. mutans cellular adhesin, responsible for the adhesion and formation of dental biofilm. However, peptides have physicochemical characteristics that may affect their biological action, limiting their clinical performance. Therefore, drug-delivery systems, such as a bioadhesive liquid-crystalline system (LCS), may be attractive strategies for peptide delivery. Potentiation of the action of LCS can be achieved with the use of bioadhesive polymers to prolong their residence on the teeth. In line with this, three formulations - polyoxypropylene-(5)-polyoxyethylene-(20)-cetyl alcohol, oleic acid, and Carbopol C974P in different combinations (F1C, F2C, and F3C) were developed to observe the influence of water in the LCS, with the aim of achieving in situ gelling in the oral environment. These formulations were assessed by polarized light microscopy, small-angle X-ray scattering, rheological analysis, and in vitro bioadhesion analysis. Then, p1025 and a control (chlorhexidine) were incorporated into the aqueous phase of the formulation (F + p1025 and F + chlorhexidine), to determine their antibiofilm effect and toxicity on epithelial cells. Polarized light microscopy and small-angle X-ray scattering showed that F1C and F2C were LCS, whereas F3C was a microemulsion. F1C and F2C showed pseudoplastic behavior and F3C Newtonian behavior. F1C showed the highest elastic and bioadhesive characteristics compared to other formulations. Antibiofilm effects were observed for F + p1025 when applied in the surface-bound salivary phase. The p1025-loaded nanostructured LCS presented limited cytotoxicity and effectively reduced S. mutans biofilm formation, and could be a promising p1025-delivery strategy to prevent the formation of S. mutans dental biofilm.
Collapse
Affiliation(s)
| | - Cristiane Duque
- School of Dentistry, São Paulo State University (UNESP), Araçatuba, São Paulo, Brazil
| | - Kelly Limi Aida
- School of Dentistry, São Paulo State University (UNESP), Araçatuba, São Paulo, Brazil
| | | | - Loiane Massunari
- School of Dentistry, São Paulo State University (UNESP), Araçatuba, São Paulo, Brazil
| | - Marlus Chorilli
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| |
Collapse
|
44
|
Ex-Vivo Force Spectroscopy of Intestinal Mucosa Reveals the Mechanical Properties of Mucus Blankets. Sci Rep 2017; 7:7270. [PMID: 28779181 PMCID: PMC5544714 DOI: 10.1038/s41598-017-07552-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 06/27/2017] [Indexed: 01/03/2023] Open
Abstract
Mucus is the viscous gel that protects mucosal surfaces. It also plays a crucial role in several diseases as well as in mucosal drug delivery. Because of technical limitations, mucus properties have mainly been addressed by in-vitro studies. However, this approach can lead to artifacts as mucus collection can alter its structure. Here we show that by using an implemented atomic force microscope it is possible to measure the interactions between micro-particles and mucus blankets ex-vivo i.e., on fresh excised mucus-covered tissues. By applying this method to study the small intestine, we were able to quantify the stiffness and adhesiveness of its mucus blanket at different pH values. We also demonstrate the ability of mucus blankets to bind and attract particles hundreds of µm away from their surface, and to trap and bury them even if their size is as big as 15 µm.
Collapse
|
45
|
Refai H, Hassan D, Abdelmonem R. Development and characterization of polymer-coated liposomes for vaginal delivery of sildenafil citrate. Drug Deliv 2017; 24:278-288. [PMID: 28165805 PMCID: PMC8241125 DOI: 10.1080/10717544.2016.1247925] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Vaginal administration of sildenafil citrate has shown recently to develop efficiently the uterine lining with subsequent successful embryo implantation following in vitro fertilization. The aim of the present study was to develop sildenafil-loaded liposomes coated with bioadhesive polymers for enhanced vaginal retention and improved drug permeation. Three liposomal formulae were prepared by thin-film method using different phospholipid:cholesterol ratios. The optimal liposomal formulation was coated with bioadhesive polymers (chitosan and HPMC). A marked increase in liposomal size and zeta potential was observed for all coated liposomal formulations. HPMC-coated liposomes showed the greater bioadhesion and higher entrapment efficiency than chitosan-coated formulae. The in vitro release studies showed prolonged release of sildenafil from coated liposomes as compared to uncoated liposomes and sildenafil solution. Ex vivo permeation study revealed the enhanced permeation of coated relative to uncoated liposomes. Chitosan-coated formula demonstrated highest drug permeation and was thus selected for further investigations. Transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FTIR) confirmed the successful coating of the liposomes by chitosan. Histopathological in vivo testing proved the efficacy of chitosan-coated liposomes to improve blood flow to the vaginal endometrium and to increase endometrial thickness. Chitosan-coated liposomes can be considered as potential novel drug delivery system intended for the vaginal administration of sildenafil, which would prolong system's retention at the vaginal site and enhance the permeation of sildenafil to uterine blood circulation.
Collapse
Affiliation(s)
- Hanan Refai
- a Department of Pharmaceutics and Industrial Pharmacy , Faculty of Pharmacy, Cairo University , Cairo , Egypt and.,b Department of Pharmaceutics and Industrial Pharmacy , Faculty of Pharmacy, Misr University for Science and Technology , 6th of October City , Egypt
| | - Doaa Hassan
- b Department of Pharmaceutics and Industrial Pharmacy , Faculty of Pharmacy, Misr University for Science and Technology , 6th of October City , Egypt
| | - Rehab Abdelmonem
- b Department of Pharmaceutics and Industrial Pharmacy , Faculty of Pharmacy, Misr University for Science and Technology , 6th of October City , Egypt
| |
Collapse
|
46
|
Nanoemulsion-based electrolyte triggered in situ gel for ocular delivery of acetazolamide. Eur J Pharm Sci 2017; 104:302-314. [DOI: 10.1016/j.ejps.2017.04.013] [Citation(s) in RCA: 107] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 03/24/2017] [Accepted: 04/18/2017] [Indexed: 11/18/2022]
|
47
|
Martins ALL, de Oliveira AC, do Nascimento CMOL, Silva LAD, Gaeti MPN, Lima EM, Taveira SF, Fernandes KF, Marreto RN. Mucoadhesive Properties of Thiolated Pectin-Based Pellets Prepared by Extrusion-Spheronization Technique. J Pharm Sci 2017; 106:1363-1370. [DOI: 10.1016/j.xphs.2017.01.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 01/23/2017] [Accepted: 01/24/2017] [Indexed: 10/20/2022]
|
48
|
Thiolated chitosan micelles: Highly mucoadhesive drug carriers. Carbohydr Polym 2017; 167:250-258. [PMID: 28433160 DOI: 10.1016/j.carbpol.2017.03.019] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 03/07/2017] [Accepted: 03/07/2017] [Indexed: 11/22/2022]
Abstract
Current study was aimed to generate thiolated chitosan micelles based on amphiphilic chitosan-stearic acid conjugate (CSA) and to evaluate adhesive properties on mucosal membranes. Chitosan-stearic acid-thioglycolic acid (CSA-TGA) conjugate was synthesized via stearic acid linkage to chitosan and later, thioglycolic acid was covalently attached to CSA. CSA-TGA and CSA were characterized by degree of amine substitution, thiol group determination, ATR-FTIR and cytotoxicity analysis. Micelle size was 13.40±9.38 and 26.30±26.86nm and zeta potential -0.01 and 0.03mV for CSA and CSA-TGA, respectively. In porcine mucus CSA-TGA micelles exhibited 1.80-, 2.12- and 1.72-fold increase in dynamic viscosity, elastic modulus and viscous modulus, respectively. Compared to CSA micelles CSA-TGA micelles remained up to 56.1- fold and 28.6- fold higher degree attached on intestinal and vaginal mucosa, respectively. Taking possibility to incorporate both lipophilic and hydrophilic drugs into these micelles into account, thiol functionalized micelles could be promising carriers for mucosal drug delivery.
Collapse
|
49
|
Efiana NA, Mahmood A, Lam HT, Zupančič O, Leonaviciute G, Bernkop-Schnürch A. Improved mucoadhesive properties of self-nanoemulsifying drug delivery systems (SNEDDS) by introducing acyl chitosan. Int J Pharm 2017; 519:206-212. [DOI: 10.1016/j.ijpharm.2017.01.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 01/05/2017] [Accepted: 01/06/2017] [Indexed: 11/25/2022]
|
50
|
da Silva CF, Martins F, Santana MHA. Adsorption Isotherms of Mucin on Granules Containing Chitosan Microspheres. ADSORPT SCI TECHNOL 2016. [DOI: 10.1260/026361707785284167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Affiliation(s)
- Classius F. da Silva
- Science and Technology Center, State University of West-Paraná, Rua da Faculdade 2550, Toledo-Pr, CEP 85903-000, Brazil
- School of Chemical Engineering, State University of Campinas, Avenida Albert Einstein 500, Cidade Universitária Zeferino Vaz, Campinas-SP, CEP 13083-970, Brazil
| | - Fernanda Martins
- School of Chemical Engineering, State University of Campinas, Avenida Albert Einstein 500, Cidade Universitária Zeferino Vaz, Campinas-SP, CEP 13083-970, Brazil
| | - Maria Helena A. Santana
- School of Chemical Engineering, State University of Campinas, Avenida Albert Einstein 500, Cidade Universitária Zeferino Vaz, Campinas-SP, CEP 13083-970, Brazil
| |
Collapse
|