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https://www.readbyqxmd.com/read/27881494/a-new-uplc-method-with-chemometric-design-optimization-approach-for-the-simultaneous-quantitation-of-brimonidine-tartrate-and-timolol-maleate-in-an-eye-drop-preparation
#1
REVIEW
Eda Büker, Erdal Dinç
A new ultra-performance liquid chromatography (UPLC) with photodiode array was proposed for the quantitation of Brimonidine Tartrate (BRI) and Timolol Maleate (TIM) in eye drop using experimental design and optimization methodology. A 3(3) full factorial design was applied to uncover the effects of the selected factors and their interactions on the chromatographic response function for the optimization of experimental conditions in the development of a new UPLC method. As a result, the optimal chromatographic conditions giving a better separation and short analysis time were found to be 49...
November 23, 2016: Journal of Chromatographic Science
https://www.readbyqxmd.com/read/27869379/rosacea-management-update-on-general-measures-and-topical-treatment-options
#2
M Schaller, H Schöfer, B Homey, M Hofmann, U Gieler, P Lehmann, T A Luger, T Ruzicka, M Steinhoff
Although there is presently no cure for rosacea, there are several recommended treatment options available to control many of the symptoms and to prevent them from getting worse. In addition to self-help measures like avoidance of trigger factors and proper skin care, rosacea management should include topical medications as one of the first-line choices for patients with erythematous and mild to severe papulopustular rosacea. Since mixed forms of characteristic rosacea symptoms are more common, medical treatment must be symptom-tailored for each individual case and will often involve a combination therapy...
December 2016: Journal der Deutschen Dermatologischen Gesellschaft, Journal of the German Society of Dermatology: JDDG
https://www.readbyqxmd.com/read/27869373/rosazea-management-update-%C3%A3-ber-allgemeine-ma%C3%A3-nahmen-und-topische-therapieoptionen
#3
M Schaller, H Schöfer, B Homey, M Hofmann, U Gieler, P Lehmann, T A Luger, T Ruzicka, M Steinhoff
Obwohl bislang für die Rosazea keine kurative Therapie besteht, können verschiedene Optionen zur Behandlung der Symptome und zur Vorbeugung von Exazerbationen empfohlen werden. Neben Selbsthilfemaßnahme wie der Vermeidung von Triggerfaktoren und einer geeigneten Hautpflege sollte das Rosazea-Management bei Patienten mit erythematöser und leichter bis schwerer papulopustulöser Rosazea die Anwendung topischer Präparate als First-Line-Therapie umfassen. Da Überlappungen der charakteristischen Rosazea-Symptome im klinischen Alltag die Regel sind, sollte die medikamentöse Therapie auf die individuellen Symptome zugeschnitten werden; auch eine Kombinationstherapie kann erforderlich sein...
December 2016: Journal der Deutschen Dermatologischen Gesellschaft, Journal of the German Society of Dermatology: JDDG
https://www.readbyqxmd.com/read/27854122/the-relationship-of-brimonidine-concentration-in-vitreous-body-to-the-free-concentration-in-retina-choroid-following-topical-administration-in-pigmented-rabbits
#4
Keisuke Shinno, Kazuya Kurokawa, Seiko Kozai, Akio Kawamura, Katsuhiro Inada, Hideki Tokushige
PURPOSE: Several studies showed that repeated topical administration of brimonidine tartrate ophthalmic solution reached the human vitreous concentration above 2 nM, which is the concentration necessary to activate the α2-adrenergic receptor. The purpose of this study was to elucidate the relationship of the brimonidine concentration in the vitreous body to the free concentration in the retina/choroid which is the target site of brimonidine on neuroprotective effect after topical administration...
November 17, 2016: Current Eye Research
https://www.readbyqxmd.com/read/27843919/rosacea-management
#5
REVIEW
Manal Abokwidir, Steven R Feldman
BACKGROUND: Rosacea is a chronic inflammatory skin condition associated with four distinct subtypes: erythematotelangiectatic, papulopustular, phymatous, and ocular. PURPOSE: To review the different kinds of management for all subtypes. METHODS: We divided rosacea management into three main categories: patient education, skin care, and pharmacological/procedural interventions. RESULTS: Flushing is better prevented rather than treated, by avoiding specific triggers, decreasing transepidermal water loss by moisturizers, and blocking ultraviolet light...
September 2016: Skin Appendage Disorders
https://www.readbyqxmd.com/read/27692690/-allergic-contact-dermatitis-to-mirvaso-%C3%A2-brimonidine-tartrate
#6
J-L Schmutz
No abstract text is available yet for this article.
September 28, 2016: Annales de Dermatologie et de Vénéréologie
https://www.readbyqxmd.com/read/27678247/ocular-drug-delivery-through-phema-hydrogel-contact-lenses-co-loaded-with-lipophilic-vitamins
#7
Dasom Lee, Seungkwon Cho, Hwa Sung Park, Inchan Kwon
Ocular drug delivery through hydrogel contact lenses has great potential for the treatment of ocular diseases. Previous studies showed that the loading of lipophilic vitamin E to silicone-hydrogel contact lenses was beneficial in ocular drug delivery. We hypothesized that vitamin E loading to another type of popular hydrogel contact lenses, pHEMA-hydrogel contact lenses, improves ocular drug delivery by increasing the drug loading or the duration of drug release. Loading of vitamin E to pHEMA-hydrogel contact lenses significantly increased the loading of a hydrophilic drug surrogate (Alexa Fluor 488 dye) and two hydrophilic glaucoma drugs (timolol and brimonidine) to the lenses by 37...
September 28, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27672409/improving-treatment-of-erythematotelangiectatic-rosacea-with-laser-and-or-topical-therapy-through-enhanced-discrimination-of-its-clinical-features
#8
REVIEW
Giuseppe Micali, Peter Arne Gerber, Francesco Lacarrubba, Gregor Schäfer
Rosacea is a chronic inflammatory disease that can present with a variety of cutaneous symptoms. Erythematotelangiectatic rosacea is a subtype characterized by flushing (transient erythema), persistent central facial erythema (background erythema), and telangiectasias. The severity of individual symptoms differs in each patient, which can complicate the selection of an appropriate treatment strategy. Evaluation of these specific symptoms has been greatly improved by the routine use of diagnostic tools such as (video) dermatoscopy...
July 2016: Journal of Clinical and Aesthetic Dermatology
https://www.readbyqxmd.com/read/27623792/a-tailored-approach-to-the-treatment-of-a-patient-with-a-severe-dynamic-manifestation-of-rosacea-a-case-report
#9
Martin Schaller, Lena Gonser
Rosacea is a chronic inflammatory disease that can manifest as a spectrum of symptoms including erythema, inflammatory lesions, edema, and telangiectasia. Treatment decisions need to be adapted to reflect the nature and severity of the different symptoms present. In this report, we discuss the case of a female patient diagnosed with severe, inflamed papulopustular rosacea (PPR) presenting with a large number of inflammatory lesions and severe background erythema. This patient responded well to a treatment regimen consisting of a short course of antibiotics in combination with a corticosteroid, followed by monotherapy with isotretinoin to reduce the inflammation...
September 2016: Drugs in R&D
https://www.readbyqxmd.com/read/27616466/long-term-subconjunctival-delivery-of-brimonidine-tartrate-for-glaucoma-treatment-using-a-microspheres-carrier-system
#10
Y Shona Pek, Hong Wu, Siti Thaharah Mohamed, Jackie Y Ying
Core-shell polymer microspheres with poly(d,l-lactic-co-glycolic acid) core and poly(l-lactic acid) (PLLA) shell are developed for the long-term subconjunctival release of brimonidine tartrate (BT) in order to reduce intraocular pressure (IOP) in the treatment of glaucoma. The PLLA-rich shell acts as a diffusion barrier, enabling linear release of BT over an extended period of 40 d. The microspheres are encased in a porous non-degradable methacrylate-based carrier for ease of subconjunctival implantation in a glaucoma-induced rabbit model...
November 2016: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/27611432/neuroprotection-by-%C3%AE-2-adrenergic-receptor-stimulation-after-excitotoxic-retinal-injury-a-study-of-the-total-population-of-retinal-ganglion-cells-and-their-distribution-in-the-chicken-retina
#11
Caridad Galindo-Romero, Mohammad Harun-Or-Rashid, Manuel Jiménez-López, Manuel Vidal-Sanz, Marta Agudo-Barriuso, Finn Hallböök
We have studied the effect of α2-adrenergic receptor stimulation on the total excitotoxically injured chicken retinal ganglion cell population. N-methyl-D-aspartate (NMDA) was intraocularly injected at embryonic day 18 and Brn3a positive retinal ganglion cells (Brn3a+ RGCs) were counted in flat-mounted retinas using automated routines. The number and distribution of the Brn3a+ RGCs were analyzed in series of normal retinas from embryonic day 8 to post-hatch day 11 retinas and in retinas 7 or 14 days post NMDA lesion...
2016: PloS One
https://www.readbyqxmd.com/read/27562835/multidisciplinary-consideration-of-potential-pathophysiologic-mechanisms-of-paradoxical-erythema-with-topical-brimonidine-therapy
#12
REVIEW
James R Docherty, Martin Steinhoff, Dianne Lorton, Michael Detmar, Gregor Schäfer, Anna Holmes, Anna Di Nardo
: Rosacea is a chronic inflammatory disease with transient and non-transient redness as key characteristics. Brimonidine is a selective α2-adrenergic receptor (AR) agonist approved for persistent facial erythema of rosacea based on significant efficacy and good safety data. The majority of patients treated with brimonidine report a benefit; however, there have been sporadic reports of worsening erythema after the initial response. A group of dermatologists, receptor physiology, and neuroimmunology scientists met to explore potential mechanisms contributing to side effects as well as differences in efficacy...
November 2016: Advances in Therapy
https://www.readbyqxmd.com/read/27552833/effects-of-the-neuroprotective-drugs-somatostatin-and-brimonidine-on-retinal-cell-models-of-diabetic-retinopathy
#13
Elena Beltramo, Tatiana Lopatina, Aurora Mazzeo, Ana I Arroba, Angela M Valverde, Cristina Hernández, Rafael Simó, Massimo Porta
AIMS: Diabetic retinopathy is considered a microvascular disease, but recent evidence has underlined early involvement of the neuroretina with interactions between microvascular and neural alterations. Topical administration of somatostatin (SST), a neuroprotective molecule with antiangiogenic properties, prevents diabetes-induced retinal neurodegeneration in animals. The α2-adrenergic receptor agonist brimonidine (BRM) decreases vitreoretinal vascular endothelial growth factor and inhibits blood-retinal barrier breakdown in diabetic rats...
August 23, 2016: Acta Diabetologica
https://www.readbyqxmd.com/read/27537212/facial-dermatitis-and-rosacea
#14
Joseph F Fowler
Rosacea is a chronic skin disorder associated with flushing, erythema, dryness, burning and stinging, and inflammatory papules and pustules. New treatments available or in development target the inflammatory and erythematous components of the disease. These agents include the selective α2 receptor agonist brimonidine, the topical agents ivermectin cream 1% and azelaic acid foam 15%, and use of tetracyclinetype antibiotics, which affect the cathelicidin pathway. Semin Cutan Med Surg 35(supp6):S107-S109.
June 2016: Seminars in Cutaneous Medicine and Surgery
https://www.readbyqxmd.com/read/27479245/presumed-furosemide-associated-bilateral-angle-closure-glaucoma
#15
Oussama N Boundaoui, Todd E Woodruff
PURPOSE: To report a case of presumed furosemide-associated bilateral angle-closure glaucoma. METHODS: Retrospective case report with spectral domain anterior segment optical coherence tomography imaging. RESULTS: A 21-year-old African American woman in her 17th week of pregnancy presented with acute angle-closure glaucoma in both eyes after being started on furosemide in her first trimester for fluid overload. Intraocular pressures were elevated in the low 40s mm Hg bilateral (OU) and anterior chambers were shallow with narrow grade 1 angles on gonioscopy (Schaffer classification)...
August 2016: Journal of Glaucoma
https://www.readbyqxmd.com/read/27445072/comparison-of-dorzolamide-timolol-vs-brinzolamide-brimonidine-fixed-combination-therapy-in-the-management-of-primary-open-angle-glaucoma
#16
Vassileios Kozobolis, Georgios D Panos, Aristeidis Konstantinidis, Georgios Labiris
PURPOSE: To compare the efficiency of brinzolamide/brimonidine fixed combination vs the dorzolamide/timolol fixed combination. METHODS: Forty-four eyes of 44 patients were divided in 2 groups treated either with dorzolamide/timolol twice a day (group A) or with brinzolamide/brimonidine twice a day (group B). Complete ophthalmic examination including Goldmann applanation tonometry was performed before treatment administration and 1, 4, 8, and 12 weeks afterwards...
July 16, 2016: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/27416316/what-s-new-in-acne-and-rosacea
#17
Jonette Keri
Acne and rosacea are common conditions seen every day by dermatologists. This review will discuss the most recent therapeutic options for patients with these conditions. Specifically, for acne, there will be a discussion of the use of isotretinoin at higher cumulative doses as well as a new formulation of isotretinoin, isotretinoin-lidose. Adult women with acne represent a growing population of patients who present for treatment of acne; the use of hormonal therapies as well as topical dapsone gel will be reviewed for these patients...
June 2016: Seminars in Cutaneous Medicine and Surgery
https://www.readbyqxmd.com/read/27413504/neuroprotection-in-glaucoma
#18
REVIEW
Azadeh Doozandeh, Shahin Yazdani
Glaucoma is a degenerative optic neuropathy characterized by retinal ganglion cell (RGC) loss and visual field defects. It is known that in some glaucoma patients, death of RGCs continues despite intraocular pressure (IOP) reduction. Neuroprotection in the field of glaucoma is defined as any treatment, independent of IOP reduction, which prevents RGC death. Glutamate antagonists, ginkgo biloba extract, neurotrophic factors, antioxidants, calcium channel blockers, brimonidine, glaucoma medications with blood regulatory effect and nitric oxide synthase inhibitors are among compounds with possible neuroprotective activity in preclinical studies...
April 2016: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/27413503/update-on-normal-tension-glaucoma
#19
REVIEW
Jyotiranjan Mallick, Lily Devi, Pradeep K Malik, Jogamaya Mallick
Normal tension glaucoma (NTG) is labelled when typical glaucomatous disc changes, visual field defects and open anterior chamber angles are associated with intraocular pressure (IOP) constantly below 21 mmHg. Chronic low vascular perfusion, Raynaud's phenomenon, migraine, nocturnal systemic hypotension and over-treated systemic hypertension are the main causes of normal tension glaucoma. Goldmann applanation tonometry, gonioscopy, slit lamp biomicroscopy, optical coherence tomography and visual field analysis are the main tools of investigation for the diagnosis of NTG...
April 2016: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/27367743/ocular-hypotensive-effect-of-fixed-combination-brinzolamide-brimonidine-adjunctive-to-a-prostaglandin-analog-a-randomized-clinical-trial
#20
R D Fechtner, J S Myers, D A Hubatsch, D L Budenz, H B DuBiner
PurposeTo determine whether intraocular pressure (IOP) lowering with fixed-combination brinzolamide/brimonidine (BBFC) adjunctive to a prostaglandin analog (PGA) was superior to that of vehicle+PGA in patients with open-angle glaucoma or ocular hypertension who were inadequately controlled with PGA monotherapyMethodsThis 6-week, multicenter, randomized, double-masked, parallel-group trial was conducted at 30 clinical sites in the United States between October 2013 and May 2014. Eligible patients were adults with open-angle glaucoma or ocular hypertension and with mean IOP ≥21 and <32 mm Hg, whereas receiving an open-label PGA (latanoprost, bimatoprost, or travoprost)...
July 1, 2016: Eye
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