Attenuated total reflection (ATR) Fourier transform infrared (FTIR) spectroscopic imaging has been used in combination with UV detection to study the release of a model poorly water-soluble drug, indomethacin, when formulated with selected drug carriers. Firstly, formulations of indomethacin and nicotinamide in varying weight ratios were studied since novel tablet dosage forms containing multi-drugs are of industrial interest. The in situ spectroscopic imaging measurements of the dissolving tablets showed that as the loading of indomethacin was increased, the rate of drug release changed from one that expressed first-order drug release to one which showed zero-order drug release. Two drug release mechanisms have been identified from the recorded spectroscopic images and UV dissolution profiles. To further validate these mechanisms, specific formulations containing the model drug and two other excipients, urea and mannitol, were studied. The formulations with urea showed similar first-order release, indicative of the drug-carrier interactions. Whereas, the indomethacin/mannitol formulations showed a zero-order release curve explained by disintegration of the tablet. ATR-FTIR spectroscopic imaging provided highly chemically specific information as well as the spatial distribution of the components during the dissolution process which has demonstrated the potential of this combined analytical setup to determine the mechanisms of drug release.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.ijpharm.2015.08.068 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Innovating alopecia treatment: nanostructured lipid carriers as advanced delivery platforms.
Naunyn Schmiedebergs Arch Pharmacol
January 2025
Faculty of Pharmacy, Integral University, Lucknow, 226026, India.
Alopecia, a common dermatological condition, poses significant psychological and social challenges. Despite the availability of various treatments, their efficacy is often limited by poor bioavailability and delivery challenges. Nanostructured lipid carriers have emerged as promising advanced drug delivery systems for alopecia treatment due to their ability to encapsulate both hydrophilic and lipophilic compounds, enhancing their stability, solubility, and controlled release.
View Article and Find Full Text PDFNanoparticle innovations in targeted cancer therapy: advancements in antibody-drug conjugates.
Naunyn Schmiedebergs Arch Pharmacol
January 2025
Department of Biochemistry, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, 11829, Cairo, Egypt.
Antibody-drug conjugates (ADCs) have emerged as a promising strategy in targeted cancer therapy, enabling the precise delivery of cytotoxic agents to tumor sites while minimizing systemic toxicity. However, traditional ADCs face significant limitations, including restricted drug loading capacity, where an optimal drug-to-antibody ratio (DAR) is crucial; low DARs may lead to insufficient potency, while high DARs can cause rapid clearance and increased toxicity. Additionally, ADCs often suffer from instability in circulation due to the potential for premature release of cytotoxic agents, resulting in off-target effects and reduced therapeutic efficacy.
View Article and Find Full Text PDFFluoxetine exerts anti-proliferative effect in human epidermal keratinocytes.
Arch Dermatol Res
January 2025
Department of Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.
We have recently shown that fluoxetine (FX) suppressed polyinosinic-polycytidylic acid-induced inflammatory response and endothelin release in human epidermal keratinocytes, via the indirect inhibition of the phosphoinositide 3-kinase (PI3K)-pathway. Because PI3K-signaling is a positive regulator of the proliferation, in the current, highly focused follow-up study, we assessed the effects of FX (14 µM) on the proliferation and differentiation of human epidermal keratinocytes. We found that FX exerted anti-proliferative actions in 2D cultures (HaCaT and primary human epidermal keratinocytes [NHEKs]; 48- and 72-h; CyQUANT-assay) as well as in 3D reconstructed epidermal equivalents (48-h; Ki-67 immunohistochemistry).
View Article and Find Full Text PDFA Comprehensive Review on Exploring the Potential of Phytochemicals and Biogenic Nanoparticles for the Treatment of Antimicrobial-Resistant Pathogenic Bacteria.
Curr Microbiol
January 2025
Molecular Biology Laboratory, Department of Microbiology, Science Campus, Alagappa University, Karaikudi, Tamil Nadu, 630003, India.
Antimicrobial resistance (AMR) is an escalating global health concern that results in approximately 700,000 deaths annually owing to drug-resistant infections. It compromises the effectiveness of conventional antibiotics, as well as fundamental medical procedures, such as surgery and cancer treatment. Phytochemicals, natural plant constituents, and biogenic nanoparticles synthesized through biological processes are pharmacological alternatives for supplementing or replacing traditional antibiotics.
View Article and Find Full Text PDFX-ray Responsive Antioxidant Drug-Free Hydrogel for Treatment of Radiation Skin Injury.
ACS Appl Mater Interfaces
January 2025
State Key Laboratory of Advanced Medical Materials and Devices, Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Key Laboratory of Radiopharmacokinetics for Innovative Drugs, Tianjin Institutes of Health Science, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, P. R. China.
Radiotherapy (RT) is widely applied in tumor therapy, but inevitable side effects, especially for skin radiation injury, are still a fatal problem and life-threatening challenge for tumor patients. The main components of topical radiation protection preparations currently available on the market are antioxidants, such as SOD, which are limited by their unstable activity and short duration of action, making it difficult to achieve the effects of radiation protection and skin radiation damage treatment. Therefore, we designed a drug-free antioxidant hydrogel patch with encapsulated bioactive epidermal growth factor (EGF) for the treatment of radiation skin injury.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!