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https://www.readbyqxmd.com/read/29320989/expression-of-vimentin-in-hair-follicle-growth-cycle-of-inner-mongolian-cashmere-goats
#1
Nai Rile, Zhihong Liu, Lixia Gao, Jingkai Qi, Meng Zhao, Yuchun Xie, Rui Su, Yanjun Zhang, Ruijun Wang, Jie Li, Hongmei Xiao, Jinquan Li
BACKGROUND: The growth of Inner Mongolian Cashmere goat skin hair follicle exhibits a periodic growth pattern. The hair growth cycle is distinguished as telogen, anagen, and catagen stages. The role of vimentin in the growth process of hair follicles is evident. To elucidate the mechanism underlying the vimentin activity in the growth cycle of hair follicles, transcriptome sequencing and liquid chromatography-tandem mass spectrometry were used to obtain the nucleic acid and amino acid sequences of VIIM gene and vimentin...
January 10, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29319278/the-use-of-minoxidil-in-the-treatment-of-male-and-female-androgenetic-alopecia-a-story-of-more-than-30-years
#2
Mauro Barbareschi
Even if minoxidil has been known for over 30 years as "hair growth stimulator" the precise mechanism of its action is not completely elucitated. Minoxidil shortens telogen, accelerates telogen-exogen phase and causes the premature entry of resting hair follicles into anagen phase. Moreover, minoxidil increases hair follicle size. A large part of hair treatment scientific literature confirms the efficacy of topically applied minoxidil in humans. In particular, patients treated with minoxidil showed a significant increase in "non vellus" hair count starting from baseline...
February 2018: Giornale Italiano di Dermatologia e Venereologia: Organo Ufficiale, Società Italiana di Dermatologia e Sifilografia
https://www.readbyqxmd.com/read/29234716/physiologic-changes-of-pregnancy-a-review-of-the-literature
#3
REVIEW
Catherine C Motosko, Amy Kalowitz Bieber, Miriam Keltz Pomeranz, Jennifer A Stein, Kathryn J Martires
Throughout pregnancy, the body undergoes a variety of physiologic changes. The cutaneous findings can be most noticeable and often worrisome to both physicians and patients. Obstetricians and dermatologists must be able to differentiate between changes that are benign and those that may be pathologic. Most physicians recognize benign changes that are commonly described in literature such as hyperpigmentation, melasma, striae gravidarum, and telogen effluvium; however, they may be unaware of changes that tend to be less frequently discussed...
December 2017: International Journal of Women's Dermatology
https://www.readbyqxmd.com/read/29215595/the-role-of-vitamin-d-in-non-scarring-alopecia
#4
REVIEW
Agnieszka Gerkowicz, Katarzyna Chyl-Surdacka, Dorota Krasowska, Grażyna Chodorowska
Non-scarring hair loss is a common problem that affects both male and female patients. Since any disturbances in the hair follicle cycle may lead to hair shedding, or alopecia, it is not surprising that the possible role of vitamin D in alopecia was investigated in many studies. Vitamin D has been shown to have many important functions. A growing body of evidence shows that vitamin D and its receptor are responsible for maintaining not only calcium homeostasis but also skin homeostasis. Moreover, vitamin D could also regulate cutaneous innate and adaptive immunity...
December 7, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29204389/platelet-rich-plasma-by-single-spin-process-in-male-pattern-androgenetic-alopecia-is-it-an-effective-treatment
#5
Azin Ayatollahi, Hamed Hosseini, Majid Shahdi, Saman AhmadNasrollahi, Mansour NassiriKashani, Somaye Yadangi, Farid H Firooz, Alireza Firooz
Introduction and Objective: Platelet-rich plasma (PRP) is an autologous preparation of platelets in concentrated plasma. The platelet is a natural source of different growth factors and cytokines. These growth factors act on stem cells in the bulge area of the follicles and stimulate the development of new follicles, and promote neovascularization. The aim of this study was to investigate the efficacy and safety of PRP injections in androgenetic alopecia (AGA) in men. Patients and Methods: Fifteen male patients (mean age: 39 ± 9...
November 2017: Indian Dermatology Online Journal
https://www.readbyqxmd.com/read/29177154/syphilitic-alopecia-case-reports-and-trichoscopic-findings
#6
Isabella Doche, Maria K Hordinsky, Neusa Y S Valente, Ricardo Romiti, Antonella Tosti
There has been a resurgence of syphilis in the last decade. Although alopecia is not a common manifestation of the disease, the "moth-eaten" pattern is considered patognomonic. However, diffuse hair loss, termed essential alopecia, sometimes can be the only sign of syphilis infection and mimic other conditions, such as alopecia areata and telogen effluvium. We describe three patients with syphilis in whom the pattern of alopecia was not typical. Although clinical, histopathological, and trichoscopic examinations may share some similar findings with other hair diseases, the inclusion of syphilis in the differential diagnosis of hair loss causes is fundamental to a correct screening and diagnosis...
October 2017: Skin Appendage Disorders
https://www.readbyqxmd.com/read/29177147/exogen-hairs-in-women-with-and-without-hair-loss
#7
Marcella Guarrera, Alfredo Rebora
Contrary to the classical view of the hair cycle, in which telogen is the resting phase that precedes the release of the hair shaft, another phase has been introduced, exogen. Exogen is the phase wherein the processes for the release of the hair shaft are initiated and successfully executed. Exogen ends when the shaft is liberated. Accordingly, human hairs would be preferably released not with telogen but with exogen roots. To better understand this somehow revolutionary point and what occurs in telogen effluvium (TE) and in androgenetic alopecia (AGA), we undertook a morphological study...
October 2017: Skin Appendage Disorders
https://www.readbyqxmd.com/read/29174869/expression-characteristics-of-bmp2-bmpr-ia-and-noggin-in-different-stages-of-hair-follicle-in-yak-skin
#8
Liang-Li Song, Yan Cui, Si-Jiu Yu, Peng-Gang Liu, Jun Liu, Xue Yang, Jun-Feng He, Qian Zhang
Bone morphogenetic protein 2 (BMP2), BMP receptor-IA (BMPR-IA), and the BMP2 antagonist Noggin are important proteins involved in regulating the hair follicle (HF) cycle in skin. In order to explore the expression profiles of BMP2, BMPR-IA, and Noggin in the HF cycle of yak skin, we collected adult yak skin in the telogen, proanagen, and midanagen phases of HFs and evaluated gene and protein expression by real-time quantitative polymerase chain reaction (qRT-PCR), western blotting, and immunohistochemistry...
November 22, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29167734/treatment-of-chronic-telogen-effluvium-with-oral-minoxidil-a-retrospective-study
#9
Eshini Perera, Rodney Sinclair
Background: Chronic telogen effluvium (CTE) may be primary or secondary to various causes, including drug reaction, nutritional deficiency and female pattern hair loss (FPHL).  Oral minoxidil stimulates hair growth, and topical minoxidil is used in the treatment of FPHL and male androgenetic alopecia. minoxidil has not been used to treat CTE. This study aimed to assess the treatment of CTE with once daily oral minoxidil. Methods: Women with a diagnosis of CTE based on >6 month history of increased telogen hair shedding, no visible mid frontal scalp hair loss (Sinclair stage 1) and no hair follicle miniaturization on scalp biopsy were treated with once daily oral minoxidil...
2017: F1000Research
https://www.readbyqxmd.com/read/29157820/nymphaeol-c-a-prenylflavonoid-from-macaranga-tanarius-suppresses-the-expression-of-fibroblast-growth-factor-18
#10
Kazuki Yoshimura, Takahiro Hosoya, Misa Fujinami, Toshiro Ohta, Shigenori Kumazawa
BACKGROUND: Fibroblast growth factor 18 (FGF18) is one of the key factors in human signaling pathways and has been reported to be associated with the formation of various tissues. Additionally, FGF18 has been reported to maintain the telogen stage of the hair cycle, and its over-expression has also been observed in cancer cells. HYPOTHESIS/PURPOSE: We searched for natural compounds that inhibit the expression of FGF18 expression in vitro and evaluated their inhibitory mechanisms...
December 1, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29149771/hoxc13-and-hsp27-expression-in-skin-and-the-periodic-growth-of-secondary-fiber-follicles-from-longdong-cashmere-goats-raised-in-different-production-systems
#11
Jiqing Wang, Ping Yu, Haifang Wang, Yanyu He
This experiment was conducted to identify periodic changes in secondary follicles (SFs) over one year of extensive (grazed) and intensive (housed and fed supplement) farming of Longdong cashmere goats. One-year old goats (n = 24, 12 extensively fed and 12 intensively fed) were studied. The diameter, depth, density, activity, and ultra-structural features of SFs were assessed using light microscopy and transmission electron microscopy (TEM). HOXC13 and HSP27 expression were studied using immunohistochemistry and immunofluorescence method...
November 17, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29138430/extracellular-vesicles-derived-from-mscs-activates-dermal-papilla-cell-in-vitro-and-promotes-hair-follicle-conversion-from-telogen-to-anagen-in-mice
#12
Ramya Lakshmi Rajendran, Prakash Gangadaran, Soon Sun Bak, Ji Min Oh, Senthilkumar Kalimuthu, Ho Won Lee, Se Hwan Baek, Liya Zhu, Young Kwan Sung, Shin Young Jeong, Sang-Woo Lee, Jaetae Lee, Byeong-Cheol Ahn
Hair loss is a common medical problem. In this study, we investigated the proliferation, migration, and growth factor expression of human dermal papilla (DP) cells in the presence or absence of treatment with mesenchymal stem cell extracellular vesicles (MSC-EVs). In addition, we tested the efficacy of MSC-EV treatment on hair growth in an animal model. MSC-EV treatment increased DP cell proliferation and migration, and elevated the levels of Bcl-2, phosphorylated Akt and ERK. In addition; DP cells treated with MSC-EVs displayed increased expression and secretion of VEGF and IGF-1...
November 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29118523/three-cases-of-hair-loss-analyzed-by-the-point-of-view-of-the-analytical-psychology
#13
Ademir Carvalho Leite Júnior, Tatiele Katzer, Denise Gimenez Ramos
Psychotrichology is the science, which covers the psychosomatics applied to hair problems, i.e., body-psyche phenomena involving scalp and hair disorders. The approaches involving psychotricology are varied and may include psychiatric,[1] psychoanalytical,[23] and those involving knowledge related to analytical psychology.[4] An analysis from the analytical psychology point of view, a theory developed by the physician Carl Gustav Jung, favors a symbolic view to the disease, providing it attributions and meanings that go beyond those related to physical body signs and symptoms only...
October 2017: International Journal of Trichology
https://www.readbyqxmd.com/read/29065140/novel-insights-into-the-pathways-regulating-the-canine-hair-cycle-and-their-deregulation-in-alopecia-x
#14
Magdalena A T Brunner, Vidhya Jagannathan, Dominik P Waluk, Petra Roosje, Monika Linek, Lucia Panakova, Tosso Leeb, Dominique J Wiener, Monika M Welle
Alopecia X is a hair cycle arrest disorder in Pomeranians. Histologically, kenogen and telogen hair follicles predominate, whereas anagen follicles are sparse. The induction of anagen relies on the activation of hair follicle stem cells and their subsequent proliferation and differentiation. Stem cell function depends on finely tuned interactions of signaling molecules and transcription factors, which are not well defined in dogs. We performed transcriptome profiling on skin biopsies to analyze altered molecular pathways in alopecia X...
2017: PloS One
https://www.readbyqxmd.com/read/29061525/characterization-of-a-new-inducible-transgenic-mouse-model-with-gfp-expression-in-melanocytes-and-their-precursors
#15
Sandeep S Joshi, Bishal Tandukar, Maira Castaneda, Shunlin Jiang, Ganesh Diwakar, Ronna P Hertzano, Thomas J Hornyak
Melanocytes are neural crest-derived cells that are responsible for mammalian hair follicle (HF) pigmentation. The Dct-LacZ transgenic mouse is extensively used to study melanocyte biology but lacks conditionally-inducible labelling and fluorescent labelling, enabling specific, viable isolation of melanocytes using fluorescence-activated cell sorting (FACS). Here, we have generated a Tet-off bitransgenic mouse model, Dct-H2BGFP, containing Dct-tTA and TRE-H2BGFP transgenes. Characterization of Dct-H2BGFP mice confirmed a pattern of Dct-H2BGFP expression in melanoblasts, melanocyte stem cells (McSCs), and terminally differentiated melanocytes similar to the expression pattern of previously published mouse models Dct-LacZ and iDct-GFP...
October 21, 2017: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/29054756/a-lncrna-h19-transcript-from-secondary-hair-follicle-of-liaoning-cashmere-goat-identification-regulatory-network-and-expression-regulated-potentially-by-its-promoter-methylation
#16
Yu B Zhu, Ze Y Wang, Rong H Yin, Qian Jiao, Su J Zhao, Yu Y Cong, Hui L Xue, Dan Guo, Shi Q Wang, Yan X Zhu, Wen L Bai
The H19 transcript (imprinted maternally expressed transcript) is well-known as long noncoding RNA (lncRNA), and it is thought to be associated with the inductive capacity of dermal papilla cells for hair-follicle reconstruction. In this study, we isolated and characterized a lncRNA-H19 transcript from the secondary hair follicle of Liaoning cashmere goat. Also, we investigated its transcriptional pattern and methylation status of H19 gene in secondary hair follicle of this breed during different stages of hair follicle cycle...
October 17, 2017: Gene
https://www.readbyqxmd.com/read/29050206/wnt-%C3%AE-catenin-signaling-promotes-aging-associated-hair-graying-in-mice
#17
Zhihui Zhang, Mingxing Lei, Haoran Xin, Chunyan Hu, Tian Yang, Yizhan Xing, Yuhong Li, Haiying Guo, Xiaohua Lian, Fang Deng
Canities is an obvious sign of aging in mouse and human, shown as hair graying. Melanocytes in the hair follicle show cyclic activity with hair cycling, which transitions from anagen, catagen to telogen. How the hairs turn gray during aging is not completely uncovered. Here, by using immunostaining and LacZ staining in Dct-LacZ mice, we show that β-catenin is expressed in melanocytes during hair cycling. RT-PCR, western blot and immunostaining show that β-catenin expression is significantly increased in both anagen and telogen skin of aged mice, when compared to the anagen and telogen skin of young mice, respectively...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29020916/integrated-analysis-of-coding-genes-and-non-coding-rnas-during-hair-follicle-cycle-of-cashmere-goat-capra-hircus
#18
Shanhe Wang, Wei Ge, Zhixin Luo, Yang Guo, Beilei Jiao, Lei Qu, Zhiying Zhang, Xin Wang
BACKGROUND: Cashmere growth is a seasonal and cyclic phenomenon under the control of photoperiod and multiple stimulatory and inhibitory signals. Beyond relevant coding genes, microRNA (miRNA) and long non coding RNA (lncRNA) play an indispensable role in hair follicle (HF) development and skin homeostasis. Furthermore, the influence of lncRNA upon miRNA function is also rapidly emerging. However, little is known about miRNAs, lncRNAs and their functions as well as their interactions on cashmere development and cycling...
October 11, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29017840/focal-atrichia-a-diagnostic-clue-in-female-pattern-hair-loss
#19
Elise A Olsen, David A Whiting
BACKGROUND: Focal atrichia is a common clinical finding in female pattern hair loss whose specificity and histologic findings need further clarification. OBJECTIVE: To determine the frequency of focal atrichia in various types of hair loss and its histologic characteristics in female pattern hair loss. METHODS: Part 1: Review of 250 consecutive female patients seen with hair loss for the presence of focal atrichia and Part 2: paired biopsies of haired areas vs focal atrichia in 18 subjects with female pattern hair loss RESULTS: Focal atrichia was seen in 46/104 (44%) of women with female pattern hair loss, including 67% of late onset vs 15% of early onset, compared to 3/146 (2%) of those with other hair disorders Biopsy findings of focal atrichia in female pattern hair loss showed primarily a more progressive miniaturization process than that of haired areas of the scalp...
October 7, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28992198/analysing-the-dynamics-of-a-model-for-alopecia-areata-as-an-autoimmune-disorder-of-hair-follicle-cycling
#20
Atanaska Dobreva, Ralf Paus, N G Cogan
Alopecia areata (AA) is a CD8$^{+}$ T cell-dependent autoimmune disease that disrupts the constantly repeating cyclic transformations of hair follicles (HFs). Among the three main HF cycle stages-growth (anagen), regression (catagen) and relative quiescence (telogen)-only anagen HFs are attacked and thereby forced to prematurely enter into catagen, thus shortening active hair growth substantially. After having previously modelled the dynamics of immune system components critically involved in the disease development (Dobreva et al...
August 7, 2017: Mathematical Medicine and Biology: a Journal of the IMA
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