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https://www.readbyqxmd.com/read/27881935/hair-diseases-a-big-problem-on-a-small-surface
#1
REVIEW
Ligia A Brzezińska-Wcisło, Dominika Wcisło-Dziadecka
Civilizational progress initially contributes to the problem of hair loss and then to alopecia as regards both frequency and therapeutic dilemmas. The work presents trichological problems which occur more rarely, i.e. drug-induced, anagen and telogen alopecia, congenital and acquired structural hair disorders, psychic disturbances concerning the hair as well as the hair during menopause. Then, the article briefly describes contagious (infectious) diseases as well as diseases with inflammatory etiology which are accompanied by exfoliation and (frequently) pruritus...
October 2016: Postȩpy Dermatologii i Alergologii
https://www.readbyqxmd.com/read/27864971/proximal-end-root-morphology-characteristics-in-antemortem-anagen-head-hairs
#2
Katherine A Roberts, Lino R Garcia, Peter R De Forest
The proximal end morphology of antemortem anagen head hair was compared with the characteristics documented to occur in postmortem hairs. Antemortem anagen and telogen head hairs (N = 967) were recovered following exposure to seven environments. Root morphology characteristics consistent with those reported in postmortem hairs were observed in 66 (14%) hairs exposed to a water, normal saline, outdoor soil, or indoor shower environment. Thirty-three anagen hairs (7%) exhibited a root band at the proximal end...
November 16, 2016: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/27843921/telogen-effluvium-is-there-a-need-for-a-new-classification
#3
EDITORIAL
Ralph M Trüeb
No abstract text is available yet for this article.
September 2016: Skin Appendage Disorders
https://www.readbyqxmd.com/read/27843920/proposing-a-simpler-classification-of-telogen-effluvium
#4
REVIEW
Alfredo Rebora
Telogen effluvium (TE) is a pathogenically heterogeneous condition which so far has been classified into acute and chronic forms - or, according to Headington, into 5 different pathogenetic forms. Regrettably, Headington's classification is difficult to apply in the office, and most papers dealing with TE ignore it. The present review intends to propose a novel classification of TE and to introduce, tentatively, a new variety of TE. Three pathogenetic types of TE can be identified, whose common clinical element is the profuse shedding of hairs: (1) premature teloptosis, (2) collective teloptosis, and (3) premature entry into the telogen phase...
September 2016: Skin Appendage Disorders
https://www.readbyqxmd.com/read/27772548/jak-stat-signaling-jump-starts-the-hair-cycle
#5
Etienne Wang, Sivan Harel, Angela M Christiano
Legrand et al show that JAK/STAT5 signaling in the dermal papilla is required for anagen onset in the murine hair cycle. Interestingly, others have shown that JAK-inhibition is able to induce telogen-to-anagen transition in wild-type mice. This apparent contradiction highlights the complexity of interactions within the hair follicle, and encourages further discussion on the role of JAK-STAT signaling in the various stem cell niches of the hair follicle.
November 2016: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/27754706/transcriptome-wide-comparative-analysis-of-microrna-profiles-in-the-telogen-skins-of-liaoning-cashmere-goats-capra-hircus-and-fine-wool-sheep-ovis-aries-by-solexa-deep-sequencing
#6
Jianping Li, HaiE Qu, Huaizhi Jiang, Zhihui Zhao, Qiaoling Zhang
Compare the microRNA (miRNA) trancriptomes of goat and sheep skin using Solexa sequencing to understand the development of skin and hair follicles (HFs). miRNA expression patterns vary in the two small RNA libraries from goat (G library) and sheep (S library) telogen skin samples. Analysis of the size distribution of 25.32 million clean reads revealed that most are 21-23 nucleotides. A total of 1910 known miRNAs and 2261 novel mature miRNAs were identified in this study. Among them, 107 novel miRNAs and 1246 known miRNAs were differentially expressed in the two libraries; 10 of the known miRNAs were identified using stem-loop quantitative real-time PCR...
October 18, 2016: DNA and Cell Biology
https://www.readbyqxmd.com/read/27747798/traditional-anticoagulants-and-hair-loss-a-role-for-direct-oral-anticoagulants-a-review-of-the-literature
#7
Magdalena M Watras, Jignesh P Patel, Roopen Arya
Hair loss is associated with the anticoagulants heparin and warfarin. With the recent availability of direct oral anticoagulants (DOACs) it is of clinical interest to know if they are implicated with hair loss and/or whether they could be successfully prescribed for patients who suffer from coumarin- or heparin-related alopecia. Initially reports of heparin- and coumarin-associated alopecia available through PubMed and Medline were explored in order to establish the cause of this side effect. Currently there is a lack of unanimity on why anticoagulants cause alopecia...
March 2016: Drugs—Real World Outcomes
https://www.readbyqxmd.com/read/27741341/vitamin-and-mineral-deficiencies-in-patients-with-telogen-effluvium-a-retrospective-cross-sectional-study
#8
Evelyn J Cheung, Jacquelyn R Sink, Joseph C English Iii
Telogen effluvium is one of the most common forms of non-scarring alopecia for which patients present to a dermatologist. It is a challenging disorder to treat and study, primarily owing to its multifactorial etiology which includes both physiologic and non-physiologic factors. Nutritional deficiency has been purported to contribute to hair shedding, and a patient's clinical history usually aids in directing laboratory evaluation. Many prior studies have either supported or failed to find a correlation between telogen effluvium and deficiencies in vitamins and minerals, in particular, vitamin D, ferritin, vitamin B12, folate, and zinc...
October 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/27715423/regeneration-of-murine-hair-follicles-is-inhibited-by-low-dose-rate-gamma-irradiation
#9
Kimihiko Sugaya, Tomohisa Hirobe, Yoshie Ishihara, Sonoe Inoue
To determine whether the effects of low-dose-rate gamma (γ) irradiation are identifiable in the regeneration of murine hair follicles, we irradiated whole bodies of C57BL/10JHir mice in the first telogen phase of the hair cycle with (137)Cs γ-rays. The mice were examined for effects on hair follicles, including number, morphology, and pigmentation in the second anagen phase. Effects of γ-radiation on melanocyte stem cells were also investigated by the indirect immunolabeling of tyrosinase-related protein 2 (TRP2)...
October 2016: Zoological Science
https://www.readbyqxmd.com/read/27673387/eccrine-duct-dilation-as-a-marker-of-cicatricial-alopecia
#10
Timothy Tan, Joan Guitart, Pedram Gerami, Pedram Yazdan
BACKGROUND: Eccrine duct dilation (EDD) and syringoma-like sweat duct proliferation have been described as reactive changes occurring in a variety of skin conditions. However, extensive evaluation of EDD in scalp biopsies performed for alopecia has not been performed. METHODS: We retrospectively examined 129 cases of cicatricial alopecia (lichen planopilaris, central centrifugal cicatricial alopecia, and discoid lupus erythematosus) and 130 cases of noncicatricial alopecias (androgenetic alopecia, telogen effluvium, and alopecia areata) for the presence of EDD...
September 26, 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27671426/apoptosis-may-explain-the-pharmacological-mode-of-action-and-adverse-effects-of-isotretinoin-including-teratogenicity
#11
Bodo C Melnik
Isotretinoin (13-cis retinoic acid) is the most effective sebum-suppressive drug for the treatment of severe acne. Its effect depends on sebocyte apoptosis, which results from isotretinoin-induced expression of the apoptotic protein tumour necrosis factor-related apoptosis-inducing ligand, insulin-like growth factor-binding protein-3 and neutrophil gelatinase-associated lipocalin. This review proposes that the pharmacological mode of action of isotretinoin in the treatment of severe acne, acute promyelocytic leukaemia, and neuroblastoma results from apoptosis...
September 27, 2016: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/27641957/single-cell-transcriptomics-reveals-that-differentiation-and-spatial-signatures-shape-epidermal-and-hair-follicle-heterogeneity
#12
Simon Joost, Amit Zeisel, Tina Jacob, Xiaoyan Sun, Gioele La Manno, Peter Lönnerberg, Sten Linnarsson, Maria Kasper
The murine epidermis with its hair follicles represents an invaluable model system for tissue regeneration and stem cell research. Here we used single-cell RNA-sequencing to reveal how cellular heterogeneity of murine telogen epidermis is tuned at the transcriptional level. Unbiased clustering of 1,422 single-cell transcriptomes revealed 25 distinct populations of interfollicular and follicular epidermal cells. Our data allowed the reconstruction of gene expression programs during epidermal differentiation and along the proximal-distal axis of the hair follicle at unprecedented resolution...
September 28, 2016: Cell Systems
https://www.readbyqxmd.com/read/27625562/a-comparison-of-vertical-and-transverse-sections-in-the-histological-diagnosis-of-alopecia-areata-scalp-biopsy-specimens
#13
Kanika Singh, Sonal Sharma, Usha Rani Singh, Sambit Nath Bhattacharya
CONTEXT: Both vertical and transverse sections are used for the diagnosis of alopecia areata. However when a single biopsy is submitted the pathologist has to decide which type is better. AIMS: To compare the diagnostic histological features in vertical and transverse sections in alopecia areata scalp biopsy specimens. SETTINGS AND DESIGN: Tertiary Care Hospital. Comparative Study. MATERIALS AND METHODS: A total of 30 patients were enrolled in the study...
July 2016: International Journal of Trichology
https://www.readbyqxmd.com/read/27617515/hormones-and-clocks-do-they-disrupt-the-locks-fluctuating-estrogen-levels-during-menopausal-transition-may-influence-clock-genes-and-trigger-chronic-telogen-effluvium
#14
Paradi Mirmirani
Chronic telogen effluvium describes the clinical condition noted mostly in middle-aged women of increased, diffuse scalp hair shedding that is prolonged and often presents with a fluctuating course that may continue for years but does not lead to visible hair thinning. Despite its description almost 20 years ago, the underlying pathologic cause of CTE is yet to be identified. However the culmination of research in the field of hair biology and the burgeoning field of chronobiology may lead to exciting breakthroughs in our understanding of CTE...
2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/27613297/dermoscopy-in-general-dermatology-a-practical-overview
#15
REVIEW
Enzo Errichetti, Giuseppe Stinco
Over the last few years, dermoscopy has been shown to be a useful tool in assisting the noninvasive diagnosis of various general dermatological disorders. In this article, we sought to provide an up-to-date practical overview on the use of dermoscopy in general dermatology by analysing the dermoscopic differential diagnosis of relatively common dermatological disorders grouped according to their clinical presentation, i.e. dermatoses presenting with erythematous-desquamative patches/plaques (plaque psoriasis, eczematous dermatitis, pityriasis rosea, mycosis fungoides and subacute cutaneous lupus erythematosus), papulosquamous/papulokeratotic dermatoses (lichen planus, pityriasis rosea, papulosquamous sarcoidosis, guttate psoriasis, pityriasis lichenoides chronica, classical pityriasis rubra pilaris, porokeratosis, lymphomatoid papulosis, papulosquamous chronic GVHD, parakeratosis variegata, Grover disease, Darier disease and BRAF-inhibitor-induced acantholytic dyskeratosis), facial inflammatory skin diseases (rosacea, seborrheic dermatitis, discoid lupus erythematosus, sarcoidosis, cutaneous leishmaniasis, lupus vulgaris, granuloma faciale and demodicidosis), acquired keratodermas (chronic hand eczema, palmar psoriasis, keratoderma due to mycosis fungoides, keratoderma resulting from pityriasis rubra pilaris, tinea manuum, palmar lichen planus and aquagenic palmar keratoderma), sclero-atrophic dermatoses (necrobiosis lipoidica, morphea and cutaneous lichen sclerosus), hypopigmented macular diseases (extragenital guttate lichen sclerosus, achromic pityriasis versicolor, guttate vitiligo, idiopathic guttate hypomelanosis, progressive macular hypomelanosis and postinflammatory hypopigmentations), hyperpigmented maculopapular diseases (pityriasis versicolor, lichen planus pigmentosus, Gougerot-Carteaud syndrome, Dowling-Degos disease, erythema ab igne, macular amyloidosis, lichen amyloidosus, friction melanosis, terra firma-forme dermatosis, urticaria pigmentosa and telangiectasia macularis eruptiva perstans), itchy papulonodular dermatoses (hypertrophic lichen planus, prurigo nodularis, nodular scabies and acquired perforating dermatosis), erythrodermas (due to psoriasis, atopic dermatitis, mycosis fungoides, pityriasis rubra pilaris and scabies), noninfectious balanitis (Zoon's plasma cell balanitis, psoriatic balanitis, seborrheic dermatitis and non-specific balanitis) and erythroplasia of Queyrat, inflammatory cicatricial alopecias (scalp discoid lupus erythematosus, lichen planopilaris, frontal fibrosing alopecia and folliculitis decalvans), nonscarring alopecias (alopecia areata, trichotillomania, androgenetic alopecia and telogen effluvium) and scaling disorders of the scalp (tinea capitis, scalp psoriasis, seborrheic dermatitis and pityriasis amiantacea)...
December 2016: Dermatology and Therapy
https://www.readbyqxmd.com/read/27604415/two-cases-of-feline-paraneoplastic-alopecia-associated-with-a-neuroendocrine-pancreatic-neoplasia-and-a-hepatosplenic-plasma-cell-tumour
#16
Chiara Caporali, Francesco Albanese, Diana Binanti, Francesca Abramo
BACKGROUND: Feline paraneoplastic alopecia (FPA) is a rare condition listed among the cutaneous paraneoplastic syndromes, which occurs in association with pancreatic carcinoma, cholangiocarcinoma, hepatocellular carcinoma and metastatic intestinal carcinoma. OBJECTIVES: To describe the clinicopathological findings of paraneoplastic alopecia in two cats each with an uncommon tumour not previously reported in association with FPA. ANIMALS: Paraneoplastic alopecia was associated with neuroendocrine pancreatic neoplasia in a Persian cat and with a hepatosplenic plasma cell tumour in a domestic short hair cat...
December 2016: Veterinary Dermatology
https://www.readbyqxmd.com/read/27601860/serum-biotin-levels-in-women-complaining-of-hair-loss
#17
Ralph M Trüeb
Biotin is a coenzyme for carboxylase enzymes that assist various metabolic reactions involved in fatty acid synthesis, branched-chain amino acid catabolism, and gluconeogenesis important for maintenance of healthy skin and hair. Due to its availability, affordability, and effective marketing for this purpose, biotin is a popular nutritional supplement for treatment of hair loss. However, there are little data on the frequency of biotin deficiency in patients complaining of hair loss and on the value of oral biotin for treatment of hair loss that is not due to an inborn error of biotin metabolism or deficiency...
April 2016: International Journal of Trichology
https://www.readbyqxmd.com/read/27601857/female-pattern-hair-loss-a-retrospective-study-in-a-tertiary-referral-center
#18
Tee Wei Siah, Llorenia Muir-Green, Jerry Shapiro
BACKGROUND: Female pattern hair loss (FPHL) is a very common problem in women. The underlying pathophysiology remains unclear, and there are no universally agreed treatment guidelines. OBJECTIVE: We explored the clinical features, relevant medical and family history, laboratory evaluation, and treatment and compliance of 210 patients with FPHL. METHODS: Data analysis from case notes was performed on 210 patients with a diagnosis of FPHL seen from January 2011 to December 2011...
April 2016: International Journal of Trichology
https://www.readbyqxmd.com/read/27502755/-atypical-scurvy-associated-with-anorexia-nervosa
#19
R André, A Gabrielli, E Laffitte, O Kherad
INTRODUCTION: Scurvy, or "Barlow's disease", is a widely described disease involving cutaneous and mucosal lesions resulting from vitamin C deficiency. Herein, we report a case of scurvy in a 48-year-old woman that was unusual in its atypical cutaneous-mucosal presentation as well as its association with anorexia nervosa. PATIENTS AND METHODS: A 48-year-old woman treated for depression for several years was admitted to hospital for her impaired general state of health...
August 5, 2016: Annales de Dermatologie et de Vénéréologie
https://www.readbyqxmd.com/read/27499692/wnt5a-suppresses-%C3%AE-catenin-signaling-during-hair-follicle-regeneration
#20
Yizhan Xing, Xiaogen Ma, Haiying Guo, Fang Deng, Jin Yang, Yuhong Li
Hair follicles display periodic growth. Wnt signaling is a critical regulator for hair follicle regeneration. Previously, we reported that Wnt5a inhibits the telogen-to-anagen transition of hair follicles, but the mechanism by which this process occurs has not yet been reported. Here, we determined the expression patterns of Wnt signaling pathway molecules by quantitative reverse transcription polymerase chain reaction, western blot, and immunohistochemistry and found that β-catenin signaling was suppressed by Wnt5a...
2016: International Journal of Medical Sciences
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