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Androgenic alopecia

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https://www.readbyqxmd.com/read/28941500/prostaglandin-d2-uses-components-of-ros-signaling-to-enhance-testosterone-production-in-keratinocytes
#1
Alon Mantel, J Tyson McDonald, Kennedy Goldsborough, Valerie M Harvey, Joanne Chan
Elevated levels of prostaglandin D2 (PGD2) have been shown to be present in the bald scalp of androgenic alopecia (AGA) patients and to functionally inhibit hair growth. However, its precise mechanism in AGA has yet to be clearly defined. Although testosterone plays a critical role in the initiation and progression of AGA, the existence of a possible link between PGD2 and testosterone in skin has not been investigated. Here we show that human keratinocytes treated with PGD2 show enhanced capacity to convert the weak androgen, androstenedione, to testosterone...
October 2017: Journal of Investigative Dermatology. Symposium Proceedings
https://www.readbyqxmd.com/read/28940857/prevalence-of-dermatologic-manifestations-and-metabolic-biomarkers-in-women-with-polycystic-ovary-syndrome-in-north-china
#2
Jin-Ge Feng, Yan Guo, Li-Ang Ma, Jin Xing, Rui-Feng Sun, Wei Zhu
BACKGROUND: Cutaneous features of hyperandrogenism in polycystic ovary syndrome (PCOS) include acne, hirsutism, seborrhea, androgenic alopecia (AGA), and acanthosis nigricans (AN). However, the relationships have not been well known broadly in terms of clinical hyperandrogenism and biochemical markers. OBJECTIVES: The aim of this study was to investigate biochemical and metabolic parameters in relation to cutaneous characters women in with and without PCOS. METHODS: This was a cross-sectional retrospective study including 186 women with PCOS and 113 age-matched without PCOS women...
September 21, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/28932059/prevalence-of-nutritional-deficiencies-in-hair-loss-among-indian-participants-results-of-a-cross-sectional-study
#3
Dinesh Gowda, V Premalatha, D B Imtiyaz
BACKGROUND: Nutritional deficiencies are known to be associated with hair loss; however, the exact prevalence is not known. AIMS: The aim of this study is to evaluate the prevalence of nutritional deficiencies in participants with hair loss. MATERIALS AND METHODS: In this cross-sectional study, 100 enrolled participants were divided into telogen effluvium (TE), male-pattern hair loss (MPHL), and female-pattern hair loss (FPHL) based on the type of hair loss...
July 2017: International Journal of Trichology
https://www.readbyqxmd.com/read/28915843/protective-effects-of-gaba-against-metabolic-and-reproductive-disturbances-in-letrozole-induced-polycystic-ovarian-syndrome-in-rats
#4
Asad Ullah, Sarwat Jahan, Suhail Razak, Madeeha Pirzada, Hizb Ullah, Ali Almajwal, Naveed Rauf, Tayyaba Afsar
BACKGROUND: PCOs is a heterogeneous disorder with anovulation/oligo ovulation usually taken as oligo menorrhoea or amenorrhoea, hyperandrogenemia, hirsutism, acne, androgen alopecia and polycystic ovaries as the key diagnostic feathers. The study was undertaken to investigate the possible protective and ameliorating effects of GABA in Letrozole induced PCOS model in rats by targeting insulin resistance. METHODS: PCOs in Adult female rat was induced by the daily gastric administration of letrozole (1 mg/kg/day) in CMC (0...
September 15, 2017: Journal of Ovarian Research
https://www.readbyqxmd.com/read/28912032/androgens-and-androgen-receptor-action-in-skin-and-hair-follicles
#5
REVIEW
Julieta María Ceruti, Gustavo José Leirós, María Eugenia Balañá
Beyond sexual functions, androgens exert their action in skin physiology and pathophysiology. Skin cells are able to synthesize most of active androgens from gonadal or adrenal precursors and the enzymes involved in skin steroidogenesis are implicated both in normal or pathological processes. Even when the role of androgens and androgen receptor (AR) in skin pathologies has been studied for decades, their molecular mechanisms in skin disorders remain largely unknown. Here, we go over recent studies of androgens and AR roles in several skin-related disorders, focusing in the current understanding of its molecular mechanisms in androgenetic alopecia (AGA)...
September 11, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28905175/the-promotion-of-hair-regrowth-by-topical-application-of-a-perilla-frutescens-extract-through-increased-cell-viability-and-antagonism-of-testosterone-and-dihydrotestosterone
#6
Jing-Jie Li, Zheng Li, Li-Juan Gu, Kang-Ju Choi, Dong-Seon Kim, Ho-Kyoung Kim, Chang-Keun Sung
This study investigated the potential hair regrowth effects associated with a plant extract of Perilla frutescens, which was selected due to its putative hair regrowth activity. Extracts were prepared from dried P. frutescens suspended in distilled water, where the resultant aqueous suspension was fractionated sequentially using hexane, ethyl acetate, n-butanol, and distilled water. We observed that the n-butanol fraction resulted in the highest hair regrowth activity. The n-butanol soluble fraction of P. frutescens extract (BFPE) was further separated using AB-8 macroporous resin and silica gel chromatography to obtain rosmarinic acid (RA), which demonstrated effective hair growth regeneration potential...
September 13, 2017: Journal of Natural Medicines
https://www.readbyqxmd.com/read/28885585/hair-regenerative-mechanisms-of-red-ginseng-oil-and-its-major-components-in-the-testosterone-induced-delay-of-anagen-entry-in-c57bl-6-mice
#7
Van-Long Truong, Min Ji Bak, Changook Lee, Mira Jun, Woo-Sik Jeong
Hair loss (alopecia) is a universal problem for numerous people in the world. The present study was conducted to investigate the effects of red ginseng oil (RGO) and its major components on hair re-growth using testosterone (TES)-induced delay of anagen entry in C57BL/6 mice and their mechanisms of action. Seven-week-old C57BL/6 mice were daily treated with TES for 1 h prior to topical application of 10% RGO, 1% linoleic acid (LA), 1% β-sitosterol (SITOS), or 1% bicyclo(10.1.0)tridec-1-ene (BICYCLO) once a day for 28 days...
September 8, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28856798/digit-ratio-2d-4d-is-a-possible-indicator-for-androgenetic-alopecia-in-males
#8
Mehmet Unal
BACKGROUND: Androgenetic alopecia (AGA) is the most common hair loss. The 2D:4D digit ratio refers to the ratio of the length of the second finger to that of the fourth finger and is thought as a marker of prenatal androgen exposure. OBJECTIVES: There are many studies which have examined the relationship between 2D:4D ratio and some other diseases. In this study, we evaluated the relationship between digit ratio 2D:4D and AGA. METHODS: The study group was composed of a male with AGA and healthy controls...
August 29, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/28852294/a-spilt-head-study-of-efficacy-of-placebo-versus-platelet-rich-plasma-injections-in-the-treatment-of-androgenic-alopecia
#9
Dilip Kachhawa, Gauri Vats, Durgesh Sonare, Pankaj Rao, Sandeep Khuraiya, Rohit Kataiya
BACKGROUND: Platelet-rich plasma (PRP) is an autologous concentration of human platelets contained in a small volume of plasma with haemostatic and tissue repairing effects. Being enriched by various growth factors, PRP has become the focus of attention in numerous fields of medicine. Androgenic alopecia (AGA) is a common chronic hair loss disorder, characterised by progressive hair loss. Despite the therapeutic options available, there is low patient compliance and satisfaction rate...
April 2017: Journal of Cutaneous and Aesthetic Surgery
https://www.readbyqxmd.com/read/28816743/elastic-staining-in-differentiating-between-follicular-streamers-and-follicular-scars-in-horizontal-scalp-biopsy-sections
#10
Timothy Tan, Joan Guitart, Pedram Gerami, Pedram Yazdan
BACKGROUND: Accurate identification of follicular streamers versus follicular scars on horizontal scalp biopsy sections is important to differentiate between cicatricial and noncicatricial alopecias. However, distinguishing between them can be difficult especially in nonoptimal specimens. The utility of elastic Verhoeff-Van Gieson (EVG) stain in cicatricial alopecias has been described on vertical sections, but its evaluation on horizontal sections has not been performed. METHODS: Sixty-four cicatricial alopecias (25 lichen planopilaris, 29 central centrifugal cicatricial alopecias, and 10 discoid lupus erythematosus) and 53 noncicatricial alopecias (34 androgenic alopecia, 8 telogen effluvium, and 11 alopecia areata) were identified, and EVG staining was performed on horizontal sections...
August 9, 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28815175/platelet-rich-plasma-an-elixir-for-treatment-of-alopecia-personal-experience-on-117-patients-with-review-of-literature
#11
REVIEW
Suruchi Garg, Shweta Manchanda
Platelet-rich plasma (PRP) has emerged as a new treatment modality in regenerative plastic surgery and dermatology. PRP is a simple, cost-effective and feasible treatment option with high patient satisfaction for hair loss and can be regarded as a valuable adjuvant treatment modality for androgenic alopecia and other types of non-scarring alopecias. Authors have proposed a hair model termed "Golden anchorage with 'molecular locking' of ectodermal and mesenchymal components for survival and integrity of hair follicle (HF)" in this article...
2017: Stem Cell Investigation
https://www.readbyqxmd.com/read/28812164/efficacy-of-fractional-lasers-in-treating-alopecia-a-literature-review
#12
Marina Perper, Adam S Aldahan, Rachel A Fayne, Christopher P Emerson, Keyvan Nouri
Hair loss stemming from different types of alopecia, such as androgenic alopecia and alopecia areata, negatively affects over half the population and, in many circumstances, causes serious psychosocial distress. Current treatment options for alopecia, such as minoxidil, anthralin, and intralesional corticosteroids, vary efficacy and side effect profiles. It is known that low-level laser/light therapies (LLLT), or photobiomodulations, such as the US FDA-cleared HairMax Lasercomb®, He-Ne laser, and excimer laser, are relatively affordable, user-friendly, safe, and effective forms of treatment for hair loss...
August 16, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28771982/original-article-platelet-rich-plasma-with-microneedling-in-androgenetic-alopecia-along-with-dermoscopic-pre-and-post-treatment-evaluation
#13
Abhijeet Kumar Jha, Uday Kumar Udayan, Prasoon Kumar Roy, Amar Kant Jha Amar, R K P Chaudhary
BACKGROUND: Platelet-rich plasma has shown beneficial effects in the treatment of androgenic alopecia with its growth factor properties in accelerating the dermal papilla. Dermoscopy is a noninvasive method that allows the in vivo evaluation of microstructures not visible to the naked eye. OBJECTIVE: To ascertain the role of platelet-rich plasma (PRP) with microneedling, and to compare the pre- and post-treatment dermoscopic features in androgenetic alopecia. (AGA)...
August 3, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/28770536/preparation-and-in-vivo-evaluation-of-lecithin-based-microparticles-for-topical-delivery-of-minoxidil
#14
Hyo-Jung Lee, Dong-Won Oh, Min-Ju Na, Dong-Wook Kim, Dong-Yeon Yuk, Hyoung-Chul Choi, Yong-Beom Lee, Kun Han, Chun-Woong Park
Minoxidil is widely used for treatment of androgenic alopecia. Commercial products containing minoxidil are usually in solution form. Repeated applications of minoxidil solution can lead to adverse effects such as skin irritation and horniness. The aims of this study were to prepare lecithin-based microparticle in minoxidil solution for enhancement of minoxidil topical delivery and skin protection and evaluate the ability of lecithin on in vitro delivery, in vivo hair growth, and skin trouble improvement compared to commercial minoxidil solution...
August 2, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/28761261/presence-of-mast-cells-and-mast-cell-degranulation-in-scalp-biopsies-of-telogen-effluvium
#15
Shane A Grace, Angela M Sutton, Nina Abraham, Eric S Armbrecht, Claudia I Vidal
BACKGROUND: Telogen effluvium (TE) is a type of acquired, diffuse alopecia that occurs due to an abnormal shift of scalp hair follicles from anagen to telogen, leading to premature shedding of hair. Previous studies have suggested the existence of a neuroimmunologic "brain-hair follicle" axis, in which mast cells have been implicated as an important link between the nervous system and immunologic system. OBJECTIVE: The current study sought to investigate the role of mast cell presence and mast cell degranulation in the pathogenesis of TE...
January 2017: International Journal of Trichology
https://www.readbyqxmd.com/read/28754756/androgenic-alopecia-an-entity-to-consider-in-adolescence
#16
Marlene Rodrigues, Inês Antunes, Sara Magalhães, Nelson Pereira
No abstract text is available yet for this article.
July 27, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28722460/-psychological-consequences-of-hair-loss
#17
Zora Dubská
Hair plays an important role in human life. Quantitative or qualitative changes of hair are therefore perceived unfavorably. The psychological consequences of hair loss are described in both androgenic alopecia and alopecia areata. Alopecia areata should be distinguished from other diagnostic units such as trichotillomania. The issue of hair disease requires a multidisciplinary collaboration, in which the dermatologist has a key role to play.
2017: Casopís Lékar̆ů C̆eských
https://www.readbyqxmd.com/read/28691187/therapeutic-experience-with-oral-finasteride-for-androgenetic-alopecia-in-female-to-male-transgender-patients
#18
O M Moreno-Arrones, A Becerra, S Vano-Galvan
BACKGROUND: Androgenic treatment of female-to-male transgender patients may result in androgenetic alopecia (AGA). Use of 5-alpha-reductase inhibitors are useful as oral treatment of AA in men. There are no previous studies of the use of finasteride in transgender men as treatment of AGA. AIM: To evaluate the effectiveness and safety of an oral 5α-reductase inhibitor (finasteride) for AA developed in transgender men. METHODS: This single-centre retrospective study enrolled female-to-male transgender patients with a clinical diagnosis of AGA to receive 1 mg of an oral type II 5α-reductase inhibitor for at least 12 months...
July 10, 2017: Clinical and Experimental Dermatology
https://www.readbyqxmd.com/read/28689433/experimental-and-early-investigational-drugs-for-androgenetic-alopecia
#19
REVIEW
Hongwei Guo, Wendi Victor Gao, Hiromi Endo, Kevin John McElwee
Treatments for androgenetic alopecia constitute a multi-billion-dollar industry, however, currently available therapeutic options have variable efficacy. Consequently, in recent years small biotechnology companies and academic research laboratories have begun to investigate new or improved treatment methods. Research and development approaches include improved formulations and modes of application for current drugs, new drug development, development of cell-based treatments, and medical devices for modulation of hair growth...
August 2017: Expert Opinion on Investigational Drugs
https://www.readbyqxmd.com/read/28676455/injections-of-platelet-rich-plasma-for-androgenic-alopecia-a-systematic-review
#20
F Picard, B Hersant, J Niddam, J-P Meningaud
The aim of this literature review was to evaluate the effects of PRP injections into the scalp of patients with androgenic alopecia. A literature review was conducted using the Pubmed and Google Scholar databases with the search terms "platelet-rich plasma" or "platelet-rich fibrin" and "hair" or "alopecia" or "androgenic alopecia". The publications included had to clinically assess the efficacy of PRP injections in patients with androgenic alopecia. Out of the 32 publications retrieved, 14 publications were included, of which 3 randomized, 4 prospective controlled, 4 prospective uncontrolled and 3 retrospective studies...
July 1, 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
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