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Iontophoresis

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https://www.readbyqxmd.com/read/28814142/effect-of-terpenes-on-transdermal-iontophoretic-delivery-of-diclofenac-potassium-under-constant-voltage
#1
Arunkumar S, Shivakumar H N, S Narasimha Murthy
PURPOSE: The aim of the study was to enhance the transdermal delivery of diclofenac potassium (DP) from hydrogels by constant voltage iontophoresis (CVI). The other objective was to establish the safety and efficacy of CVI in rats. METHODS: Hydrogels of DP were developed using hydroxyethyl cellulose as matrix material and geraniol, l-menthol and thymol as iontophoretic efficiency enhancers (IEE). In vitro permeation of hydrogels under CVI (1.5V) was performed in Franz diffusion cells across porcine skin...
August 17, 2017: Pharmaceutical Development and Technology
https://www.readbyqxmd.com/read/28755994/non-invasive-strategies-for-targeting-the-posterior-segment-of-eye
#2
REVIEW
Asadullah Madni, Muhammad Abdur Rahem, Nayab Tahir, Muhammad Sarfraz, Abdul Jabar, Mubashar Rehman, Prince Muhammad Kashif, Syed Faisal Badshah, Kifayat Ullah Khan, Hélder A Santos
The safe and effective treatment of eye diseases has been remained a global myth. Several advancements have been done and various drug delivery and treatment techniques have been suggested. The Posterior segment disorders are the leading cause of visual impairments and blindness. Targeting the therapeutic agents to the anterior and posterior segments of the eye has attracted extensive attention from the scientific community. Significant key factors in the success of ocular therapy are the development of safe, effective, economic and non-invasive novel drug delivery systems...
July 26, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28755756/brain-extracellular-space-the-final-frontier-of%C3%A2-neuroscience
#3
REVIEW
Charles Nicholson, Sabina Hrabětová
Brain extracellular space is the narrow microenvironment that surrounds every cell of the central nervous system. It contains a solution that closely resembles cerebrospinal fluid with the addition of extracellular matrix molecules. The space provides a reservoir for ions essential to the electrical activity of neurons and forms an intercellular chemical communication channel. Attempts to reveal the size and structure of the extracellular space using electron microscopy have had limited success; however, a biophysical approach based on diffusion of selected probe molecules has proved useful...
July 26, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28754178/evaluation-of-microvascular-endothelial-function-in-patients-with-infective-endocarditis-using-laser-speckle-contrast-imaging-and-skin-video-capillaroscopy-research-proposal-of-a-case-control-prospective-study
#4
Amanda Barcelos, Cristiane Lamas, Eduardo Tibiriça
OBJECTIVE: Infective endocarditis is a severe condition with high in-hospital and 5-year mortality. There is increasing incidence of infective endocarditis, which may be related to healthcare and changes in prophylaxis recommendations regarding oral procedures. Few studies have evaluated the microcirculation in patients with infective endocarditis, and so far, none have utilized laser-based technology or evaluated functional capillary density. The aim of the study is to evaluate the changes in the systemic microvascular bed of patients with both acute and subacute endocarditis...
July 28, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28750962/conservative-management-of-temporomandibular-dysfunction-a-literature-review-with-implications-for-clinical-practice-guidelines-narrative-review-part-2
#5
REVIEW
Raymond Butts, James Dunning, Ron Pavkovich, Jersey Mettille, Firas Mourad
The effective management of temporomandibular dysfunction (TMD) requires a thorough understanding of the pathoanatomic factors that drive the underlying condition. After reviewing the etiology associated with TMD in Part 1 of this narrative review, the temporomandibular joint capsule, articular disc and muscles of mastication emerged as key players. (http://dx.doi.org/10.​1016/​j.​jbmt.​2017.​05.​017) Part 2 focuses on conservative treatment strategies best able to reduce the pain and disability associated with TMD...
July 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/28746926/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
#6
Denise Falcone, Natallia Uzunbajakava, Renée Richters, Peter C M van de Kerkhof, Piet E J van Erp
BACKGROUND/AIMS: Histamine iontophoresis is known to elicit itch and a wheal-and-flare reaction; however, its impact on the skin barrier and underlying compartments has not been thoroughly evaluated yet. The primary objective of this study was to characterize that using immunohistochemistry, biophysical measurements, and image analysis, and secondly, to explore whether skin reactions to this model differ in sensitive skin (SS). METHODS: Eighteen healthy subjects, n = 9 with SS and n = 9 with non-sensitive skin (NSS), were included based on a perception-based questionnaire...
July 27, 2017: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/28744308/recent-pathophysiological-aspects-of-peyronie-s-disease-role-of-free-radicals-rationale-and-therapeutic-implications-for-antioxidant-treatment-literature-review
#7
REVIEW
Gianni Paulis, Gennaro Romano, Luca Paulis, Davide Barletta
Peyronie's disease (PD) is a chronic inflammation of tunica albuginea of the corpora cavernosa that causes an inelastic plaque resulting in penis deformation. Although its etiology is not completely known, there is general consensus that PD is genetically transmitted and secondary to penile trauma. In recent years, numerous studies demonstrated the role played by oxidative stress in PD pathogenesis, and other studies have described successful use of antioxidants in PD treatment. Oxidative stress is an integral part of this disease, influencing its progression...
2017: Advances in Urology
https://www.readbyqxmd.com/read/28737616/the-role-of-therapeutic-modalities-in-surgical-and-nonsurgical-management-of-orthopaedic-injuries
#8
Catherine A Logan, Peter D Asnis, Matthew T Provencher
Rehabilitation professionals often use therapeutic modalities as a component of the surgical and nonsurgical management of orthopaedic injuries. Myriad therapeutic modalities, including cryotherapy, thermotherapy, ultrasonography, electrical stimulation, iontophoresis, and laser therapy, are available. Knowledge of the scientific basis of each modality and the principles of implementation for specific injuries enables musculoskeletal treatment providers to prescribe these modalities effectively. The selection of specific therapeutic modalities is based on their efficacy during a particular phase of rehabilitation...
August 2017: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/28731072/-evaluation-of-the-results-of-the-prevention-program-protect-your-voice-implemented-by-the-greater-poland-center-of-occupational-medicine-of-poznan
#9
Magdalena Jałowska, Grażyna Wośkowiak, Bożena Wiskirska-Woźnica
BACKGROUND: The aim of the study was to evaluate the rationale for training in voice emission and voice prophylaxis among teachers and to assess the effects of voice disorders rehabilitation in the selected group of teachers participating in the program "Protect your voice." MATERIAL AND METHODS: An anonymous survey was conducted among 463 teachers participating in the training part of the program. The effectivness of rehabilitation of teachers with occupational voice disorders was evaluated among 51 subjects (average age: 43 years) taking part in diagnostic and rehabilitation part of the program...
July 26, 2017: Medycyna Pracy
https://www.readbyqxmd.com/read/28731017/methotrexate-iontophoresis-versus-coal-tar-ointment-in-palmoplantar-psoriasis-a-pilot-study
#10
K Haseena, Sandhya George, Najeeba Riyaz, Sarita Sasidharanpillai, Paul V Puthussery
BACKGROUND: Palmoplantar psoriasis is often disabling and refractory to conventional therapy. Systemic drugs are indicated in its severe form, but side effects are a concern with their use. Methotrexate is one such systemic drug which is effective and cheap. To reduce systemic toxicity, methotrexate has been tried topically but results have been inconsistent due to poor drug penetration into the skin by passive diffusion. Iontophoresis may enhance its absorption and efficacy. AIM: To evaluate the efficacy and safety of topical methotrexate iontophoresis in comparison with coal tar ointment in the treatment of palmoplantar psoriasis...
July 20, 2017: Indian Journal of Dermatology, Venereology and Leprology
https://www.readbyqxmd.com/read/28700128/assessment-of-trans-scleral-iontophoresis-delivery-of-lutein-to-the-human-retina
#11
Marco Lombardo, Valentina Villari, Norberto Micali, Pierre Roy, Sara Homem Sousa, Giuseppe Lombardo
The efficacy of novel scleral iontophoresis device for in-situ delivery of lutein to the human retina was assessed by resonance Raman spectroscopy technique. Eight human donor eye globes were used for experiments, six of which underwent trans-scleral iontophoresis delivery of lutein and the others two were used as controls. The scleral iontophoresis applicator was filled with liposome-enriched 0.1% lutein solution and the generator's current was set at 2.5 mA and delivered for 4 minutes. A custom resonance Raman spectroscopy (RRS) set-up was used for detecting lutein in the inner sclera, choroid, retinal periphery and macula of treated samples and controls...
July 12, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/28689749/iontophoresis-assisted-accelerated-riboflavin-ultraviolet-a-scleral-cross-linking-a-potential-treatment-for-pathologic-myopia
#12
Shuo Rong, Chaoying Wang, Baoyan Han, Pengfei Feng, Weiwei Lan, Zhipeng Gao, Xiaona Li, Weiyi Chen
Scleral collagen cross-linking is one of the most promising treatments to control the pathologic process of myopia. However, the exact procedure and its impact on animal models of myopia are still to be explored. We modified the scleral riboflavin/ultraviolet A (UVA) cross-linking procedure with an iontophoresis-assisted drug delivery system and an accelerated UVA irradiation (10 mW/cm(2), 9 min) and applied this treatment to an animal model of myopia. Ninety-six New Zealand White rabbits developed relatively stable myopia by visual deprivation and then underwent the modified scleral cross-linking surgery...
September 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28671307/cutaneous-microvascular-perfusion-responses-to-insulin-iontophoresis-are-differentially-affected-by-insulin-resistance-after-spinal-cord-injury
#13
Michael F La Fountaine, Christopher M Cirnigliaro, Frank Azarello, Joshua C Hobson, Oriana Tascione, Kirsten N Swonger, Trevor Dyson-Hudson, William A Bauman
Endothelial-mediated mechanisms that regulate skin blood flow may play an integral role in optimizing skin perfusion in vascular beds with sympathetic nervous system vasomotor impairment, such as in spinal cord injury (SCI). Insulin is a vasoactive hormone and second messenger of nitric oxide that facilitates endothelial-mediated dilatation. The effects of insulin resistance (IR) on sublesional cutaneous perfusion responses to insulin provocation have yet to be described in persons with SCI. Persons with SCI and an able-bodied (AB) cohort were divided into subgroups based upon fasting plasma insulin (FPI) concentration cut-offs for IR (≥13...
July 3, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28647443/dermal-and-transdermal-delivery-of-pharmaceutically-relevant-macromolecules
#14
REVIEW
S Münch, J Wohlrab, R H H Neubert
The skin offers an attractive way for dermal and transdermal drug delivery that is why the drug still needs certain qualities to transcend the outermost layer of the skin, the stratum corneum. The requirements are: drugs with a maximum molecular weight of 1kDa, high lipophilicity and a certain polarity. This would restrict the use of a transdermal delivery of macromolecules, which would make the drug more effective in therapeutic administration. Various studies have shown that macromolecules without support do not penetrate the human skin...
June 21, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28641580/marked-regional-endothelial-dysfunction-in-mottled-skin-area-in-patients-with-severe-infections
#15
Simon Bourcier, Jérémie Joffre, Vincent Dubée, Gabriel Preda, Jean-Luc Baudel, Naïke Bigé, Guillaume Leblanc, Bernard I Levy, Bertrand Guidet, Eric Maury, Hafid Ait-Oufella
BACKGROUND: Mottling around the knee, reflecting a reduced skin blood flow, is predictive of mortality in patients with septic shock. However, the causative pathophysiology of mottling remains unknown. We hypothesized that the cutaneous hypoperfusion observed in the mottled area is related to regional endothelial dysfunction. METHODS: This was a prospective, observational study in a medical ICU in a tertiary teaching hospital. Consecutive adult patients with sepsis admitted to ICU were included...
June 23, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28639462/onychomycosis-in-the-21st-century-an-update-on-diagnosis-epidemiology-and-treatment
#16
Aditya K Gupta, Sarah G Versteeg, Neil H Shear
Onychomycosis accounts for 50% of all nail disease cases and is commonly caused by dermatophytes. Diabetes, human immunodeficiency virus, immunosuppression, obesity, smoking, and advancing age are predisposing factors of this fungal infection. Potassium hydroxide and culture are considered the current standard for diagnosing onychomycosis, revealing both fungal viability and species identification. Other diagnostic tests currently available include periodic acid-Schiff staining, polymerase chain reaction techniques, and fluorescent staining...
June 1, 2017: Journal of Cutaneous Medicine and Surgery
https://www.readbyqxmd.com/read/28633107/effects-of-chemical-and-physical-enhancement-techniques-on-transdermal-delivery-of-3-fluoroamphetamine-hydrochloride
#17
Ashana Puri, Kevin S Murnane, Bruce E Blough, Ajay K Banga
The present study investigated the passive transdermal delivery of 3-fluoroamphetamine hydrochloride (PAL-353) and evaluated the effects of chemical and physical enhancement techniques on its permeation through human skin. In vitro drug permeation studies through dermatomed human skin were performed using Franz diffusion cells. Passive permeation of PAL-353 from propylene glycol and phosphate buffered saline as vehicles was studied. Effect of oleic acid, maltose microneedles, ablative laser, and anodal iontophoresis on its transdermal permeation was investigated...
August 7, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28625890/acute-effects-of-coffee-on-skin-blood-flow-and-microvascular-function
#18
Erik Tesselaar, Dzeneta Nezirevic Dernroth, Simon Farnebo
OBJECTIVE: Studies on the acute effects of coffee on the microcirculation have shown contradicting results. This study aimed to investigate if intake of caffeine-containing coffee changes blood flow and microvascular reactivity in the skin. METHODS: We measured acute changes in cutaneous vascular conductance (CVC) in the forearm and the tip of the finger, the microvascular response to transdermal iontophoresis of acetylcholine (ACh) and sodium nitroprusside (SNP) and post-occlusive reactive hyperemia (PORH) in the skin, after intake of caffeinated or decaffeinated coffee...
June 15, 2017: Microvascular Research
https://www.readbyqxmd.com/read/28625748/comparison-of-liposomal-drug-formulations-for-transdermal-iontophoretic-drug-delivery
#19
K Malinovskaja-Gomez, S Espuelas, M J Garrido, J Hirvonen, T Laaksonen
This study was aimed to evaluate the in vitro transdermal direct/pulsed current iontophoretic delivery of an amphiphilic model compound from various lipid vesicle-encapsulated formulations compared to free-drug formulation. Conventional, pegylated, ultradeformable liposomes (transfersomes) and ethosomes loaded with a negatively charged drug diclofenac sodium (DS) were prepared and characterized. All the liposomes possessed an average size of ≈100-150nm and negative zeta potential. No changes in colloidal stability were detected after 8h incubation of any vesicle formulation under constant or pulsed iontophoretic current...
August 30, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28616421/cystic-fibrosis-prevalence-among-a-group-of-high-risk-children-in-the-main-referral-children-hospital-in-iran
#20
Mohammad Reza Modaresi, Jamal Faghinia, Mohsen Reisi, Majid Keivanfar, Shiva Navaie, Javad Seyyedi, Faride Baharzade
BACKGROUND: Knowledge about cystic fibrosis (CF) in Iran is very limited. The objective of this study was to determine the prevalence of CF among a group of high-risk children with suggestive clinical features in the main referral hospital in Iran. MATERIALS AND METHODS: This study children consisted of 505 patients who had presented with one or more of the following symptoms: chronic or recurrent respiratory symptoms, gastrointestinal symptoms as rectal prolapse, steatorrhea, hepatobiliary disease as prolonged jaundice, failure to thrive, hyperglycemia and glycosuria, hypochloremic metabolic alkalosis, hypoprothrombinemia, anemia or edema, and positive family history of CF...
2017: Journal of Education and Health Promotion
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