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Skin hyperpigmentation

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https://www.readbyqxmd.com/read/29222629/postinflammatory-hyperpigmentation-epidemiology-clinical-presentation-pathogenesis-and-treatment
#1
REVIEW
Bridget P Kaufman, Taulun Aman, Andrew F Alexis
Postinflammatory hyperpigmentation (PIH) is a reactive hypermelanosis that develops following cutaneous inflammation. Common causes of PIH include intrinsic skin conditions (e.g., acne and eczema) as well as external insults to the skin, such as burn injuries and dermatologic procedures. PIH more commonly occurs in individuals with darker skin, for whom it is often a source of significant psychological distress. Several therapeutic modalities are available for the treatment of PIH, including topical agents, chemical peels, and energy-based devices...
December 8, 2017: American Journal of Clinical Dermatology
https://www.readbyqxmd.com/read/29220066/periorbital-changes-associated-with-topical-prostaglandins-analogues-in-a-hispanic-population
#2
Ferdinand Rodríguez-Agramonte, Juan Carlos Jiménez, José Raúl Montes
OBJECTIVE: To describe the prevalent side effects of prostaglandin analogues (PA) in a Hispanic population and their effect on quality of life (QOL). PATIENTS AND METHODS: This is a cross-sectional study conducted in a tertiary medical facility in which patients were evaluated in a single visit. Total of 14 participants in the study, 10 women and 4 men. Ages ranged from 26-78 years old. Subjects underwent a single full Oculoplastic evaluation by two physicians; one was blinded on patient medical history and assessed for PA side effects...
December 2017: Puerto Rico Health Sciences Journal
https://www.readbyqxmd.com/read/29207659/2-3-4-dihydroxybenzylidene-malononitrile-as-a-novel-anti-melanogenic-compound
#3
Bonggi Lee, Kyoung Mi Moon, Jong Seung Lim, Yeojin Park, Do Hyun Kim, Sujin Son, Hyoung Oh Jeong, Dae Hyun Kim, Eun Kyeong Lee, Ki Wung Chung, Hye Jin An, Pusoon Chun, Arnold Y Seo, Ju-Hye Yang, Bong-Seon Lee, Jin Yeul Ma, Won-Kyung Cho, Hyung Ryong Moon, Hae Young Chung
Tyrosinase is a key player in ultraviolet-induced melanogenesis. Because excessive melanin accumulation in the skin can induce hyperpigmentation, the development of tyrosinase inhibitors has attracted attention in cosmetic-related fields. However, side effects including toxicity and low selectivity have limited the use of many tyrosinase inhibitors in cosmetics. We synthesized 12 novel 2-(substituted benzylidene)malononitrile derivatives and investigated their anti-melanogenic activities. Of these 12 compounds, 2-(3, 4-dihydroxy benzylidene)malononitrile (BMN11) exhibited the strongest inhibitory activity against tyrosinase (IC50 = 17...
October 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/29204386/identification-of-genotypes-and-allelic-frequencies-of-vitamin-d-receptor-gene-polymorphism-taqi-in-egyptian-melasma-patients
#4
Iman Seleit, Ola Ahmed Bakry, Eman Masoud, Shaimaa Nabil
Background: Melasma is a characteristic pattern of facial hyperpigmentation, occurring primarily on the forehead, cheeks, and chin, in a mask-like distribution. The pathogenesis of melasma is not fully understood. Vitamin D plays a role in skin pigmentation. It exerts its effect through vitamin D receptor (VDR), which is expressed in variable cells including normal melanocytes. Aim and Objective: The aim of the current work was to investigate if VDR gene polymorphism (TaqI) confers susceptibility to melasma in Egyptian patients...
November 2017: Indian Dermatology Online Journal
https://www.readbyqxmd.com/read/29200769/treatment-of-melasma-and-post-inflammatory-hyperpigmentation-by-a-picosecond-755-nm-alexandrite-laser-in-asian-patients
#5
Ye Jin Lee, Ho Jeong Shin, Tai-Kyung Noh, Kwang-Ho Choi, Sung-Eun Chang
The picosecond lasers have shown to effectively treat tattoo pigments that are intractable to previous multiple Q-switched (QS) laser treatments. Therefore we hypothesized that a picosecond laser would show better efficacy with minimal adverse events in the treatment of melasma and post-inflammatory hyperpigmentation (PIH) that are difficult to treat with conventional QS lasers. Two patients with melasma and one patient with PIH were treated with a Picosecond 755-nm Alexandrite Laser (Cyanosure, USA). All patients were Korean with skin type IV and no longer responding to QS laser treatments...
December 2017: Annals of Dermatology
https://www.readbyqxmd.com/read/29200759/increased-skin-irritation-by-hydroquinone-and-rsetinoic-acid-used-in-combination
#6
Gwang Hoon Kim, Kyung Ah Cheong, Ai-Young Lee
Background: Hydroquinone (HQ) is frequently combined with retinoic acid (RA) to enhance lightening efficacy, which may also affect skin irritancy. Although skin irritation leads to postinflammatory hyperpigmentation, little research has been performed to compare skin irritancy between each component and the combination. Objective: This study was done to examine whether HQ-RA combination increased skin irritation induced by HQ or RA alone. Methods: Patch testing was performed using maximum therapeutic and higher concentrations of HQ and RA in 10 volunteers, and then, it was performed using their popular therapeutic concentrations and combination in the other 20 volunteers...
December 2017: Annals of Dermatology
https://www.readbyqxmd.com/read/29193788/efficacy-and-safety-of-topical-depigmenting-agent-in-healthy-human-fair-skin-female-volunteers-a-single-arm-study
#7
Saurabh Shah, Soon-Keong Chew
BACKGROUND: Skin hyperpigmentation is the darkening of skin due to the increased production of melanin in the body. OBJECTIVES: To evaluate the efficacy and safety of a botanical-based Rosa E pigmentation serum in healthy fair skin female volunteers with wrinkles, skin tone, and pigmentation. METHODS: This was a single-arm, open label study conducted in healthy Indian females; 18 subjects aged 30-55, having fair Caucasian-like skin with at least 2 dark skin pigments with facial wrinkles diagnosed by dermatologist were selected...
November 28, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/29184811/dermatologic-manifestations-of-endocrine-disorders
#8
REVIEW
Michael Lause, Alisha Kamboj, Esteban Fernandez Faith
The skin serves as a window for clinicians to understand, diagnose, and monitor endocrine disease. Dermatologic manifestations of endocrinopathies contribute significantly to an individual's health and quality of life. In this review, we outline various disorders of the hypothalamic-pituitary axis, thyroid gland, pancreas, adrenal gland, and androgen axis as well as hereditary endocrine syndromes. In acromegaly, glycosaminoglycan deposition contributes to a thickening of skin and soft tissue, which manifests as coarsening and enlargement of facial and acral structures...
October 2017: Translational pediatrics
https://www.readbyqxmd.com/read/29179286/-decolorization-of-skin-and-hair-derived-melanin-by-three-ligninolytic-enzymes
#9
F Miao, T C Lei, M Y Su, W J Yi, S Jiang, S Z Xu
Objective: To compare the decolorization efficiency of lignin peroxidase (LiP), manganese peroxidase (MnP) and laccase on eumelanin and pheomelanin, and to investigate the effect of topical administration of LiP solution on hyperpigmented guinea pigs skin induced by 308 nm excimer light. Methods: Pheomelanin-enriched specimens were prepared from human hair and cutaneous melanoma tissue using alkaline lysis method.Synthetic eumelanin was purchased from a commercial supplier.The same amount (0.02%) of melanin was incubated with the equal enzyme activity (0...
November 21, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29178944/malignant-acanthosis-nigricans-an-early-diagnostic-clue-for-gastric-adenocarcinoma
#10
Qian Yu, Xiu-Li Li, Guo Ji, Yao Wang, Yu Gong, Hui Xu, Yu-Ling Shi
BACKGROUND: Malignant acanthosis nigricans (MAN), characterized by the presence of a hyperpigmented, velvety cutaneous thickening, is recognized as a cutaneous sign of internal malignancy. Few MAN has been reported in the Asian race ever before. CASE PRESENTATION: Here, we report a rare case of MAN with severe mucosa and soles and extraordinary facial involvement in the Asian race. A 74-year-old man presented with hyperkeratotic eruption for 7 months. Physical examination revealed hyperkeratotic plaques on the face, dorsal skin of fingers and heels, and papillomatosis of buccal mucosa...
November 25, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29178636/a-novel-splice-site-variant-in-cyp11a1-in-trans-with-the-p-e314k-variant-in-a-male-patient-with-congenital-adrenal-insufficiency
#11
Montserrat Lara-Velazquez, Alexander Perdomo-Pantoja, Patrick R Blackburn, Jennifer M Gass, Thomas R Caulfield, Paldeep S Atwal
BACKGROUND: The CYP11A1 gene encodes the cytochrome P450 side-chain cleavage enzyme, which is essential for steroid formation. Recessive variants in this gene can lead to impairment of sexual differentiation caused by a complete or partial loss of steroid hormone production. The phenotypic spectrum in affected 46XY males may vary from surgically repairable defects including cryptorchidism and hypospadias to complete feminization of external gonads, accompanied by symptoms of adrenal dysfunction...
November 2017: Molecular Genetics & Genomic Medicine
https://www.readbyqxmd.com/read/29178495/novel-device-based-acne-treatments-comparison-of-a-1-450-nm-diode-laser-and-micro-needling-radiofrequency-on-mild-to-moderate-acne-vulgaris-and-seborrhea-in-korean-patients-through-a-20-week-prospective-randomized-split-face-study
#12
H H Kwon, H Y Park, S C Choi, Y Bae, J Y Jung, G-H Park
BACKGROUND: While device-based acne treatments are widely applied for patients not tolerating conventional medications, related controlled studies have been still limited. Recently, non-ablative 1,450-nm diode laser (DL) and fractional micro-needling radiofrequency (FMR) have been effectively used for acne, in addition to well-recognized dermal remodeling effects. OBJECTIVE: To compare the clinical course for acne treatment between DL and FMR. METHODS: Twenty five Korean patients with mild to moderate facial acne completed treatments with DL and FMR through a 20-week, randomized split-face study...
November 24, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/29178413/in-vivo-reflectance-confocal-microscopy-in-daily-practice-image-features-correlated-to-histopathology
#13
Z-Y Pan, D-K Dong, S-J Chen, L-Y Lu, T-T Hu, Q Ju
BACKGROUND: In vivo reflectance confocal microscopy (RCM) represents a promising technique for noninvasive visualization of skin lesions. In the clinical daily practice, doctors want to know the relationship between the RCM images and the skin pathological changes. OBJECTIVE: The aim of this study was to identify the basic skin pathological changes under RCM, and use RCM terminology to describe these pathological changes. METHODS: A total of 100 patients were recruited and were evaluated both by RCM and histopathologic examination...
November 27, 2017: Skin Research and Technology
https://www.readbyqxmd.com/read/29177714/non-invasive-high-intensity-focused-ultrasound-for-uv-induced-hyperpigmentation-in-fitzpatrick-skin-types-iii-and-iv-a-prospective-randomized-controlled-evaluator-blinded-trial
#14
Vasanop Vachiramon, Natthachat Jurairattanaporn, Sarawin Harnchoowong, Pamela Chayavichitsilp
Skin hyperpigmentation is a frequently encountered problem, particularly in darker skin types. Unfortunately, standard treatments for this condition have shown disappointing results. High-intensity focused ultrasound (HIFU) is commonly indicated for skin laxity, but recently was used to treat UV-induced hyperpigmentation in animal models. This study is aimed to evaluate the efficacy and safety of high-intensity focused ultrasound for UVB-induced hyperpigmentation in human subjects. A randomized, evaluator-blinded pilot study was conducted on 20 subjects...
November 27, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29164778/open-label-study-assessing-the-efficacy-and-tolerability-of-topical-skincare-and-sun-protection-products-following-intense-pulsed-light-treatment
#15
Isabela T Jones, Isabella Guiha, Sabrina G Fabi
BACKGROUND: The visible signs of photodamage can be improved by intense pulsed light (IPL). Active ingredients in cosmeceuticals also have effects on skin quality and pigmentation, and can camouflage post-treatment side effects. Combination therapies utilizing different treatment modalities have been shown to optimize clinical outcomes for skin rejuvenation and patient satisfaction. AIM: To evaluate the efficacy of a combination of IPL with a daily topical skincare and sunscreen regimen for the treatment of facial photodamage and for the improvement of IPL treatment tolerability...
November 21, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/29146972/specific-targeting-of-melanotic-cells-with-peptide-ligated-photosensitizers-for-photodynamic-therapy
#16
Paul Lorenz Bigliardi, Bhimsen Rout, Aakanksha Pant, Viknish Krishnan-Kutty, Alex N Eberle, Ramasamy Srinivas, Brendan Adrian Burkett, Mei Bigliardi-Qi
A strategy combining covalent conjugation of photosensitizers to a peptide ligand directed to the melanocortin 1 (MC1) receptor with the application of sequential LED light dosage at near-IR wavelengths was developed to achieve specific cytotoxicity to melanocytes and melanoma (MEL) with minimal collateral damage to surrounding cells such as keratinocytes (KER). The specific killing of melanotic cells by targeted photodynamic therapy (PDT) described in this study holds promise as a potentially effective adjuvant therapeutic method to control benign skin hyperpigmentation or superficial melanotic malignancy such as Lentigo Maligna Melanoma (LMM)...
November 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29142785/role-of-cord-blood-and-bone-marrow-mesenchymal-stem-cells-in-recent-deep-burn-a-case-control-prospective-study
#17
Wael Abo-Elkheir, Fawzy Hamza, Ahmed M Elmofty, Atef Emam, Magdy Abdl-Moktader, Sameh Elsherefy, Hala Gabr
RATIONALE: Burn injuries represent one of the major worldwide public health problems causing more severe physiological stress than other traumas. Effective treatment of burn injuries is mandatory to prevent the numerous life-threatening complications and possible disabilities. Stem cells, a population of multipotent cells retaining the properties of self-renewal and differentiation, are the main player in tissue regeneration after major trauma. Thus, they are thought to play a key role in wound healing inducing efficient and physiological skin regeneration...
2017: American Journal of Stem Cells
https://www.readbyqxmd.com/read/29141687/autologous-adipose-derived-regenerative-cell-therapy-modulates-development-of-hypertrophic-scarring-in-a-red-duroc-porcine-model
#18
Philippe Foubert, Diana Zafra, Mike Liu, Rohit Rajoria, Damian Gutierrez, Mayer Tenenhaus, John K Fraser
BACKGROUND: Effective prevention and treatment of hypertrophic scars (HTSs), a common consequence of deep-partial thickness injury, remain a significant clinical challenge. Previous studies from our group have shown that autologous adipose-derived regenerative cells (ADRCs) represent a promising approach to improve wound healing and, thereby, impact HTS development. The purpose of this study was to assess the influence of local delivery of ADRCs immediately following deep-partial thickness cutaneous injury on HTS development in the red Duroc (RD) porcine model...
November 15, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29141061/a-randomized-investigator-blinded-comparison-of-two-topical-regimens-in-fitzpatrick-skin-types-iii-vi-with-moderate-to-severe-facial-hyperpigmentation
#19
Monique J Vanaman Wilson, Isabela T Jones, Joanna Bolton, Lisa Larsen, Douglas C Wu, Mitchel P Goldman
<p>Purpose: Though hydroquinone (HQ) remains the gold standard for treatment of hyperpigmentation, concerns about its safety have prompted the development of HQ-free topical skin lightening systems. OBJECTIVE: To compare the efficacy and tolerability of a new HQ-free system and a popular HQ-based system for the improvement of facial hyperpigmentation and photoaging in darker skin types. METHODS: This investigator-blinded trial randomized 30 subjects of Fitzpatrick skin types III to VI with moderate to severe hyperpigmentation to a new 7-product HQ-free system or a 7-product HQ-based system for 12 weeks...
November 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/29141060/efficacy-of-low-fluence-nd-yag-1064-nm-laser-for-the-treatment-of-post-inflammatory-hyperpigmentation-in-the-axillary-area
#20
Sahar Ghannam, Fatemah K Al Otabi, Konstantin Frank, Sebastian Cotofana
<p>OBJECTIVE: Post-inflammatory hyperpigmentation results in aesthetically unpleasant discoloration of the skin in the affected area. The efficacy of low-fluence Q-switched 1064-nm Nd:YAG laser has so far not been evaluated for the treatment of the axilla. This observational study was designed to evaluate whether the application of the laser treatment can satisfactorily reduce axillary hyperpigmentation. MATERIAL AND METHODS: 17 females (mean age, 34.27 ± 9.24; range, 19-48) were treated in a single center between 2014 and 2016 for post-inflammatory hyperpigmentation of the axillary area...
November 1, 2017: Journal of Drugs in Dermatology: JDD
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