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Zawada T, Bove T. Strongly Focused HIFU Transducers With Simultaneous Optical Observation for Treatment of Skin at 20 MHz. Ultrasound Med Biol 2022; 48:1309-1327. [PMID: 35410743 DOI: 10.1016/j.ultrasmedbio.2022.03.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 03/04/2022] [Accepted: 03/05/2022] [Indexed: 06/14/2023]
Abstract
High-intensity focused ultrasound (HIFU) transducers are proposed as a new treatment modality for dermatology. The shape and size of pressure fields generated by strongly focused transducers with an f-number equal to 0.75 operating at frequencies up to 20 MHz are analyzed analytically using the Lucas-Muir model and numerically with the wide-angle Khokhlov-Zabolotskaya-Kuznetsov method. The modeling results under quasi-linear conditions are compared against measurements performed in an acoustic tank with the aid of a fiberoptic hydrophone. The size of the focal zone expressed by their depth of focus and focal diameter is found to be directly controlled by their operating frequency and f-number. Devices manufactured for an operating frequency of 20 MHz are characterized by their 6 dB depth of focus of 490 μm and focal diameter of 80.6 µm. The devices are further studied at high power levels using a polyacrylic tissue-mimicking phantom. The devices are equipped with an optical observation system allowing simultaneous treatment and observation of the skin surface. In comparison to conventional cosmetic applications of HIFU, the devices analyzed are concluded to be ideal for treatment of precisely selected and confined layers of the human skin.
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Yang GH, Lee YB, Kang D, Choi E, Nam Y, Lee KH, You HJ, Kang HJ, An SH, Jeon H. Overcome the barriers of the skin: exosome therapy. Biomater Res 2021; 25:22. [PMID: 34217362 PMCID: PMC8254055 DOI: 10.1186/s40824-021-00224-8] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 06/23/2021] [Indexed: 01/06/2023] Open
Abstract
Exosomes are nano-sized cargos with a lipid bilayer structure carrying diverse biomolecules including lipids, proteins, and nucleic acids. These small vesicles are secreted by most types of cells to communicate with each other. Since exosomes circulate through bodily fluids, they can transfer information not only to local cells but also to remote cells. Therefore, exosomes are considered potential biomarkers for various treatments. Recently, studies have shown the efficacy of exosomes in skin defects such as aging, atopic dermatitis, and wounds. Also, exosomes are being studied to be used as ingredients in commercialized skin treatment products. In this review, we discussed the need for exosomes in skin therapy together with the current challenges. Moreover, the functional roles of exosomes in terms of skin treatment and regeneration are overviewed. Finally, we highlighted the major limitations and the future perspective in exosome engineering.
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Affiliation(s)
- Gi Hoon Yang
- Research Institute of Additive Manufacturing and Regenerative Medicine, Baobab Healthcare Inc., 55 Hanyangdaehak-Ro, Ansan-si, Gyeonggi-Do, 15588, South Korea
| | - Yoon Bum Lee
- Laboratory Animal Center, Daegu-Gyeongbuk Medical Innovation Foundation (DGMIF), 80 Cheombok-ro, Dong-gu, Daegu, 41061, South Korea
| | - Donggu Kang
- Research Institute of Additive Manufacturing and Regenerative Medicine, Baobab Healthcare Inc., 55 Hanyangdaehak-Ro, Ansan-si, Gyeonggi-Do, 15588, South Korea
| | - Eunjeong Choi
- Research Institute of Additive Manufacturing and Regenerative Medicine, Baobab Healthcare Inc., 55 Hanyangdaehak-Ro, Ansan-si, Gyeonggi-Do, 15588, South Korea
| | - Yoonju Nam
- Research Institute of Additive Manufacturing and Regenerative Medicine, Baobab Healthcare Inc., 55 Hanyangdaehak-Ro, Ansan-si, Gyeonggi-Do, 15588, South Korea
| | - Kyoung Ho Lee
- Laboratory Animal Center, Daegu-Gyeongbuk Medical Innovation Foundation (DGMIF), 80 Cheombok-ro, Dong-gu, Daegu, 41061, South Korea
| | - Hi-Jin You
- Department of Plastic Surgery, Korea University Ansan Hospital, 123 Jeokgeum-ro, Danwon-gu, Ansan-si, Gyeonggi-Do, 15355, South Korea
| | - Hyo Jin Kang
- Biomedical Research Center, Korea University Ansan Hospital, 123 Jeokgeum-ro, Danwon-gu, Ansan-si, Gyeonggi-Do, 15355, South Korea
| | - Sang Hyun An
- Laboratory Animal Center, Daegu-Gyeongbuk Medical Innovation Foundation (DGMIF), 80 Cheombok-ro, Dong-gu, Daegu, 41061, South Korea.
| | - Hojun Jeon
- Research Institute of Additive Manufacturing and Regenerative Medicine, Baobab Healthcare Inc., 55 Hanyangdaehak-Ro, Ansan-si, Gyeonggi-Do, 15588, South Korea.
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Fonseca DFS, Vilela C, Pinto RJB, Bastos V, Oliveira H, Catarino J, Faísca P, Rosado C, Silvestre AJD, Freire CSR. Bacterial nanocellulose-hyaluronic acid microneedle patches for skin applications: In vitro and in vivo evaluation. Mater Sci Eng C Mater Biol Appl 2020; 118:111350. [PMID: 33254971 DOI: 10.1016/j.msec.2020.111350] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 06/05/2020] [Accepted: 08/05/2020] [Indexed: 12/30/2022]
Abstract
The aim of the present study was to develop innovative patches for dermo-cosmetic applications based on dissolvable hyaluronic acid (HA) microneedles (MNs) combined with bacterial nanocellulose (BC) as the back layer. HA was employed as an active biomacromolecule, with hydrating and regenerative properties and volumizing effect, whereas BC was used as support for the incorporation of an additional bioactive molecule. Rutin, a natural antioxidant, was selected as the model bioactive compound to demonstrate the effectiveness of the system. The obtained HA-MNs arrays present homogenous and regular needles, with 200 μm in base width, 450 μm in height and 500 μm tip-to-tip distance, and with sufficient mechanical force to withstand skin insertion with a failure force higher than 0.15 N per needle. The antioxidant activity of rutin was neither affected by its incorporation in the MNs system nor by their storage at room temperature for 6 months. Preliminary in vivo studies in human volunteers unveiled their safety and cutaneous compatibility, as no significant changes in barrier function, stratum corneum hydration nor redness were detected. These results confirm the potentiality of this novel system for skin applications, e.g. cosmetics, taking advantage of the recognized properties of HA and the capacity of BC to control the release of bioactive molecules.
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Affiliation(s)
- Daniela F S Fonseca
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Carla Vilela
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Ricardo J B Pinto
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Verónica Bastos
- CESAM, Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Helena Oliveira
- CESAM, Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal
| | - José Catarino
- CBIOS - Centre for Research in Biosciences & Health Technologies, Lusófona University of Humanities and Technologies, 1740-024 Lisbon, Portugal
| | - Pedro Faísca
- CBIOS - Centre for Research in Biosciences & Health Technologies, Lusófona University of Humanities and Technologies, 1740-024 Lisbon, Portugal; Faculty of Veterinary Medicine, Lusófona University of Humanities and Technologies, Lisbon, Portugal
| | - Catarina Rosado
- CBIOS - Centre for Research in Biosciences & Health Technologies, Lusófona University of Humanities and Technologies, 1740-024 Lisbon, Portugal
| | - Armando J D Silvestre
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Carmen S R Freire
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
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Morais ES, Silva NHCS, Sintra TE, Santos SAO, Neves BM, Almeida IF, Costa PC, Correia-Sá I, Ventura SPM, Silvestre AJD, Freire MG, Freire CSR. Anti-inflammatory and antioxidant nanostructured cellulose membranes loaded with phenolic-based ionic liquids for cutaneous application. Carbohydr Polym 2019; 206:187-197. [PMID: 30553312 PMCID: PMC6441335 DOI: 10.1016/j.carbpol.2018.10.051] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 10/16/2018] [Accepted: 10/17/2018] [Indexed: 11/29/2022]
Abstract
The utilization of natural compounds, such as phenolic acids and biopolymers, in the healthcare domain is gaining increasing attention. In this study, bacterial nanocellulose (BC) membranes were loaded with ionic liquids (ILs) based on phenolic acids. These ionic compounds, with improved solubility and bioavailability, were prepared by combining the cholinium cation with anions derived from caffeic, ellagic and gallic acids. The obtained BC-ILs membranes were homogeneous, conformable and their swelling ability agreed with the solubility of each IL. These membranes revealed a controlled ILs dissolution rate in the wet state and high antioxidant activity. In vitro assays performed with Raw 264.7 macrophages and HaCaT keratinocytes revealed that these novel BC-ILs membranes are non-cytotoxic and present relevant anti-inflammatory properties. Diffusion studies with Hanson vertical diffusion cells showed a prolonged release profile of the ILs from the BC membranes. Thus, this work, successfully demonstrates the potential of BC-ILs membranes for skin treatment.
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Affiliation(s)
- Eduarda S Morais
- CICECO, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Nuno H C S Silva
- CICECO, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Tânia E Sintra
- CICECO, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Sónia A O Santos
- CICECO, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Bruno Miguel Neves
- Department of Medical Sciences and Institute of Biomedicine - iBiMED, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Isabel F Almeida
- UCIBIO-REQUIMTE, Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, 4051-401 Porto, Portugal
| | - Paulo C Costa
- UCIBIO-REQUIMTE, Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, 4051-401 Porto, Portugal
| | - Inês Correia-Sá
- Department of Plastic, Aesthetic, Reconstructive and Aesthetic Surgery, Centro Hospitalar de S. João, 4200-319 Porto, Portugal
| | - Sónia P M Ventura
- CICECO, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | | | - Mara G Freire
- CICECO, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Carmen S R Freire
- CICECO, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
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Boman EL, Satherley TWS, Schleich N, Paterson DB, Greig L, Louwe RJW. The validity of Acuros BV and TG-43 for high-dose-rate brachytherapy superficial mold treatments. Brachytherapy 2017; 16:1280-1288. [PMID: 28967561 DOI: 10.1016/j.brachy.2017.08.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 08/16/2017] [Accepted: 08/18/2017] [Indexed: 12/20/2022]
Abstract
PURPOSE The purpose of this work is to validate the Acuros BV dose calculation algorithm for high-dose-rate (HDR) brachytherapy superficial mold treatments in the absence of full scatter conditions and compare this with TG-43 dose calculations. We also investigate the impact of additional back scatter material (bolus) applied above surface molds to the dose distributions under the mold. METHODS AND MATERIALS The absorbed dose at various depths was compared for simulations performed using either TG-43 or Acuros BV dose calculations. Parameter variations included treatment area, thickness of the bolus, and surface shape (flat or spherical). Film measurements were carried out in a flat phantom. RESULTS Acuros BV calculations and film measurements agreed within 1.5% but were up to 15% lower than TG-43 dose calculations when no bolus was applied above the treatment catheters. The difference in dose at the prescription depth (1 cm below the central catheter) increased with increasing treatment area: 3.3% difference for a 3 × 3.5 cm2 source loading area, 7.4% for 8 × 9 cm2, and 13.4% for 18 × 19 cm2. The dose overestimation of the TG-43 model decreased when bolus was added above the treatment catheters. CONCLUSIONS The TG-43 dosimetry formalism cannot model surface mold treatments in the absence of full scatter conditions within 5% for loading areas larger than approximately 5 × 5 cm2. The TG-43 model results in an overestimation of the delivered dose, which increases with treatment area. This confirms the need for model-based dose calculation algorithms as discussed in TG-186.
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Affiliation(s)
- Eeva L Boman
- Blood & Cancer Centre, Wellington Hospital, Wellington, NZ; Department of Oncology, Tampere University Hospital, Tampere, Finland; Department of Medical Physics, Tampere University Hospital, Tampere, Finland.
| | | | | | | | - Lynne Greig
- Blood & Cancer Centre, Wellington Hospital, Wellington, NZ
| | - Rob J W Louwe
- Blood & Cancer Centre, Wellington Hospital, Wellington, NZ
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Moraes JDD, Bertolino SRA, Cuffini SL, Ducart DF, Bretzke PE, Leonardi GR. Clay minerals: Properties and applications to dermocosmetic products and perspectives of natural raw materials for therapeutic purposes-A review. Int J Pharm 2017; 534:213-219. [PMID: 29038067 DOI: 10.1016/j.ijpharm.2017.10.031] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 10/10/2017] [Accepted: 10/12/2017] [Indexed: 12/01/2022]
Abstract
Clay minerals are layered materials with a number of peculiar properties, which find many relevant applications in various industries. Since they are easily found everywhere, they are particularly attractive due to their economic viability. In the cosmetic industry, clay minerals are often used as excipients to stabilize emulsions or suspensions and to modify the rheological behavior of these systems. They also play an important role as adsorbents or absorbents, not only in cosmetics but also in other industries, such as pharmaceuticals. This reviewer believes that since this manuscript is presented as covering topical applications that include pharmaceuticals, some types of clay minerals should be considered as a potential material to be used as drug delivery systems. We review several applications of clay minerals to dermocosmetic products, relating them to the underlying properties of these materials and exemplifying with a number of clay minerals available in the market. We also discuss the use of clay minerals in topically-applied products for therapeutic purposes, specially for skin treatment and protection.
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Affiliation(s)
- Jemima Daniela Dias Moraes
- Medicine Department, Graduate Program in Translational Medicine, Federal University of São Paulo, Rua Pedro de Toledo, 720-2° Floor, 01039032, São Paulo, SP, Brazil.
| | | | - Silvia Lucia Cuffini
- Graduate Program in Material Science Engineering, Federal University of São Paulo, Rua Talim, 330, 12231-280, São José dos Campos, SP, Brazil.
| | - Diego Fernando Ducart
- Institute of de Geosciences, University of Campinas - Unicamp, Rua João Pandiá Calógeras, 51, 13083-870, Campinas, SP, Brazil.
| | - Pedro Eriberto Bretzke
- Nucleus of Chemical-Pharmaceutical Investigations, Graduate Program in Pharmaceutical Science, University of Vale do Itajaí, Rua Uruguai, 458 - Centro, 88302-202, Itajaí, SC, Brazil.
| | - Gislaine Ricci Leonardi
- Medicine Department, Graduate Program in Translational Medicine, Federal University of São Paulo, Rua Pedro de Toledo, 720-2° Floor, 01039032, São Paulo, SP, Brazil; Faculty of Pharmaceutical Science, University of Campinas - Unicamp, Rua Cândido Portinari, 200, 13083-859, Campinas, SP, Brazil.
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Ghaheh FS, Khoddami A, Alihosseini F, Gomes A, Ribeiro A, Cavaco-Paulo A, Silva C. Protein-based nanoformulations for α-tocopherol encapsulation. Eng Life Sci 2016; 17:523-527. [PMID: 32624796 DOI: 10.1002/elsc.201600188] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 09/23/2016] [Accepted: 10/27/2016] [Indexed: 11/08/2022] Open
Abstract
Nanoparticles of BSA and silk fibroin (SF) with entrapped α-tocopherol were produced via ultrasonic emulsification. Populations with particle size of 200-300 nm and highly negatively charged were obtained for all the tested formulations. Entrapment efficiencies of around 99% revealed the effective encapsulation of α-tocopherol into the produced nanoformulations. Generally, these nanodevices did not induce significant cytotoxicity to human skin keratinocytes for all the concentrations tested. The developed formulations showed free radical scavenging of ABTS.+ ability resulting from the synergistic effect between the proteins in formulation and the entrapped tocopherol. Overall, the results contribute for the establishment of BSA:VO and BSA:SF:VO as biodegradable and non-toxic nanoformulations for the functionalization of textile devices and controlled delivery of tocopherol into the skin.
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Affiliation(s)
| | - Akbar Khoddami
- Department of Textile Engineering Isfahan University of Technology Isfahan Iran
| | | | - Andreia Gomes
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology University of Minho, Campus of Gualtar Braga Portugal
| | - Artur Ribeiro
- Centre of Biological Engineering University of Minho, Campus of Gualtar Braga Portugal
| | - Artur Cavaco-Paulo
- Centre of Biological Engineering University of Minho, Campus of Gualtar Braga Portugal
| | - Carla Silva
- Centre of Biological Engineering University of Minho, Campus of Gualtar Braga Portugal
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Shaheen H, Nazir J, Firdous SS, Khalid AU. Cosmetic ethnobotany practiced by tribal women of Kashmir Himalayas. Avicenna J Phytomed 2014; 4:239-50. [PMID: 25068138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 11/06/2013] [Accepted: 12/10/2013] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Himalayan mountain populations have been dependent upon indigenous plant resources for their health care for many years. Tribal women are interested in use of local herbs for cosmetic purposes. The present work is based on the results of research conducted on cosmetic uses of some important plants by the tribal women in District Poonch, Azad Kashmir Pakistan. MATERIALS AND METHODS An ethno botanical survey was carried out during summer 2012. The data were collected from 310 female informants from 16 villages using questionnaire method and semi structured interviews. RESULTS A total of 39 plants species belonging to 20 families, being used for various cosmetic purposes were recorded. Indigenous species are traditionally used by the locals for problems including acne (16%), hair growth (11%), bad breath (12%), facial spots (9%), allergy, (9%), fairness (8%), wrinkles (8%), eye and lip care (9%). Seventy different recipes were recorded to be practiced by locals using herbal parts. The major plant parts utilized in herbal recipes included fruit (32.8%), Leaves (25.2%), seeds (13.4%) and roots (8.9%). Women of older (>30 years) age group showed greater (67%) response regarding knowledge and practice of cosmetic herbs. CONCLUSION This study was the 1(st) ever project focusing on cosmetic perspectives of ethno-botany in the area. Our study contributes to an improved understanding of ignored aspect of cosmetic ethnobotany among the local women. Further detailed investigations are recommended to record and preserve precious ethno-botanical knowledge of the area.
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