1
|
LI X, LUO Y, WANG J, DU Z. Formulation, characterization and and evaluation of aloe-emodin-loaded solid dispersions for dissolution enhancement. J TRADIT CHIN MED 2024; 44:54-62. [PMID: 38213239 PMCID: PMC10774735 DOI: 10.19852/j.cnki.jtcm.20231110.002] [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] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 07/20/2023] [Indexed: 01/13/2024]
Abstract
OBJECTIVE To prepare aloe-emodin solid dispersion (AE-SD) and determine the metabolic process of AE and AE-SD in vivo. METHODS AE-SD was prepared viasolvent evaporation or solvent melting using PEG-6000 and PVP-K30 as carriers. Thermogravimetric analysis, X-ray diffraction spectroscopy, differential scanning calorimetry, Fourier transform infrared spectroscopy and scanning electron microscopy were used to identify the physical state of AE-SD. Optimal prescriptions were screened viathe dissolution degree determination method. Using Phoenix software, AE suspension and AE-SD were subjected to a pharmacokinetic comparison study analyzing the alteration of behavior in vivo after AE was prepared as a solid dispersion. Acute toxicity was assessed in mice, and the physiological toxicity was used as the determination criterion for toxicity. RESULTS AE-SD showed that AE existed in the carrier in an amorphous state. Compared with polyethylene glycol, polyvinylpyrrolidone (PVP) inhibited AE crystallization, causing the drug to transform from a dense crystalline state to an amorphous form and increasing the degree of drug dispersion. Therefore, it was more suitable as a carrier material for AE-SD. The addition of poloxamer (POL) was more beneficial to the stability of solid dispersions and could reduce the amount of PVP. The dissolution test confirmed that the optimal ratio of AE to the composite vector AE-PVP-POL was 1:2:2, and its dissolution effect was also optimal. Based on the pharmacokinetic comparison, the drug absorption was faster and quickly reached the peak of blood drug concentration in AE-SD compared to AE, the Cmax of AE-SD was greater than that of AE, and t1/2 and mean residence time of AE-SD were less than AE. The results showed that the drug metabolism in AE-SD was better, and the residence time was shorter. The toxicology study showed that both AE and AE-SD had no toxicity. CONCLUSION This paper established that the solubility of the drug could be increased after preparing a solid dispersion, as demonstrated by in vitro dissolution experiments. In vivo pharmacokinetics studies confirmed that AE-SD could improve the bioavailability of AE in vivo, providing a new concept for the research and development of AE preparations.
Collapse
Affiliation(s)
- Xiuyan LI
- 1 Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine, Ministry of Education, Harbin 150040, China
| | - Yuting LUO
- 1 Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine, Ministry of Education, Harbin 150040, China
| | - Jinhui WANG
- 2 College of Pharmacy, Harbin Medical University, Harbin 150081, China
| | - Zhimin DU
- 3 Institute of Clinical Pharmacology, the Second Affliated Hospital of Harbin Medical University (University Key aboratory of Drug Research, Heilongjiang Province), Harbin 150086, China; Department of Clinical Pharmacology College of Pharmacy, Harbin Medical University, Harbin 150081, China; State Key Laboratory of Quality Research in Chinese Medicines, Macau University of Science and Technology, Macau 999078, China; College of Pharmacy, Harbin Medical University, Harbin 150081, China
| |
Collapse
|
2
|
Smith SE, Peters NA, Floris LM, Patterson JM, Hawkins WA. Putting midodrine on the MAP: An approach to liberation from intravenous vasopressors in vasodilatory shock. Am J Health Syst Pharm 2022; 79:1047-1055. [PMID: 35235946 DOI: 10.1093/ajhp/zxac069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
DISCLAIMER In an effort to expedite the publication of articles related to the COVID-19 pandemic, AJHP is posting these manuscripts online as soon as possible after acceptance. Accepted manuscripts have been peer-reviewed and copyedited, but are posted online before technical formatting and author proofing. These manuscripts are not the final version of record and will be replaced with the final article (formatted per AJHP style and proofed by the authors) at a later time. PURPOSE Prolonged duration of intravenous (IV) vasopressor dependence in critically ill adult patients with vasodilatory shock results in increased length of stay in both the intensive care unit (ICU) and hospital, translating to higher risk of infection, delirium, immobility, and cost. Acceleration of vasopressor liberation can aid in reducing these risks. Midodrine is an oral α1-adrenergic receptor agonist that offers a potential means of liberating patients from IV vasopressor therapy. This clinical review summarizes primary literature and proposes a clinical application for midodrine in the recovery phase of vasodilatory shock. SUMMARY Five studies with a total of over 1,000 patients conducted between 2011 and 2021 were identified. In observational studies, midodrine administration was demonstrated to lead to faster time to liberation from IV vasopressor therapy and shorter ICU length of stay in patients recovering from vasodilatory shock. These findings were not replicated in a prospective, multicenter, randomized controlled trial. In this review, literature evaluating midodrine use for IV vasopressor liberation is summarized and study limitations are discussed. CONCLUSION On the basis of this review of current literature, recommendations are provided on selecting appropriate candidates for adjunctive midodrine in the recovery phase of vasodilatory shock and considerations are discussed for safely and effectively initiating, titrating, and discontinuing therapy.
Collapse
Affiliation(s)
- Susan E Smith
- Department of Clinical and Administrative Pharmacy, University of Georgia College of Pharmacy, Athens, GA, USA
| | - Nicholas A Peters
- Department of Pharmacy, Indiana University Health, Indianapolis, IN, USA
| | - Lauren M Floris
- Department of Pharmacy, Atrium Navicent Health Medical Center, Macon, GA, USA
| | | | - W Anthony Hawkins
- Department of Clinical and Administrative Pharmacy, University of Georgia College of Pharmacy, Albany, GA, and Department of Pharmacology and Toxicology, Medical College of Georgia at Augusta University, Albany, GA, USA
| |
Collapse
|
3
|
Ejsmont A, Stasiłowicz-Krzemień A, Ludowicz D, Cielecka-Piontek J, Goscianska J. Synthesis and Characterization of Nanoporous Carbon Carriers for Losartan Potassium Delivery. Materials (Basel) 2021; 14:ma14237345. [PMID: 34885515 PMCID: PMC8658076 DOI: 10.3390/ma14237345] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/19/2021] [Accepted: 11/26/2021] [Indexed: 12/13/2022]
Abstract
Losartan potassium is most commonly used for the treatment of hypertension. In recent years, new applications of this drug have emerged, encouraging the design of novel nanoporous carriers for its adsorption and release. The purpose of this study was to synthesize ordered mesoporous carbon vehicles via a soft-templating method altered with the use of nitrogen precursors and via a hard-templating method followed by chitosan functionalization. As a result, the materials obtained differed in nitrogen content as well as in the number of total surface functional groups. The impact of the modification on the physicochemical properties of carbon carriers and their interaction with losartan potassium during adsorption and release processes was examined. The materials were characterized by various morphologies, specific surface areas (101–1180 m2 g−1), and the amount of acidic/basic oxygen-containing functional groups (1.26–4.27 mmol g−1). These features, along with pore sizes and volumes, had a key effect on the sorption capacity of carbon carriers towards losartan potassium (59–161 mg g−1). Moreover, they contributed to the differential release of the drug (18.56–90.46%). Losartan potassium adsorption onto the surface of carbonaceous materials was mainly based on the formation of hydrogen bonds and π–π interactions and followed the Langmuir type isotherm. It has been shown that the choice of the method of carbon carriers’ synthesis and their modification allows for the precise control of the kinetics of the losartan potassium release from their surface, resulting in rapid or sustained drug liberation.
Collapse
Affiliation(s)
- Aleksander Ejsmont
- Faculty of Chemistry, Department of Chemical Technology, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland;
| | - Anna Stasiłowicz-Krzemień
- Faculty of Pharmacy, Department of Pharmacognosy, Poznań University of Medical Sciences, Święcickiego 4, 61-781 Poznań, Poland; (A.S.-K.); (D.L.)
| | - Dominika Ludowicz
- Faculty of Pharmacy, Department of Pharmacognosy, Poznań University of Medical Sciences, Święcickiego 4, 61-781 Poznań, Poland; (A.S.-K.); (D.L.)
| | - Judyta Cielecka-Piontek
- Faculty of Pharmacy, Department of Pharmacognosy, Poznań University of Medical Sciences, Święcickiego 4, 61-781 Poznań, Poland; (A.S.-K.); (D.L.)
- Correspondence: (J.C.-P.); (J.G.)
| | - Joanna Goscianska
- Faculty of Chemistry, Department of Chemical Technology, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland;
- Correspondence: (J.C.-P.); (J.G.)
| |
Collapse
|
4
|
Abstract
The inherent properties of albumin facilitate its effective use as a raw material to prepare a nanosized drug delivery vehicles. Because of the enhanced surface area, biocompatibility, and extended half-life of albumin nanoparticles, a number of drugs have been incorporated in albumin matrices in recent years. Furthermore, its ability to be conjugated to various receptor ligands makes albumin an ideal candidate for the increased delivery of drugs to specific sites. The present review provides an in-depth discussion of production strategies for the preparation of albumin and conjugated albumin nanoparticles and for the targeting of these formulations to specific organs and cancer cells. This review also provides insights into drug loading, release patterns, and cytotoxicity of various drug-loaded albumin nanoparticles.
Collapse
Affiliation(s)
- Abhishek Srivastava
- Department of Chemistry, GLA University, Chaumuhan, Mathura, Uttar Pradesh281406, India
| | - Anjali Prajapati
- Department of Chemistry, GLA University, Mathura, Uttar Pradesh281406, India
| |
Collapse
|
5
|
Hotta J, Cral WG, Sakima VT, Lara VS, Urban VM, Neppelenbroek KH. Intraoral Device for Optimal Antifungal Delivery in a Rat Model. Curr Drug Deliv 2018; 14:658-667. [PMID: 27739378 DOI: 10.2174/1567201813666161013122115] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 06/08/2016] [Accepted: 09/25/2016] [Indexed: 11/22/2022]
Abstract
BACKGROUND Antifungal agents incorporated into temporary denture resilient liners as drug carriers and delivery have been suggested as an alternative treatment for denture stomatitis. However, to test the in vivo biocompatibility of this protocol, standardization of an intraoral device for optimal drug delivery is required. OBJECTIVE Standardized criteria were produced to adjust an acrylic intraoral device (IOD) for rats feasible for denture stomatitis treatment by sustained drug-delivery based on minimal inhibitory drug concentrations (MICs) of antifungals for Candida albicans biofilm. METHOD Adjustments methodological involved diet, impression technique, type of retention device to the palate and histopathological analysis. 115 Wistar rats were tested without IOD, with devices without relining or relined with temporary resilient material (Trusoft) modified or not by drugs at MICs (nystatin-0.032g/mL; chlorhexidine diacetate-0.064g/mL; ketoconazole-0.128g/mL). The animals were sacrificed after 7 or 14 days from the IOD installation. RESULTS Paste diet enabled the best animal survival conditions. The IODs that most satisfactorily remained in position were those designed only to the posterior palatal mucosa and cement-retained in molars, being all obtained from impressions highly detained and individual. In both periods, Trusoft without/with drugs showed good performance. Only histological samples from hard/soft tissues were considered appropriate for region of interest-RI determination (n=12), which corresponded to the area restricted to the first molars between the palatal neurovascular bundles. Final samples of all groups allowed a standardized descriptive histopathological analysis in both periods. CONCLUSION The methodological standardization of this rat model resulted in IODs for optimal antifungal delivery for denture stomatitis treatment.
Collapse
Affiliation(s)
- Juliana Hotta
- Bauru School of Dentistry, University of São Paulo, Department of Prosthodontics, Bauru, São Paulo, Brazil
| | - Wilson Gustavo Cral
- Bauru School of Dentistry, University of São Paulo, Department of Prosthodontics, Bauru, São Paulo, Brazil
| | - Vinicius Tatsuyuji Sakima
- Araraquara Dental School, São Paulo State University, Department of Dental Materials and Prosthodontics Araraquara, São Paulo, Brazil
| | - Vanessa Soares Lara
- Bauru School of Dentistry, University of São Paulo, Department of Surgery, Stomatology, Pathology and Radiology, Bauru, São Paulo, Brazil
| | | | | |
Collapse
|