Abstract:
:There is a concern that peptides in cosmetic creams marketed as anti-aging/anti-wrinkle may penetrate into the deep layers of the skin and potentially stimulate biological activity. Claims for one cosmetic peptide, acetyl hexapeptide-8 (Ac-EEMQRR-amide), suggest interference with neuromuscular signaling as its anti-wrinkle mechanism of action. Therefore, the skin penetration of commercially available Ac-EEMQRR-amide from a cosmetic formulation (oil-in-water (O/W) emulsion) was determined in hairless guinea pig (HGP) and human cadaver skin assembled into in vitro diffusion cells. An O/W emulsion containing 10% Ac-EEMQRR-amide was applied to skin at a dose of 2 mg/cm(2). After a 24-h exposure, the skin surface was washed to remove unabsorbed peptide. Skin disks were tape stripped to determine the amount of peptide in the stratum corneum. Removal of the stratum corneum layers was verified by confocal microscopy. The epidermis was heat separated from the dermis and each skin fraction was homogenized. Skin penetration of Ac-EEMQRR-amide was measured in skin layers by hydrophilic interaction liquid chromatography with tandem mass spectrometry using electrospray ionization (ESI) in the positive mode. Stable isotopically labeled hexapeptides were used as internal standards for the quantitation of native hexapeptides to correct for matrix effects associated with ESI. The results (percent of applied dose) showed that the majority of the Ac-EEMQRR-amide was washed from the surface of both HGP and human skin. Ac-EEMQRR-amide that penetrated skin remained mostly in the stratum corneum of HGP (0.54%) and human (0.22%) with the peptide levels decreasing as each layer was removed by tape stripping. Total Ac-EEMQRR-amide found in the epidermis of HGP and human skin was similar at 0.01%. No peptide was detected in the dermis or buffer collected underneath the skin for both human and HGP. There was no hexapeptide metabolite (H2N-EEMQRR-amide) detected in any layers of HGP skin, human skin or buffer collected underneath the skin. This skin penetration data will be useful for evaluating the safety of cosmetic products containing small peptide cosmetic ingredients.
journal_name
Cutan Ocul Toxicoljournal_title
Cutaneous and ocular toxicologyauthors
Kraeling ME,Zhou W,Wang P,Ogunsola OAdoi
10.3109/15569527.2014.894521subject
Has Abstractpub_date
2015-03-01 00:00:00pages
46-52issue
1eissn
1556-9527issn
1556-9535journal_volume
34pub_type
杂志文章abstract::We report a 9-month-old male patient with autoimmune enteropathy treated with intravenous methylprednisolone who developed firm, red, subcutaneous nodules 20 days after abrupt steroid interruption. The diagnosis of poststeroid panniculitis (PSP) was made based on clinical and histological grounds. PSP is an unusual co...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.3109/15569527.2011.623290
更新日期:2012-06-01 00:00:00
abstract::The skin undergoes a lifetime of degenerative changes with the potential for genetic mutations occurring from exposure to solar radiation. Benign neoplasms afflict virtually every individual over the age of 65, and more often than not afflicted individuals carry large numbers of growths. Malignant neoplasms, which can...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.1080/15569520802143600
更新日期:2008-01-01 00:00:00
abstract::Erythema multiforme (EM) is an immune-mediated mucocutaneous eruption characterized by symmetrically distributed, polymorphic targetoid lesions, mostly on the distal parts of the extremities. It occurs mostly in the setting of an infection in certain predisposed individuals. A 30-year-old pregnant woman was presented ...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.3109/15569527.2012.751392
更新日期:2013-09-01 00:00:00
abstract::In the EU, Methylisothiazolinone (MI) was approved as a preservative in cosmetics and household products in 2005. Since then, several cases of MI contact allergy have been reported. We studied the prevalence of MI sensitization in patients allergic to Methylchloroisothiazolinone/Methylisothiazolinone (MCI/MI). From a ...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.3109/15569527.2012.707266
更新日期:2013-06-01 00:00:00
abstract::Basal cell carcinoma (BCC), the most frequent malignant skin tumor observed in Caucasian adults, especially males, occurs mainly in sun-exposed areas of the body. BCC in the periungual tissues, such as proximal nail fold, nail matrix, nail bed and hyponychium, is rarely reported. We report a patient with two synchrono...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.3109/15569527.2012.708956
更新日期:2013-06-01 00:00:00
abstract::In this report we present a case of erlotinib-induced trichomegaly in a male patient who received erlotinib for his pancreatic cancer. Trichomegaly as a side effect of epidermal growth factor receptor (EGFR) inhibitor therapy is uncommon in male patients. Also, it has not been reported previously in a patient with pan...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.3109/15569520903440058
更新日期:2010-03-01 00:00:00
abstract:PURPOSE:The aim of this study is to evaluate the effect of early amniotic membrane transplantation (AMT) in patients with topical proparacaine-related toxic keratopathy. MATERIALS AND METHODS:Between 2008 and 2011, eight eyes of seven patients with toxic keratopathy related to 0.5% proparacaine abuse underwent early A...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.3109/15569527.2012.759959
更新日期:2013-09-01 00:00:00
abstract::The purpose of the present study was to measure and compare permeability coefficients (k(p)) and lag times (tau) in human skin and hairless guinea pig (HGP) skin. Paired experiments employed heat-separated epidermal membranes from human and HGP sources mounted on static in vitro diffusion cells. Infinite-dose, saturat...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.1080/15569520902950474
更新日期:2009-01-01 00:00:00
abstract:PURPOSE:Delayed keratitis is the most dangerous ocular complication of sulfur mustard (SM) exposure. This study aimed to evaluate the role of tear and serum levels of interleukin-8 (IL-8) in SM exposed subjects. DESIGN AND METHODS:In this historical cohort study, the experimental group included 370 participants who ha...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.3109/15569527.2011.618940
更新日期:2012-06-01 00:00:00
abstract:PURPOSE:Welding workers' ophthalmic problems resulting from their professions are frequently observed in ophthalmic emergencies and can cause severe visual impairment. We aimed to investigate the use of topical anesthetic and non-medical alternatives of this population regarding ophthalmic problems in this study. MATE...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.3109/15569527.2013.796480
更新日期:2014-06-01 00:00:00
abstract::The authors provide a framework for working up and counseling a patient with suspected textile dermatitis, focusing on identifying which textile materials are most likely to be the cause of the eczematous lesions, the current clinical guidelines, the utility and appropriateness of patch testing, the limitations of the...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.3109/15569527.2014.883403
更新日期:2015-03-01 00:00:00
abstract:OBJECTIVE:To assess the incidence of seizures induced by cycloplegic ophthalmic drops. MATERIALS AND METHODS:A survey among members of the American Association for Pediatric Ophthalmology and Strabismus yielded five patients who received cycloplegic eye drops between 1998 and 2010 and who consequently developed a seiz...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.3109/15569527.2013.808654
更新日期:2014-06-01 00:00:00
abstract::A brief comment on efficacy and safety of propranolol in the treatment of parotid hemangioma is presented, with illustration of a typical case. ...
journal_title:Cutaneous and ocular toxicology
pub_type: 评论,信件
doi:10.3109/15569527.2011.584928
更新日期:2011-12-01 00:00:00
abstract:OBJECTIVE:This report, the second in a series of five, directly compares the efficacy of Reactive Skin Decontamination Lotion (RSDL), the M291 Skin Decontamination Kit (SDK), 0.5% bleach (sodium or calcium hypochlorite solution), 1% soapy water, and Skin Exposure Reduction Paste Against Chemical Warfare Agents (SERPACW...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.3109/15569527.2010.515281
更新日期:2011-03-01 00:00:00
abstract::The skin is a major exposure route for many potentially toxic chemicals. It is, therefore, important to be able to predict the permeability of compounds through skin under a variety of conditions. Available skin permeability databases are often limited in scope and not conducive to developing effective models. This sp...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.1080/15569520500278690
更新日期:2005-01-01 00:00:00
abstract:PURPOSE:To evaluate the effects of the topical application of nondiluted autologous serum on epithelial healing as an adjuvant therapy in rabbit corneal alkali wounds. METHODS:Central corneal alkali wounds were produced on the right eye of 16 rabbits, by a 60-second application of a 6-mm round filter paper soaked in 1...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.3109/15569521003709558
更新日期:2010-06-01 00:00:00
abstract:CONTEXT:Nicorandil is an antianginal drug used for 20 years in Japan and introduced in France in 1994. Since 1997, side effects such as mucocutaneous ulcerations have regularly been reported. OBJECTIVE:To describe the first case of a patient with a spontaneous corneal perforation associated with mucocutaneous ulcerati...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.3109/15569527.2013.812105
更新日期:2014-06-01 00:00:00
abstract:PURPOSE:The aim of this study was to examine the effects of long-term use of hydroxychloroquine (HQ) on the pachymetric, aberrometric, and densitometric values of the cornea and corneal endothelium in lupus patients. METHOD:Twenty-two eyes (study group) of 22 patients using HQ for treatment of lupus and 25 eyes (contr...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.1080/15569527.2020.1861003
更新日期:2020-12-23 00:00:00
abstract:BACKGROUND:Systemic isotretinoin (13-cis-retinoic acid) is effective in the treatment of acne vulgaris. The most common side effects are mucocutaneous ones. Hematuria seen secondary to isotretinoin treatment is thought to be due to mucosal dryness in the urinary system. This study aims to determine the frequency of hem...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.3109/15569527.2016.1155595
更新日期:2017-03-01 00:00:00
abstract:BACKGROUND:The present cross-sectional study has the purpose to investigate the impact of aromatase inhibitors (AIs) on retinal nerve fiber layer (RNFL) thickness, optic nerve and macular function in patients using AIs for breast cancer treatment. METHODS:Participants in our study were 41 hormone-receptor-positive ear...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.3109/15569527.2014.1003267
更新日期:2016-03-01 00:00:00
abstract:BACKGROUND:To evaluate the effect of tolterodine on pupil diameter and anterior chamber parameters, including volume, depth, and angle, with the Pentacam. METHODS:The 56 eyes of 28 patients who were diagnosed as having overactive bladder and planned to be treated with tolterodine were followed up prospectively in the ...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.3109/15569527.2010.523036
更新日期:2011-03-01 00:00:00
abstract::Attempts to improve formulation of topical products are a continuing process and the development of micro- and nanovesicular systems as well as polymeric microparticles has led to marketing of topical drugs and cosmetics using these technologies. Encapsulation of some well-known contact allergens in ethanolic liposome...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.3109/15569527.2010.540765
更新日期:2011-06-01 00:00:00
abstract:PURPOSE:The aim of this study was to determine the effects of single-dose intravitreal bevacizumab on the levels of vascular endothelial growth factor (VEGF) in serum and distant organs. METHODS:Adult New Zealand albino rabbits (n = 40) were divided into experimental and control groups. Experimental rabbits received a...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.3109/15569527.2013.855227
更新日期:2014-12-01 00:00:00
abstract:OBJECTIVE:The aim of this study is to compare the effect of prostaglandin analogues preserved with either 0.015% or 0.001% benzalkoium chloride (BAK); or 0.001% polyquad (PQ) on the ocular surface of rabbit eyes. METHODS:Forty white rabbits were randomized to receive four-times daily instillation of either 0.0015% taf...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.3109/15569527.2014.944650
更新日期:2015-01-01 00:00:00
abstract::Skin patch testing of menses and venous blood on the vulva (labia majora) and the upper arm was performed to assess the potential contribution of these biological fluids to vulvar irritation during menstruation. After 24 and 48 hours of occlusive exposure, the skin of the labia majora was relatively unaffected by thes...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.1080/15569520500371735
更新日期:2005-01-01 00:00:00
abstract:PURPOSE:Following methanol intoxication, optic nerve neuropathy may occur, which is currently treated by different therapeutic regimens. Erythropoietin (EPO) has recently been introduced as a good therapeutic option in methanol-induced optic neuropathy. The aim of the current study was to evaluate the efficacy of EPO i...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.1080/15569527.2017.1373121
更新日期:2018-06-01 00:00:00
abstract::Background: Papulopustular rash is the most common cutaneous adverse effect during targeted tumour therapy particularly with epidermal growth factor receptor inhibitors (EGFRIs). Objective: To evaluate the adverse skin reactions, mainly papulopustular rash, caused by targeted tumour therapy. Materials and methods: We ...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.1080/15569527.2019.1594874
更新日期:2019-09-01 00:00:00
abstract:PURPOSE:To investigate the corneal toxicity of Xalatan and three latanoprost generics using transepithelial electrical resistance (TER) and scanning electron microscopy (SEM). METHODS:Corneal TER changes after a 60-s exposure to Xalatan (latanoprost 0.005% preserved with 0.02% BAC), and latanoprost generics (Latanopro...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.3109/15569527.2015.1058272
更新日期:2016-01-01 00:00:00
abstract::Ciliary body is responsible for humour aqueous production in posterior chamber. Valproic acid (VPA) has been widely used for the treatment of epilepsy and other neuropsychiatric diseases such as bipolar disease and major depression. Oxcarbazepine (OXC) is a new anti-epileptic agent that has been used recently for chil...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.3109/15569527.2014.930748
更新日期:2015-01-01 00:00:00
abstract:BACKGROUND:In our study, we aimed to show the effects of smoking on choroidal thickness and ocular pulse amplitude. It is known that the anatomy and physiologic functions of the choroid is important in ocular diseases like glaucoma and age-related macular degeneration. Choroidal thickness is measured by the spectral do...
journal_title:Cutaneous and ocular toxicology
pub_type: 杂志文章
doi:10.3109/15569527.2014.950380
更新日期:2015-01-01 00:00:00