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  1. Related Articles Serum bilirubin and uric acid antioxidant levels in rosacea patients. J Cosmet Dermatol. 2020 Mar 31;: Authors: Turkmen D Abstract BACKGROUND: Rosacea is a common chronic inflammatory skin disease that the pathogenesis is not fully understood. Although the significant role of oxidative stress in rosacea pathophysiology has been shown in recent studies, there is no study addressing the potential roles of bilirubin and uric acid (UA) in rosacea. AIM: The purpose of this study was to assign serum bilirubin and UA antioxidant levels in rosacea patients. METHODS: Eighty-seven rosacea patients and 81 healthy controls (HCs) similar age and gender were included in the study. From all study participants, blood samples were taken and the values of total bilirubin (Tbil), direct bilirubin (Dbil), indirect bilirubin (Ibil), and UA were analyzed in the laboratory of biochemistry. RESULTS: The type of rosacea was erythematotelangiectatic in 51.7% of the patients, papulopustular in 43.7%, and phymatous in 4.6%. In rosacea group serum, Tbil, Dbil, Ibil, and UA values were found to be significantly lower than in the HCs. Male rosacea patients were found to have lower Tbil, Dbil, Ibil, and UA levels when compared with the males in the HCs. There was also the same significant difference in female patients. CONCLUSION: Main finding of our study was that when compared with the control group, serum bilirubin and UA levels were significantly lower in rosacea patients. These levels sustain the hypothesis that antioxidant status and oxidative stress are important in the pathogenesis of rosacea. PMID: 32233016 [PubMed - as supplied by publisher] {url} = URL to article Antioxidant System Defect Hypothesis
  2. Related Articles Epidemiological features of rosacea in Changsha, China: A population-based, cross-sectional study. J Dermatol. 2020 Mar 24;: Authors: Li J, Wang B, Deng Y, Shi W, Jian D, Liu F, Huang Y, Tang Y, Zhao Z, Huang X, Li J, Xie H Abstract Rosacea is a common chronic skin disorder of unknown etiology. While population prevalence rates range 0.2-22% in Europe and North America, prevalence in China is currently undetermined. We conducted a large population-based case-control study to determine the present epidemiological status of rosacea in China, involving 10 095 participants aged 0-100 years (mean age, 35.5 ± 19.1; 50.5% female). A census of rosacea among 15 communities in Changsha in south central China was conducted with skin examination by board-certified dermatologists. Rosacea was observed in 3.48% (95% confidence interval, 3.13-3.85%) of the study population. Subtype distribution was erythematotelangiectatic in 47.6%, papulopustular in 35.0% and phymatous in 17.4%. Family history was noted in 37.8% and ocular symptoms in 31.3%. Associations with rosacea were observed for melasma, hypertension, hyperthyroidism and breast cancer in females (P < 0.05), and also for hyperthyroidism and peptic ulcers in males (P < 0.05). Our results provide baseline information about epidemiological aspects of rosacea in China. PMID: 32207167 [PubMed - as supplied by publisher] {url} = URL to article
  3. Related Articles Rosacea is Characterized by a Profoundly Diminished Skin Barrier. J Invest Dermatol. 2020 Mar 18;: Authors: Medgyesi B, Dajnoki Z, Béke G, Gáspár K, Szabó IL, Janka EA, Póliska S, Hendrik Z, Méhes G, Törőcsik D, Bíró T, Kapitány A, Szegedi A Abstract Rosacea is a common, chronic inflammation of sebaceous gland-rich facial skin characterized by severe skin dryness, elevated pH, transepidermal water loss, and decreased hydration levels. Until now, there has been no thorough molecular analysis of permeability barrier alterations in the skin of rosacea patients. Thus, we aimed to investigate the barrier alterations in papulopustular rosacea (PPR) samples compared to healthy sebaceous gland-rich (SGR) skin, using RNASeq analysis (n=8). Pathway analyses by Cytoscape ClueGo revealed 15 significantly enriched pathways related to skin barrier formation. RT-PCR and immunohistochemistry were used to validate the pathway analyses. The results showed significant alterations in barrier components in PPR samples compared to SGR, including the cornified envelope and intercellular lipid lamellae formation, desmosome and tight junction organizations, barrier alarmins, and antimicrobial peptides. Moreover, the barrier damage in PPR was unexpectedly similar to atopic dermatitis (AD); this similarity was confirmed by immunofluorescent staining. In summary, besides the well-known dysregulation of immunological, vascular, and neurological functions, we demonstrated prominent permeability barrier alterations in PPR at the molecular level, which highlight the importance of barrier repair therapies for rosacea. PMID: 32199994 [PubMed - as supplied by publisher] {url} = URL to article
  4. Related Articles Value of reflectance confocal microscopy for the monitoring of rosacea during treatment with topical ivermectin. J Dermatolog Treat. 2020 Mar 19;:1-9 Authors: Logger JGM, Peppelman M, van Erp PEJ, de Jong EMGJ, Nguyen KP, Driessen RJB Abstract Background: Reflectance confocal microscopy (RCM) enables noninvasive Demodex mite detection in rosacea. Objective scoring of rosacea severity is currently lacking.Objectives: To determine the value of RCM for monitoring Demodex, inflammation and vascular parameters in rosacea during treatment.Methods: In 20 rosacea patients, clinical and RCM examination were performed before, during, and 12 weeks after a 16-week treatment course with topical ivermectin. Using RCM, number of mites and inflammatory cells, epidermal thickness, and vascular density and diameter were measured. RCM features were correlated with clinical assessment.Results: Treatment resulted in clinical reduction of inflammatory lesions. Mites were detected in 80% of patients at baseline, 30% at week 16, and 63% at week 28. The number of mites reduced significantly during treatment, but no changes in inflammatory cells, epidermal thickness or vascular parameters were observed. Correlation between number of inflammatory lesions and mites was low. None of the RCM variables were significant predictors for clinical success.Conclusions: RCM enables anti-inflammatory effect monitoring of topical ivermectin by determining mite presence. Quantifying exact mite number, and inflammatory and vascular characteristics is challenging due to device limitations. In its current form, RCM seems of limited value for noninvasive follow-up of rosacea in clinical practice. PMID: 32189533 [PubMed - as supplied by publisher] {url} = URL to article
  5. Related Articles Expanding treatment options for rosacea. Br J Dermatol. 2020 Mar 18;: Authors: Hampton PJ PMID: 32189331 [PubMed - as supplied by publisher] {url} = URL to article Full Text
  6. Related Articles Identification of Long Noncoding RNA Associated ceRNA Networks in Rosacea. Biomed Res Int. 2020;2020:9705950 Authors: Wang L, Lu R, Wang Y, Wang X, Hao D, Wen X, Li Y, Zeng M, Jiang X Abstract Rosacea is a chronic and relapsing inflammatory cutaneous disorder with highly variable prevalence worldwide that adversely affects the health of patients and their quality of life. However, the molecular characterization of each rosacea subtype is still unclear. Furthermore, little is known about the role of long noncoding RNAs (lncRNAs) in the pathogenesis or regulatory processes of this disorder. In the current study, we established lncRNA-mRNA coexpression networks for three rosacea subtypes (erythematotelangiectatic, papulopustular, and phymatous) and performed their functional enrichment analyses using Gene Onotology, KEGG, GSEA, and WGCNA. Compared to the control group, 13 differentially expressed lncRNAs and 525 differentially expressed mRNAs were identified in the three rosacea subtypes. The differentially expressed genes identified were enriched in four signaling pathways and the GO terms found were associated with leukocyte migration. In addition, we found nine differentially expressed lncRNAs in all three rosacea subtype-related networks, including NEAT1 and HOTAIR, which may play important roles in the pathology of rosacea. Our study provided novel insights into lncRNA-mRNA coexpression networks to discover the molecular mechanisms involved in rosacea development that can be used as future targets of rosacea diagnosis, prevention, and treatment. PMID: 32185228 [PubMed - in process] {url} = URL to article Full Article (if anyone can make heads or tails of this article it would be much appreciated if someone could translate this paper into layman's language) Please comment on this by clicking the green REPLY button. In the abstract paragraph above it mentions 'NEAT1 and HOTAIR, which may play important roles in the pathology of rosacea.' If you look at the diagram above at the top of the post you can find NEAT1 near the center of the diagram in red and HOTAIR just below NEAT1 to the right in blue. That probably helped you out a lot, didn't it? Just trying to helpful.
  7. Rosa canina image courtesy of Wikimedia Commons Related Articles Molecular mechanism of the anti-diabetic activity of an identified oligosaccharide from Rosa canina. Res Pharm Sci. 2020 Feb;15(1):36-47 Authors: Bahrami G, Miraghaee SS, Mohammadi B, Bahrami MT, Taheripak G, Keshavarzi S, Babaei A, Sajadimajd S, Hatami R Abstract Background and purpose: Because of the high prevalence, diabetes is considered a global health threat. Hence, the need for effective, cheap, and comfortable therapies are highly felt. In previous study, a novel oligosaccharide with strong anti-diabetic activity in the crude extract of Rosa canina fruits, from the rosacea family, was identified. The present study was designed to ensure its efficacy using in vivo and in vitro studies. Experimental approach: Crude extract and its purified oligosaccharide were prepared from corresponding herb. Adult male Wistar rats were randomly divided into four groups of 10 each, as follows: group 1, healthy control rats given only sterile normal saline; group 2, diabetic control rats received sterile normal saline; group 3, diabetic rats treated with crude extract of Rosa canina (40% w/v) by oral gavage for 8 weeks; group 4, diabetic rats treated with purified oligosaccharide of Rosa canina (2 mg/kg) by oral gavage for 8 weeks. After treatment, body weight, fasting blood glucose, serum insulin levels and islet beta-cell repair and proliferation were investigated. The possible cytoprotective action of oligosaccharide was evaluated in vitro. The effect of oligosaccharide on apoptosis and insulin secretion in cell culture media were examined. Real-time PCR was used to determine the expression level of some glucose metabolism-related regulator genes. Findings / Results: In the animal model of diabetes, the insulin levels were increased significantly due to the regeneration of beta-cells in the islands of langerhans by the purified oligosaccharide. In vitro cell apoptosis examination showed that high concentration of oligosaccharide increased cell death, while at low concentration protected cells from streptozotocin-induced apoptosis. Molecular study showed that the expression of Ins1 and Pdx1 insulin production genes were increased, leading to increased expression of insulin-dependent genes such as Gck and Ptp1b. On the other hand, the expression of the Slc2a2 gene, which is related to the glucose transporter 2, was significantly reduced due to insulin concentrations. Conclusion and implications: The purified oligosaccharide from Rosa canina was a reliable anti-diabetic agent, which acted by increasing insulin production in beta-cells of the islands of Langerhans. PMID: 32180815 [PubMed] {url} = URL to article
  8. image courtesy of Wikimedia Commons Related Articles Distinguishing rosacea from sensitive skin by reflectance confocal microscopy. Skin Res Technol. 2020 Mar 16;: Authors: Ma Y, Li L, Chen J, Chen T, Yuan C Abstract BACKGROUND: The updated standard classification and pathophysiology of rosacea have provided clear and meaningful evaluation parameters; however, differentiating rosacea from sensitive skin (SS) remained an obstacle for dermatologists around the world, especially in China. Herein, we aimed to find a better characteristic to distinguish rosacea from SS by using reflectance confocal microscopy (RCM). METHOD: Forty rosacea patients and 143 healthy subjects were recruited in this study. Firstly, a SS questionnaire and a lactic acid sting test were conducted among healthy subjects. Next, two major groups were divided out, including a SS group (40 subjects) and a normal skin control group (NS, 60 subjects). The cutaneous structures of face and fossa cubitalia were imaged by RCM. RESULTS: We found that more parakeratosis, honeycomb pattern, spongiform edema, and dermal papillae (P < .05) in rosacea patients than that of the NS group, whereas there were no significant differences, were found in rosacea patients and the SS group. Strikingly, we found that rosacea patients have a larger depth of honeycomb pattern than that of SS subjects (P < .05). But, the epidermal thickness of rosacea did not differ from that of SS groups. There was also no significant difference of epidermal thickness and honeycomb structure depth between rosacea patients and NS group. CONCLUSION: From the RCM images of parakeratosis, honeycomb pattern, spongiform edema, and dermal papillae, we found that RCM might be a faithful tool to distinguish rosacea from NS group. The depth of honeycomb structure of SS was more superficial than rosacea patients, whereas no significant difference between rosacea patients and NS group. RCM may provide a new method for evaluating the development of rosacea although it failed to distinguish rosacea and SS effectively. PMID: 32180258 [PubMed - as supplied by publisher] {url} = URL to article What is reflectance confocal microscopy?
  9. Related Articles Isotretinoin. Profiles Drug Subst Excip Relat Methodol. 2020;45:119-157 Authors: Khalil NY, Darwish IA, Al-Qahtani AA Abstract Isotretinoin is chemically named as: (2Z, 4E, 6E, 8E)-3,7-Dimethyl-9-(2,6,6-trimethylcyclohex-1-enyl)nona-2,4,6,8-tetraenoic acid. It is an orally active retinoic acid derivative for the treatment of severe refractory nodulocystic acne. It acts primarily by reducing sebaceous gland size and sebum production, and as a result alters skin surface lipid composition. Using isotretinoin for 1-2mg/kg/day for 3-4 months produces 60%-95% clearance of inflammatory lesions in patients with acne. Doses as low as 0.1mg/kg/day have also proven successful in the clearance of lesions. Encouraging results have also been seen in small numbers of patients with rosacea, Side effects affecting the mucocutaneous system and raised serum triglyceride levels occur in most patients receiving isotretinoin. Isotretinoin is strictly contraindicated in women of childbearing potential. This profile discusses and explains names of isotretinoin, its physical and chemical characteristics. It also includes methods of preparation, thermal and spectral behavior, methods of analysis, and pharmacology. PMID: 32164966 [PubMed - in process] {url} = URL to article
  10. Related Articles Fatty acid profile and in vitro biological properties of two Rosacea species (Pyrus glabra and Pyrus syriaca), grown as wild in Iran. Food Sci Nutr. 2020 Feb;8(2):841-848 Authors: Hazrati S, Govahi M, Mollaei S Abstract The high demands for the consumption of edible oils have caused scientists to struggle in assessing wild plants as a new source of seed oils. Therefore, in this study, the oil yield, fatty acid and tocopherol compositions, antioxidant and antibacterial activities of the oils obtained from Iran's two endemic plants (Pyrus glabra and Pyrus syriaca) were investigated. The obtained oil yields from the P. glabra and P. syriaca seeds were 33 ± 0.51 and 26 ± 0.28 w/w%, respectively. Oleic acid (C18:1) with the amount of 49.51 ± 1.05% was the major fatty acid in the P. glabra oil, while the main fatty acids in the P. syriaca seed oil belonged to linoleic acid (C18:2) and oleic acid (C18:1) with the amounts of 46.99 ± 0.37 and 41.43 ± 0.23%, respectively. The analysis of tocopherols was done by HPLC, and the results indicated that the P. glabra and P. syriaca seed oils were rich in α-tocopherol (69.80 ± 1.91 and 45.50 ± 1.86 mg/100 g oil, respectively), constituting 86.24 and 89.01% of total detected tocopherols, respectively. The study on the reducing capacity of the oils indicated that the P. glabra oil had more reducing capacity than the P. syriaca oil. Moreover, the antioxidant activity of the P. glabra seed oil (43.4 ± 0.7 µg/ml) was higher than the P. syriaca seed oil (46.3 ± 1.2 µg/ml). Also, the investigation of the antibacterial activities indicated that the P. glabra and P. syriaca oils have an inhibitory effect on the studied bacteria. The results indicate that the oils of these plants can be appropriate sources of plant oils which can act as natural antibacterial agents. PMID: 32148793 [PubMed] {url} = URL to article
  11. Related Articles [THE ROLE OF HELICOBACTER PYLORI IN ROSACEA AND PATHOGENETIC TREATMENT]. Georgian Med News. 2020 Jan;(298):109-112 Authors: Beridze L, Ebanoidze T, Katsitadze T, Korsantia N, Zosidze N, Grdzelidze N Abstract Rosacea is a chronic, recurrent skin disease. It may be aggravated by various factors. An increased incidence of rosacea has been reported in those who carry the stomach bacterium Helicobacter pylori. The purpose of this study was determination of the relationship of this infection with rosacea and to investigate effectiveness of eradication therapy of H. pylori. As our results showed, 80.9% of study patients were infected with H. pillory. There was correlation between infection rates and rosacea severity. In most cases the positive test results for H. Pylori was found in patients with moderate to severe form of disease. The results of the treatment of different forms of rosacea confirmed the effectiveness of the eradication therapy of H. Pylori, regarding as one of the pathogenic cause of rosacea and the way in the choice of treatment. More wide studies of pathophysiological aspects of causes of rosacea will be promising and help in treating rosacea. These data indicate the important role of H.Pylori in the development of rosacea and recommend taking into account in the therapy of this dermatosis. PMID: 32141861 [PubMed - as supplied by publisher] {url} = URL to article
  12. Related Articles Pulsed Dye Laser Alone Versus Its Combination With Topical Ivermectin 1% In Treatment of Rosacea: A Randomized Comparative Study. J Dermatolog Treat. 2020 Mar 06;:1-22 Authors: Osman MA, Shokeir HA, Hassan AM, Kahlifa MA Abstract Background While the aetiology of rosacea is multifactorial, it is not surprising that treatment has been controversial. Pulsed dye laser (PDL) has been successfully used to treat vascular components of rosacea. Ivermectin 1% cream is an emerging treatment of rosacea.Objective To provide a comprehensive clinical and dermatoscopic comparative study between the efficacy and safety of pulsed dye laser alone versus its combination with topical ivermectin 1% in the treatment of rosacea.Materials and methods Thirty Patients were randomly divided into two groups. Group A (n = 15) treated with 585 nm PDL, and group B (n = 15) treated with 585 nm PDL and topical ivermectin 1% cream. All patients received four laser treatments with a 4-week interval. The efficacy of treatment was assessed by photographs and dermoscopic photomicrographs at baseline and 3 months after the final treatment. The patient's level of satisfaction was also recorded.Results At the 3-month follow-up, group B induced better clinical improvement than group A. However, this difference was not significant. No serious adverse events were observed in either treatment group.Conclusion This study supports the efficacy of PDL treatment for patients with rosacea. PDL could be more effective when combined with ivermectin 1% cream. PMID: 32141785 [PubMed - as supplied by publisher] {url} = URL to article
  13. Related Articles Granulosis rubra nasi seen through the dermatoscope. JAAD Case Rep. 2020 Mar;6(3):234-236 Authors: Palit A, Sethy M, Nayak AK, Ayyanar P, Behera B PMID: 32140525 [PubMed] {url} = URL to article
  14. Related Articles Severe rosacea in a child. J Fr Ophtalmol. 2020 Mar 02;: Authors: Tijani M, Albaroudi N, Boutimzine N, Cherkaoui O PMID: 32139082 [PubMed - as supplied by publisher] {url} = URL to article
  15. Related Articles Skincare Habits and Rosacea in 3,439 Chinese Adolescents: A University-based Cross-sectional Study. Acta Derm Venereol. 2020 Mar 04;: Authors: Zuo Z, Wang B, Shen M, Xie H, Li J, Chen X, Zhang Y Abstract The pathogenesis of rosacea remains unclear but has been reported to correlate with skin barrier function. The objective of this study was to elucidate the skincare habits of Chinese adolescents and determine the relationship between skincare habits and rosacea. A university-based cross-sectional investigation included 310 rosacea cases and 3,129 healthy controls who underwent health examinations and completed a questionnaire about daily skincare habits. Fitzpatrick skin phototype IV is a protective factor against rosacea (adjusted adds ratio (aOR) 0.40; 95% confidence interval (CI) 0.22-0.72). Long bath duration (≥ 11 min, aOR 2.60; 95% CI 1.01-6.72) and frequent use of facial cleansers (≥ 2 times/day, aOR 1.70; 95% CI 1.17-2.36) were positively associated with rosacea, but bath frequency (p = 0.22), water temperature (p = 0.53), and sun protection (p = 0.65) were not associated with rosacea. Inappropriate skincare habits, including extended bath durations and frequent use of facial cleansers, significantly increase the risk of rosacea in Chinese adolescents. PMID: 32128599 [PubMed - as supplied by publisher] {url} = URL to article
  16. Related Articles Thumbnail-squeezing method: an effective method for assessing Demodex density in rosacea. J Eur Acad Dermatol Venereol. 2020 Mar 03;: Authors: Huang HP, Hsu CK, Yu-Yun Lee J Abstract D. folliculorum, and D. brevis are human ectoparasites living in hair follicles and sebaceous glands of the skin, respectively, and most commonly on the face. They are normal flora, but D. folliculorum can cause disease when it proliferates excessively or penetrates the dermis. Increased densities of Demodex have been reported in rosacea-by reflectance confocal microscopy (RCM), two consecutive SSSB (2-SSSB)7 and a superficial needle-scraping method. PMID: 32124497 [PubMed - as supplied by publisher] {url} = URL to article Demodex Density Count - What are the Numbers? Methods for Quantifying Demodex Mites
  17. Related Articles Demodex folliculorum infestations in common facial dermatoses: acne vulgaris, rosacea, seborrheic dermatitis. An Bras Dermatol. 2020 Feb 12;: Authors: Aktaş Karabay E, Aksu Çerman A Abstract BACKGROUND: Demodex mites are found on the skin of many healthy individuals. Demodex mites in high densities are considered to play a pathogenic role. OBJECTIVE: To investigate the association between Demodex infestation and the three most common facial dermatoses: acne vulgaris, rosacea and seborrheic dermatitis. METHODS: This prospective, observational case-control study included 127 patients (43 with acne vulgaris, 43 with rosacea and 41 with seborrheic dermatitis) and 77 healthy controls. The presence of demodicosis was evaluated by standardized skin surface biopsy in both the patient and control groups. RESULTS: In terms of gender and age, no significant difference was found between the patients and controls (p>0.05). Demodex infestation rates were significantly higher in patients than in controls (p=0.001). Demodex infestation rates were significantly higher in the rosacea group than acne vulgaris and seborrheic dermatitis groups and controls (p=0.001; p=0.024; p=0.001, respectively). Demodex infestation was found to be significantly higher in the acne vulgaris and seborrheic dermatitis groups than in controls (p=0.001 and p=0.001, respectively). No difference was observed between the acne vulgaris and seborrheic dermatitis groups in terms of demodicosis (p=0.294). STUDY LIMITATIONS: Small sample size is a limitation of the study. The lack of an objective scoring system in the diagnosis of Demodex infestation is another limitation. CONCLUSION: The findings of the present study emphasize that acne vulgaris, rosacea and seborrheic dermatitis are significantly associated with Demodex infestation. Standardized skin surface biopsy is a practical tool in the determination of Demodex infestation. PMID: 32113677 [PubMed - as supplied by publisher] {url} = URL to article
  18. Related Articles Conventional and Novel Treatment Modalities in Rosacea. Clin Cosmet Investig Dermatol. 2020;13:179-186 Authors: Engin B, Özkoca D, Kutlubay Z, Serdaroğlu S Abstract Rosacea is a common skin disease that is troublesome for both the patients and the dermatologists. Erythema, telengiectasia, papulopustular changes and phymatous changes are the main problems faced by the patients and dermatologists in everyday practice. Due to the chronic and relapsing nature of the disease, patients are usually unsatisfied with conventional treatment methods. This article aims at redefining rosacea according to the 2017 consensus and reviewing the different treatment modalities for different manifestations of the disease in depth. PMID: 32110082 [PubMed - as supplied by publisher] {url} = URL to article [abstract] Full Article
  19. Related Articles Non-infectious granulomatous dermatoses. J Dtsch Dermatol Ges. 2019 May;17(5):518-533 Authors: Schmitt A, Volz A Abstract Granulomatous dermatoses comprise a wide range of etiologically and clinically distinct skin diseases that share a common histology characterized by the accumulation of histiocytes include macrophages. While the pathogenesis of these disorders is not fully understood, the underlying mechanism is thought to involve a reaction pattern caused by an immunogenic stimulus. Antigen-presenting cells and the effect of various cytokines play a key role. Our understanding of granulomatous reaction patterns has been advanced by insights drawn from observations of such reactions in patients on immunomodulatory therapy and in individuals with genetic immunodeficiency. Traditionally, a distinction is made between infectious and non-infectious granulomatous dermatoses. The present CME article addresses granulomatous skin diseases for which there is no evidence of a causative infectious agent. Common representatives include granuloma annulare, necrobiosis lipoidica and cutaneous sarcoidosis. Granulomatous dermatoses may be part of the clinical spectrum of various systemic disorders or may be associated therewith. Some neoplastic disorders may mimic granulomatous dermatoses histologically. Given the pathogenetic diversity involved, the clinical presentation, too, is quite varied. Overall, however, each disorder is characterized by typical clinical features. The diagnosis always requires thorough clinicopathologic correlation. Treatment is preferably based on the underlying pathogenesis and frequently involves anti-inflammatory agents. In most cases, however, there is insufficient study data. The dermal nature of these disorders frequently poses a therapeutic challenge, especially with respect to topical treatment. PMID: 31115996 [PubMed - indexed for MEDLINE] {url} = URL to article
  20. Related Articles "Shedding Light" on How Ultraviolet Radiation Triggers Rosacea. J Invest Dermatol. 2020 Mar;140(3):521-523 Authors: McCoy WH Abstract Treating rosacea begins with avoiding its triggers. Though they vary among patients, UVR is regarded as a universal rosacea trigger. Until now, the mechanism underlying this pathology has resisted characterization. The work of Kulkarni and colleagues sheds light on how UVR causes rosacea inflammation. Their findings appear to apply to all rosacea subtypes and suggest new therapeutic strategies. PMID: 32087829 [PubMed - as supplied by publisher] {url} = URL to article
  21. The Top 100 Most Cited Articles in Rosacea: A Bibliometric Analysis. J Eur Acad Dermatol Venereol. 2020 Feb 20;: Authors: Wang Y, Zhang H, Fang R, Tang K, Sun Q Abstract BACKGROUND: Many articles in rosacea have been published. Bibliometric analysis is helpful to determine the most influential studies in a specific field. OBJECTIVE: To identify the top 100 most cited articles in rosacea using the bibliometric analysis method. METHODS: We searched in the Web of Science database on November 20th, 2019. Articles were listed in descending order by their total citations. The top 100 most cited articles in rosacea were identified and analyzed. RESULTS: The top 100 most cited articles were published between 1971 and 2015. The largest number of articles were published in a single interval in 2011-2015. The average annual citations were constantly ascending, and the total citations were positively correlated with annual citations. The 100 articles were classified into different research focuses: treatment (35%), pathogenesis (27%), clinical features and diagnosis (14%), pathophysiology (6%), associated diseases (4%), epidemiology (3%) and others (11%). 19 articles were randomized controlled trials (RCT), 14 focused on the association between rosacea and Demodex, and five focused on the association between rosacea and Helicobacter pylori. 25 publications focused on a specific subtype of rosacea, mainly papulopustular and ocular rosacea. The 100 articles were published in 32 journals. 79 different first corresponding authors were from 20 different countries, mostly in North America and Europe. Steinhoff. M from University of California published the most articles as the corresponding author. CONCLUSIONS: This study identified the top 100 most cited articles in rosacea and analyzed their bibliometric characteristics, which may pave the way for further research. PMID: 32078196 [PubMed - as supplied by publisher] {url} = URL to article
  22. Related Articles Effect of in-office samples on dermatologists' prescribing habits: a retrospective review. Cutis. 2020 Jan;105(1):E24-E28 Authors: DeNigris J, Malachowski SJ, Miladinović B, Nelson CG, Patel NS Abstract The relationship between physicians and pharmaceutical companies has caused the medical community to question the degree to which pharmaceutical interactions and incentives can influence physicians' prescribing habits. Our study aimed to analyze whether a change in institutional policy that restricted the availability of in-office samples for patients resulted in any measurable change in the prescribing habits of faculty physicians in the Department of Dermatology and Cutaneous Surgery at the University of South Florida (USF)(Tampa, Florida). Medical records were retrospectively reviewed for common dermatology diagnoses-acne vulgaris, atopic dermatitis, onychomycosis, psoriasis, and rosacea-before and after the pharmaceutical policy changes, and the prescribed medications were recorded. These medications were then categorized as brand name, generic, and over-the-counter (OTC). Statistical analysis using a mixed effects ordinal logistic regression model accounting for baseline patient characteristics was conducted to determine if a difference in prescribing habits occurred. PMID: 32074163 [PubMed - as supplied by publisher] {url} = URL to article
  23. Related Articles Ecological niche differences between two polyploid cytotypes of Saxifraga rosacea. Am J Bot. 2020 Feb 17;: Authors: Decanter L, Colling G, Elvinger N, Heiðmarsson S, Matthies D Abstract PREMISE: Different cytotypes of a species may differ in their morphology, phenology, physiology, and their tolerance of extreme environments. We studied the ecological niches of two subspecies of Saxifraga rosacea with different ploidy levels: the hexaploid Central European endemic subspecies sponhemica and the more widely distributed octoploid subspecies rosacea. METHODS: For both cytotypes, we recorded local environmental conditions and mean plant trait values in populations across their areas of distribution, analyzed their distributions by niche modeling, studied their performance at two transplant sites with contrasting conditions, and experimentally tested their cold resistance. RESULTS: Mean annual temperature was higher in hexaploid than in octoploid populations and experiments indicated that frost tolerance of the hexaploid is lower than that of the octoploid. Reproduction of octoploids from Central Europe was higher than that of hexaploids at a transplant site in subarctic Iceland, whereas the opposite was true in temperate Luxembourg, indicating adaptation of the octoploids to colder conditions. Temperature variables were also most important in niche models predicting the distribution of the two cytotypes. Genetic differences in survival among populations were larger for the octoploids than for the hexaploids in both field gardens, suggesting that greater genetic variability may contribute to the octoploid's larger distributional range. CONCLUSIONS: Our results support the hypotheses that different cytotypes may have different niches leading to spatial segregation, and that higher ploidy levels can result in a broader ecological niche and greater tolerance of more extreme conditions. PMID: 32067225 [PubMed - as supplied by publisher] {url} = URL to article
  24. Related Articles Multimorbidity and mortality risk in hospitalized adults with chronic inflammatory skin disease in the United States. Arch Dermatol Res. 2020 Feb 11;: Authors: Narla S, Silverberg JI Abstract Chronic inflammatory skin diseases (CISD) represent a significant burden of skin disease in the United States, and a growing number of studies demonstrate that CISD are associated with multiple comorbidities. However, few studies examined multimorbidity in adults with CISD. We sought to determine whether hospitalized US adults with chronic inflammatory skin disorders have increased multi-morbidity and mortality risk. Data from the 2002-2012 Nationwide Inpatient Sample were analyzed, including a representative 20% sample of US hospitalizations. Charlson comorbidity index (CCI) and mean estimated 10-year survival were calculated. Multivariable linear regression models were constructed with CCI score and mean estimated 10-year survival as the dependent variables and chronic inflammatory skin diagnosis, age and sex as the independent variables. CCI scores were significantly higher in bullous pemphigoid (P = 0.0005) and dermatomyositis (P < 0.0001), lower in hidradenitis suppurativa (P < 0.0001), pemphigus (P < 0.0001), rosacea (P < 0.0001), and not significantly different in atopic dermatitis, alopecia areata, and lichen planus compared to psoriasis. Conversely, the mean estimated 10-year survival was higher in pemphigus (P = 0.0451), lichen planus (P = 0.0352), rosacea (P < 0.0001), lower in bullous pemphigoid and dermatomyositis (P < 0.0001), and similar in atopic dermatitis, alopecia areata, and hidradenitis suppurativa compared to psoriasis. Each CISD had a distinct profile of comorbidities when compared to psoriasis. Hospitalized adults with multiple CISD have increased multimorbidity and decreased 10-year survival. Further studies are needed to develop multidisciplinary strategies aimed at preventing and treating multimorbidity, especially modifiable cardiovascular factors in adults with CISD. PMID: 32047999 [PubMed - as supplied by publisher] {url} = URL to article
  25. Related Articles The Theranostics Role of Mast Cells in the Pathophysiology of Rosacea. Front Med (Lausanne). 2019;6:324 Authors: Wang L, Wang YJ, Hao D, Wen X, Du D, He G, Jiang X Abstract Rosacea is a chronic inflammatory cutaneous disorder that adversely affects patient's health and quality of life due to the complex course and the need for repeated treatment. The exact molecular mechanisms of rosacea are unclear. Mast cells are innate immune cells that can be found in virtually all tissues. Recently, increasing evidence has indicated that mast cells have important effects on the pathogenesis of rosacea. In this review article, we describe recent advances of skin mast cells in the development of rosacea. These studies suggested that mast cells can be an important immune cell that connected innate immunity, nerves, and blood vessels in the development of rosacea. Moreover, we review the inhibition of mast cells for the potential treatment of rosacea. PMID: 32047752 [PubMed] {url} = URL to article
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