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Brtková B, Hermannová M, Chmelař J, Nešporová K, Kocurková A, Kubala L, Ambrožová G, Velebný V, Šimek M. Intraperitoneally administered native and lauroyl-modified hyaluronan films: Pharmacokinetic and metabolism studies. Carbohydr Polym 2023; 299:120201. [PMID: 36876812 DOI: 10.1016/j.carbpol.2022.120201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 09/16/2022] [Accepted: 10/05/2022] [Indexed: 11/09/2022]
Abstract
Hyaluronan is being investigated extensively as a biocompatible and biodegradable material for use in biomedical applications. While the derivatization of hyaluronan broadens its potential therapeutic use, the pharmacokinetics and metabolization of the derivatives must be thoroughly investigated. The fate of intraperitoneally-applied native and lauroyl-modified hyaluronan films with varying degrees of substitution was investigated in-vivo employing an exclusive stable isotope-labelling approach and LC-MS analysis. The materials were gradually degraded in peritoneal fluid, lymphatically absorbed, preferentially metabolized in the liver and eliminated without any observable accumulation in the body. Hyaluronan acylation prolongs its presence in the peritoneal cavity depending on the degree of substitution. The safety of acylated hyaluronan derivatives was confirmed via a metabolic study that revealed its degradation into non-toxic metabolites, i.e. native hyaluronan and free fatty acid. Stable isotope-labelling with LC-MS tracking comprises a high-quality procedure for the investigation of the metabolism and biodegradability of hyaluronan-based medical products in-vivo.
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Affiliation(s)
- Barbora Brtková
- Contipro a.s., Dolní Dobrouč 401, 56102 Dolní Dobrouč, Czech Republic; Department of Analytical Chemistry, Faculty of Science, Palacký University, Olomouc, Czech Republic
| | | | - Josef Chmelař
- Contipro a.s., Dolní Dobrouč 401, 56102 Dolní Dobrouč, Czech Republic
| | | | - Anna Kocurková
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic; Institute of Biophysics of the Czech Academy of Sciences, Brno, Czech Republic; Institute of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Lukáš Kubala
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic; Institute of Biophysics of the Czech Academy of Sciences, Brno, Czech Republic; Institute of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Gabriela Ambrožová
- Institute of Biophysics of the Czech Academy of Sciences, Brno, Czech Republic
| | - Vladimír Velebný
- Contipro a.s., Dolní Dobrouč 401, 56102 Dolní Dobrouč, Czech Republic
| | - Matěj Šimek
- Contipro a.s., Dolní Dobrouč 401, 56102 Dolní Dobrouč, Czech Republic.
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Maleckis K, Kamenskiy A, Lichter EZ, Oberley-Deegan R, Dzenis Y, MacTaggart J. Mechanically tuned vascular graft demonstrates rapid endothelialization and integration into the porcine iliac artery wall. Acta Biomater 2021; 125:126-137. [PMID: 33549808 DOI: 10.1016/j.actbio.2021.01.047] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 01/26/2021] [Accepted: 01/28/2021] [Indexed: 12/12/2022]
Abstract
Mechanical properties of vascular grafts likely play important roles in healing and tissue regeneration. Healthy arteries are compliant at low pressures but stiffen rapidly with increasing load, ensuring sufficient volumetric expansion without overstretching the vessel. Commercial synthetic vascular grafts are stiff and unable to expand under physiologic loads, which may result in altered hemodynamics, deleterious cellular responses, and compromised clinical performance. The goal of this study was to develop an Elastomeric Nanofibrillar Graft (ENG) with artery-tuned nonlinear compliance and compare its healing responses to conventional expanded polytetrafluoroethylene (ePTFE) grafts in a porcine iliac artery model. Human and porcine iliac arteries were mechanically characterized, and an ENG with similar properties was created by utilizing residual strains within electrospun nanofibers. The ENG was tested for implantation suitability and implanted onto n = 5 domestic swine iliac arteries, with control ePTFE grafts implanted onto the contralateral iliac arteries. After two weeks in vivo, all iliac arteries and grafts remained patent with no signs of thrombosis or dilation. The mechanically tuned ENG implants exhibited a more confluent CD31-positive cell monolayer (1.53 ± 0.73 µm2/mm vs 0.52 ± 0.55 µm2/mm, p = 0.042) on the graft lumenal surface and a higher fraction of αSMA-positive cells (16.2 ± 8.6% vs 1.4 ± 0.7%, p = 0.018) within the graft wall than the ePTFE controls. Despite heavy cellular infiltration, the ENG retained its artery-like mechanical characteristics after two weeks in vivo. These short-term results demonstrate potential advantages of mechanically tuned biomimetic vascular grafts over standard ePTFE grafts. STATEMENT OF SIGNIFICANCE: Off-the-shelf synthetic vascular grafts are often the only option available for treating advanced stages of vascular disease. Despite significant efforts devoted to improving their biochemical characteristics, synthetic peripheral arterial grafts continue to demonstrate poor clinical outcomes leading to costly reinterventions. Here, we hypothesized that a synthetic vascular graft with elastomeric mechanical properties tuned to a healthy peripheral artery promotes better healing responses than a synthetic stiff graft. To test this hypothesis, we developed an Elastomeric Nanofibrillar Graft (ENG) with artery-tuned mechanical properties and compared its performance to a commercial ePTFE graft in a preclinical porcine iliac artery model. Our results suggest that mechanically tuned ENGs can offer better healing responses, potentially leading to better clinical outcomes for peripheral arterial repairs.
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Abedinoghli D, Charkhpour M, Osouli-Bostanabad K, Selselehjonban S, Emami S, Barzegar-Jalali M, Adibkia K. Electrosprayed Nanosystems of Carbamazepine - PVP K30 for Enhancing Its Pharmacologic Effects. Iran J Pharm Res 2018; 17:1431-1443. [PMID: 30568701 PMCID: PMC6269578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
This study was conducted to enhance the pharmacologic effect of carbamazepine (CBZ) (as a poorly water-soluble drug) by fabricating CBZ-PVP K30 nanobeads using an electrospraying technique. CBZ-PVP K30 nanosystems with various ratios (1:3 and 1:5) at total solution concentrations of 3% and 5% w/v were prepared. The solution concentration extremely affected the size of the samples; where, the nanobeads (mean diameter of 457.65 ± 113.72 nm and 1.16 ± 0.46 µm) were developed at low and high solution concentrations, respectively. DSC thermographs and PXRD patterns precisely showed CBZ amorphization in the electrosprayed nanosystems. Based on the FTIR spectrum of the electrosprayed samples, a feasible interaction between N-H/O-H group of CBZ and PVP carbonyl group was detected. The in-vitro release studies revealed that the electrosprayed nanosystems represent a comparable rapid dissolution rate with respect to the physical mixtures (PMs) and the pure drug. The in-vivo results in NMRI mice indicated that the electrosprayed nanoformulation (with the drug: polymer ratio of 1:5 at a total solution concentration of 5% (w/v)) prolonged seizure latency time and decreased mortality percent in strychnine (STR) induced seizure mice more efficiently than the PM. Our finding revealed that the electrospraying as a cost-benefit and one step technique could be effectively applied for improving the physicochemical characteristics and pharmacologic effect of CBZ.
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Affiliation(s)
- Deniz Abedinoghli
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.
- Students Research Committee,Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Mohammad Charkhpour
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Karim Osouli-Bostanabad
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.
- Students Research Committee,Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Sevil Selselehjonban
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.
- Students Research Committee,Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Shahram Emami
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.
- Students Research Committee,Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Mohammad Barzegar-Jalali
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Khosro Adibkia
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
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Khan A, Iqbal Z, Khadra I, Ahmad L, Khan A, Khan MI, Ullah Z, Ismail. Simultaneous determination of domperidone and Itopride in pharmaceuticals and human plasma using RP-HPLC/UV detection: Method development, validation and application of the method in in-vivo evaluation of fast dispersible tablets. J Pharm Biomed Anal 2016; 121:6-12. [PMID: 26773534 DOI: 10.1016/j.jpba.2015.12.036] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 12/17/2015] [Accepted: 12/18/2015] [Indexed: 11/29/2022]
Abstract
Domperidone and Itopride are pro-kinetic agents, regulating the gastric motility and are commonly prescribed as anti emetic drugs. In the present study a simple, rapid and sensitive RP-HPLC/UV method was developed for simultaneous determination of Domperidone and Itopride in pharmaceutical samples and human plasma, using Tenofavir as internal standard. Experimental conditions were optimized and method was validated according to the standard guidelines. Combination of water (pH 3.0) and acetonitrile (65:35 v/v) was used as mobile phase, pumped at the flow rate of 1.5 ml/min. Detector wavelength was set at 210 nm and column oven temperature was 40oC. Unlike conventional liquid-liquid extraction, simple precipitation technique was applied for drug extraction from human plasma using acetonitrile for deprotienation. The method showed adequate separation of both the analytes and best resolution was achieved using Hypersil BDS C8 column (150 mm × 4.6 mm, 5 μm). The method was quite linear in the range of 20-600 ng/ml. Recovery of the method was 92.31% and 89.82% for Domperidone and Itopride, respectively. Retention time of both the analytes and internal standard was below 15 min. The lower limit of detection (LLOD) and lower limit of quantification (LLOQ) for Domperidone were 5 and 10 ng/ml while for Itopride was 12 and 15 ng/ml, respectively. The developed method was successfully applied for in-vivo analysis of fast dispersible tablets of Domperidone in healthy human volunteer. The proposed method was a part of formulation development study and was efficiently applied for determination of the two drugs in various pharmaceutical products and human plasma.
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Affiliation(s)
- Amjad Khan
- Department of Pharmacy, Abasyn University, Peshawar 25120, Pakistan
| | - Zafar Iqbal
- Department of Pharmacy, University of Peshawar, Peshawar 25120, Pakistan.
| | - Ibrahim Khadra
- Strathclyde Institute of Pharmacy and Biomedical Sciences, Glasgow, UK
| | - Lateef Ahmad
- Department of Pharmacy, University of Swabi, Swabi, Pakistan
| | - Abad Khan
- Department of Pharmacy, University of Swabi, Swabi, Pakistan
| | | | - Zia Ullah
- Department of Pharmacy, University of Peshawar, Peshawar 25120, Pakistan
| | - Ismail
- Department of Pharmacy, University of Peshawar, Peshawar 25120, Pakistan
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