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Nanotechnology skin

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https://www.readbyqxmd.com/read/30094536/melanoma-treatment-from-conventional-to-nanotechnology
#1
REVIEW
Harshita Mishra, Pawan K Mishra, Adam Ekielski, Manu Jaggi, Zeenat Iqbal, Sushama Talegaonkar
INTRODUCTION: Melanoma is the most serious form of skin cancer causing most of the skin cancer-related deaths. The incidence of melanoma has risen so dramatically over past few years that no other solid or blood malignancy comes close to it in terms of increased incidence. The main problem associated with the treatment of melanoma is low response rate to the existing treatment modalities, which in turn is due to the incomplete response by chemotherapeutic agents and inherent resistance of melanoma cells...
August 9, 2018: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/30094529/biopolymers-applications-in-wound-healing-and-skin-tissue-engineering
#2
REVIEW
T G Sahana, P D Rekha
Wound is a growing healthcare challenge affecting several million worldwide. Lifestyle disorders such as diabetes increases the risk of wound complications. Effective management of wound is often difficult due to the complexity in the healing process. Addition to the conventional wound care practices, the bioactive polymers are gaining increased importance in wound care. Biopolymers are naturally occurring biomolecules synthesized by microbes, plants and animals with highest degree of biocompatibility. The bioactive properties such as antimicrobial, immune-modulatory, cell proliferative and angiogenic of the polymers create a microenvironment favorable for the healing process...
August 9, 2018: Molecular Biology Reports
https://www.readbyqxmd.com/read/30071805/nanotechnology-advances-for-hair-loss
#3
Maira N Pereira, Camila Y Ushirobira, Marcilio Ss Cunha-Filho, Guilherme M Gelfuso, Tais Gratieri
Alopecia is the partial or total reduction of hair in a specific area of the skin that affects millions of men and women worldwide. Most common approved treatments present inconvenient therapeutic regimes and serious adverse effects. In this scenario, nanoencapsulation has emerged as a relatively simple technology for improving the therapeutic outcome of this pathology, promoting a targeted drug delivery with enhanced local bioavailability, which could reduce the adverse effects. Herein, we present some recent studies involving the nanosystems developed for the pharmacological treatment of alopecia, highlighting how each system represents an improvement in relation to conventional drug products and the future perspectives of these new technologies in reaching the market...
August 2018: Therapeutic Delivery
https://www.readbyqxmd.com/read/30051726/microneedle-arrays-for-vaccine-delivery-the-possibilities-challenges-and-use-of-nanoparticles-as-a-combinatorial-approach-for-enhanced-vaccine-immunogenicity
#4
Aoife Maria Rodgers, Ana Sara Cordeiro, Adrien Kissenpfennig, Ryan F Donnelly
Vaccination is one of the greatest breakthroughs of modern preventative medicine. Despite this, there remain problems surrounding delivery, efficacy and compliance. Thus, there is a pressing need to develop cost-effective vaccine delivery systems that could expand the use of vaccines, particularly within developing countries. Microneedle (MN) arrays, given their ease of use, painlessness and ability to target skin antigen presenting cells, provide an attractive platform for improved vaccine delivery and efficacy...
August 1, 2018: Expert Opinion on Drug Delivery
https://www.readbyqxmd.com/read/30005092/nitric-oxide-releasing-nanoparticles-as-a-strategy-to-improve-current-onychomycosis-treatments
#5
Caroline B Costa-Orlandi, Breanne Mordorski, Ludmila M Baltazar, Maria José S Mendes-Giannini, Joel M Friedman, Joshua D Nosanchuk, Adam J Friedman
Topical antimicrobials are the ideal mode of onychomycosis treatment for efficient drug delivery and avoidance of sytemic effects associated with oral medications. However, high treatment costs, tissue penetration limitations, and low cure rates have continued to pose major challenges. To capitalize on the progress made by topical efinaconazole solution, efinaconazole was combined with inexpensive, previously-characterized nitric oxide releasing nanoparticles (NO-np), which have been shown to offer sustained nitric oxide release over time and enhanced barrier penetration, while exerting broad spectrum antimicrobial and immunomodulating properties...
July 1, 2018: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/29920573/graphene-and-graphene-oxide-induce-ros-production-in-human-hacat-skin-keratinocytes-the-role-of-xanthine-oxidase-and-nadh-dehydrogenase
#6
Marco Pelin, Laura Fusco, Cristina Martín, Silvio Sosa, Javier Frontiñán-Rubio, Jose Miguel González-Domínguez, Mario Durán-Prado, Ester Vázquez, Maurizio Prato, Aurelia Tubaro
The extraordinary physicochemical properties of graphene-based nanomaterials (GBNs) make them promising tools in nanotechnology and biomedicine. Considering the skin contact as one of the most feasible exposure routes to GBNs, the mechanism of toxicity of two GBNs (few-layer-graphene, FLG, and graphene oxide, GO) towards human HaCaT skin keratinocytes was investigated. Both materials induced a significant mitochondrial membrane depolarization: 72 h cell exposure to 100 μg mL-1 FLG or GO increased mitochondrial depolarization by 44% and 56%, respectively, while the positive control valinomycin (0...
July 5, 2018: Nanoscale
https://www.readbyqxmd.com/read/29807522/current-state-of-nanomedicines-in-the-treatment-of-topical-infectious-disorders
#7
Kanika Thakur, Gajanand Sharma, Bhupinder Singh, Sanjay Chhibber, Om Prakash Katare
BACKGROUND: Topical infections, involving a number of diseases such as impetigo, eczema, pustular acne, psoriasis and infected seborrheic dermatitis are one among the many challenges to health which stand out for their profound impact on human species. The treatment of topical infections has always been a difficult proposition because of the lack of efficacy of existing anti-infectives, longer period of treatment and yet incomplete recovery. The increasing emergence of antibiotic resistant bacterial strains like Staphylococcus aureus, Methicillin-Resistant Staphylococcus aureus (MRSA) and Pseudomonas aeruginosa undermine the need of development of new delivery systems to enhance the therapeutic efficacy of existing topical anti-infectives...
May 28, 2018: Recent Patents on Anti-infective Drug Discovery
https://www.readbyqxmd.com/read/29785318/role-of-nanotechnology-in-cosmeceuticals-a-review-of-recent-advances
#8
REVIEW
Shreya Kaul, Neha Gulati, Deepali Verma, Siddhartha Mukherjee, Upendra Nagaich
Nanotechnology manifests the progression in the arena of research and development, by increasing the efficacy of the product through delivery of innovative solutions. To overcome certain drawbacks associated with the traditional products, application of nanotechnology is escalating in the area of cosmeceuticals. Cosmeceuticals are regarded as the fastest growing segment of the personal care industry and the use has risen drastically over the years. Nanocosmeceuticals used for skin, hair, nail, and lip care, for conditions like wrinkles, photoaging, hyperpigmentation, dandruff, and hair damage, have come into widespread use...
2018: Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29772963/simplifying-skin-disease-diagnosis-with-topical-nanotechnology
#9
David C Yeo, Chenjie Xu
A new study published in the journal Nature Biomedical Engineering1 documents a novel diagnostic technology that exploits topically applied nanotechnology to detect skin tissue biomarkers for diagnosis. This concept is demonstrated by noninvasively imaging connective tissue growth factor (CTGF) mRNA in abnormal scar cells, whole tissue, and animal models. In this commentary, we highlight the main findings and discuss their implications. Successful implementation in the clinic could give rise to self-applied, biopsy-free diagnostic technology and significantly reduce healthcare burden...
August 2018: SLAS Technology
https://www.readbyqxmd.com/read/29579762/strategies-in-development-and-delivery-of-nanotechnology-based-cosmetic-products
#10
Usama Ahmad, Zeeshan Ahmad, Ahmed Abdullah Khan, Juber Akhtar, Satya Prakash Singh, Farhan Jalees Ahmad
The science of formulation involving cosmetic ingredients has always been a challenge since the release of active components greatly depends upon the carrier system involved and the selectivity of skin barrier. The principle obstacle of the skin resides in the epidermis and it's hard for many active components to cross it. The formulation related factors like size of particles, viscosity and lipophilicity of the components also play an important role in permeation of the dermal composition. Though widely used; conventional creams and gels still struggle in terms of success...
March 26, 2018: Drug Research
https://www.readbyqxmd.com/read/29555445/influence-of-nanoparticle-size-on-the-skin-penetration-skin-retention-and-anti-inflammatory-activity-of-non-steroidal-anti-inflammatory-drugs
#11
Junko Yokota, Shojiro Kyotani
BACKGROUND: This study aims to evaluate the influence of nanoparticle size on the in vitro percutaneous penetration and retention and in vivo anti-inflammatory efficacy of percutaneously delivered non-steroidal anti-inflammatory drugs. METHODS: Indomethacin, ketoprofen and piroxicam were incorporated into nanoparticles. The nanoparticles, or the bulk-drug equivalents, were suspended in a hydrophilic ointment and compared for their ability to facilitate percutaneous drug penetration and retention in vitro...
June 2018: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/29532749/nanotechnological-advances-for-cutaneous-release-of-tretinoin-an-approach-to-minimize-side-effects-and-improve-therapeutic-efficacy
#12
Ana Claudia Pompeu Raminelli, Valeria Romero, Mohammad H Semreen, Gislaine Ricci Leonardi
The clinical efficacy of the topical tretinoin is widely studied and has been well established for many therapeutic interventions, among some, photoaging, acne, and melasma. However, the side effects, mainly cutaneous irritation, erythema, xerosis and peeling, remain major obstacle to the patient compliance. Besides, the insight regarding the drug delivery profile is essential to understand the therapeutic action of the drug. Herein we highlight further advances and an update on tretinoin delivery systems such as liposomes, niosomes, solid lipid nanoparticles, nanostructured lipid carriers, cyclodextrins, nanostructured polymers and other technological systems that reduce its side effects and improve the permeation profile to potentiate efficacy and drug safety on the skin...
March 12, 2018: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/29465253/nanocrystal-a-novel-approach-to-overcome-skin-barriers-for-improved-topical-drug-delivery
#13
Viral Patel, Om Prakash Sharma, Tejal Mehta
Skin is an important route of drug delivery for the treatment of various dermatological conditions. The advent of nanotechnology is paving the roadmaps for topical drug delivery by providing sustained release as well as maintaining a localized effect, outweighing the toxicity concern. Area covered: This review highlighted the morphology of skin, its barrier nature as well as drug penetration pathways after topical application of formulations. The existing methods to improve topical drug delivery, by infringing or permeating the skin barriers, are discussed...
April 2018: Expert Opinion on Drug Delivery
https://www.readbyqxmd.com/read/29463380/metronidazole-loaded-polyethyleneimine-and-chitosan-based-liquid-crystalline-system-for-treatment-of-staphylococcal-skin-infections
#14
Francesca Damiani Victorelli, Giovana Maria Fioramonti Calixto, Matheus Aparecido Dos Santos Ramos, Taís Maria Bauab, Marlus Chorilli
Staphylococcus aureus is a common gram-positive bacterium of the human skin microbiota. It is also a dangerous pathogen that can cause serious and even lethal skin infections. The topical administration of metronidazole via nanotechnology-based drug delivery systems, such as liquid crystalline systems, can modulate both the drug permeation and activity, decreasing its side effects and increasing the drug potent activity against the gram-positive bacteria. This study aimed at: (1) structurally developing and characterizing a liquid crystalline systems composed of chitosan and polyethyleneimine dispersion as the aqueous phase, oleic acid as the oily phase, and ethoxylated and propoxylated cetyl alcohol as the surfactant (FPC) for metronidazole incorporation (0...
January 1, 2018: Journal of Biomedical Nanotechnology
https://www.readbyqxmd.com/read/29440895/biosynthesized-silver-and-gold-nanoparticles-are-potent-antimycotics-against-opportunistic-pathogenic-yeasts-and-dermatophytes
#15
Andrea Rónavári, Nóra Igaz, Mohana Krishna Gopisetty, Bettina Szerencsés, Dávid Kovács, Csaba Papp, Csaba Vágvölgyi, Imre Miklós Boros, Zoltán Kónya, Mónika Kiricsi, Ilona Pfeiffer
Background: Epidemiologic observations indicate that the number of systemic fungal infections has increased significantly during the past decades, however in human mycosis, mainly cutaneous infections predominate, generating major public health concerns and providing much of the impetus for current attempts to develop novel and efficient agents against cutaneous mycosis causing species. Innovative, environmentally benign and economic nanotechnology-based approaches have recently emerged utilizing principally biological sources to produce nano-sized structures with unique antimicrobial properties...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29284390/imparting-pharmaceutical-applications-to-the-surface-of-fabrics-for-wound-and-skin-care-by-ultrasonic-waves
#16
Aharon Gedanken, Nina Perkas, Ilana Perelshtein, Anat Lipovsky
The review, reports on the functionalization of textiles for the treatment of wounds and skin diseases such as acne. In view of the growing demand for high-quality textiles, much research is focused on the creation of antimicrobial finishings for fabrics, in order to protect customers from pathogenic or odor-generating microorganisms. We present coatings from inorganic, organic and biochemical nanoparticles (NPs) on surfaces that impart the ability to kill bacteria, avoid biofilm formation and speed up the recovery of wounds...
December 29, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/29184403/confocal-laser-scanning-microscopy-to-estimate-nanoparticles-human-skin-penetration-in-vitro
#17
Ying Zou, Anna Celli, Hanjiang Zhu, Akram Elmahdy, Yachao Cao, Xiaoying Hui, Howard Maibach
Objective: With rapid development of nanotechnology, there is increasing interest in nanoparticle (NP) application and its safety and efficacy on human skin. In this study, we utilized confocal laser scanning microscopy to estimate NP skin penetration. Methods: Three different-sized polystyrene NPs marked with red fluorescence were applied to human skin, and Calcium Green 5N was used as a counterstain. Dimethyl sulfoxide (DMSO) and ethanol were used as alternative vehicles for NPs...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29161677/nanotechnology-based-recent-approaches-for-sensing-and-remediation-of-pesticides
#18
REVIEW
Deepak Rawtani, Nitasha Khatri, Sanjiv Tyagi, Gaurav Pandey
Pesticides are meant to control and destroy the pests and weeds. They are classified into different categories on the basis their origin and type of pest they target. Chemical pesticides such as insecticides, herbicides and fungicides are commonly used in agricultural fields. However, the excessive use of these agrochemicals have adverse effects on environment such as reduced population of insect pollinators, threat to endangered species and habitat of birds. Upon consumption; chemical pesticides also cause various health issues such as skin, eye and nervous system related problems and cancer upon prolonged exposure...
January 15, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29031203/local-anaesthetic-pain-relief-therapy-in-vitro-and-in-vivo-evaluation-of-a-nanotechnological-formulation-co-loaded-with-ropivacaine-and-dexamethasone
#19
Yongxin Zhang, Yaocun Yue, Meng Chang
Combination therapy is frequently applied to anesthesia and analgesia for its benefits, which includes prolonged analgesia following peripheral nerve blockade, and reduced side effects. The aim of this study was to develop chitosan (CH) coated poly(ε-caprolactone) (PCL) nanoparticles to co-deliver ropivacaine (RPV) and dexamethasone (DEM) (RPV/DEM CH-PCL NPs) for the prolongation of anesthesia and pain relief. In the present study, RPV/DEM CH-PCL NPs were fabricated. The properties of CH-PCL NPs were evaluated for their particle sizes, zeta potential, drug loading capacity and in vitro drug release profile...
December 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28969628/bio-mimicking-nano-and-micro-structured-surface-fabrication-for-antibacterial-properties-in-medical-implants
#20
REVIEW
Alka Jaggessar, Hesam Shahali, Asha Mathew, Prasad K D V Yarlagadda
Orthopaedic and dental implants have become a staple of the medical industry and with an ageing population and growing culture for active lifestyles, this trend is forecast to continue. In accordance with the increased demand for implants, failure rates, particularly those caused by bacterial infection, need to be reduced. The past two decades have led to developments in antibiotics and antibacterial coatings to reduce revision surgery and death rates caused by infection. The limited effectiveness of these approaches has spurred research into nano-textured surfaces, designed to mimic the bactericidal properties of some animal, plant and insect species, and their topographical features...
October 2, 2017: Journal of Nanobiotechnology
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