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Spontaneous formation of small and ultrasmall unilamellar vesicles in mixtures of drug surfactant and phospholipid: Effect of chemical structure of phospholipid tails on vesicle size.
J Colloid Interface Sci
December 2024
Department of Medicinal Chemistry, Uppsala University, P.O. Box 547, 751 23, Uppsala, Sweden. Electronic address:
We have investigated the effect of length and chemical structure of phospholipid tails on the spontaneous formation of unilamellar liposomal vesicles in binary solute mixtures of cationic drug surfactant and zwitterionic phosphatidylcholine phospholipids. Binary drug surfactant-phospholipid mixtures with four different phospholipids with identical headgroups (two saturated phospholipids 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC, 14:0) and 1,2-Dipalmitoyl-sn-glycero-3-phosphocholine (DPPC, 16:0), and two unsaturated lipids 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC, 18:1) and 1,2-Dierucoyl-sn-Glycero-3-Phosphatidylcholine (DEPC, 22:1)) combined with two different tricyclic antidepressant drugs (amitriptyline hydrochloride (AMT) and doxepin hydrochloride (DXP)) have been investigated with small-angle neutron scattering (SANS) and cryo-transmission electron microscopy (cryo-TEM). We observe a conspicuous impact of phospholipid tail structure on both micelle-to-vesicle transition point and vesicle size.
View Article and Find Full Text PDFAripiprazole-loaded niosome/chitosan-gold nanoparticles for breast cancer chemo-photo therapy.
BMC Biotechnol
December 2024
Department of Microbiology, Faculty of Veterinary and Agriculture, Islamic Azad University, Shabestar Branch, Shabestar, Iran.
Introduction: Breast cancer, a formidable global health challenge for women, necessitates innovative therapeutic strategies with enhanced efficacy and minimal side effects. Aripiprazole (ARI), a widely used schizophrenia medication, exhibits promising potential in the treatment of breast cancer. As cancer therapy evolves towards a combination approach, multimodal nano-based delivery systems, such as ARI-loaded niosomes (NIOs) combined with Chitosan-Au nanoparticles for chemo-photothermal therapy, show promise over traditional chemotherapy alone by enhancing targeted efficacy and minimizing side effects.
View Article and Find Full Text PDFBoc-Protected Phenylalanine and Tryptophan-Based Dipeptides: A Broad Spectrum Anti-Bacterial Agent.
Biopolymers
January 2025
Department of Biotechnology, National Institute of Technology Durgapur, Durgapur, West Bengal, India.
Dipeptides were constructed using hydrophobic amino acid residues following AMP prediction. After that Boc-modification was performed on the screened peptides and finally Boc-Phe-Trp-OMe and Boc-Trp-Trp-OMe were synthesized. Even though no inhibition zones were observed in agar well diffusion assays, minimum inhibitory concentration (MIC) analysis revealed anti-bacterial activity against both Gram-positive and Gram-negative bacteria, with MIC ranging from 230 to 400 μg/mL.
View Article and Find Full Text PDFMajor depressive disorder (MDD) is one of the most common diseases affecting millions of people worldwide. The use of existing antidepressants in many cases does not allow achieving stable remission, probably due to insufficient understanding of pathological mechanisms. This indicates the need for the development of more effective drugs based on in-depth understanding of MDD's pathophysiology.
View Article and Find Full Text PDFThe antidepressant-like activity of ketamine in the rat chronic mild stress model requires activation of cortical 5-HT1A receptors.
Behav Pharmacol
December 2024
Neurolixis SAS, Castres, France.
Ketamine displays efficacious rapid-acting antidepressant (RAAD) activity in the rat chronic mild stress (CMS) model. It rapidly reverses anhedonia (CMS-induced sucrose consumption deficit) and attenuates working memory deficit (novel object recognition: NOR) following both systemic (intraperitoneal, i.p.
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