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https://www.readbyqxmd.com/read/28341954/reversible-alopecia-with-localized-scalp-necrosis-after-accidental-embolization-of-the-parietal-artery-with-hyaluronic-acid
#1
Qing Yang, Lihong Qiu, Chenggang Yi, Ping Xue, Zhou Yu, Xianjie Ma, Yingjun Su, Shuzhong Guo
Hyaluronic acid (HA) filler injection is widely used for soft-tissue augmentation. Complications associated with HA filling are not uncommon; however, HA-induced alopecia is a rarely reported complication that could result in severe secondary psychological trauma. The etiology, clinical traits, treatment strategies, outcomes, and possible reversibility of HA-induced alopecia have not been characterized. Here, we report a case in which bilateral temple injections of 6.5 mL of HA led to persistent pain over the left scalp for several days...
March 24, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28296142/plated-rich-plasma-for-androgenetic-alopecia-does-it-work-evidence-from-meta-analysis
#2
REVIEW
Salvatore Giordano, Marco Romeo, Petteri Lankinen
INTRODUCTION: The use of plated-rich plasma (PRP) has increased among different surgical specialities for the treatment of various conditions. Androgenetic alopecia is a common condition, with severe attendant psychosocial implications. PRP injections for hair restoration have become a popular practice among plastic surgeons. We performed a meta-analysis comparing local injection of plated-rich plasma versus control to evaluate this issue in order to investigate the effectiveness of PRP local injections for androgenetic alopecia...
March 13, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/28290603/fenofibrate-exerts-protective-effects-against-gentamicin-induced-toxicity-in-cochlear-hair-cells-by-activating-antioxidant-enzymes
#3
Channy Park, Hye-Min Ji, Se-Jin Kim, Sung-Hee Kil, Joon No Lee, Seongae Kwak, Seong-Kyu Choe, Raekil Park
Fenofibrate, an activator of peroxisome proliferator-activated receptors (PPARs), has been shown to protect the kidneys and brain cells from oxidative stress; however, its role in preventing hearing loss has not been reported to date, at least to the best of our knowledge. In this study, we demonstrated the protective effects of fenofibrate against gentamicin (GM)-induced ototoxicity. We found that the auditory brainstem response threshold which was increased by GM was significantly reduced by pre-treatment with fenofibrate in rats...
March 10, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28263708/supporting-cells-remove-and-replace-sensory-receptor-hair-cells-in-a-balance-organ-of-adult-mice
#4
Stephanie A Bucks, Brandon C Cox, Brittany A Vlosich, James P Manning, Tot B Nguyen, Jennifer S Stone
Vestibular hair cells in the inner ear encode head movements and mediate the sense of balance. These cells undergo cell death and replacement (turnover) throughout life in non-mammalian vertebrates. However, there is no definitive evidence that this process occurs in mammals. We used fate-mapping and other methods to demonstrate that utricular type II vestibular hair cells undergo turnover in adult mice under normal conditions. We found that supporting cells phagocytose both type I and II hair cells. Plp1-CreER(T2)-expressing supporting cells replace type II hair cells...
March 6, 2017: ELife
https://www.readbyqxmd.com/read/28254438/gene-therapy-restores-balance-and-auditory-functions-in-a-mouse-model-of-usher-syndrome
#5
Kevin Isgrig, Jack W Shteamer, Inna A Belyantseva, Meghan C Drummond, Tracy S Fitzgerald, Sarath Vijayakumar, Sherri M Jones, Andrew J Griffith, Thomas B Friedman, Lisa L Cunningham, Wade W Chien
Dizziness and hearing loss are among the most common disabilities. Many forms of hereditary balance and hearing disorders are caused by abnormal development of stereocilia, mechanosensory organelles on the apical surface of hair cells in the inner ear. The deaf whirler mouse, a model of human Usher syndrome (manifested by hearing loss, dizziness, and blindness), has a recessive mutation in the whirlin gene, which renders hair cell stereocilia short and dysfunctional. In this study, wild-type whirlin cDNA was delivered to the inner ears of neonatal whirler mice using adeno-associated virus serotype 2/8 (AAV8-whirlin) by injection into the posterior semicircular canal...
March 1, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28245737/hearing-disorders-in-cats
#6
George M Strain
Practical relevance: Auditory function is a sense that is central to life for cats - being important in situational awareness of potential predators, pursuit of prey, and for communication with conspecifics, humans and other species. Deafness in cats is most frequently the result of a genetic disorder, strongly associated with white fur and blue eyes, but may also result from acquired causes such as advancing age, ototoxic drugs, infection, environmental noise and physical trauma. Deafness can be sensorineural, where there is loss of cochlear hair cells, or conductive, where sound is muffled on its way to the inner ear...
March 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/28221183/the-effect-of-plasma-rich-in-growth-factors-on-pattern-hair-loss-a-pilot-study
#7
Eduardo Anitua, Ander Pino, Nahikari Martinez, Gorka Orive, Daniel Berridi
BACKGROUND: Autologous growth factors have proved to promote tissue regeneration in various medical fields. Recent findings suggest that platelet rich plasma may also play an important role in hair follicle restoration. OBJECTIVE: The objective of this study was to evaluate the safety and clinical efficacy of plasma rich in growth factors (PRGFs) for the treatment of androgenetic alopecia (AGA). MATERIALS AND METHODS: Five PRGF injections were administered over 19 patients with AGA...
February 17, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28194644/ionizing-radiation-blocks-hair-cell-regeneration-in-zebrafish-lateral-line-neuromasts-by-preventing-wnt-signaling
#8
Rong Li, Guixiang Liao, Guo Yin, Baiyao Wang, Miaohong Yan, Xiaoshan Lin, Wenqing Zhang, Xiaohui Chen, Shasha Du, Yawei Yuan
Loss of hair cells occurs after radiotherapy, which is a major treatment modality for head and neck cancers. In the lateral line neuromasts of zebrafish, hair cells regenerate rapidly from supporting cells after damage from ototoxins. To investigate hair cell regeneration after radiation damage, zebrafish larvae were exposed to radiation, and hair cells were counted and cell proliferation was detected in neuromasts. After irradiation exposure, cell proliferation was inhibited in neuromasts and the number of supporting cells remained stable...
February 13, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28165476/gene-therapy-restores-auditory-and-vestibular-function-in-a-mouse-model-of-usher-syndrome-type-1c
#9
Bifeng Pan, Charles Askew, Alice Galvin, Selena Heman-Ackah, Yukako Asai, Artur A Indzhykulian, Francine M Jodelka, Michelle L Hastings, Jennifer J Lentz, Luk H Vandenberghe, Jeffrey R Holt, Gwenaëlle S Géléoc
Because there are currently no biological treatments for hearing loss, we sought to advance gene therapy approaches to treat genetic deafness. We focused on Usher syndrome, a devastating genetic disorder that causes blindness, balance disorders and profound deafness, and studied a knock-in mouse model, Ush1c c.216G>A, for Usher syndrome type IC (USH1C). As restoration of complex auditory and balance function is likely to require gene delivery systems that target auditory and vestibular sensory cells with high efficiency, we delivered wild-type Ush1c into the inner ear of Ush1c c...
March 2017: Nature Biotechnology
https://www.readbyqxmd.com/read/28165475/a-synthetic-aav-vector-enables-safe-and-efficient-gene-transfer-to-the-mammalian-inner-ear
#10
Lukas D Landegger, Bifeng Pan, Charles Askew, Sarah J Wassmer, Sarah D Gluck, Alice Galvin, Ruth Taylor, Andrew Forge, Konstantina M Stankovic, Jeffrey R Holt, Luk H Vandenberghe
Efforts to develop gene therapies for hearing loss have been hampered by the lack of safe, efficient, and clinically relevant delivery modalities. Here we demonstrate the safety and efficiency of Anc80L65, a rationally designed synthetic vector, for transgene delivery to the mouse cochlea. Ex vivo transduction of mouse organotypic explants identified Anc80L65 from a set of other adeno-associated virus (AAV) vectors as a potent vector for the cochlear cell targets. Round window membrane injection resulted in highly efficient transduction of inner and outer hair cells in mice, a substantial improvement over conventional AAV vectors...
March 2017: Nature Biotechnology
https://www.readbyqxmd.com/read/28138059/srpp-a-cell-wall-protein-is-involved-in-development-and-protection-of-seeds-and-root-hairs-in-arabidopsis-thaliana
#11
Natsuki Tanaka, Hiroshi Uno, Shohei Okuda, Shizuka Gunji, Ali Ferjani, Takashi Aoyama, Masayoshi Maeshima
Enhancement of root hair development in response to phosphate (Pi) deficit has been reported extensively. Root hairs are involved in major root functions such as the absorption of water, acquisition of nutrients, and secretion of organic acids and enzymes. Individual root hair cells maintain these functions and appropriate structure under various physiological conditions. We examined to identify protein(s), which keep the structure and function of root hairs, and identified a protein (SEED AND ROOT HAIR PROTECTIVE PROTEIN, SRPP) that was induced in root hairs under Pi deficient conditions...
January 30, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/28125532/the-modern-male-rhytidectomy-lessons-learned
#12
Rod J Rohrich, James M Stuzin, Smita Ramanadham, Christopher Costa, Phillip B Dauwe
BACKGROUND: Cosmetic surgery among male patients has become increasingly popular. The face-lift technique is different in male patients, specifically regarding preservation of hair follicles, restoration of a youthful and well appearance, and reduction of the risk of hematoma. METHODS: A retrospective review of a single surgeon's past 20 years of consecutive male rhytidectomies revealed a cohort of 83 patients. A control group was created by random selection of 83 age-matched female rhytidectomy patients during the same period...
February 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28115465/targeted-crispr-disruption-reveals-a-role-for-rnase-mrp-rna-in-human-preribosomal-rna-processing
#13
Katherine C Goldfarb, Thomas R Cech
MRP RNA is an abundant, essential noncoding RNA whose functions have been proposed in yeast but are incompletely understood in humans. Mutations in the genomic locus for MRP RNA cause pleiotropic human diseases, including cartilage hair hypoplasia (CHH). Here we applied CRISPR-Cas9 genome editing to disrupt the endogenous human MRP RNA locus, thereby attaining what has eluded RNAi and RNase H experiments: elimination of MRP RNA in the majority of cells. The resulting accumulation of ribosomal RNA (rRNA) precursor-analyzed by RNA fluorescent in situ hybridization (FISH), Northern blots, and RNA sequencing-implicates MRP RNA in pre-rRNA processing...
January 1, 2017: Genes & Development
https://www.readbyqxmd.com/read/28106913/efficacy-of-50%C3%A2-hz-electromagnetic-fields-on-human-epidermal-stem-cell-transplantation-seeded-in-collagen-sponge-scaffolds-for-wound-healing-in-a-murine-model
#14
Wen-Fang Bai, Wei-Cheng Xu, Hong-Xiang Zhu, Hong Huang, Bo Wu, Ming-Sheng Zhang
To explore the possible efficacy of electromagnetic fields (EMF) for skin tissue engineering, effects of EMF exposure on epidermal stem cells (ESC) seeded in collagen sponge scaffolds for wound healing in a murine model were investigated. The wound models of a full-thickness defect established with 36 7 ∼ 8-week-old nude mice were randomly divided into three groups: a control group, an ESC-only group, and an ESC with EMF exposure group (frequency of 50 Hz, magnetic induction of 5 mT, 60 min per day for 20 days)...
April 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/28099203/evaluation-of-gene-expression-patterns-in-micrografts-demonstrate-induction-of-catagen-like-processes-during-storage
#15
Walter Krugluger, Karl Stiefsohn, Karl Moser, Claudia Moser, Katarina Laciak
BACKGROUND: Alterations of gene expression patterns may contribute to the commonly observed transient reduction of hair shaft elongation in hair restoration surgery. OBJECTIVE: To elucidate the molecular causes, we evaluated changes in gene expression patterns in hair follicle micrografts during storage. MATERIALS AND METHODS: Micrografts with different amounts of adjacent connective tissue (regular, skinny, and chubby) were stored for different periods, and the expression of key genes was determined: dermal papilla (DP): FGF7, alkaline phosphatase (ALP), versican; outer root sheath: Krt15; inner root sheath: Krt 25; cuticula: Krt85; Henle layer: filaggrin; genes related to apoptosis and growth/differentiation: Caspase 3, Ovol1, and Foxo1...
February 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28095555/megasessions-for-robotic-hair-restoration
#16
Joa O Carlos Pereira, Joa O Carlos Pereira Filho, Joa O Pedro Cabrera Pereira
A robotic system can select and remove individual hair follicles from the donor area with great precision and without fatigue. This report describes the use of the robotic system in a megasession for hair restoration. Patients were instructed to cut their hair to 1.0 to 1.2 mm before surgery. The robot selected and removed 600 to 800 grafts per hour so the follicular units (FU)s could be transplanted manually to recipient sites. The robot arm consists of a sharp inner punch and a blunt outer punch which together separate FUs from the sur- rounding tissue...
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28087829/tracheophytes-contain-conserved-orthologs-of-a-basic-helix-loop-helix-transcription-factor-that-modulate-root-hair-specific-genes
#17
Youra Hwang, Hee-Seung Choi, Hyun-Min Cho, Hyung-Taeg Cho
ROOT HAIR SPECIFIC (RHS) genes, which contain the root hair-specific cis-element (RHE) in their regulatory regions, function in root hair morphogenesis. Here, we demonstrate that an Arabidopsis thaliana basic helix-loop-helix transcription factor, ROOT HAIR DEFECTVE SIX-LIKE4 (RSL4), directly binds to the RHE in vitro and in vivo, upregulates RHS genes, and stimulates root hair formation in Arabidopsis. Orthologs of RSL4 from a eudicot (poplar [Populus trichocarpa]), a monocot (rice [Oryza sativa]), and a lycophyte (Selaginella moellendorffii) each restored root hair growth in the Arabidopsis rsl4 mutant...
January 2017: Plant Cell
https://www.readbyqxmd.com/read/28074124/involvement-of-blood-mononuclear-cells-in-the-infertility-age-associated-diseases-and-cancer-treatment
#18
REVIEW
Antonin Bukovsky
Blood mononuclear cells consist of T cells and monocyte derived cells. Beside immunity, the blood mononuclear cells belong to the complex tissue control system (TCS), where they exhibit morphostatic function by stimulating proliferation of tissue stem cells followed by cellular differentiation, that is stopped after attaining the proper functional stage, which differs among various tissue types. Therefore, the term immune and morphostatic system (IMS) should be implied. The TCS-mediated morphostasis also consists of vascular pericytes controlled by autonomic innervation, which is regulating the quantity of distinct tissues in vivo...
December 26, 2016: World Journal of Stem Cells
https://www.readbyqxmd.com/read/28034617/cochlear-hair-cell-regeneration-after-noise-induced-hearing-loss-does-regeneration-follow-development
#19
REVIEW
Fei Zheng, Jian Zuo
Noise-induced hearing loss (NIHL) affects a large number of military personnel and civilians. Regenerating inner-ear cochlear hair cells (HCs) is a promising strategy to restore hearing after NIHL. In this review, we first summarize recent transcriptome profile analysis of zebrafish lateral lines and chick utricles where spontaneous HC regeneration occurs after HC damage. We then discuss recent studies in other mammalian regenerative systems such as pancreas, heart and central nervous system. Both spontaneous and forced HC regeneration occurs in mammalian cochleae in vivo involving proliferation and direct lineage conversion...
December 26, 2016: Hearing Research
https://www.readbyqxmd.com/read/28029476/a-murine-model-of-orthotopic-periorbital-subunit-transplantation
#20
Bowen Gao, Bin Li, Xinxin Li, Jinhong Bae, Kaiyan Xiao, Qingfeng Li, Hainan Zhu
BACKGROUND: Conventional reconstructive methods fail to achieve satisfactory results in total eyelid defect cases. Vascularized composite tissue allotransplantation might provide both good appearance and function for these patients. We developed an orthotopic periorbital transplantation model in rats to facilitate further experimentation in this field. METHODS: In anatomical studies, the vascular distribution to and innervation of the periorbital unit were identified and recorded...
March 2017: Burns: Journal of the International Society for Burn Injuries
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