Article
Pharmacology & Pharmacy
Zufika Qamar, Muhammad Usama Ashhar, Annu, Farheen Fatima Qizilibash, Pravat Kumar Sahoo, Asgar Ali, Javed Ali, Sanjula Baboota
Summary: In this study, a lipid nanocarrier formulation containing SEL and a P-gp pump inhibitor Quercetin (SEL-QUR LNC) was developed to enhance the bioavailability of SEL in the brain through oral administration. The optimized formulation showed improved properties and increased permeation across the gut membrane, demonstrating potential for enhancing SEL efficacy. Behavioral studies in PD rats further supported the efficacy of the formulation compared to SEL-QUR and SEL suspensions, indicating the promising prospect of the developed LNC formulation for improving SEL bioavailability in the brain.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2021)
Article
Pharmacology & Pharmacy
Jaeok Lee, Jiyeon Kang, Na-Yun Kwon, Aneesh Sivaraman, Ravi Naik, So-Young Jin, A. Reum Oh, Jae-Ho Shin, Younghwa Na, Kyeong Lee, Hwa-Jeong Lee
Summary: The inhibition of P-gp and BCRP by natural derivatives has shown promise in overcoming multidrug resistance in cancer chemotherapy, increasing the bioavailability of anticancer drugs and reducing drug resistance in cells. This approach could potentially be a useful clinical strategy.
Article
Pharmacology & Pharmacy
Elisa Corazza, Massimiliano Pio di Cagno, Annette Bauer-Brandl, Angela Abruzzo, Teresa Cerchiara, Federica Bigucci, Barbara Luppi
Summary: The objective of this study was to optimize a thermosensitive in situ gelling formulation to improve the intranasal and nose-to-brain delivery of the antiepileptic drug carbamazepine (CBZ). The formulation consisted of poloxamer 407 (P407), poloxamer 188 (P188), and hydroxypropylmethylcellulose (HPMC) and exhibited suitable properties for nasal delivery. The mucoadhesive properties of the formulation were enhanced by adding different grades of HPMC, and the formulation showed promising mucoadhesive potential. Furthermore, the formulation was able to increase drug solubility, control drug release, and promote drug permeation across barrier membranes.
EUROPEAN JOURNAL OF PHARMACEUTICAL SCIENCES
(2022)
Article
Medicine, General & Internal
Caiyun Ge, Dan Xu, Pengxia Yu, Man Fang, Juanjuan Guo, Dan Xu, Yuan Qiao, Sijia Chen, Yuanzhen Zhang, Hui Wang
Summary: This study revealed that P-gp plays a critical role in mediating the placental glucocorticoid barrier, with its expression inhibited in IUGR cases. The epigenetic regulation mechanism of P-gp was also explored, providing new insights into early warning, prevention, and treatment strategies for IUGR.
Article
Chemistry, Medicinal
Ricardo G. Teixeira, Iris C. Salaroglio, Nuno F. B. Oliveira, Joao G. N. Sequeira, Xavier Fontrodona, Isabel Romero, Miguel Machuqueiro, Ana Isabel Tomaz, M. Helena Garcia, Chiara Riganti, Andreia Valente
Summary: The urgent need to find more effective and selective drugs to overcome cancer multidrug resistance has led to the development and characterization of a new series of ruthenium-cyclopentadienyl (RuCp) compounds. These compounds were found to exhibit better cytotoxicity than the first-line chemotherapeutic drug cisplatin in non-small cell lung cancer cells. Furthermore, two specific compounds were shown to inhibit the activity of P-gp and MRP1 efflux pumps, providing potential candidates to circumvent cancer multidrug resistance.
JOURNAL OF MEDICINAL CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Chenhao Huang, Zhen Zhang, Jing Yan, Lan Sun, Jun Wang
Summary: This study investigates the impact of PTFE on the wear and corrosion resistance of Ni-P coatings in the oil and gas industry. The results show that incorporating PTFE enhances the coating's durability and effectively prevents the transmission of corrosive media and hydrogen. This research provides a comprehensive analysis and a robust corrosion model for the Ni-P-PTFE coating.
Review
Pharmacology & Pharmacy
Oluwadamilola M. Kolawole, Michael T. Cook
Summary: In situ gelling formulations are liquid drug delivery systems that can transform into gel state upon application to the body. Incorporating drug nanoparticles into in situ gelling systems can improve drug release and therapeutic outcomes. The composition of in situ gelling formulations affects various performance factors. This review article discusses evaluation techniques and clinical properties of in situ gelling systems for drug delivery.
EUROPEAN JOURNAL OF PHARMACEUTICS AND BIOPHARMACEUTICS
(2023)
Article
Instruments & Instrumentation
Purva Khare, Manasi M. Chogale, Pratik Kakade, Vandana B. Patravale
Summary: This article proposes a transmucosal ocular delivery system of Posaconazole using a gellan gum-based in situ gelling nano-suspension. The nanosuspension demonstrated enhanced antibacterial properties and drug release compared to a marketed itraconazole nanosuspension. The developed nanosuspension showed good mucoadhesion and minimal irritancy.
DRUG DELIVERY AND TRANSLATIONAL RESEARCH
(2022)
Article
Instruments & Instrumentation
Pranav Shah, Kejal Chavda, Bhavin Vyas, Shailaja Patel
Summary: The development of Linagliptin solid lipid nanoparticles (LGP-SLNs) aimed to improve its oral bioavailability by using poloxamer 188 and Tween 80 as P-gp inhibitors. Experimental results showed that LGP-SLNs exhibited higher relative bioavailability and better glucose reduction effects in vivo.
DRUG DELIVERY AND TRANSLATIONAL RESEARCH
(2021)
Article
Chemistry, Physical
Camila O. Cardoso, Ricardo Ferreira-Nunes, Marcilio Cunha-Filho, Tais Gratieri, Guilherme M. Gelfuso
Summary: This article proposes an in situ gelling microemulsion for the ocular delivery of moxifloxacin combined with betamethasone for use as a topical formulation throughout the postoperative period following eye surgery. The microemulsion shows promising parameters for ocular tolerability and prolonged drug release compared to controls.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Biochemistry & Molecular Biology
Qichao Wu, Hewei Chen, Fan Zhang, Weikang Wang, Fengliang Xiong, Yingyi Liu, Liangkang Lv, Wenjuan Li, Yukun Bo, Hongjian Yang
Summary: The study showed that cysteamine significantly enhanced rumen fermentation and antioxidant capacity in a high-forage substrate, enriching Prevotella in the rumen and guiding fermentation towards glucogenic propionate production.
Article
Polymer Science
Boglarka Szalai, Orsolya Jojart-Laczkovich, Anita Kovacs, Szilvia Berko, Gyorgy Tibor Balogh, Gabor Katona, Maria Budai-Szucs
Summary: This study aims to develop in situ gelling mucoadhesive ophthalmic preparations that can improve the bioavailability of eye drops. The results show that formulations based on thermosensitive polymers and mucoadhesive polymers can increase the residence time and penetration of the active pharmaceutical ingredient, thereby enhancing the bioavailability of the eye drops.
Review
Pharmacology & Pharmacy
Kunal S. Taskar, Xinning Yang, Sibylle Neuhoff, Mitesh Patel, Kenta Yoshida, Mary F. Paine, Kim L. R. Brouwer, Xiaoyan Chu, Yuichi Sugiyama, Jack Cook, Joseph W. Polli, Imad Hanna, Yurong Lai, Maciej Zamek-Gliszczynski
Summary: This article discusses the role of P-glycoprotein (P-gp) and breast cancer resistance protein (BCRP) in drug-drug interactions, drug absorption, and brain penetration. Based on clinical evidence, the article suggests that inhibition of P-gp or BCRP in the liver or kidneys has limited clinical implications on drug disposition.
CLINICAL PHARMACOLOGY & THERAPEUTICS
(2022)
Article
Pharmacology & Pharmacy
Chiara Amante, Tiziana Esposito, Pasquale Del Gaudio, Veronica Di Sarno, Amalia Porta, Alessandra Tosco, Paola Russo, Luigi Nicolais, Rita P. Aquino
Summary: This paper successfully developed alginate/pectin and alginate/pectin/chitosan blend particles in the form of an in situ forming hydrogel for wound repair applications, encapsulating doxycycline to control drug delivery and enhance antimicrobial properties. The presence of chitosan in the particles strongly influenced their properties and drug encapsulation efficiency. In vitro studies showed increased antibacterial activity related to chitosan content in the powders, suggesting their potential as a promising dressing for exudating wounds.
Article
Pharmacology & Pharmacy
Mohamed A. Morsy, Azza A. K. El-Sheikh, Sara Mohamed Naguib Abdel-Hafez, Mahmoud Kandeel, Seham A. Abdel-Gaber
Summary: Paeonol protects against MTX-induced nephrotoxicity through antioxidant, anti-inflammatory, and antiapoptotic mechanisms and might potentiate MTX chemotherapeutic efficacy.
FRONTIERS IN PHARMACOLOGY
(2022)
Article
Pharmacology & Pharmacy
Katrin Zoller, Dennis To, Patrick Knoll, Andreas Bernkop-Schnurch
Summary: This study examined the digestion behavior of lipid-based nanocarriers and found that the choice of excipients and drug delivery systems affected their digestion. The findings highlight the importance of understanding the digestion properties for oral drug delivery.
EUROPEAN JOURNAL OF PHARMACEUTICS AND BIOPHARMACEUTICS
(2022)
Article
Chemistry, Physical
Zeynep Burcu Akkus-Dagdeviren, Andrea Fuerst, Julian David Friedl, Martina Tribus, Andreas Bernkop-Schnuerch
Summary: This study investigates the combined usage of Layer-by-Layer coating and alkaline phosphatase-responsive charge reversal strategies in colloidal drug delivery systems. The findings show that this combination improves cellular internalisation and decreases cytotoxic effects.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Ahmad Saleh, Zeynep Burcu Akkus-Dagdeviren, Soheil Haddadzadegan, Richard Wibel, Andreas Bernkop-Schnuerch
Summary: The study developed peptide antibiotic-polyphosphatenanoparticles for targeted drug release on the intestinal epithelium. These nanoparticles showed protection against enzymatic degradation, superior mucus permeating properties, and the ability to release drug when triggered by intestinal alkaline phosphatase. The findings suggest that the PMB-PP NPs are promising delivery systems for protecting cationic peptide antibiotics, overcoming the mucus barrier, and providing direct drug release.
Article
Pharmacology & Pharmacy
Victor Claus, Helen Spleis, Christoph Federer, Katrin Zoeller, Richard Wibel, Flavia Laffleur, Camille Dumont, Philippe Caisse, Andreas Bernkop-Schnuerch
Summary: In this study, the lipophilicity of insulin glargine was increased through hydrophobic ion pairing with sodium octadecyl sulfate, enabling its incorporation into self-emulsifying drug delivery systems (SEDDS). Two SEDDS formulations were developed and loaded with the insulin glargine-HIP complex. The results showed that the bioavailability of the complexed insulin glargine in the SEDDS formulations was significantly increased after oral administration in rats.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2023)
Article
Nanoscience & Nanotechnology
Bao Le-Vinh, Christian Steinbring, Nguyet-Minh Nguyen Le, Barbara Matuszczak, Andreas Bernkop-Schnurch
Summary: Chitosan and its derivatives with high cell adhesion properties were designed and tested for their suitability as scaffold materials in tissue engineering. The attachment of a thiol group to chitosan significantly improved cell adhesion, with higher modification levels leading to better results. The resulting chitosan-based cryogels showed promise for 3D cell culture and tissue engineering.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Chemistry, Multidisciplinary
Sobia Noreen, Andreas Bernkop-Schnuerch
Summary: Thiolation of poly- and oligosaccharides introduces various favorable properties for tissue engineering and wound healing, including stable 3D networks, enhanced cell adhesion and signaling, and controlled release of active ingredients.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Gergely Kali, Bengi Ozkahraman, Flavia Laffleur, Patrick Knoll, Richard Wibel, Katrin Zoller, Andreas Bernkop-Schnurch
Summary: This study aimed to design and evaluate an anionic, thiolated cellulose derivative for its mucoadhesive and permeation-enhancing properties using enoxaparin as a model drug. The thiolated cellulose exhibited enhanced mucoadhesion on porcine intestinal mucosa and improved permeation in Caco-2 cell monolayer. In vivo studies in rats showed significantly higher oral bioavailability compared to the aqueous solution of the drug.
Article
Pharmacology & Pharmacy
Richard Wibel, Florina Veider, Barbara Hoyer, Joseph Chamieh, Andreas Bernkop-Schnuerch
Summary: Organic solvents have a substantial impact on the solubility and precipitation rate of drugs in self-emulsifying drug delivery systems. This impact is particularly significant for moderately lipophilic drugs.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2023)
Article
Pharmacology & Pharmacy
Victor Claus, Matthias Sandmeier, Nathalie Hock, Helen Spleis, Sera Lindner, Monika Kalb, Andreas Bernkop-Schnuerch
Summary: In this study, the lipophilicity of model proteins was increased by combining various surfactants with insulin, bovine serum albumin, and horseradish peroxidase. The key factors responsible for complex formation were identified. The formed complexes were stable in simulated gastrointestinal fluids and could be incorporated into self-emulsifying drug delivery systems.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2023)
Article
Pharmacology & Pharmacy
Zeynep Burcu Akkus-Dagdeviren, Sema Arisoy, Julian David Friedl, Andrea Fuerst, Ahmad Saleh, Andreas Bernkop-Schnuerch
Summary: The aim of this study was to develop enzyme-activated charge-reversal lipid nanoparticles (LNPs) as novel gene delivery systems. The researchers successfully anchored a transfection promoter on the surfaces of LNPs to achieve high encapsulation and efficient gene delivery. The experiment results showed that the enzyme-triggered charge reversal of LNPs resulted in significantly increased transfection efficiency in human alveolar epithelial cells.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2023)
Article
Pharmacology & Pharmacy
Nathalie Hock, Dennis To, Eva Sanchez Armengol, Simona Summonte, Anna Seybold, Christoph Federer, Andreas Bernkop-Schnuerch
Summary: The aim of this study was to develop biodegradable polyphosphate nanoparticles as long-acting drug delivery systems by utilizing ubiquitarian alkaline phosphatase. The nanoparticles were prepared and characterized, showing good stability and release characteristics. The results also demonstrated their biocompatibility and lack of toxicity. These findings open up new opportunities in parenteral drug delivery.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2023)
Review
Chemistry, Multidisciplinary
Florina Veider, Eva Sanchez Armengol, Andreas Bernkop-Schnuerch
Summary: The past two decades have seen significant progress in the development of surface charge-reversible nanoparticles for drug delivery and diagnosis. These nanoparticles can change their surface charge from negative to positive at the target site, thereby improving drug delivery and diagnostic agent sensitivity. They have also shown potential in overcoming biofilms and delivering antibiotics directly to cell membranes of microorganisms. This review highlights the latest design and emerging applications of charge-reversible nanoparticles in drug delivery and diagnosis.
Article
Engineering, Biomedical
Arne Matteo Joergensen, Christian Steinbring, Daniel Stengel, Dennis To, Pascal Schmid, Andreas Bernkop-Schnuerch
Summary: This study developed self-emulsifying drug delivery systems containing dry reverse micelles (SEDDS-dRMsPMB) loaded with the model peptide drug polymyxin B (PMB) using anionic (AOT), cationic (DODAB), amphoteric (SL), or non-ionic (P85) surfactants. These systems showed high payload, efficient cellular uptake, and maintained antimicrobial activity, suggesting a potential game-changing strategy for oral peptide drug delivery.
ADVANCED HEALTHCARE MATERIALS
(2023)
Article
Materials Science, Biomaterials
Dennis To, Gergely Kali, Soheil Haddadzadegan, Arne Matteo Joergensen, Katharina Nigl, Fabrizio Ricci, Andreas Bernkop-Schnuerch
Summary: Nanoemulsions with enhanced gastro-intestinal retention time can be achieved by incorporating thiolated surfactants into their surface. Two generations of thiolated surfactants were synthesized and characterized, and their incorporation into nanoemulsions improved the mucoadhesiveness. S-protected thiol derivatives showed the highest mucoadhesive properties among all tested surfactants.
ACS BIOMATERIALS SCIENCE & ENGINEERING
(2023)
Article
Chemistry, Physical
Katrin Zoeller, Anna Karlegger, Martyna Truszkowska, Daniel Stengel, Andreas Bernkop-Schnuerch
Summary: This study investigates the cellular uptake of hydrophobic complexes via nanocarriers using hydrophobic ion pairs (HIPs) formed between two fluorescent components. The results show that HIPs increase the lipophilicity of the model drugs and incorporating HIPs into nanoemulsions (NE) further enhances cellular uptake. HIPs serve as a powerful tool to visualize the cellular distribution of hydrophobic complexes and study their cellular uptake.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Pharmacology & Pharmacy
Greta Camilla Magnano, Marika Quadri, Elisabetta Palazzo, Roberta Lotti, Francesca Loschi, Stefano Dall'Acqua, Michela Abrami, Francesca Larese Filon, Alessandra Marconi, Dritan Hasa
Summary: This study aimed to investigate the loading of sildenafil citrate in three commercial transdermal vehicles using 3D full-thickness skin equivalent and compare the results with permeability experiments using porcine skin. The results showed that the results obtained using the 3D skin equivalent were comparable to those obtained using porcine skin, suggesting that the 3D skin model can be a valid alternative for ex-vivo skin absorption experiments.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2024)
Article
Pharmacology & Pharmacy
James W. Mckeage, Andrew Z. H. Tan, Andrew J. Taberner
Summary: Needle-free jet injection is a promising alternative drug delivery technique that offers rapid, non-invasive, and large-volume injections. The study presents a prototype multi-orifice nozzle and a computational fluid dynamic model to demonstrate the feasibility and effectiveness of this technology.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2024)