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AbdElneam AI, Al-Dhubaibi MS, Bahaj SS, Mohammed GF, Atef LM. Apo B-48 gene expression and low-density lipoprotein as a factor for increased insulin resistance and severity of acne. Gene 2023; 885:147703. [PMID: 37572798 DOI: 10.1016/j.gene.2023.147703] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 07/29/2023] [Accepted: 08/09/2023] [Indexed: 08/14/2023]
Abstract
BACKGROUND The contribution of insulin to acne is that it stimulates the synthesis of androgenic hormones, which are important in the development of excess sebum, hyperkeratinization, and sebaceous gland cell growth. OBJECTIVE To ascertain whether the lipid profile abnomalies seen in acne vulgaris are genetically induced, we also seek to establish a link between insulin resistance and lipid profiles. METHODS An analytical cross-sectional study with case-control design research investigation of 72 individuals with acne vulgaris and 72 healthy volunteers was carried out. Both groups' medical histories were taken, as were the severity and duration of the disease among acne sufferers, as well as demographic data. Anthropometry tests were performed on both groups, including their weights, height, and circumference of waist, as well as the profile of lipids, blood glucose levels after a fast, insulin levels during fasting, resistance to insulin, and Apo B-48 folding change. RESULTS Severe acne vulgaris patients showed significantly increased TG, TC, LDL-C, blood glucose levels after a fast, fasting insulin, and resistance to insulin levels. P = 0.005 showed that Apo B-48 expression increased in patients compared to healthy people. Apo B-48 folding change and insulin resistance were found to have a substantial positive simple linear association. Acne vulgaris, whether mild, moderate, or severe, has a significant positive linear connection with insulin resistance. CONCLUSION Acne patients had an abnormal in lipid profile. Acne individuals with severe form are more inclined to acquire resistance to insulin as well as higher glucose and insulin levels. Apo B-48 gene expression is elevated in acne individuals with severe form who have lipid abnormalities. This illustrating the importance of genetic variables in acne, insulin resistance, lipid profile modifications as well as Isotretinoin, a standard acne medication, can also cause lipid irregularities.
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Affiliation(s)
- Ahmed Ibrahim AbdElneam
- Department of Clinical Biochemistry, Department of Basic Medical Sciences, College of Medicine, Shaqra University, Dawadmi, Saudi Arabia; Molecular Genetics and Enzymology Department, Human Genetics and Genome Research Institute, National Research Center, 33 El Bohouth St. (former El Tahrir St.), Dokki 12622, Cairo, Egypt.
| | | | - Saleh Salem Bahaj
- Department of Microbiology and Immunology, Faculty of Medicine and Health Sciences, Sana'a University, Yemen.
| | - Ghada Farouk Mohammed
- Department of Dermatology, Venereology, and Sexology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt.
| | - Lina Mohamed Atef
- Department of Dermatology, Venereology, and Sexology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt.
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Yang MY, Liu J, Ning DC, Liu YT, Ye D, Tu C, Wang Z, Zeng WH. Combining superpulse dynamic CO 2 laser and supramolecular salicylic acid in the treatment of dense comedones with higher clearance in a shorter time: A prospective, randomized, split-face clinical trial. Lasers Surg Med 2023; 55:817-828. [PMID: 37582350 DOI: 10.1002/lsm.23717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 08/03/2023] [Accepted: 08/07/2023] [Indexed: 08/17/2023]
Abstract
OBJECTIVES Dense comedones are common in patients with acne vulgaris, and promoting treatment can prevent the progression of acne lesions. However, the efficacy-time conflict makes the treatment challenging and the medication options are limited by the side effects. MATERIALS AND METHODS Thirty-five patients with symmetrical dense comedones were enrolled and the two sides of the face were randomly assigned to receive 30% supramolecular salicylic acid (SSA) combined with CO2 laser or CO2 laser monotherapy at an interval of 2 weeks for six treatment sessions. Comedones count, porphyrin index (PI), texture index (TI), melanin index, erythema index, hydration index (HI), transepidermal water loss (TEWL), and side effects were recorded at each visit till the 12th week. RESULTS Thirty-one patients completed the study. Comedones on the combined-SSA side were reduced more after six treatments, that the mean reduction rate of the combined-SSA side was 85.76%, and that of the CO2 laser-treated side was 62.32% (Pbetween < 0.001). Combining SSA also showed a better effect on reducing PI and TI than CO2 laser singly (Pbetween < 0.001). TEWL and HI between the two sides showed no significant differences after treatments. No permanent or severe side effects were observed on both side. CONCLUSIONS The treatment combined CO2 laser with 30% SSA dealt with the efficacy-time conflict while significantly reducing comedones and improving skin texture in 12 weeks and no serious adverse reactions occurred. LIMITATIONS It is a single-center study and the number of subjects was small.
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Affiliation(s)
- Meng-Yao Yang
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Jing Liu
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Di-Chao Ning
- State Key Lab for Strength and Vibration of Mechanical Structures, Department of Engineering Mechanics, Xi'an Jiaotong University, Xi'an, China
| | - Yan-Ting Liu
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Dan Ye
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Chen Tu
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Zhao Wang
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Wei-Hui Zeng
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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Zhang D, Yu S, Ou Yang X, Wang X, Zhu Y, Xiao Z, Tan Y, Wu L, Li C. Untargeted Plasma Lipidomics Reveal Perturbed Metabolites of Glycerophospholipids, and Sphingolipids in Moderate-to-Severe Acne. Clin Cosmet Investig Dermatol 2023; 16:2189-2200. [PMID: 37588109 PMCID: PMC10426439 DOI: 10.2147/ccid.s426451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Accepted: 08/05/2023] [Indexed: 08/18/2023]
Abstract
BACKGROUND Acne vulgaris (AV) is a common inflammatory disorder involving the pilosebaceous unit. The study aimed to explore the plasma lipidome signatures and identify specific lipid biomarkers in moderate-to-severe acne patients. PATIENTS AND METHODS Untargeted plasma lipidomic analysis using ultra-high performance liquid chromatography system (UHPLC) coupled to q-extraction plus was employed on 30 moderate-to-severe acne patients aged between 16-25 years and 30 healthy controls. Multivariate data analyses were used to identify the distinguishing lipid metabolites. RESULTS All 1449 species of 37 lipid subclasses were identified from the MS data. There were apparent differences in plasma lipid profiles between acne groups and control groups. With variable influence on projection (VIP) > 1.0 and P-value < 0.05, 26 significantly different lipid metabolites were identified. These metabolites consisted mainly of glycerophospholipids (GPs), sphingolipids (SPs), and glycerolipids (GLs). Combining with AUC≥0.800 as the elected criteria, we obtained five differential lipids with good diagnostic performance for acne severity, including 2 sphingomyelins (SM), 1 phosphatidylglycerol (PG), 1 trihexosylceramide (Hex3Cer), and 1 Phosphatidylcholine (PC). Among them, PG (44:0) had the highest AUC values. CONCLUSION Our study revealed the plasma lipidome signature of patients with moderate-to-severe acne. The results will provide a novel light into the perturbed lipid metabolism leading to the development of acne.
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Affiliation(s)
- Deng Zhang
- Department of Dermatology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People’s Republic of China
| | - Simin Yu
- Department of Dermatology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People’s Republic of China
| | - Xiaoliang Ou Yang
- Department of Dermatology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People’s Republic of China
| | - Xiuping Wang
- Department of Dermatology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People’s Republic of China
| | - Yunxia Zhu
- Department of Dermatology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People’s Republic of China
| | - Zhen Xiao
- Department of Dermatology, Taiyuan Central Hospital, Taiyuan, Shanxi, People’s Republic of China
| | - Yanping Tan
- Department of Dermatology, Jiangxi Provincial Maternal and Child Health Hospital, Nanchang, Jiangxi, People’s Republic of China
| | - Liang Wu
- Department of Dermatology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People’s Republic of China
| | - Chunming Li
- Department of Dermatology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People’s Republic of China
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Tan J, Alexis A, Baldwin H, Beissert S, Bettoli V, Del Rosso J, Dréno B, Gold LS, Harper J, Lynde C, Thiboutot D, Weiss J, Layton AM. Gaps and recommendations for clinical management of truncal acne from the Personalising Acne: Consensus of Experts panel. JAAD Int 2021; 5:33-40. [PMID: 34816132 PMCID: PMC8593751 DOI: 10.1016/j.jdin.2021.06.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/25/2021] [Indexed: 11/30/2022] Open
Abstract
Background Truncal acne is common and burdensome for patients; however, there is paucity of evidence and guidance for the management of truncal acne. Currently, clinical practice guidelines provide very little guidance on the assessment or management of truncal acne. Objectives To identify unmet needs in truncal acne and make recommendations to address clinical and management gaps using an international consensus. Methods The Personalising Acne: Consensus of Experts panel consisted of 13 dermatologists, who used a modified Delphi approach to reach a consensus on statements related to clinically relevant aspects of truncal acne evaluation and management. A consensus was defined as ≥75% of the panelists voting “agree” or “strongly agree.” The voting was electronic and blinded. Results The panel identified gaps and made recommendations related to truncal acne identification, assessment, and grading; the evaluation of the impact on patients; and treatment goals and factors to be considered for its management. Limitations The recommendations are based on expert opinion, in the absence of high-quality evidence. Conclusions We highlighted addressing not just facial acne but also truncal acne during patient consultations. The recommendations made herein may help facilitate the care of patients who present with truncal acne, with or without facial acne.
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Affiliation(s)
- Jerry Tan
- Windsor Clinical Research Inc, Windsor, Ontario, Canada
- Department of Medicine, University of Western Ontario, Windsor Campus, Windsor, Ontario, Canada
- Correspondence to: Jerry Tan, MD, Windsor Clinical Research Inc, 2224 Walker Rd, Suite 300, Windsor, Ontario, N8W 5L7, Canada.
| | | | - Hilary Baldwin
- Robert Wood Johnson Medical Center, New Brunswick, New Jersey
- The Acne Treatment and Research Center, Brooklyn, New York
| | - Stefan Beissert
- Department of Dermatology, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Vincenzo Bettoli
- Dermatology Unit – Teaching Hospital, Azienda Ospedaliera, University of Ferrara, Ferrara, Italy
| | - James Del Rosso
- Thomas Dermatology, Las Vegas, Nevada
- JDR Dermatology Research, Las Vegas, Nevada
| | - Brigitte Dréno
- Dermato-cancérology Department, CHU Nantes, University of Nantes, Nantes, France
| | | | - Julie Harper
- Dermatology and Skin Care Center of Birmingham, Birmingham, Alabama
| | - Charles Lynde
- Department of Medicine, University of Toronto, Markham, Ontario, Canada
- Lynderm Research Inc, Markham, Ontario, Canada
| | - Diane Thiboutot
- Department of Dermatology, Pennsylvania State University College of Medicine, Hershey, Philadelphia
| | | | - Alison M. Layton
- Hull York Medical School, University of York, York, United Kingdom
- Harrogate and District NHS Foundation Trust, United Kingdom
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Leung AK, Barankin B, Lam JM, Leong KF, Hon KL. Dermatology: how to manage acne vulgaris. Drugs Context 2021; 10:dic-2021-8-6. [PMID: 34691199 PMCID: PMC8510514 DOI: 10.7573/dic.2021-8-6] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Accepted: 09/08/2021] [Indexed: 11/29/2022] Open
Abstract
Background Acne vulgaris is the most common skin disease that can lead to disfigurement and psychological distress. This article aims to provide a narrative updated review on the management of acne vulgaris. Methods A PubMed search was performed with Clinical Queries using the key term “acne”. The search strategy included clinical trials, meta-analyses, randomized controlled trials, observational studies and reviews. The search was restricted to articles published in English. Results Treatments of acne include proper skin care, topical medications, oral medications and procedural therapies. Topical agents are the first-line treatment for mild-to-moderate acne and can be used as combination therapy for more severe acne. Systemic therapies are usually prescribed for the initial treatment of moderate-to-severe acne as well as for acne that is refractory to topical therapies. Conclusion Topical retinoids are the drugs of choice for the treatment and maintenance therapy of patients with mild-to-moderate acne vulgaris. Depending on the severity of the acne, topical retinoids may be used alone or in combination with benzoyl peroxide and topical or oral antibiotics. Oral antibiotics are an important therapy for inflammatory acne unresponsive to topical therapy. Neither topical nor oral antibiotics should be used as monotherapy. Oral contraceptives and/or spironolactone are useful for many women with acne. Oral isotretinoin is the drug of choice for severe, extensive, nodular acne vulgaris but is also often used in moderate cases where scarring is evident, acne-related psychosocial distress is significant or other treatment modalities have failed.
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Affiliation(s)
- Alexander Kc Leung
- Department of Pediatrics, The University of Calgary, and The Alberta Children's Hospital, Calgary, Alberta, Canada
| | | | - Joseph M Lam
- Department of Dermatology and Skin Sciences, University of British Columbia and BC Children's Hospital, Vancouver, British Columbia, Canada
| | - Kin Fon Leong
- Pediatric Institute, Kuala Lumpur General Hospital, Kuala Lumpur, Malaysia
| | - Kam Lun Hon
- Department of Paediatrics and Adolescent Medicine, The Hong Kong Children's Hospital, Hong Kong
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Murlistyarini S, Nugroho ARL, Sari DT, Mandasari S. Precipitating Factors of Acne Vulgaris at Dr. Saiful Anwar Hospital Malang. JURNAL BERKALA EPIDEMIOLOGI 2021. [DOI: 10.20473/jbe.v9i32021.257-265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Background: Acne vulgaris (AV) is an inflammatory disease of the pilosebaceous unit, which often causes stress and disrupts quality of life. Correctly identifying precipitating factors and preventing disease development will holistically increase the effectiveness of acne therapy, enabling better therapeutic outcomes to be achieved. Purpose: The objective of this study is to identify the clinical profile and precipitating factors of AV patients who visited Dr. Saiful Anwar Hospital between 2015 until 2017. Methods: This was a descriptive study, using a retrospective case study approach. The sample data was collected from medical records of AV patients from the period of 2015–2017 who met the following inclusion criteria: new AV cases with a complete medical record including gender, age, and precipitating factors. The dependent variable of this study was new AV patients, while the independent variables were the patient clinical profile and precipitating factors. Results: This study included 930 samples, with the number of female patients significantly higher (75.48%) than the number of males. The highest AV prevalence was found in the 15–24 years age group. The most common precipitating factors in females were hormonal issues, stress, and cosmetics; in males, these were stress, genetics, and dietary factors. Conclusion: The incidence of AV at Dr. Saiful Anwar Hospital mostly occurs in the 15–24 years age group, with varying trigger factors. The most frequent AV trigger factor in female patients was hormonal issues; in males, this was stress.
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Propylene Glycol Improves Stability of the Anti-Inflammatory Compounds in Scutellaria baicalensis Extract. Processes (Basel) 2021. [DOI: 10.3390/pr9050894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Scutellaria baicalensis root extracts have been useful for external skin care and have been commercialized for years. Here, a comprehensive study was conducted to investigate the difference between 20% propylene glycol (PG) and water used as the storage solvent for a time course analysis of their remaining biological activities and ingredient compositions versus their freshly prepared conditions. Of the four major components in the 20% PG solvent, more than 80% of the components were retained after storage for two months, but in water only baicalin and wogonin were retained. The relative antibacterial activities, antioxidant properties and anti-inflammatory activities of the 20% PG solvent group were better than those of the water solvent group. Taken together, we demonstrated that these activities improved when PG, a common solvent used in many product formulas, was used as the storage solvent for the S. baicalensis extract.
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Sinha A, Singh AR. An Unforeseen Hazard of Masks Being in Vogue. THE INTERNATIONAL JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL MEDICINE 2020; 11:213-214. [PMID: 33098406 PMCID: PMC7740052 DOI: 10.34172/ijoem.2020.2211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 10/03/2020] [Indexed: 11/09/2022]
Affiliation(s)
- Anwita Sinha
- Department of Dermatology, Military Hospital Kirkee, Pune, India
| | - Anchit Raj Singh
- Department of Internal Medicine, Armed Forces Medical College, Pune, India.
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Sobhan M, Seif Rabiei MA, Amerifar M. Correlation Between Lipid Profile and Acne Vulgaris. Clin Cosmet Investig Dermatol 2020; 13:67-71. [PMID: 32021370 PMCID: PMC6982527 DOI: 10.2147/ccid.s230617] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 12/24/2019] [Indexed: 11/23/2022]
Abstract
Background and Aim Acne is a common skin disease resulting from a complex interaction of various pathogenetic factors. The aim of this study was to find out lipid profile abnormalities in acne vulgaris patients. Material and Methods This descriptive analytic cross-sectional study was conducted on 45 acne patients and 45 age- and sex-matched healthy controls to assess plasma total cholesterol (TC), low-density lipoprotein cholesterol (LDL), high-density lipoprotein cholesterol (HDL), and triglyceride (TG) levels. Results We showed a higher cholesterol level in acne patients (P=0.025), particularly in men (P=0.04). Other plasma lipids including TG, LDL, and HDL in male and female patients were higher compared to controls, but this is not statistically significant. Discussion and Conclusion In conclusion, lipid profile was altered in our patients, with high cholesterol level as the commonest derangement, particularly in men. Therefore, screening for lipid profile abnormalities could be considered in the treatment of acne patients.
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Affiliation(s)
- Mohammadreza Sobhan
- Psoriasis Research Center, Department of Dermatology, Sina Hospital, Hamadan University of Medical Sciences, Hamadan, Iran
| | | | - Maryam Amerifar
- Psoriasis Research Center, Department of Dermatology, Sina Hospital, Hamadan University of Medical Sciences, Hamadan, Iran
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Aalemi AK, Anwar I, Chen H. Dairy consumption and acne: a case control study in Kabul, Afghanistan. Clin Cosmet Investig Dermatol 2019; 12:481-487. [PMID: 31303778 PMCID: PMC6611707 DOI: 10.2147/ccid.s195191] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Accepted: 05/27/2019] [Indexed: 12/18/2022]
Abstract
Background Previous observational studies suggest that the development of acne may be triggered by dairy intake. Objective This study aimed to investigate the association of dairy intake and acne in Kabul citizens. Methods From February to September 2018, 279 acne patients and 279 controls aged 10–24 years were enrolled in a case control study at the dermatologic outpatient department of Maiwand Teaching Hospital in Kabul City, Afghanistan. The acne severity was determined by a dermatologist using the Global Acne Severity Scale. Results The consumption of whole milk 3 days or more per week was associated with moderate to severe acne (OR =2.36, 95% CI, 1.39–4.01). The association for low fat milk was less marked than for whole milk (OR 1.95 CI, 1.10–3.45). The risk was increased in those with a family history of acne in siblings (OR =4.13, 95% CI, 2.55–6.69). The risk was reduced in subjects doing physical exercise. No association with smoking emerged. A protective effect was associated with chicken consumption (OR =0.27, 95% CI, 0.15–0.49). Consumption of chocolate and chips was positively associated with acne. Conclusion This study showed an association between high intakes of dairy products and acne in adolescence suggesting that dairy intake may be a factor contributing to acne.
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Affiliation(s)
- Ahmad Khalid Aalemi
- Department of Dermatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.,Department of Epidemiology, Kabul University of Medical Sciences, Kabul 1001, Afghanistan
| | - Idris Anwar
- Department of Environmental Health, Kabul University of Medical Sciences, Kabul 1001, Afghanistan
| | - Hongxiang Chen
- Department of Dermatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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Tizek L, Schielein M, Seifert F, Biedermann T, Böhner A, Zink A. Skin diseases are more common than we think: screening results of an unreferred population at the Munich Oktoberfest. J Eur Acad Dermatol Venereol 2019; 33:1421-1428. [DOI: 10.1111/jdv.15494] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 01/18/2019] [Indexed: 02/06/2023]
Affiliation(s)
- L. Tizek
- Department of Dermatology and Allergy Technical University of Munich Munich Germany
- Institute for Medical Information Processing, Biometry and Epidemiology (IBE) LMU Munich Munich Germany
| | - M.C. Schielein
- Department of Dermatology and Allergy Technical University of Munich Munich Germany
- Institute for Medical Information Processing, Biometry and Epidemiology (IBE) LMU Munich Munich Germany
| | | | - T. Biedermann
- Department of Dermatology and Allergy Technical University of Munich Munich Germany
| | - A. Böhner
- Department of Dermatology and Allergy Technical University of Munich Munich Germany
| | - A. Zink
- Department of Dermatology and Allergy Technical University of Munich Munich Germany
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