1
|
Hameed H, Faheem S, Khan MA, Hameed A, Ereej N, Ihsan H. Ethosomes: a potential nanovesicular carrier to enhancing the drug delivery against skin barriers. J Microencapsul 2024; 41:204-225. [PMID: 38456667 DOI: 10.1080/02652048.2024.2326085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 12/29/2023] [Accepted: 02/28/2024] [Indexed: 03/09/2024]
Abstract
Ethosomes, which are liposomes like structures, mainly composed primarily of ethanol, have attracted considerable attention due to their potential to enhance the drug permeation via skin. The article discusses the formulation and preparation methods of ethosomes, offering insights into the various factors that influence their size, shape, and stability. Moreover, it explores the techniques used to assess the physicochemical properties of ethosomes and their impact on drug delivery effectiveness. The article also elucidates the mechanism by which ethosomes enhance skin permeation, emphasising their ability to modify the lipid structure and fluidity of the stratum corneum. Additionally, the review investigates the applications of ethosomes in diverse drug delivery scenarios, including the delivery of small molecules, peptides, and phytoconstituents. It highlights the potential of ethosomes to improve drug bioavailability, extend drug release, and achieve targeted delivery to specific skin layers or underlying tissues.
Collapse
Affiliation(s)
- Huma Hameed
- Faculty of Pharmaceutical Sciences, University of Central Punjab, Lahore, Pakistan
| | - Saleha Faheem
- Faculty of Pharmaceutical Sciences, University of Central Punjab, Lahore, Pakistan
| | - Mahtab Ahmad Khan
- Faculty of Pharmaceutical Sciences, University of Central Punjab, Lahore, Pakistan
- Institute of Clinical and Experimental Pharmacology and Toxicology, University of Lubeck, Lubeck, Germany
| | - Anam Hameed
- Department of Human Nutrition and Dietetics, Faculty of Rehabilitation and Allied Health Sciences, Riphah International University, Lahore, Pakistan
| | - Nelofer Ereej
- Faculty of Pharmaceutical Sciences, University of Central Punjab, Lahore, Pakistan
| | - Hafsa Ihsan
- Faculty of Pharmaceutical Sciences, University of Central Punjab, Lahore, Pakistan
| |
Collapse
|
2
|
Lee SS, Kaushik A, Natsis N, Kusari A, Schairer D, Lindback S, Levenberg M, Mills JR, Peeples K, Smith R, Eichenfield LF. A multimodal initiative improves general pediatric provider management of atopic dermatitis in children: A prospective interventional study. J Am Acad Dermatol 2023; 89:1041-1044. [PMID: 37516950 DOI: 10.1016/j.jaad.2023.02.065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 12/15/2022] [Accepted: 02/07/2023] [Indexed: 07/31/2023]
Affiliation(s)
- Stephanie S Lee
- Department of Dermatology, San Diego School of Medicine, University of California, La Jolla, California; Rady Children's Hospital San Diego, San Diego, California
| | - Anshika Kaushik
- Department of Dermatology, Indiana University School of Medicine, Indianapolis, Indiana
| | - Nicola Natsis
- Department of Dermatology, San Diego School of Medicine, University of California, La Jolla, California; Rady Children's Hospital San Diego, San Diego, California
| | - Ayan Kusari
- Department of Dermatology, University of California, San Francisco, San Francisco, California
| | - David Schairer
- Department of Dermatology, San Diego School of Medicine, University of California, La Jolla, California; Rady Children's Hospital San Diego, San Diego, California
| | - Sarah Lindback
- Rady Children's Hospital San Diego, San Diego, California
| | | | | | | | | | - Lawrence F Eichenfield
- Department of Dermatology, San Diego School of Medicine, University of California, La Jolla, California; Rady Children's Hospital San Diego, San Diego, California; Department of Pediatrics, San Diego School of Medicine, University of California, La Jolla, California.
| |
Collapse
|
3
|
Labbate C, Woldu S, Murray K, Rose K, Sexton W, Tachibana I, Kaimakliotis H, Jacob J, Dickstein R, Linehan J, Nieder A, Bjurlin M, Humphreys M, Ghodoussipour S, Quek M, O'Donnell M, Eisner B, Feldman A, Lotan Y, Matin SF. Efficacy and Safety of Mitomycin Gel (UGN-101) as an Adjuvant Therapy After Complete Endoscopic Management of Upper Tract Urothelial Carcinoma. J Urol 2023; 209:872-881. [PMID: 36657029 DOI: 10.1097/ju.0000000000003185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 01/10/2023] [Indexed: 01/20/2023]
Abstract
PURPOSE We describe a novel application of the reverse thermal polymer gel of mitomycin C (UGN-101) as adjuvant therapy after complete endoscopic ablation of upper tract urothelial carcinoma. MATERIALS AND METHODS We retrospectively reviewed patients treated with UGN-101 from 15 high-volume centers. Adjuvant therapy was defined as treatment administered following visually complete endoscopic ablation. Response at primary endoscopic evaluation was defined as no visual tumor or negative biopsy. Ipsilateral disease-free and progression-free survival were estimated by the Kaplan-Meier method. Ureteral stenosis and other adverse events were abstracted from the medical records. Ureteral stenosis was defined as a condition requiring ureteral stent or nephrostomy, or that would typically warrant stent or nephrostomy. RESULTS Adjuvant UGN-101 after complete endoscopic ablation was used in 52 of 115 (45%) renal units in the oncologic analysis. At first endoscopic evaluation, 36/52 (69%) were without visible disease. At 6.8 months' median follow-up, the ipsilateral disease-free rate was 63%. Recurrence after adjuvant UGN-101 therapy was more likely in multifocal tumors compared to unifocal (HR 3.3, 95% CI 1.07-9.91). Compared with UGN-101 treatment for chemoablation of measurable disease, there were significantly fewer disease detections with adjuvant therapy (P < .001). Ureteral stenosis after UGN-101 was diagnosed in 10 patients (19%) undergoing adjuvant therapy compared to 17 (29%) undergoing chemoablative therapy (P = .28). CONCLUSIONS In patients being considered for UGN-101, maximal endoscopic ablation prior to UGN-101 treatment may result in fewer patients with disease at first endoscopy and possibly fewer adverse events than primary chemoablative therapy. Longer follow-up is needed to determine if UGN-101 after complete endoscopic ablation will lead to durable disease-free interval.
Collapse
Affiliation(s)
- Craig Labbate
- University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Solomon Woldu
- University of Texas Southwestern Medical Center, Dallas, Texas
| | - Katie Murray
- Department of Surgery, University of Missouri, Columbus, Missouri
| | - Kyle Rose
- Department of Urology, Moffitt Cancer Center, Tampa, Florida
| | - Wade Sexton
- Department of Urology, Moffitt Cancer Center, Tampa, Florida
| | - Isamu Tachibana
- Department of Urology, Indiana University Medical Center, Indianapolis, Indiana
| | | | - Joseph Jacob
- State University of New York Upstate Medical Center, Syracuse, New York
| | - Rian Dickstein
- University of Maryland Medical Center, Baltimore, Maryland
- Chesapeake Urology, Baltimore, Maryland
| | | | - Alan Nieder
- Mount Sinai Medical Center, Miami Beach, Florida
| | - Marc Bjurlin
- University of North Carolina Medical Center, Chapel Hill, North Carolina
| | | | | | - Marcus Quek
- Loyola University Medical Center, Maywood, Illinois
| | | | - Brian Eisner
- Massachusetts General Hospital, Boston, Massachusetts
| | - Adam Feldman
- Massachusetts General Hospital, Boston, Massachusetts
| | - Yair Lotan
- University of Texas Southwestern Medical Center, Dallas, Texas
| | - Surena F Matin
- University of Texas MD Anderson Cancer Center, Houston, Texas
| |
Collapse
|
4
|
Chaiwat A, Chunhacheevachaloke E, Kidkhunthod P, Pakawanit P, Ajcharanukul O. Enamel Remineralization and Crystallization after Fluoride Iontophoresis. J Dent Res 2023; 102:402-411. [PMID: 36546596 DOI: 10.1177/00220345221138513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Early caries lesions consist of noncavitated subsurface demineralization caused by the dissolution of hydroxyapatite from the surface to the subsurface area of the enamel. Such lesions cannot be remineralized effectively by the conventional treatment. Thus, there is a need for a noninvasive technique capable of delivering the remineralizing agent to subsurface sites. For this purpose, fluoride iontophoresis (IP) using weak currents has been investigated with some conflicting results and no information on the crystal structure and composition. Because enamel remineralization involves the role of fluid from dentin, the presence of enamel fluid is necessary to determine the repair associated with the physiological condition. This study aimed to investigate structural and compositional characteristics, including the remineralizing effect of 5% sodium fluoride (NaF) IP with different polarities, cathodal iontophoresis (CIP), and anodal iontophoresis (AIP) for the treatment of natural enamel caries under simulated pulpal pressure. A bulk measurement of the crystal structure inside the lesion was first determined using calcium (Ca) K-edge X-ray absorption spectroscopy. IP with both polarities significantly promoted subsurface remineralization. The CIP generated a significant increase in the Ca/phosphorus ratio, and fluoride at the surface lesion significantly correlated with higher mineral density (MD) and more strengthening crystal structure of the lesion volume, while the lesion's MD and other impurities at the lesion surface, mostly the carbonate ions, affected the significant increase in MD with the unchanged structure of the lesion volume after AIP. The CIP of NaF is an ideal method for rapid enamel remineralization and recrystallization of fluoroapatite/fluorohydroxyapatite.
Collapse
Affiliation(s)
- A Chaiwat
- Department of Pediatric and Preventive Dentistry, Faculty of Dentistry, Srinakharinwirot University, Bangkok, Thailand
| | - E Chunhacheevachaloke
- Department of Pediatric and Preventive Dentistry, Faculty of Dentistry, Srinakharinwirot University, Bangkok, Thailand
| | - P Kidkhunthod
- Synchrotron Light Research Institute (Public Organization) Muang District, Nakhon Ratchasima, Thailand
| | - P Pakawanit
- Synchrotron Light Research Institute (Public Organization) Muang District, Nakhon Ratchasima, Thailand
| | - O Ajcharanukul
- Department of Stomatology, Faculty of Dentistry, Srinakharinwirot University, Bangkok, Thailand
| |
Collapse
|
5
|
Rahman N, Scott FH, Lvov Y, Stavitskaya A, Akhatova F, Konnova S, Fakhrullina G, Fakhrullin R. Clay Nanotube Immobilization on Animal Hair for Sustained Anti-Lice Protection. Pharmaceutics 2021; 13:1477. [PMID: 34575552 DOI: 10.3390/pharmaceutics13091477] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 09/04/2021] [Accepted: 09/09/2021] [Indexed: 01/20/2023] Open
Abstract
Topical administration of drugs is required for the treatment of parasitic diseases and insect infestations; therefore, fabrication of nanoscale drug carriers for effective insecticide topical delivery is needed. Here we report the enhanced immobilization of halloysite tubule nanoclay onto semiaquatic capybaras which have hydrophobic hair surfaces as compared to their close relatives, land-dwelling guinea pigs, and other agricultural livestock. The hair surface of mammals varies in hydrophobicity having a cortex surrounded by cuticles. Spontaneous 1-2 µm thick halloysite hair coverages on the semi-aquatic rodent capybara, non-aquatic rodent guinea pig, and farm goats were compared. The best coating was found for capybara due to the elevated 5 wt% wax content. As a result, we suggest hair pretreatment with diluted wax for enhanced nanoclay adsorption. The formation of a stable goat hair coverage with a 2-3 µm halloysite layer loaded with permethrin insecticide allowed for long-lasting anti-parasitic protection, enduring multiple rain wettings and washings. We expect that our technology will find applications in animal parasitosis protection and may be extended to prolonged human anti-lice treatment.
Collapse
|
6
|
Liu Y, Cheng M, Zhao J, Zhang X, Huang Z, Zang Y, Ding Y, Zhang J, Ding Z. Transdermal Delivery of Lidocaine-Loaded Elastic Nano-Liposomes with Microneedle Array Pretreatment. Biomedicines 2021; 9:592. [PMID: 34071133 DOI: 10.3390/biomedicines9060592] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/16/2021] [Accepted: 05/18/2021] [Indexed: 12/20/2022] Open
Abstract
This study aimed to improve the transdermal delivery of lidocaine hydrochloride (LidH) using elastic nano-liposomes (ENLs) and microneedle (MN) array pretreatment. LidH-containing ENLs were prepared using soybean phosphatidylcholine and cholesterol, with Span 80 or Tween 80, using a reverse-phase evaporation method. The ENL particle size, stability, and encapsulation efficiency (EE) were characterized and optimized based on the component ratio, pH, and type of surfactant used. In vitro transdermal diffusion study was performed on MN-pretreated mouse skin using Franz diffusion cells. The anesthetic effects of LidH in various formulations after dermal application were evaluated in vivo in rats by measuring the tail withdrawal latency after photothermic stimulation. Stable LidH-loaded Tween 80 or Span 80 ENLs were obtained with particle sizes of 115.8 and 146.6 nm and EEs of 27% and 20%, respectively. The formulations did not exert any cytotoxicity in HaCaT cells. Tween 80 and Span 80 ENL formulations showed enhanced LidH delivery on pretreated mice skin in vitro and prolonged the anesthetic effect in vivo compared to that by LidH application alone. LidH-loaded ENLs applied to MN-pretreated skin can shorten the onset time and prolong the anesthetic effect safely, which merits their further optimization and practical application.
Collapse
|
7
|
Dámaso Fernández-Ginés F, Cortiñas-Sáenz M, Mateo-Carrasco H, de Aranda ANG, Navarro-Muñoz E, Rodríguez-Carmona R, Fernández-Sánchez C, Sierra-García F, Morales-Molina JA. Efficacy and safety of topical sevoflurane in the treatment of chronic skin ulcers. Am J Health Syst Pharm 2019; 74:e176-e182. [PMID: 28438822 DOI: 10.2146/ajhp151008] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
PURPOSE Results of efficacy and safety assessments of topical sevoflurane use in patients with long-term treatment-refractory vascular ulcers are reported. METHODS Patients were randomly assigned to receive sevoflurane instillations (1 mL per cm2 of ulcer area 1-4 times daily) plus standard wound care (ulcer cleaning, debridement, and dressing changes) or standard care only. Topical sevoflurane was initiated during hospitalization, with self- or nurse-administered instillations continued after discharge. Study participants were evaluated at least once weekly for 1 month and then every 2 weeks for up to 90 days. The primary efficacy measures were debridement-related and overall pain (assessed using a 10-point visual analog scale), daily opioid use, and ulcer size; secondary measures were patient and clinician impressions of improvement and ulcer-related admissions during treatment. The primary safety endpoint was intolerable sevoflurane-related adverse effects. RESULTS Compared with the group receiving standard care alone (n = 5), the sevoflurane group (n = 10) had significant (p = 0.001) reductions in mean ± S.D. scores for debridement-related pain on day 1 of treatment and at subsequent time points; the sevoflurane group also had significant reductions in overall pain, daily opioid use, and ulcer size. Outcomes in terms of patient- and clinician-rated improvement and emergency admissions also favored the sevoflurane group. Mild localized reddening in the area surrounding ulcers occurred in 4 sevoflurane-treated patients. CONCLUSION Direct application of sevoflurane onto vascular ulcers resulted in an intense and long-lasting analgesia and was associated with a progressive reduction of ulcer size.
Collapse
Affiliation(s)
| | - Manuel Cortiñas-Sáenz
- Anesthesiology and Pain Management Department, Torrecárdenas Hospital, Almería, Spain
| | | | | | | | | | | | | | | |
Collapse
|
8
|
de Matos SP, Teixeira HF, de Lima ÁAN, Veiga-Junior VF, Koester LS. Essential Oils and Isolated Terpenes in Nanosystems Designed for Topical Administration: A Review. Biomolecules 2019; 9:biom9040138. [PMID: 30959802 PMCID: PMC6523335 DOI: 10.3390/biom9040138] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 04/01/2019] [Accepted: 04/02/2019] [Indexed: 12/16/2022] Open
Abstract
Essential oils are natural products with a complex composition. Terpenes are the most common class of chemical compounds present in essential oils. Terpenes and the essential oils containing them are widely used and investigated by their pharmacological properties and permeation-enhancing ability. However, many terpenes and essential oils are sensitive to environmental conditions, undergoing volatilization and chemical degradation. In order to overcome the chemical instability of some isolated terpenes and essential oils, the encapsulation of these compounds in nanostructured systems (polymeric, lipidic, or molecular complexes) has been employed. In addition, nanoencapsulation can be of interest for pharmaceutical applications due to its capacity to improve the bioavailability and allow the controlled release of drugs. Topical drug administration is a convenient and non-invasive administration route for both local and systemic drug delivery. The present review focuses on describing the current status of research concerning nanostructured delivery systems containing isolated terpenes and/or essential oils designed for topical administration and on discussing the use of terpenes and essential oils either for their biological activities or as permeation enhancers in pharmaceutic formulations.
Collapse
Affiliation(s)
- Sheila P de Matos
- Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Av. Ipiranga, 2752, Porto Alegre 90610-000, Brazil.
| | - Helder F Teixeira
- Programa de Pós-Graduação em Ciências Farmacêuticas, Departamento de Farmácia, Universidade Federal do Rio Grande do Norte, Av. General Cordeiro de Farias, s/n, Petrópolis, Natal 59012-570, Brazil.
| | - Ádley A N de Lima
- Programa de Pós-Graduação em Ciências Farmacêuticas, Departamento de Farmácia, Universidade Federal do Rio Grande do Norte, Av. General Cordeiro de Farias, s/n, Petrópolis, Natal 59012-570, Brazil.
| | - Valdir F Veiga-Junior
- Departamento de Engenharia Química, Instituto Militar de Engenharia, Praça Gen. Tibúrcio, 80, Praia Vermelha, Urca, Rio de Janeiro 22290-270, Brazil.
| | - Letícia S Koester
- Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Av. Ipiranga, 2752, Porto Alegre 90610-000, Brazil.
| |
Collapse
|
9
|
Fernández-Ginés FD, Cortiñas-Sáenz M, Navajas-Gómez de Aranda A, Navas-Martinez MDC, Morales-Molina JA, Sierra-García F, Mateo-Carrasco H. Palliative analgesia with topical sevoflurane in cancer-related skin ulcers: a case report. Eur J Hosp Pharm 2018; 26:229-232. [PMID: 31338175 DOI: 10.1136/ejhpharm-2017-001421] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [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: 10/11/2017] [Accepted: 12/19/2017] [Indexed: 11/04/2022] Open
Abstract
A Caucasian 39-year-old male patient with a poorly-differentiated infiltrating epidermoid penile carcinoma with urethral invasion was diagnosed. The patient received concomitant adjuvant chemotherapy with radiotherapy in the palliative setting, which produced painful ulceration of tumour lesions at loco-regional level (Numerical Rate Scale, NRS=9). The patient consented for treatment with direct topical sevoflurane instillations, at initial doses of 1 mL/cm2 of ulcerated area, as per unit protocol. The local use of undiluted sevoflurane achieved a marked reduction of the pain score in both nociceptive and irruptive pains (average NRS=3 immediately post-application). This improvement was corroborated by a decline in total morphine needs, any adverse events associated with major opiates. PGI-I and CGI-I scales were used before and after treatment with topical sevoflurane to assess patient and clinician perceptions of improvement in the quality of life. The pharmacy of our hospital had the responsibility to elaborate pre-loaded syringes with sevoflurane so that the patient was instilled simply and comfortably.
Collapse
|
10
|
Abuzeid WM, Peterson AZ, Rathor A, Xu JC, Velasquez N, Rashan AR, Thamboo A, Nayak JV. Enhanced Irrigant Delivery to the Ethmoid Sinuses Directly Following Ethmoid Punch Sinusotomy. Ann Otol Rhinol Laryngol 2017; 126:804-812. [PMID: 29047295 DOI: 10.1177/0003489417737323] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVES Ethmoid punch sinusotomy (EPS) is a feasible treatment for ethmoid sinusitis in a subset of chronic rhinosinusitis (CRS) patients per a recent report. This adjunctive work investigates the technical characteristics of EPS and determines if EPS measurably alters the topical delivery of irrigant into the ethmoid sinuses in a cadaveric model. METHODS The sinonasal cavities of 10 human cadaver heads were irrigated with a solution containing methylene blue and radio-opaque contrast prior to and following EPS. Procedural characteristics and irrigant distribution were assessed by endoscopy and computed tomography. RESULTS Forty EPS procedures were performed through the ethmoid bulla and basal lamella. Compared to controls, EPS enhanced dye distribution into the anterior (90% vs 35%, P < .004) and posterior (90% vs 35%, P < .002) ethmoid sinuses, representing a 157% increase for each of these sites. Contrast was detected in a higher proportion of anterior (65% vs 5%, P < .001) and posterior (60% vs 0%, P < .001) ethmoid sinuses. Endoscopically guided catheter instillation of contrast through the EPS sites achieved radiotracer distribution throughout the ethmoid complex. CONCLUSIONS Ethmoid punch sinusotomy sites can be reliably created via micro-minimally invasive procedures. Ethmoid punch sinusotomy improves irrigant delivery to the ethmoid sinuses, providing mechanistic understanding for the clinical outcomes observed in CRS patients.
Collapse
Affiliation(s)
- Waleed M Abuzeid
- 1 Division of Rhinology, Department of Otorhinolaryngology-Head and Neck Surgery, Albert Einstein College of Medicine, Bronx, New York, USA
| | - Asa Z Peterson
- 2 Division of Rhinology, Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Aakanksha Rathor
- 2 Division of Rhinology, Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Jordan C Xu
- 2 Division of Rhinology, Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Nathalia Velasquez
- 2 Division of Rhinology, Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Ali R Rashan
- 2 Division of Rhinology, Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Andrew Thamboo
- 3 Department of Otolaryngology-Head and Neck Surgery, University of British Columbia, Vancouver, British Columbia, Canada
| | - Jayakar V Nayak
- 2 Division of Rhinology, Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Stanford, California, USA
| |
Collapse
|
11
|
Rapetto F, Bruno VD, Guida G, Marsico R, Chivasso P, Zebele C. Gentamicin-Impregnated Collagen Sponge: Effectiveness in Preventing Sternal Wound Infection in High-Risk Cardiac Surgery. Drug Target Insights 2016; 10:9-13. [PMID: 27279734 PMCID: PMC4886695 DOI: 10.4137/dti.s39077] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 02/05/2016] [Revised: 04/05/2016] [Accepted: 04/11/2016] [Indexed: 11/13/2022] Open
Abstract
Sternal wound infections represent one of the most frequent complications after cardiac surgery and are associated with high postoperative mortality. Several preventive methods have been introduced, and recently, gentamicin-impregnated collagen sponges (GICSs) have shown a promising effect in reducing the incidence of this type of complications. Gentamicin is an aminoglycoside antibiotic that has been widely used to treat infections caused by multiresistant bacteria; despite its effectiveness, its systemic use carries a risk of toxicity. GICSs appear to overcome this side effect, topically delivering high antibiotic concentrations to the wound and thus reducing the toxic-related events. Although several retrospective analyses and randomized controlled trials have studied the use of GICSs in cardiac surgery, conclusions regarding their efficacy in preventing sternal wound infection are inconsistent. We have reviewed the current literature focusing on high-risk patients.
Collapse
Affiliation(s)
- Filippo Rapetto
- Department of Cardiac Surgery, Bristol Heart Institute, Bristol, UK
| | - Vito D Bruno
- Department of Cardiac Surgery, Bristol Heart Institute, Bristol, UK
| | - Gustavo Guida
- Department of Cardiac Surgery, Bristol Heart Institute, Bristol, UK
| | - Roberto Marsico
- Department of Cardiac Surgery, Bristol Heart Institute, Bristol, UK
| | | | - Carlo Zebele
- Department of Cardiac Surgery, Citta' di Lecce Hospital, Lecce, Italy
| |
Collapse
|
12
|
Winter SF, Santaguida C, Wong J, Fehlings MG. Systemic and Topical Use of Tranexamic Acid in Spinal Surgery: A Systematic Review. Global Spine J 2016; 6:284-95. [PMID: 27099820 PMCID: PMC4836933 DOI: 10.1055/s-0035-1563609] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Accepted: 07/13/2015] [Indexed: 01/17/2023] Open
Abstract
Study Design Combination of narrative and systematic literature reviews. Objectives Massive perioperative blood loss in complex spinal surgery often requires blood transfusions and can negatively affect patient outcome. Systemic use of the antifibrinolytic agent tranexamic acid (TXA) has become widely used in the management of surgical bleeding. We review the clinical evidence for the use of intravenous TXA as a hemostatic agent in spinal surgery and discuss the emerging role for its complementary use as a topical agent to reduce perioperative blood loss from the surgical site. Through a systematic review of published and ongoing investigations on topical TXA for spinal surgery, we wish to make spine practitioners aware of this option and to suggest opportunities for further investigation in the field. Methods A narrative review of systemic TXA in spinal surgery and topical TXA in surgery was conducted. Furthermore, a systematic search (using PRISMA guidelines) of PubMed (MEDLINE), EMBASE, and Cochrane CENTRAL databases as well as World Health Organization International Clinical Trials Registry Platform, ClinicalTrials.gov (National Institutes of Health), and International Standard Randomized Controlled Trial Number registries was conducted to identify both published literature and ongoing clinical trials on topical TXA in spinal surgery. Results Of 1,631 preliminary search results, 2 published studies were included in the systematic review. Out of 285 ongoing clinical trials matching the search criteria, a total of 4 relevant studies were included and reviewed. Conclusion Intravenous TXA is established as an efficacious hemostatic agent in spinal surgery. Use of topical TXA in surgery suggests similar hemostatic efficacy and potentially improved safety as compared with intravenous TXA. For spinal surgery, the literature on topical TXA is sparse but promising, warranting further clinical investigation and consideration as a clinical option in cases with significant anticipated surgical site blood loss.
Collapse
Affiliation(s)
| | - Carlo Santaguida
- Division of Neurosurgery, University of Toronto, Toronto, Ontario, Canada
| | - Jean Wong
- Department of Anesthesia, Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada
| | - Michael G. Fehlings
- Division of Neurosurgery, University of Toronto, Toronto, Ontario, Canada,Krembil Neuroscience Centre, University Health Network, Toronto, Ontario, Canada,Address for correspondence Michael G. Fehlings, MD Suite 4W449, Toronto Western Hospital399 Bathurst Street, Toronto M5T 2S8, OntarioCanada
| |
Collapse
|
13
|
Abstract
OBJECTIVES The link between topical steroid use and central serous retinopathy (CSR) is poorly understood as there are a limited number of reported cases, with most cases typically occurring in patients using oral or inhaled steroids. CSR is a common retinal disease that can cause loss of vision as a result of accumulated subretinal fluid leading to localized serous retinal detachments. CSR is associated with systemic steroid use. The objective of this case series and the review was to further understand the relationship between localized topical steroid use and CSR. METHODS The medical charts of two patients who developed CSR after using topical steroids were reviewed. RESULTS These cases demonstrate that CSR is associated with consistent topical steroid use to even limited areas of the body. These cases are unique, as other published cases describe patients who used topical steroids either on multiple or larger areas of the body. CONCLUSION It is critical that dermatologists are aware of this association, and refer patients who develop ocular symptoms after using topical steroids to ophthalmology.
Collapse
Affiliation(s)
- Lauren Y Chan
- a School of Medicine, Queen's University , Kingston , ON , Canada
| | - Robert S Adam
- b Division of Ophthalmology, Department of Surgery , University of Toronto , Toronto , ON , Canada , and
| | - David N Adam
- c Division of Dermatology , Department of Medicine, St. Michael's Hospital, University of Toronto , Toronto , ON , Canada
| |
Collapse
|
14
|
Lee MY, Lee JH, Lee HS, Choi JJ, Jang J, Choi H, Oh SH, Jang JH. Continuous topical drug delivery using osmotic pump in animal cochlear implant model: Continuous steroid delivery is effective for hearing preservation. Acta Otolaryngol 2015; 135:791-8. [PMID: 25813859 DOI: 10.3109/00016489.2015.1030771] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [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] [Indexed: 12/13/2022]
Abstract
CONCLUSIONS Continuous topical drug delivery using an osmotic pump is an effective supplementary technique for hearing preservation after cochlear implantation, as demonstrated in a guinea pig model. OBJECTIVE To evaluate the effect of continuous topical steroid delivery via an osmotic pump in an animal cochlear implant model. METHODS Twenty-three guinea pigs were used for the study. The animals were divided into three groups: control group (n = 8), simple topical dexamethasone delivery group (sDEXA group, n = 7) and continuous topical dexamethasone delivery group (cDEXA, n = 8). The hearing thresholds of all animals were measured by pre-operative auditory brain stem responses (ABRs) at 2, 8, 16, 24, and 32 kHz. ABRs were re-evaluated after cochlear implantation, and the animals were sacrificed for hematoxylin and eosin staining. RESULTS The ABR threshold at 1 week post-operatively was significantly lower in the cDEXA group than in the control and sDEXA groups at most frequencies. Threshold shifts from baseline were statistically smaller in the cDEXA group than in the control and sDEXA groups at all frequencies. Histological analysis revealed decreased numbers of multi-nucleated giant cells and thinner histiocyte layers.
Collapse
Affiliation(s)
- Min Young Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital , Seoul , Korea
| | | | | | | | | | | | | | | |
Collapse
|
15
|
Roustit M, Blaise S, Cracowski JL. Trials and tribulations of skin iontophoresis in therapeutics. Br J Clin Pharmacol 2015; 77:63-71. [PMID: 23590287 DOI: 10.1111/bcp.12128] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [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: 01/21/2013] [Accepted: 04/02/2013] [Indexed: 12/20/2022] Open
Abstract
Iontophoresis is a method of non-invasive transdermal drug delivery based on the transfer of charged molecules using a low-intensity electric current. Both local and systemic administration are possible; however, the skin pharmacokinetics of iontophoretically delivered drugs is complex and difficult to anticipate. The unquestionable theoretical advantages of the technique make it attractive in several potential applications. After a brief review of the factors influencing iontophoresis, we detail the current applications of iontophoresis in therapeutics and the main potential applications under investigation, including systemic and topical drugs and focusing on the treatment of scleroderma-related ulcerations. Finally, we address the issue of safety, which could be a limitation to the routine clinical use of iontophoresis.
Collapse
Affiliation(s)
- Matthieu Roustit
- Inserm U1042, Université Joseph Fourier, Grenoble, France; Clinical Pharmacology Unit, Inserm CIC03, Grenoble, France
| | | | | |
Collapse
|
16
|
Craven ER, Liu CC, Batoosingh A, Schiffman RM, Whitcup SM. A randomized, controlled comparison of macroscopic conjunctival hyperemia in patients treated with bimatoprost 0.01% or vehicle who were previously controlled on latanoprost. Clin Ophthalmol 2010; 4:1433-40. [PMID: 21188155 PMCID: PMC3000769 DOI: 10.2147/opth.s14915] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [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] [Indexed: 11/23/2022] Open
Abstract
Purpose To evaluate conjunctival hyperemia associated with bimatoprost 0.01% treatment in patients who replace latanoprost 0.005% with bimatoprost 0.01%. Methods Randomized, double-masked, vehicle-controlled, multicenter study of patients with ocular hypertension or glaucoma whose intraocular pressure (IOP) was adequately controlled on latanoprost monotherapy. At baseline, patients discontinued latanoprost and were randomized to treatment with once-daily bimatoprost 0.01% (n = 151) or vehicle (n = 71). The primary endpoint was the peak change in macroscopic hyperemia (conjunctival hyperemia evaluated by gross visual inspection) from baseline to month 1. Results Bimatoprost 0.01% was noninferior to vehicle in the mean [standard deviation] peak change from baseline macroscopic hyperemia at month 1 (0.18 [0.46] in the bimatoprost 0.01% group vs 0.02 [0.32] in the vehicle group, P = 0.009). The between-group difference was 0.15 (95% confidence interval [CI]: 0.04, 0.26), which was within the predefined margin for noninferiority of 0.5 on a hyperemia grading scale of 0 to +3. There were no statistically significant between-group differences in the percentage of patients with a ≥1-grade increase in macroscopic hyperemia from baseline. Mean IOP was decreased from baseline (−0.7 to −1.3 mm Hg) in the bimatoprost 0.01% group (P ≤ 0.002) and was increased from baseline (+3.3 to +3.6 mm Hg) in the vehicle group (P < 0.001) at month 1. There were no statistically significant between-group differences in adverse events. Conclusions Bimatoprost 0.01% was noninferior to vehicle with respect to conjunctival hyperemia in this study population. Replacement of latanoprost with bimatoprost 0.01% in patients with ocular hypertension or glaucoma can result in additional IOP reduction without clinically important hyperemia.
Collapse
|