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Vaseem RS, D’cruz A, Shetty S, - H, Vardhan A, R SS, Marques SM, Kumar L, Verma R. Transdermal Drug Delivery Systems: A Focused Review of the Physical Methods of Permeation Enhancement. Adv Pharm Bull 2024; 14:67-85. [PMID: 38585458 PMCID: PMC10997930 DOI: 10.34172/apb.2024.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 07/07/2023] [Accepted: 10/08/2023] [Indexed: 04/09/2024] Open
Abstract
The skin is the body's largest organ and serves as a site of administration for various medications. Transdermal drug delivery systems have several advantages over traditional delivery systems. It has both local and systemic therapeutic properties. Controlled plasma drug levels, reduced dosing frequency, and avoidance of hepatic first-pass metabolism are just a few of these systems' advantages. To achieve maximum efficacy, it is critical to understand the kinetics, physiochemical properties of the drug moiety, and drug transport route. This manuscript focused on the principles of various physical means to facilitate transdermal drug delivery. Some examples are iontophoresis, electrophoresis, photomechanical waves, ultrasound, needleless injections, and microneedles. Mechanical, chemical, magnetic, and electrical energy are all used in physical methods. A major advantage of physical methods is their capability to abbreviate pain, which can be used for effective disease management. Further investigation should be carried out at the clinical level to understand these methods for effective drug delivery.
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Affiliation(s)
- Rifath Sheikh Vaseem
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576 104, Udupi, Karnataka, India
| | - Alison D’cruz
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576 104, Udupi, Karnataka, India
| | - Srishti Shetty
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576 104, Udupi, Karnataka, India
| | - Hafsa -
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576 104, Udupi, Karnataka, India
| | - Aditya Vardhan
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576 104, Udupi, Karnataka, India
| | - Shreya Shenoy R
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576 104, Udupi, Karnataka, India
| | - Shirleen Miriam Marques
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576 104, Udupi, Karnataka, India
| | - Lalit Kumar
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576 104, Udupi, Karnataka, India
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Hajipur 844 102, Vaishali, Bihar, India
| | - Ruchi Verma
- Department of Pharmaceutical Chemistry, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576 104, Udupi, Karnataka, India
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Bülow M, Best N, Brugger S, Derlien S, Loudovici-Krug D, Lemhöfer C. The effect of lidocaine iontophoresis for the treatment of tinnitus: a systematic review. Eur Arch Otorhinolaryngol 2023; 280:495-503. [PMID: 36102987 PMCID: PMC9849149 DOI: 10.1007/s00405-022-07645-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 09/03/2022] [Indexed: 01/22/2023]
Abstract
PURPOSE Tinnitus is a common symptom with multiple causes and treatment options. Previous studies have investigated the effect of lidocaine iontophoresis. The aim of this review is to systematically present the effects on tinnitus and to derive possible effects. METHODS In accordance to the PRISMA statement, the search and analysis were performed. An abstract in German or English and a performed intervention with lidocaine iontophoresis for the treatment of tinnitus, independent of the study design, were considered as inclusion criteria. Due to the heterogeneity of the studies, only a narrative synthesis was performed. RESULTS The search yielded 179 studies of which 170 were excluded. Six full-texts and three abstracts were included. In total, 957 patients were treated with lidocaine iontophoresis. The percent improvement in symptoms after lidocaine iontophoresis ranged from 4% to 62%. The qualitative assessment of the studies resulted in an overall "weak" rating for all of them. CONCLUSIONS Due to the heterogeneity and the limited quality of the studies found, no clear statement can be made about the efficacy. The number of those who benefited from therapy varied widely. In addition, it cannot be ruled out that the effect was merely due to electrical stimulation of the cochlea.
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Affiliation(s)
- Marcus Bülow
- Institute for Physiotherapy, University Hospital Jena, Am Klinikum 1, 07743, Jena, Germany
| | - Norman Best
- Institute for Physiotherapy, University Hospital Jena, Am Klinikum 1, 07743, Jena, Germany
| | - Sebastian Brugger
- Institute for Physiotherapy, University Hospital Jena, Am Klinikum 1, 07743, Jena, Germany
| | - Steffen Derlien
- Institute for Physiotherapy, University Hospital Jena, Am Klinikum 1, 07743, Jena, Germany
| | - Dana Loudovici-Krug
- Institute for Physiotherapy, University Hospital Jena, Am Klinikum 1, 07743, Jena, Germany
| | - Christina Lemhöfer
- Institute for Physiotherapy, University Hospital Jena, Am Klinikum 1, 07743, Jena, Germany.
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Zhao F, Su Y, Wang J, Romanova S, DiMaio DJ, Xie J, Zhao S. A Highly Efficacious Electrical Biofilm Treatment System for Combating Chronic Wound Bacterial Infections. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2208069. [PMID: 36385439 PMCID: PMC9918715 DOI: 10.1002/adma.202208069] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 10/24/2022] [Indexed: 05/26/2023]
Abstract
Biofilm infection has a high prevalence in chronic wounds and can delay wound healing. Current treatment using debridement and antibiotic administration imposes a significant burden on patients and healthcare systems. To address their limitations, a highly efficacious electrical antibiofilm treatment system is described in this paper. This system uses high-intensity current (75 mA cm-2 ) to completely debride biofilm above the wound surface and enhance antibiotic delivery into biofilm-infected wounds simultaneously. Combining these two effects, this system uses short treatments (≤2 h) to reduce bacterial count of methicillin-resistant S. aureus (MRSA) biofilm-infected ex vivo skin wounds from 1010 to 105.2 colony-forming units (CFU) g-1 . Taking advantage of the hydrogel ionic circuit design, this system enhances the in vivo safety of high-intensity current application compared to conventional devices. The in vivo antibiofilm efficacy of the system is tested using a diabetic mouse-based wound infection model. MRSA biofilm bacterial count decreases from 109.0 to 104.6 CFU g-1 at 1 day post-treatment and to 103.3 CFU g-1 at 7 days post-treatment, both of which are below the clinical threshold for infection. Overall, this novel technology provides a quick, safe, yet highly efficacious treatment to chronic wound biofilm infections.
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Affiliation(s)
- Fan Zhao
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, 68198, USA
- Department of Surgery, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Yajuan Su
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, 68198, USA
- Department of Surgery, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Junying Wang
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, 68198, USA
- Department of Surgery, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Svetlana Romanova
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Dominick J DiMaio
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Jingwei Xie
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, 68198, USA
- Department of Surgery, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Siwei Zhao
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, 68198, USA
- Department of Surgery, University of Nebraska Medical Center, Omaha, NE, 68198, USA
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Permeation Effect Analysis of Drug Using Raman Spectroscopy for Iontophoresis. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12146871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Iontophoresis technology could improve the efficiency of transdermal drug delivery through the skin and be a promising prospective tool for clinical drug therapy in the near future. Surface-enhanced Raman spectroscopy (SERS) was used to analyze the concentration distribution of penicillin sodium in the skin of a mice model, and the iontophoresis delivery efficiency of drug percutaneous permeation was evaluated with various times and concentrations of penicillin sodium through Raman spectra. The results showed both the action time and drug concentration for iontophoresis can deeply influence transdermal drug delivery effects, and the Raman spectrum might be an effective method to evaluate transdermal drug delivery efficiency.
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Zhao F, Fan S, Ghate D, Romanova S, Bronich TK, Zhao S. A Hydrogel Ionic Circuit Based High-Intensity Iontophoresis Device for Intraocular Macromolecule and Nanoparticle Delivery. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2107315. [PMID: 34716729 PMCID: PMC8813891 DOI: 10.1002/adma.202107315] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/13/2021] [Indexed: 05/06/2023]
Abstract
Iontophoresis is an electrical-current-based, noninvasive drug-delivery technology, which is particularly suitable for intraocular drug delivery. Current ocular iontophoresis devices use low current intensities that significantly limit macromolecule and nanoparticle (NP) delivery efficiency. Increasing current intensity leads to ocular tissue damage. Here, an iontophoresis device based on a hydrogel ionic circuit (HIC), for high-efficiency intraocular macromolecule and NP delivery, is described. The HIC-based device is capable of minimizing Joule heating, effectively buffering electrochemical (EC) reaction-generated pH changes, and absorbing electrode overpotential-induced heating. As a result, the device allows safe application of high current intensities (up to 87 mA cm-2 , more than 10 times higher than current ocular iontophoresis devices) to the eye with minimal ocular cell death and tissue damage. The high-intensity iontophoresis significantly enhances macromolecule and NP delivery to both the anterior and posterior segments by up to 300 times compared to the conventional iontophoresis. Therapeutically effective concentrations of bevacizumab and dexamethasone are delivered to target tissue compartments within 10-20 min of iontophoresis application. This study highlights the significant safety enhancement enabled by an HIC-based device design and the potential of the device to deliver therapeutic doses of macromolecule and NP ophthalmic drugs within a clinically relevant time frame.
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Affiliation(s)
- Fan Zhao
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, 68198, USA
- Department of Surgery, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Shan Fan
- Ophthalmology and Visual Sciences, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Deepta Ghate
- Truhlsen Eye Institute, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Svetlana Romanova
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Tatiana K Bronich
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Siwei Zhao
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, 68198, USA
- Department of Surgery, University of Nebraska Medical Center, Omaha, NE, 68198, USA
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van Erp PEJ, Peppelman M, Falcone D. Noninvasive analysis and minimally invasive in vivo experimental challenges of the skin barrier. Exp Dermatol 2019; 27:867-875. [PMID: 30019358 DOI: 10.1111/exd.13743] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 06/27/2018] [Accepted: 07/13/2018] [Indexed: 12/19/2022]
Abstract
In this review, we aim to give a concise and selective overview of noninvasive biophysical analysis techniques for skin barrier analysis (transepidermal water loss, electrical methods, confocal Raman microspectroscopy, sebumeter, reflectance spectrophotometry, tristimulus colorimetry, diffuse reflectance spectroscopy and reflectance confocal microscopy), including advantages and limitations. Rather than giving an exhaustive description of the many techniques currently available, we show the usefulness of a representative selection of techniques in the functional and morphological evaluation of the skin barrier. Furthermore, we introduce human minimally invasive skin challenging models as a means to study the mechanisms regulating skin homoeostasis and disease and subsequently show how biophysical analysis techniques can be combined with these in vivo skin challenging models in the functional and morphological evaluation of the skin barrier in healthy human skin. We are convinced that the widespread application of biophysical analysis techniques in dermatological practice and in cosmetic sciences will prove invaluable in offering personalized and noninvasive skin treatment solutions. Furthermore, combining the human in vivo challenging models with these novel noninvasive techniques will provide valuable methodology and tools for detailed characterization of the skin barrier in health and disease.
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Affiliation(s)
- Piet E J van Erp
- Department of Dermatology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Malou Peppelman
- Department of Dermatology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Denise Falcone
- Department of Dermatology, Radboud University Medical Center, Nijmegen, The Netherlands
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Park J, Lee H, Lim GS, Kim N, Kim D, Kim YC. Enhanced Transdermal Drug Delivery by Sonophoresis and Simultaneous Application of Sonophoresis and Iontophoresis. AAPS PharmSciTech 2019; 20:96. [PMID: 30694397 DOI: 10.1208/s12249-019-1309-z] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Accepted: 01/10/2019] [Indexed: 12/24/2022] Open
Abstract
Transdermal drug delivery has advantages of topical drug administration compared to the other conventional administration methods. However, the skin penetration of drugs is limited by the barrier properties of stratum corneum. The combinational strategy has been investigated to improve the skin permeability of the drug. For this study, we devised an improved device that can perform not only the single application of sonophoresis or iontophoresis but also the simultaneous application. The enhancement effect of sonophoresis was evaluated for various cosmeceutical drugs using a Franz diffusion cell. The enhancement ratio of niacinamide and retinol with sonophoresis was increased to 402% and 292%, respectively. The relationship was found between the enhancement effect of sonophoresis and the physicochemical properties of drugs. In particular, the simultaneous treatment of sonophoresis and iontophoresis enhanced skin penetration of glutamic acid to 240% using the fabricated device. The simultaneous application showed significantly higher enhancement ratio than application of sonophoresis or iontophoresis alone. Moreover, the improved device achieved skin penetration enhancement of various cosmeceutical drugs with lower intensity and a short application time. This combined strategy of transdermal physical enhancement methods is advantageous in terms of decline in energy density, thereby reducing the skin irritation. The miniaturized device with sonophoresis and iontophoresis is a promising approach due to enhanced transdermal drug delivery and feasibility of self-administration in cosmetic and therapeutic fields.
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8
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Rearranging the Nernst equation to make a dosage-controllable membrane delivery system. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2017.08.036] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Falcone D, Uzunbajakava N, Richters R, van de Kerkhof PC, van Erp PE. Histamine Iontophoresis as in vivo Model to Study Human Skin Inflammation with Minimal Barrier Impairment: Pilot Study Results of Application of the Model to a Sensitive Skin Panel. Skin Pharmacol Physiol 2017; 30:246-259. [DOI: 10.1159/000477416] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 05/09/2017] [Indexed: 11/19/2022]
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10
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Giri TK, Chakrabarty S, Ghosh B. Transdermal reverse iontophoresis: A novel technique for therapeutic drug monitoring. J Control Release 2016; 246:30-38. [PMID: 27956143 DOI: 10.1016/j.jconrel.2016.12.007] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 12/07/2016] [Indexed: 11/27/2022]
Abstract
Application of transdermal reverse iontophoresis for diagnostic purpose is a relatively new concept but its short span of research is full of ups and downs. In early nineties, when the idea was floated, it received a dubious welcome by the scientific community. Yet to the disbelief of many, 2001 saw the launching of GlucoWatch® G2 Biographer, the first device that could measure the blood sugar level noninvasively. Unfortunately, the device failed to match the expectation and was withdrawn in 2007. However, the concept stayed on. Research on reverse iontophoresis has diversified in many fields. Numerous in vitro and in vivo experiments confirmed the prospect of reverse iontophoresis as a noninvasive tool in therapeutic drug monitoring and clinical chemistry. This review provides an overview about the recent developments in reverse iontophoresis in the field of therapeutic drug monitoring.
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Affiliation(s)
- Tapan Kumar Giri
- NSHM College of Pharmaceutical Technology, NSHM Knowledge Campus, Kolkata Group of Institutions, 124 BL Saha Road, Kolkata-700053, West Bengal, India
| | - Subhasis Chakrabarty
- NSHM College of Pharmaceutical Technology, NSHM Knowledge Campus, Kolkata Group of Institutions, 124 BL Saha Road, Kolkata-700053, West Bengal, India
| | - Bijaya Ghosh
- NSHM College of Pharmaceutical Technology, NSHM Knowledge Campus, Kolkata Group of Institutions, 124 BL Saha Road, Kolkata-700053, West Bengal, India.
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Corrie SR, Coffey JW, Islam J, Markey KA, Kendall MAF. Blood, sweat, and tears: developing clinically relevant protein biosensors for integrated body fluid analysis. Analyst 2016; 140:4350-64. [PMID: 25909342 DOI: 10.1039/c5an00464k] [Citation(s) in RCA: 123] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Biosensors are being developed to provide rapid, quantitative, diagnostic information to clinicians in order to help guide patient treatment, without the need for centralised laboratory assays. The success of glucose monitoring is a key example of where technology innovation has met a clinical need at multiple levels – from the pathology laboratory all the way to the patient's home. However, few other biosensor devices are currently in routine use. Here we review the challenges and opportunities regarding the integration of biosensor techniques into body fluid sampling approaches, with emphasis on the point-of-care setting.
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Affiliation(s)
- S R Corrie
- The University of Queensland, Australian Institute for Bioengineering and Nanotechnology, Delivery of Drugs and Genes Group (D2G2), St Lucia, Queensland 4072, Australia.
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12
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Formulation design for topical drug and nanoparticle treatment of skin disease. Ther Deliv 2015; 6:197-216. [PMID: 25690087 DOI: 10.4155/tde.14.106] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The skin has evolved to resist the penetration of foreign substances and particles. Topical therapeutic and cosmeceutical delivery is a growing field founded on selectively overcoming this barrier. Both the biology of the skin and the nature of the formulation/active ingredient must be aligned for efficient transcutaneous delivery. This review discusses the biological changes in the skin barrier that occur with common dermatological conditions. This context is the foundation for the discussion of formulation strategies to improve penetration profiles of common active ingredients in dermatology. Finally, we compare and contrast those approaches to recent advances described in the research literature with an eye toward the future of topical formulation design.
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Girenes G, Ulusu T. An in vitro evaluation of the efficacy of a novel iontophoresis fluoride tray on remineralization. J Clin Exp Dent 2015; 6:e327-34. [PMID: 25593651 PMCID: PMC4282896 DOI: 10.4317/jced.51376] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Accepted: 04/10/2014] [Indexed: 11/30/2022] Open
Abstract
Objectives: The aim of this study is to determine the effects on remineralization of a novel iontophoresis device called ‘Fluorinex’, conventional (acidulated phosphat fluoride) APF gel treatment, and conventional ionthophoresis device comparatively by laser fluorescence measurements.
Study Design: Artificial incipient carious lesions were created on immature, 60 intact premolar and molar teeth with no defects. The specimens were randomly allocated to four groups. In the first group 1.23% APF gel was applied to specimens by conventional method for 4 minutes and in the second group 2% (sodium fluoride) NaF solution applied by conventional iontophoresis device for 4 minutes. In Fluorinex group specimens were pretreated with (copper chloride) CuCl2 for 1 minute and then treated for 4 minutes with 1.23% APF gel in a Fluoritray. Control group was placed in distilled water for 4 minutes. After these applications all specimens were included to a pH cycling. DIAGNOdent pen measurement were obtained in three different time intervals; after incipient carious lesions, after fluoride treatments and after pH cycling. Specimens were studied by SEM(scanning electron microscopy) after artificial caries lesions and fluoride treatments.
Results: Alterations on DIAGNOdent pen measurements before and after treatment, the Fluorinex group was statistically different from conventional APF gel (p=0.011), conventional NaF iontophoresis (p<0.001) and control group (p<0.001). As the DIAGNOdent pen measurements before treatment and after pH cycling were compared, differences were statistically significant in Fluorinex and conventional APF gel groups (p<0.001).
Conclusions: The results of this in vitro study has shown that fluoride application by Fluorinex was superior to the conventional APF gel application and NaF iontophoresis on incipient carious lesions.
Key words:Fluoride, iontophoresis, remineralization.
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Affiliation(s)
- Gonca Girenes
- Department of Pediatric Dentistry, Faculty of Dentistry, Gazi University, Ankara, Turkey
| | - Tezer Ulusu
- Department of Pediatric Dentistry, Faculty of Dentistry, Gazi University, Ankara, Turkey
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Nair AB, Kumria R, Al-Dhubiab BE, Attimarad M, Harsha S. Noninvasive Sampling of Gabapentin by Reverse Iontophoresis. Pharm Res 2014; 32:1417-24. [DOI: 10.1007/s11095-014-1546-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Accepted: 10/06/2014] [Indexed: 01/06/2023]
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Transdermal delivery of proteins using a combination of iontophoresis and microporation. Ther Deliv 2014; 5:525-36. [DOI: 10.4155/tde.14.19] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Aim: This study aimed to investigate transdermal delivery of proteins using combination of microporation and iontophoresis (ITP). Materials & methods & results: Delivery of model protein, Alexa Fluor 555 bovine serum albumin conjugate (AF-BSA) using ITP alone, microneedle (MN) alone, and ITP plus MN combination was assessed using confocal microscopy. Compared to MN alone, combination of MN plus ITP significantly increased skin's penetration depth of AF-BSA (300 vs 110 μm) and achieved lateral distribution of the model protein. Average fluorescence intensity quantified around each microchannel was 23.7-fold (8.2-fold, in vivo) higher for combination treatment compared with MN alone, in vitro. After 1 h in vitro permeation study, the unlabeled BSA amount delivered across skin was found to be 0, 1.4, 0.63 and 14 μg by passive, MN alone, ITP alone and ITP plus MN combination delivery, respectively.
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Tan RBW, Sangkum P, Mitchell GC, Hellstrom WJG. Update on Medical Management of Peyronie’s Disease. Curr Urol Rep 2014; 15:415. [DOI: 10.1007/s11934-014-0415-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Indermun S, Choonara YE, Kumar P, Du Toit LC, Modi G, Luttge R, Pillay V. Patient-Controlled Analgesia: Therapeutic Interventions Using Transdermal Electro-Activated and Electro-Modulated Drug Delivery. J Pharm Sci 2014; 103:353-66. [DOI: 10.1002/jps.23829] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 11/28/2013] [Accepted: 12/03/2013] [Indexed: 01/14/2023]
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19
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Abstract
Transcutaneous immunization refers to the topical application of antigens onto the epidermis. Transcutaneous immunization targeting the Langerhans cells of the skin has received much attention due to its safe, needle-free, and noninvasive antigen delivery. The skin has important immunological functions with unique roles for antigen-presenting cells such as epidermal Langerhans cells and dermal dendritic cells. In recent years, novel vaccine delivery strategies have continually been developed; however, transcutaneous immunization has not yet been fully exploited due to the penetration barrier represented by the stratum corneum, which inhibits the transport of antigens and adjuvants. Herein we review recent achievements in transcutaneous immunization, focusing on the various strategies for the enhancement of antigen delivery and vaccination efficacy. [BMB Reports 2013; 46(1): 17-24]
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Affiliation(s)
- Mi-Young Lee
- Department of Medical Biotechnology, Soonchunhyang University, Asan, Korea.
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20
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Ebah LM, Read I, Sayce A, Morgan J, Chaloner C, Brenchley P, Mitra S. Reverse iontophoresis of urea in health and chronic kidney disease: a potential diagnostic and monitoring tool? Eur J Clin Invest 2012; 42:840-7. [PMID: 22409780 PMCID: PMC3437467 DOI: 10.1111/j.1365-2362.2012.02657.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Patients with chronic kidney disease (CKD) need regular monitoring, usually by blood urea and creatinine measurements, needing venepuncture, frequent attendances and a healthcare professional, with significant inconvenience. Noninvasive monitoring will potentially simplify and improve monitoring. We tested the potential of transdermal reverse iontophoresis of urea in patients with CKD and healthy controls. METHODS Using a MIC 2(®) Iontophoresis Controller, reverse iontophoresis was applied on the forearm of five healthy subjects (controls) and 18 patients with CKD for 3-5 h. Urea extracted at the cathode was measured and compared with plasma urea. RESULTS Reverse iontophoresis at 250 μA was entirely safe for the duration. Cathodal buffer urea linearly correlated with plasma urea after 2 h (r = 0·82, P < 0·0001), to 3·5 h current application (r = 0·89, P = 0·007). The linear equations y = 0·24x + 1 and y = 0·21x + 4·63 predicted plasma urea (y) from cathodal urea after 2 and 3 h, respectively. Cathodal urea concentration in controls was significantly lower than in patients with CKD after a minimum current application of 2 h (P < 0·0001), with the separation between the two groups becoming more apparent with longer application (P = 0·003). A cathodal urea cut-off of 30 μM gave a sensitivity of 83·3% and positive predictive value of 87% CKD. During haemodialysis, the fall in cathodal urea was able to track that of blood urea. CONCLUSION Reverse iontophoresis is safe, can potentially discriminate patients with CKD and healthy subjects and is able to track blood urea changes on dialysis. Further development of the technology for routine use can lead to an exciting opportunity for its use in diagnostics and monitoring.
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Affiliation(s)
- Leonard M Ebah
- Department of Renal Medicine and Renal Research, Manchester Royal Infirmary, Manchester, UK.
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Abstract
Post-transcriptional managing of RNA plays a key role in the intricate network of cellular pathways that regulate our genes. Numerous small RNA species have emerged as crucial regulators of RNA processing and translation. Among these, microRNAs (miRNAs) regulate protein synthesis through specific interactions with target RNAs and are believed to play a role in almost any cellular process and tissue. Skin is no exception, and miRNAs are intensively studied for their role in skin homoeostasis and as potential triggers of disease. For use in skin and many other tissues, therapeutic RNA managing by small RNA technologies is now widely explored. Despite the easy accessibility of skin, the natural barrier properties of skin have challenged genetic intervention studies, and unique tools for studying gene expression and the regulatory role of small RNAs, including miRNAs, in human skin are urgently needed. Human immunodeficiency virus (HIV)-derived lentiviral vectors (LVs) have been established as prominent carriers of foreign genetic cargo. In this review, we describe the use of HIV-derived LVs for efficient gene transfer to skin and establishment of long-term transgene expression in xenotransplanted skin. We outline the status of engineered LVs for delivery of small RNAs and their in vivo applicability for expression of genes and small RNA effectors including small hairpin RNAs, miRNAs and miRNA inhibitors. Current findings suggest that LVs may become key tools in experimental dermatology with particular significance for cutaneous RNA managing and in vivo genetic intervention.
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Reddy BY, Jow T, Hantash BM. Bioactive oligopeptides in dermatology: Part II. Exp Dermatol 2012; 21:569-75. [DOI: 10.1111/j.1600-0625.2012.01527.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/06/2012] [Indexed: 12/01/2022]
Affiliation(s)
- Bobby Y. Reddy
- Department of Dermatology; New Jersey Medical School; Newark; NJ; USA
| | - Tiffany Jow
- Department of Dermatology; New Jersey Medical School; Newark; NJ; USA
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Saliba SA, Teeter-Heyl CL, McKeon P, Ingeroll CD, Saliba EN. Effect of duration and amplitude of direct current when lidocaine is delivered by iontophoresis. Pharmaceutics 2011; 3:923-31. [PMID: 24309314 PMCID: PMC3857064 DOI: 10.3390/pharmaceutics3040923] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2011] [Revised: 11/25/2011] [Accepted: 12/05/2011] [Indexed: 11/25/2022] Open
Abstract
Dosage for the galvanic stimulation for iontophoresis varies. Clinicians manipulate the duration or the amplitude of the current, but it is not known which is more effective. We compared the anesthetic effect of lidocaine HCL (2%) by manipulating the current parameters on 21 healthy volunteers (age: 21.2 ± 4.2, height 170.7 ± 10.2 cm, mass 82.1 ± 19.2 kg). Three conditions were administered in a random order using a Phoresor II® with 2 mL, 2% lidocaine HCL in an iontophoresis electrode. (1) HASD (40 mA*min): High amplitude (4 mA), short duration (10 min); (2) LALD (40 mA.min): Low amplitude (2 mA), long duration (20 min); (3) Sham condition (0 mA, 20 min). Semmes-Weinstein monofilament (SWM) scores were taken pre and post intervention to measure sensation changes. Two-way ANOVA with repeated measures was used to compare sensation. Both iontophoresis treatments: LALD (4.2 ± 0.32 mm) and HASD (4.2 ± 0.52 mm) significantly increased SWM scores, indicating an increase in anesthesia, compared to the sham condition (3.6 ± 0.06 mm) p < 0.05. Neither LALD nor HASD was more effective and there was no difference in anesthesia with the sham. Lidocaine delivered via iontophoresis reduces cutaneous sensation. However, there was no benefit in either a HASD or LALD treatment.
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Affiliation(s)
- Susan A. Saliba
- University of Virginia, PO Box 400407, Charlottesville, VA 22904, USA
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +1-243-4033; Fax: +1-434-924-1389
| | - Courtney L. Teeter-Heyl
- Ortho Rehab & Specialty Centers, 3808 Rose Point Cove, PO Box 241574, Little Rock, AR 72223,USA; E-Mail:
| | - Patrick McKeon
- University of Kentucky, 900 South Limestone Street, Lexington, KY 40536, USA;E-Mail:
| | - Christopher D. Ingeroll
- Central Michigan University, 2217 Health Professions Building, Mt. Pleasant, MI 48859, USA;E-Mail:
| | - Ethan N. Saliba
- University of Virginia, PO Box 400834, Charlottesville, VA 22904, USA; E-Mail:
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