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Liposomes and skin

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https://www.readbyqxmd.com/read/29021093/disseminated-cryptococcosis-in-a-patient-taking-tocilizumab-for-castleman-s-disease
#1
Hiroaki Nishioka, Hiroshi Takegawa, Hiroki Kamei
Infections occur more frequently in patients receiving biologics. However, cryptococcal infection is uncommon in patients receiving tocilizumab, an interleukin-6 inhibitor, in contrast to patients receiving tumor necrosis factor-α inhibitors. In this report, we describe a case of disseminated cryptococcosis in a 55-year-old man who was receiving tocilizumab every 2 weeks along with daily prednisolone and cyclosporine for Castleman's disease. He initially developed cellulitis on both upper limbs, and his condition worsened despite antibacterial therapy...
October 8, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/29020350/monitoring-of-parasite-kinetics-in-indian-post-kala-azar-dermal-leishmaniasis
#2
Srija Moulik, Surya Jyati Chaudhuri, Bikash Sardar, Manab Ghosh, Bibhuti Saha, Nilay Kanti Das, Mitali Chatterjee
Background: The potential reservoirs of Leishmaniasis in South Asia include relapsed cases of visceral leishmaniasis, patients with Post-Kala-azar dermal leishmaniasis (PKDL) and an asymptomatically infected population. Therefore, assessment of cure in terms of parasite clearance, early detection of PKDL and asymptomatic VL are pivotal for ensuring elimination. This study aimed to monitor the efficacy of Miltefosine and Liposomal Amphotericin B (LAmB) in PKDL based on parasite load. Methods: Patients with PKDL were recruited from the Dermatology outpatient departments or during active field surveys...
September 13, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29019097/efficacy-of-conventional-and-liposomal-povidone-iodine-in-infected-mesh-skin-grafts-an-exploratory-study
#3
Peter M Vogt, Joerg Hauser, Stefan Mueller, Bjoern Bosse, Michael Hopp
INTRODUCTION: Infection is a major threat to wound healing and a leading cause of graft loss in patients undergoing meshed skin grafts (MSGs). Therefore, topical antisepsis is important in the overall treatment scheme. METHODS: An exploratory satellite group of 14 patients with infected MSGs were enrolled as part of a prospective, randomized, controlled, parallel-group, open-label, pilot Phase II study that investigated the efficacy and tolerability of 3% liposomal povidone-iodine hydrogel (PVP-ILH, Repithel(®); RepiGel(®)) versus chlorhexidine gauze in non-infected MSGs...
October 10, 2017: Infectious Diseases and Therapy
https://www.readbyqxmd.com/read/28990515/recent-advances-and-perspectives-in-liposomes-for-cutaneous-drug-delivery
#4
Amanda C Caritá, Josimar O Eloy, Marlus Chorilli, Robert J Lee, Gislaine Ricci Leonardi
The cutaneous route is attractive for the delivery of drugs in the treatment of a wide variety of diseases. However the stratum corneum (SC) is an effective barrier that hampers skin penetration. Within this context, liposomes emerge as a potential carrier for improving topical delivery of therapeutic agents. In this review, we aimed to discuss key aspects for the topical delivery by drug-loaded liposomes. Phospholipid type and phase transition temperature have been shown to affect liposomal topical delivery...
October 9, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28989281/efficacy-and-tolerability-of-liposomal-polyvinylpyrrolidone-iodine-hydrogel-for-the-localized-treatment-of-chronic-infective-inflammatory-dermatoses-an-uncontrolled-pilot-study
#5
Matthias Augustin, Lisa Goepel, Arnd Jacobi, Bjoern Bosse, Stefan Mueller, Michael Hopp
Infection is common in many chronic, inflammatory skin conditions but is often difficult to treat, in part due to growing bacterial resistance to antibiotics. Liposomal polyvinyl-pyrrolidone (PVP)-iodine hydrogel has a unique mode of action, combining the antiseptic and anti-inflammatory actions of PVP-iodine with the drug delivery and moisturizing properties of liposomes. We investigated the utility of liposomal PVP-iodine to treat infective dermatoses. In this prospective, single-arm (uncontrolled), open-label Phase II pilot study, patients with acne vulgaris (n=30), atopic dermatitis (n=20), impetigo contagiosa (n=10), and rosacea (n=10) received PVP-iodine (3%) hydrogel for ≤4 weeks...
2017: Clinical, Cosmetic and Investigational Dermatology
https://www.readbyqxmd.com/read/28976121/strategies-used-in-the-clinical-trials-of-gene-therapy-for-cancer
#6
Thekkuttuparambil Ananthanarayanan Ajith
Advances in understanding and manipulating genes have set the stage for scientists to alter a person's genetic material to prevent or treat diseases. Over the past decade, somatic gene therapy has been increasingly applied in clinical trials where the genetic material (DNA and RNA) introduced into a person's cell. Mutation and inactivation of the tumor suppressor genes are the unified concept of the development of tumor in humans. Therefore, researchers have discovered potential of gene therapies in the treatment of cancer...
September 2017: Journal of Experimental Therapeutics & Oncology
https://www.readbyqxmd.com/read/28975707/skin-penetration-and-uv-damage-prevention-by-nanoberries
#7
Paula Bucci, María Jimena Prieto, Laura Milla, María Natalia Calienni, Luis Martinez, Viviana Rivarola, Silvia Alonso, Jorge Montanari
BACKGROUND: Ethanolic extract from blueberry (Vaccinium myrtillus) is rich in anthocyanins and thus exhibits antioxidant activity. On the other hand, ultradeformable liposomes are capable of penetrating to the impermeable barrier of skin. Nanoberries are ultradeformable liposomes carrying blueberry extract. OBJECTIVES: In this study, their capacity to penetrate the stratum corneum and photodamage prevention were tested, with the aim of developing a topical formulation for skin protection from environmental damage...
October 3, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/28965793/systemic-cryptococcosis-in-an-immune-competent-child
#8
Arushi Gahlot Saini, Sooraj Patil, Triptee Agrawal, Aseem Basha, Rashi Garg, M R Shivaprakash, Pankaj Vaidya, Akshay Saxena, Pratibha Singhi
Crytococcus neoformans is an encapsulated yeast that frequently affects immune-compromised patients, although increasingly being detected in the immune-competent host as well. We report a case of disseminated cryptococcosis in a young child in whom no immune deficiency was yet identified. A 4-year-old child presented with high-grade fever, intermittent abdominal pain and generalized skin eruptions for the past two months. He had pallor, firm lymphadenopathy, skin lesions with scarring and firm hepatosplenomegaly...
September 28, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/28948854/in-vitro-evaluation-of-archaeosome-vehicles-for-transdermal-vaccine-delivery
#9
Yimei Jia, Michael J McCluskie, Dongling Zhang, Robert Monette, Umar Iqbal, Maria Moreno, Janelle Sauvageau, Dean Williams, Lise Deschatelets, Zygmunt J Jakubek, Lakshmi Krishnan
Archaeosomes composed of archaeal total polar lipids (TPL) or semi-synthetic analog vesicles have been used as vaccine adjuvants and delivery systems in animal models for many years. Typically administered by intramuscular or subcutaneous injections, archaeosomes can induce robust, long-lasting humoral and cell-mediated immune responses against entrapped antigens and provide protection in murine models of infectious disease and cancer. Herein, we evaluated various archaeosomes for transdermal delivery, since this route may help eliminate needle-stick injuries and needle re-use, and therefore increase patient compliance...
September 26, 2017: Journal of Liposome Research
https://www.readbyqxmd.com/read/28943208/preparation-of-mixed-monoterpenes-edge-activated-pegylated-transfersomes-to-improve-the-in-vivo-transdermal-delivery-efficiency-of-sinomenine-hydrochloride
#10
Juan Wang, Yan Wei, Ya-Rong Fei, Li Fang, Hang-Sheng Zheng, Chao-Feng Mu, Fan-Zhu Li, Yong-Sheng Zhang
Surfactants generally have been used as edge activators of transfersomes. However, surfactants edge activated transfersomes frequently lead to cutaneous irritation, skin lipid loss and other side effects after dermal administration. In this study, mixed monoterpenes edge activated PEGylated transfersomes (MMPTs) were prepared by ethanol injection process with sinomenine hydrochloride as a model drug. The formulation of MMPTs was optimized by an orthogonal design. We investigated skin permeation/deposition characteristics and pharmacokinetics of sinomenine hydrochloride loaded in MMPTs by comparing with liposomes using in vitro skin tests and in vivo cutaneous microdialysis...
September 21, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28943194/intradermal-vaccination-with-hollow-microneedles-a-comparative-study-of-various-protein-antigen-and-adjuvant-encapsulated-nanoparticles
#11
Guangsheng Du, Rania M Hathout, Maha Nasr, M Reza Nejadnik, Jing Tu, Roman I Koning, Abraham J Koster, Bram Slütter, Alexander Kros, Wim Jiskoot, Joke A Bouwstra, Juha Mönkäre
In this study, we investigated the potential of intradermal delivery of nanoparticulate vaccines to modulate the immune response of protein antigen using hollow microneedles. Four types of nanoparticles covering a broad range of physiochemical parameters, namely poly (lactic-co-glycolic) (PLGA) nanoparticles, liposomes, mesoporous silica nanoparticles (MSNs) and gelatin nanoparticles (GNPs) were compared. The developed nanoparticles were loaded with a model antigen (ovalbumin (OVA)) with and without an adjuvant (poly(I:C)), followed by the characterization of size, zeta potential, morphology, and loading and release of antigen and adjuvant...
September 21, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28937293/enhancing-tumor-specific-immune-responses-by-transcutaneous-vaccination
#12
Hanadi Saliba, Béatrice Heurtault, Hasnaa Bouharoun-Tayoun, Vincent Flacher, Benoît Frisch, Sylvie Fournel, Soulaima Chamat
Our understanding of the involvement of the immune system in cancer control has increased over recent years. However, the development of cancer vaccines intended to reverse tumor-induced immune tolerance remains slow as most current vaccine candidates exhibit limited clinical efficacy. The skin is particularly rich with multiple subsets of dendritic cells (DCs) that are involved to varying degrees in the induction of robust immune responses. Transcutaneous administration of cancer vaccines may therefore harness the immune potential of these DCs, however, this approach is hampered by the impermeability of the stratum corneum...
November 2017: Expert Review of Vaccines
https://www.readbyqxmd.com/read/28931213/a-review-on-the-efficacy-and-toxicity-of-different-doxorubicin-nanoparticles-for-targeted-therapy-in-metastatic-breast-cancer
#13
REVIEW
Ayman Shafei, Wesam El-Bakly, Ahmed Sobhy, Omar Wagdy, Ahmed Reda, Omar Aboelenin, Amr Marzouk, Khalil El Habak, Randa Mostafa, Mahmoud A Ali, Mahmoud Ellithy
In metastatic breast cancer (MBC), the conventional doxorubicin (DOX) has various problems due to lack of selectivity with subsequent therapeutic failure and adverse effects. DOX- induced cardiotoxicity is a major problem that necessitates the presence of new forms to decrease the risk of associated morbidity. Nanoparticles (NPs) are considered an important approach to selectively increase drug accumulation inside tumor cells and thus decreasing the associated side effects. Tumor cells develop resistance to chemotherapeutic agents through multiple mechanisms, one of which is over expression of efflux transporters...
September 16, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28919812/the-effect-of-local-topical-analgesics-on-incisional-pain-in-a-pig-model
#14
David Castel, Itai Sabbag, Sigal Meilin
Interest in the development of new topical/local drug administration for blocking pain at peripheral sites, with maximum drug activity and minimal systemic effects, is on the rise. In the review article by Kopsky and Stahl, four critical barriers in the process of research and development of topical analgesics were indicated. The active pharmaceutical ingredient (API) and the formulation are among the major challenges. The road to the development of such drugs passes through preclinical studies. These studies, if planned correctly, should serve as guidance for choosing the right API and formulation...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28917990/glycerosomes-investigation-of-role-of-1-2-dimyristoyl-sn-glycero-3-phosphatidycholine-dmpc-on-the-assembling-and-skin-delivery-performances
#15
Maria Letizia Manca, Maria Manconi, Marco Zaru, Donatella Valenti, Jose Esteban Peris, Pietro Matricardi, Anna Maria Maccioni, Anna Maria Fadda
Glycerosomes were formulated using 1,2-dimyristoyl-sn-glycero-3-phosphatidycholine (DMPC), diclofenac sodium salt and 10, 20 or 30% glycerol in the water phase, while corresponding liposomes were prepared with the same amount of DMPC and diclofenac, without glycerol. The aim of the present work was to evaluate the effect of the used phospholipid on vesicle features and ability to favour diclofenac skin deposition by comparing these results with those found in previous works performed using hydrogenated soy phosphatidylcholine (P90H) and dipalmitoylphosphatidylcholine (DPPC)...
September 14, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28917937/pyrazole-based-compounds-in-chitosan-liposomal-emulsion-for-antimicrobial-cotton-fabrics
#16
Ahmed Nada, Marwa Al-Moghazy, Ahmed A F Soliman, Gehan M T Rashwan, Taghreed Hosny Ahmed Eldawy, Ashraf Abd Elhakim Hassan, Galal Hosni Sayed
The chemistry of pyrazoles has gained increasing attention due to its diverse pharmacological properties such as antiviral, antagonist, antimicrobial, anticancer, anti-inflammatory, analgesic, anti-prostate cancer, herbicidal, acaricidal and insecticidal activities. 1-Phenyl pyrazole-3, 5-diamine, 4-[2-(4-methylphenyl) diazenyl] and 1H- pyrazole-3 (1), 5-diamine, 4-[2-(4-methylphenyl) diazenyl] (2) were synthesized, characterized and encapsulated into liposomal chitosan emulsions for textile finishing. The chemical modifications of cotton fabrics were demonstrated by infrared analysis...
September 13, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28916504/going-skin-deep-a-direct-comparison-of-penetration-potential-of-lipid-based-nanovesicles-on-the-isolated-perfused-human-skin-flap-model
#17
Selenia Ternullo, Louis de Weerd, Ann Mari Holsæter, Gøril Eide Flaten, Nataša Škalko-Basnet
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). Two fluorescent markers, calcein (hydrophilic) or rhodamine (lipophilic), were incorporated individually in the three nanosystems...
September 12, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28878315/cholesterol-modified-hydroxychloroquine-loaded-nanocarriers-in-bleomycin-induced-pulmonary-fibrosis
#18
Li Liu, Jun Ren, Zhiyao He, Ke Men, Ye Mao, Tinghong Ye, Hua Chen, Ling Li, Bocheng Xu, Yuquan Wei, Xiawei Wei
An increasing number of reports have suggested the use of hydroxychloroquine (HCQ) as an adjunct anti-cancer treatment to enhance the chemotherapeutic response, as well as for the treatment of several fibrotic skin diseases and cystic fibrosis. In this study, we synthesized a cholesterol-modified HCQ (Chol-HCQ) and hypothesized that a systemic delivery system with Chol-HCQ nanocarriers could be effective for the treatment of bleomycin-induced pulmonary fibrosis. Chol-HCQ significantly inhibits the proliferation of rat lung fibroblasts, regulates inflammation and ameliorates bleomycin-induced pulmonary fibrosis in rats...
September 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28845697/development-of-phospholipid-vesicle-based-permeation-assay-models-capable-of-evaluating-percutaneous-penetration-enhancing-effect
#19
Min Ma, Hong-Jie Di, Hui Zhang, Jun-Hong Yao, Jie Dong, Guo-Jun Yan, Hong-Zhi Qiao, Jun Chen
OBJECTIVES: The phospholipid vesicle-based permeation assay (PVPA) model has recently been introduced as an in vitro model which can mimic stratum corneum (SC) barriers to estimate the skin permeability of drugs. The aim of this study was to evaluate whether the PVPA model was suitable for the evaluation of penetration enhancing effect of skin penetration enhancers (PE). METHODS: The PVPA model was optimized by changing the lipid composition of both small liposomes (SL), and large liposomes (LL)...
December 2017: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/28833576/towards-the-development-of-a-rnai-based-topical-treatment-for-psoriasis-proof-of-concept-in-a-3d-psoriasis-skin-model
#20
Desmet Eline, Mireille Van Gele, Lynda Grine, Katrien Remaut, Jo Lambert
RNA interference has emerged as a powerful tool for therapeutic gene silencing, as it offers the possibility to silence virtually any known pathology-causing gene. However, in vivo delivery of RNAi molecules is hampered by their unfavorable physicochemical characteristics and susceptibility to degradation by endogenous enzymes. To overcome these limitations, we recently developed an elastic liposomal formulation, called DDC642, as topical delivery system of therapeutic RNAi molecules for skin disorders. In this study, we validated the therapeutic efficacy of DDC642-encapsulated RNAi molecules in the treatment of psoriasis using three different in vitro models: a standardized keratinocyte monolayer culture, psoriasis-induced keratinocytes and a psoriasis reconstructed skin model...
August 20, 2017: Experimental Dermatology
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