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Zhang H, Gu Z, Li W, Guo L, Wang L, Guo L, Ma S, Han B, Chang J. pH-sensitive O-carboxymethyl chitosan/sodium alginate nanohydrogel for enhanced oral delivery of insulin. Int J Biol Macromol 2022; 223:433-445. [PMID: 36347366 DOI: 10.1016/j.ijbiomac.2022.10.274] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 10/25/2022] [Accepted: 10/31/2022] [Indexed: 11/08/2022]
Abstract
Oral drug delivery is considered the most preferred mode of treatment because of its high patient compliance and minimal invasiveness. However, the oral delivery of protein drug has been a difficult problem which restricts its application due to the unstable and inefficient penetration of protein in the gastrointestinal tract. In this study, a novel OCMC/SA nanohydrogel was prepared by using of O-carboxymethyl chitosan (OCMC) and sodium alginate (SA) to solve the problem. The OCMC/SA had a typical nanostructure, which was helpful to increase the specific surface area and enhanced the bioavailability of the drugs. OCMC/SA had a high drug loading capacity and realized passive drug targeting function by responding to the different pH value of the microenvironment. It could have a certain protective effect on drugs in strong acid circumstances, while its structure got loosed and effectively released drugs in intestinal circumstances. OCMC/SA could release the drug for >12 h, and the released insulin could maintain high activity. OCMC/SA nanohydrogel showed promising results in type 1 diabetic rats, and its pharmacological bioavailability was 6.57 %. In conclusion, this study constructed a novel OCMC/SA nanohydrogel, which had a lot of exciting characteristics and provided a new strategy for oral drug delivery.
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Affiliation(s)
- Haibin Zhang
- College of Marine Life Science, Ocean University of China, Qingdao 266003, PR China
| | - Zhiyang Gu
- College of Marine Life Science, Ocean University of China, Qingdao 266003, PR China
| | - Wenya Li
- College of Marine Life Science, Ocean University of China, Qingdao 266003, PR China
| | - Lili Guo
- College of Marine Life Science, Ocean University of China, Qingdao 266003, PR China
| | - Litong Wang
- College of Marine Life Science, Ocean University of China, Qingdao 266003, PR China
| | - Lan Guo
- College of Marine Life Science, Ocean University of China, Qingdao 266003, PR China
| | - Saibo Ma
- College of Marine Life Science, Ocean University of China, Qingdao 266003, PR China
| | - Baoqin Han
- College of Marine Life Science, Ocean University of China, Qingdao 266003, PR China; Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266235, PR China
| | - Jing Chang
- College of Marine Life Science, Ocean University of China, Qingdao 266003, PR China; Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266235, PR China.
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Ibrahim M, Munir S, Ahmed S, Chughtai AH, Ahmad W, Khan J, Murtey MD, Ijaz H, Ojha SC. Gliclazide in Binary and Ternary Systems Improves Physicochemical Properties, Bioactivity, and Antioxidant Activity. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:2100092. [PMID: 36466089 PMCID: PMC9718633 DOI: 10.1155/2022/2100092] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 04/01/2022] [Accepted: 09/27/2022] [Indexed: 10/03/2023]
Abstract
The poor solubility of the antidiabetic drug gliclazide (Glc) is due to its hydrophobic nature. This research is aimed at improving Glc's solubility and drug release profile, as well as at investigating additional benefits such as bioactivity and antioxidant activity, by forming binary complexes with HPβCD at different w/w ratios (1 : 1, 1 : 2.5, 1 : 4, and 1 : 9) and ternary complexes with HPβCD and Tryp at 1 : 1 : 1, 1 : 1 : 0.27, 1 : 2.5 : 0.27, 1 : 3.6 : 3.6, 1 : 4 : 1, and 1 : 9 : 1, respectively. Complexes were prepared by the physical mixing (PM) and solvent evaporation (SE) methods. The prepared inclusion complexes were meticulously characterized by X-ray diffractometry (XRD), scanning electron microscopy (SEM), and attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectra. To verify our findings, the inclusion complexes were evaluated by equilibrium solubility, in vitro drug release profile, kinetic models, and antidiabetic and antioxidant activities in animal models. Our results demonstrated that the solubility and drug release profile were found to be enhanced through binary as well as ternary complexes. Notably, ternary complexes with a ratio of 1 : 9 : 1 showed the highest solubility and drug release profile compared to all other preparations. Data on antioxidant activity indicated that the ternary complex had the higher total antioxidant status (TAS), superoxide dismutase (SOD), and catalase (CAT) activity than the binary complex and Glc alone, in contrast to the diabetic group. In vivo antidiabetic activity data revealed a high percentage reduction in the blood glucose level by ternary complexes (49-52%) compared to the binary complexes (45-46%; p ≤ 0.05). HPβCD and Tryp provide a new platform for overcoming the challenges associated with poorly soluble Glc by providing greater complexing and solubilizing capabilities and imparting ancillary benefits to improve the drug's antidiabetic and antioxidant activities.
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Affiliation(s)
- Muhammad Ibrahim
- Department of Biochemistry, Bahauddin Zakariya University, Multan 60800, Pakistan
| | - Shehla Munir
- Department of Biochemistry, Bahauddin Zakariya University, Multan 60800, Pakistan
| | - Sarfraz Ahmed
- Department of Basic Sciences, University of Veterinary and Animal Sciences Lahore, Narowal Campus, Narowal 51600, Pakistan
| | | | - Waqas Ahmad
- Department of Clinical Sciences, University of Veterinary and Animal Sciences Lahore, Narowal Campus, Narowal 51600, Pakistan
| | - Jallat Khan
- Department of Chemistry, Khwaja Fareed University of Engineering & Information Technology, Rahim Yar Khan 64200, Pakistan
| | - Mogana Das Murtey
- Basic Sciences and Oral Biology Unit, School of Dental Sciences, Health Campus, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia
| | - Hira Ijaz
- Department of Pharmacy, Pak–Austria Fachhochschule Institute of Applied Sciences and Technology, Mang, Haripur 22620, Khyber Pakhtunkhwa, Pakistan
| | - Suvash Chandra Ojha
- Department of Infectious Diseases, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
- Southwest Medical University, Jiangyang District, Luzhou 646000 Sichuan, China
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El-Sabawi D, Abu-Dahab R, Zalloum WA, Ijbara F, Hamdan II. The effect of ferrous ions, calcium ions and citric acid on absorption of ciprofloxacin across caco-2 cells: practical and structural approach. Drug Dev Ind Pharm 2018; 45:292-303. [PMID: 30348012 DOI: 10.1080/03639045.2018.1539495] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
OBJECTIVE To study the potential influence of selected metal ions on absorption (and hence oral bioavailability of ciprofloxacin (Cipro) in presence and absence of a competing ligand. SIGNIFICANCE The presence of metal ions together with Cipro results in complexes exhibiting a decreased bioavailability. Attempts were made to better understand the mechanism of decreased Cipro bioavailability in the presence of metals such as calcium and ferrous ions, and a small-sized ligand citric acid (CitA). METHODS Effect of complex size or other potential factors was studied using diffusion through synthetic membrane, permeation studies across Caco-2 cells and capillary electrophoresis. A molecular dynamics (MD) simulation study was conducted to find the arrangement and the nature of the interactions between Cipro molecules and ferrous ions. RESULTS Cipro was shown to form complexes with metals and CitA. The presence of CitA improved permeation of Cipro through the synthetic membrane but this was not as obvious in case of Caco-2 cells. Capillary electrophoresis suggested the existence of large molecular aggregates of Cipro: metal complexes. MD simulations offered clear evidence of large size aggregates in line with the experimental findings. CitA alone significantly improved permeation of Cipro through Caco-2 cells. CONCLUSIONS The size of the formed complexes, rather than the decrease in the solubility of formed complexes, plays a significant role in permeation (absorption) of Cipro. CitA might ameliorate the effect of co-administered metal ions on the bioavailability of Cipro.
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Affiliation(s)
- Dina El-Sabawi
- a School of Pharmacy, The University of Jordan , Amman , Jordan
| | - Rana Abu-Dahab
- a School of Pharmacy, The University of Jordan , Amman , Jordan
| | - Waleed A Zalloum
- b Department of pharmacy , Faculty of health science, American University of Madaba , Amman , Jordan
| | - Fadia Ijbara
- a School of Pharmacy, The University of Jordan , Amman , Jordan
| | - Imad I Hamdan
- a School of Pharmacy, The University of Jordan , Amman , Jordan
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