• Beta-glucan-loaded nanofiber dressing improves wound healing in diabetic mice 

      Grip, Jostein; Engstad, Rolf Einar; Skjæveland, Ingrid; Skalko-Basnet, Natasa; Isaksson, Johan; Basnet, Purusotam; Holsæter, Ann Mari (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-06-01)
      The increased prevalence of chronic wounds requires novel treatment options. The aim of this study was to develop a beta-glucan (βG)-loaded nanofiber wound dressing. Nanofibers were prepared using the needle-free Nanospider™ technology, an electrospinning method which enables the production of nanofibers at an industrial scale. The βG was selected as active ingredient based on its confirmed wound ...
    • Ceramide-containing liposomes with doxorubicin: time and cell-dependent effect of C6 and C12 ceramide 

      Øverbye, Anders; Holsæter, Ann Mari; Fusser, Markus; Skalko-Basnet, Natasa; Iversen, Tore Geir; Torgersen, Maria Lyngaas; Sønstevold, Tonje; Engebråten, Olav; Flatmark, Kjersti; Mælandsmo, Gunhild; Skotland, Tore; Sandvig, Kirsten (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-08-12)
      Doxorubicin, a widely used chemotherapeutic drug, has several potential high- risk side effects including cardiomyopathy. Furthermore, cellular resistance to this drug develops with time. By using liposomes as carrier vesicles both the side effects and drug resistance might be avoided. In this study we have investigated the cytotoxic effect of doxorubicin encapsulated in liposomes with and ...
    • Curcumin-In-Deformable Liposomes-In-ChitosanHydrogel as a Novel Wound Dressing 

      Ternullo, Selenia; Schulte Werning, Laura; Holsæter, Ann Mari; Skalko-Basnet, Natasa (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-12-20)
      A liposomes-in-hydrogel system as an advanced wound dressing for dermal delivery of curcumin was proposed for improved chronic wound therapy. Curcumin, a multitargeting poorly soluble active substance with known beneficial properties for improved wound healing, was incorporated in deformable liposomes to overcome its poor solubility. Chitosan hydrogel served as a vehicle providing superior wound ...
    • Deformable liposomes for skin therapy with human epidermal growth factor: The effect of liposomal surface charge 

      Ternullo, Selenia; Basnet, Purusotam; Holsæter, Ann Mari; Flaten, Gøril Eide; de Weerd, Louis; Skalko-Basnet, Natasa (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-07)
      The topical administration of exogenous human epidermal growth factor (hEGF) is a promising approach for improved chronic wound therapy. To develop therapeutically superior hEGF formulation, we prepared hEGF-containing neutral (NDLs), cationic (CDLs) and anionic (ADLs) deformable liposomes (DLs), respectively, since it is expected that the liposomal surface charge can affect both the liposomal ...
    • Dermal Application of Chloramphenicol - The Effect of Liposomes and Chitosan Hydrogel Formulations on ex vivo Permeation and Antimicrobial Activity 

      Holsæter, Ann Mari; Ingebrigtsen, Sveinung Gaarden; Skalko-Basnet, Natasa (Conference object; Konferansebidrag, 2017)
      Liposomes solubilize lipophilic drugs in the phospholipid membrane, and entrap hydrophilic drugs in its aqueous core. These vesicles provide a sustained- and targeted- drug release, and protect from degradation. Liposomes retain the drug onto/in the skin and improve skin drug deposition. Due to their liquid nature, a secondary vehicle, such as a hydrogel, is needed to obtain a necessary retention ...
    • Development and optimization of a new processing approach for manufacturing topical liposomes-in-hydrogel drug formulations by dual asymmetric centrifugation 

      Ingebrigtsen, Sveinung Gaarden; Skalko-Basnet, Natasa; Holsæter, Ann Mari (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-01-24)
      Objectives: The objective of the present study was to utilize dual asymmetric centrifugation (DAC) as a novel processing approach for the production of liposomes-in-hydrogel formulations. <br>Materials and Methods: Lipid films of phosphatidylcholine, with and without chloramphenicol (CAM), were hydrated and homogenized by DAC to produce liposomes in the form of vesicular phospholipid gels with a ...
    • Development of a novel beta-glucan supplemented hydrogel spray formulation and wound healing efficacy in a db/db diabetic mouse model 

      Grip, Jostein; Steene, Erik; Engstad, Rolf Einar; Hart, Jeff; Bell, Andrea; Skjærveland, Ingrid; Basnet, Purusotam; Skalko-Basnet, Natasa; Holsæter, Ann Mari (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-10-30)
      To relieve the severe economic and social burdens and patient suffering caused by the increasing incidence of chronic wounds, more effective treatments are urgently needed. In this study, we focused on developing a novel sprayable wound dressing with the active ingredient β-1,3/1,6-glucan (βG). Since βG is already available as the active ingredient in a commercial wound healing product provided as ...
    • Docetaxel Liposomes - A formulation Screening Study 

      Karlsen, Iselin; Skalko-Basnet, Natasa; Holsæter, Ann Mari (Conference object; Konferansebidrag, 2019)
      <p>Docetaxel (DOC) is a potent anticancer drug with several limitations, including poor solubility and the reported serious side effects, attributed to either the drug itself or the solvent used. Thus, it is interesting to entrap the drug into liposomes in order to solubilize the drug and improve the therapeutic outcome. <p>The fist aim of this study was to establish a small-scale screening method ...
    • Dyes in Disguise: characterization of fluorescently labeled liposomes 

      Cauzzo, Jennifer; Nystad, Mona; Holsæter, Ann Mari; Basnet, Purusotam; Skalko-Basnet, Natasa (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-07-09)
      The rather limited success of translation from basic research to clinical application has been highlighted as a major issue in the nanomedicine field. To identify the factors influencing the applicability of nanosystems as drug carriers and potential nanomedicine, we focused on following their fate through fluorescence-based assays, namely flow cytometry and imaging. These methods are often used to ...
    • Electrospinning of chloramphenicol-containing nanofibrous dressings for treatment of chronic wounds 

      Schulte Werning, Laura; Murugaiah, Anjanah; Skalko-Basnet, Natasa; Holsæter, Ann Mari (Conference object; Konferansebidrag, 2021-03-10)
      <p><i>Background</i> An efficient treatment is crucial to overcome the delayed healing process and high infection rate in chronic wounds. Nanofibrous dressings, having a nano‐sized fiber structure, can enhance cell ingrowth and support the healing process. In addition, nanofibers can deliver active ingredients e.g. antibiotics into the wound to treat wound infection. By incorporating broad‐spectrum ...
    • Following the fate of dye-containing liposomes in vitro 

      Cauzzo, Jennifer; Nystad, Mona; Holsæter, Ann Mari; Basnet, Purusotam; Skalko-Basnet, Natasa (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-07-09)
      The rather limited success of translation from basic research to clinical application has been highlighted as a major issue in the nanomedicine field. To identify the factors influencing the applicability of nanosystems as drug carriers and potential nanomedicine, we focused on following their fate through fluorescence-based assays, namely flow cytometry and imaging. These methods are often used to ...
    • Going skin deep: a direct comparison of penetration potential of lipid-based nanovesicles on the isolated perfused human skin flap model 

      Ternullo, Selenia; de Weerd, Louis; Holsæter, Ann Mari; Flaten, Gøril Eide; Skalko-Basnet, Natasa (Journal article; Tidsskriftartikkel, 2017-09-12)
      Phospholipid-based nanocarriers are attractive drug carriers for improved local skin therapy. In the present study, the recently developed isolated perfused human skin flap (IPHSF) model was used to directly compare the skin penetration enhancing potential of the three commonly used nanocarriers, namely conventional liposomes (CLs), deformable liposomes (DLs) and solid lipid nanoparticles (SLNs). ...
    • How docetaxel entrapment, vesicle size, zeta potential and stability change with liposome composition–A formulation screening study 

      Holsæter, Ann Mari; Wizgird, Kristina; Karlsen, Iselin; Hemmingsen, Jeanette Frimand; Brandl, Martin; Skalko-Basnet, Natasa (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-07-21)
      Limitations of the anticancer drug product Taxotere® have encouraged researchers to entrap the active ingredient docetaxel (DTX) into nanocarriers such as liposomes. However, until now no DTX-liposome formulation has reached the clinic. Hence, in the present study, different Soy-PC based DTX-liposome formulations were screened in an attempt to identify lipid-compositions with promising DTX-entrapment ...
    • Insight into the mechanism behind oral bioavailability-enhancement by nanosuspensions through combined dissolution/permeation studies 

      Lynnerup, Jakob Tobias; Eriksen, Jonas Borregaard; Bauer-Brandl, Annette; Holsæter, Ann Mari; Brandl, Martin (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-03-02)
      As numerous new drug candidates are poorly water soluble, enabling formulations are needed to increase their bioavailability for oral administration. Nanoparticles are a conceptually simple, yet resource consuming strategy for increasing drug dissolution rate, as predicting in vivo oral absorption using in vitro dissolution remains difficult. The objective of this study was to obtain insight into ...
    • The isolated perfused human skin flap model: A missing link in skin penetration studies? 

      Ternullo, Selenia; de Weerd, Louis; Flaten, Gøril Eide; Holsæter, Ann Mari; Skalko-Basnet, Natasa (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-10-05)
      Development of effective (trans)dermal drug delivery systems requires reliable skinmodels to evaluate skin drug penetration. The isolated perfused human skin flap remainsmetabolically active tissue for up to 6 h during in vitro perfusion. We introduce the isolated perfused human skin flap as a close-to-in vivo skin penetration model. To validate the model's ability to evaluate skin drug penetration ...
    • Multifunctional Nanofibrous Dressing with Antimicrobial and Anti-Inflammatory Properties Prepared by Needle-Free Electrospinning 

      Schulte Werning, Laura; Murugaiah, Anjanah; Singh, Bhupender; Johannessen, Mona; Engstad, Rolf Einar; Skalko-Basnet, Natasa; Holsæter, Ann Mari (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-21)
      An active wound dressing should address the main goals in wound treatment, which are improved wound healing and reduced infection rates. We developed novel multifunctional nanofibrous wound dressings with three active ingredients: chloramphenicol (CAM), beta-glucan (βG) and chitosan (CHI), of which βG and CHI are active nanofiber-forming biopolymers isolated from the cell walls of Saccharomyces ...
    • A new preparation method for preparation of liposomes-in-hydrogels primed for treatment of skin diseases 

      Ingebrigtsen, Sveinung Gaarden; Johansen, Kurt Jonny; Skalko-Basnet, Natasa; Holsæter, Ann Mari (Conference object; Konferansebidrag, 2014)
      <p>Liposomes are spherical vesicles that form spontaneously when phospholipids are dispersed in an aqueous medium. However, to get liposomes with a more unimodal size distribution, liposomes are usually processed further to reduced size and lammellarity, typically by extrusion, sonication or homogenization. <p>Liposome formulations for topical application needs a vehicle to assure the desirable ...
    • Old drug, new wrapping – A possible comeback for chloramphenicol? 

      Ingebrigtsen, Sveinung Gaarden; Didriksen, Alena; Johannessen, Mona; Skalko-Basnet, Natasa; Holsæter, Ann Mari (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-05-12)
      The antimicrobial drug chloramphenicol (CAM) exhibits activity against resistant bacteria, such as methicillin-resistant Staphylococcus aureus (MRSA). However, its use has been limited due to its toxicity. As the threat of antibiotic resistance continues to grow, a promising approach might be to increase the use of historical antimicrobial agents that demonstrate clinical efficacy, but are hampered ...
    • (Phospho)lipid-based nanosystems for skin administration 

      Vanić, Željka; Holsæter, Ann Mari; Skalko-Basnet, Natasa (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-10)
      Nanotechnology and nanomedicine provide a platform for advanced therapeutic strategies for dermal and transdermal drug delivery. The focus of this review is on the current state-of-art in lipid-based nanotechnology and nanomedicine for (trans)dermal drug therapy. Drug delivery nanosystems based on the (phospho)lipid constituents are characterized and compared, with the emphasis on their ability ...
    • Sprayable Carbopol hydrogel with soluble beta-1,3/1,6-glucan as an active ingredient for wound healing – Development and in-vivo evaluation 

      Grip, Jostein; Engstad, Rolf Einar; Skjærveland, Ingrid; Skalko-Basnet, Natasa; Holsæter, Ann Mari (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-06-21)
      Chronic wounds represent a significant health problem worldwide. There is a need for advanced- and cost-efficient wound healing products able to increase patient comfort and reduce the healing time. The aim of this study was to develop a sprayable hydrogel dressing with beta-glucan (βG) as the active ingredient, targeting future application in the treatment of both chronic and burn wounds. The βG ...