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  • 1
    In: Pharmaceutics, MDPI AG, Vol. 14, No. 3 ( 2022-02-26), p. 517-
    Abstract: Oral, quick response, and on demand, also known as a spontaneous oral treatment for erectile dysfunction, is highly needed by both patients and physicians. Vardenafil is selective (fewer side effects) and more effective in difficult-to-treat conditions than sildenafil. This study aims at fostering the dual objectives of using biomolecules such as artificial sweetening agents to solubilize and mask the bitterness of vardenafil loaded on biodegradable polymeric materials (PVA, MC, SA, and PVP K30) to fabricate oral, fast-dissolving films (vardenafil ODFs) in the mouth without the need for water to ingest the dosage form. Furthermore, coprecipitated-dispersed mixtures of vardenafil and three sweeteners (sorbitol, acesulfame K, and sucralose) were prepared and characterized using FTIR, DSC, and solubility studies. Moreover, eight different vardenafil ODFs were prepared using the solvent-casting method. Modified gustatory sensation test, in vitro disintegration, and release studies were performed. In addition, the optimized ODF (F8) was compared with the commercial film-coated tablets pharmacokinetically (relative bioavailability, onset, and duration of actions were estimated). The results indicated that the three sweetening agents had comparable solubilizing capacity. However, both sucralose- and acesulfame K-based ODFs have a more enhanced sweet and palatable taste than sorbitol-sweetened ODF. The SA- and PVP K30-based ODFs showed significantly faster disintegration times and release rates than MC. In conclusion, PVA has good film-forming properties, but a higher ratio of PVA adversely affected the disintegration and release characteristics. The % relative bioavailability for ODF was 126.5%, with a superior absorption rate constant (Ka) of 1.2-fold. The Cmax and estimated Tmax were compared to conventional film-coated tablets.
    Type of Medium: Online Resource
    ISSN: 1999-4923
    Language: English
    Publisher: MDPI AG
    Publication Date: 2022
    detail.hit.zdb_id: 2527217-2
    SSG: 15,3
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  • 2
    In: Journal of Drug Delivery Science and Technology, Elsevier BV, Vol. 70 ( 2022-04), p. 103166-
    Type of Medium: Online Resource
    ISSN: 1773-2247
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2022
    detail.hit.zdb_id: 2542935-8
    SSG: 15,3
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  • 3
    Online Resource
    Online Resource
    Oxford University Press (OUP) ; 2022
    In:  Journal of Pharmacy and Pharmacology Vol. 74, No. 11 ( 2022-11-04), p. 1546-1567
    In: Journal of Pharmacy and Pharmacology, Oxford University Press (OUP), Vol. 74, No. 11 ( 2022-11-04), p. 1546-1567
    Abstract: Ageing is a major cause of multiple age-related diseases. Several mechanisms have been reported to contribute to these abnormalities including glycation, oxidative stress, the polyol pathway and osmotic stress. Glycation, unlike glycosylation, is an irregular biochemical reaction to the formation of active advanced glycation end-products (AGEs), which are considered to be one of the causes of these chronic diseases. This study provides a recent and comprehensive review on the possible causes, mechanisms, types, analytical techniques, diseases and treatments of the toxic glycation end products. Key findings Several mechanisms have been found to play a role in generating hyperglycaemia-induced oxidative stress including an increase in the levels of reactive oxygen species (ROS), increase in the levels of AGEs, binding of AGEs and their receptors (RAGE) and the polyol pathway and thus have been investigated as promising novel targets. Summary This review focuses on the key mechanisms attributed to cumulative increases of glycation and pathological RAGE expression as a significant cause of multiple age-related diseases, and reporting on different aspects of antiglycation therapy as a novel approach to managing/treating age-related diseases. Additionally, historical, current and possible future antiglycation approaches will be presented focussing on novel drug delivery methods.
    Type of Medium: Online Resource
    ISSN: 0022-3573 , 2042-7158
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2022
    detail.hit.zdb_id: 2041988-0
    detail.hit.zdb_id: 2050532-2
    SSG: 15,3
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  • 4
    In: Drug Delivery, Informa UK Limited, Vol. 29, No. 1 ( 2022-12-31), p. 374-385
    Type of Medium: Online Resource
    ISSN: 1071-7544 , 1521-0464
    Language: English
    Publisher: Informa UK Limited
    Publication Date: 2022
    detail.hit.zdb_id: 2020593-4
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  • 5
    Online Resource
    Online Resource
    Bentham Science Publishers Ltd. ; 2024
    In:  Current Drug Delivery Vol. 21, No. 1 ( 2024-01), p. 126-139
    In: Current Drug Delivery, Bentham Science Publishers Ltd., Vol. 21, No. 1 ( 2024-01), p. 126-139
    Abstract: Poor solubility and dissolution rate of drugs are largely responsible for erratic drug absorption and limited oral bioavailability. Etodolac (ETO) is a non-steroidal anti-inflammatory drug (NSAID) that is classified as BCS class II (dissolution rate-dependent absorption). ETO has high safety and efficacy in pain relief and control of inflammation. ETO is commercially available as (400- 600 mg) tablets; poor solubility and dissolution rate of ETO could result in variable oral absorption and inconsistent analgesic responses. The aim of this study was to improve solubility and dissolution rates of ETO by complexation with cyclodextrins (CDs). Methods: Four different CDs namely β-, γ-, HP β-CDs, and HP γ-CDs were prepared using three different methods; solvent evaporation (CO), freeze-drying (FD), and physical mixing (PM). The prepared drug: excipient mixtures were investigated for aqueous solubility, as well as via DSC, XRD, FTIR, SEM, dissolution, and docking. Results: The results revealed a solubility phase diagram of the AL type, indicating a 1:1 complexation of ETO: CD. These results agreed with our molecular docking calculations. DSC, FTIR, XRD, and SEM results confirmed the formation of an inclusion complex. The complexation efficiency, solubility, and dissolution enhancement were in the order of HPγ-CD 〉 γ-CD 〉 HPβ-CD 〉 β-CD. FD method was superior to both CO and PM. Conclusion: Superior dissolution enhancements of ETO were recorded for the FD mixture (up to 90% dissolved in less than 10 min). In conclusion, γ- and hydroxypropyl γ-derivative of cyclodextrins can be considered a promising excipient for enhancement of dissolution rates concerned for ETO.
    Type of Medium: Online Resource
    ISSN: 1567-2018
    Language: English
    Publisher: Bentham Science Publishers Ltd.
    Publication Date: 2024
    SSG: 15,3
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