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https://www.readbyqxmd.com/read/28818455/adipose-derived-stromal-cells-enhance-auditory-neuron-survival-in-an-animal-model-of-sensory-hearing-loss
#1
Philipp Schendzielorz, Maike Vollmer, Kristen Rak, Armin Wiegner, Nashwa Nada, Katrin Radeloff, Rudolf Hagen, Andreas Radeloff
BACKGROUND: A cochlear implant (CI) is an electronic prosthesis that can partially restore speech perception capabilities. Optimum information transfer from the cochlea to the central auditory system requires a proper functioning auditory nerve (AN) that is electrically stimulated by the device. In deafness, the lack of neurotrophic support, normally provided by the sensory cells of the inner ear, however, leads to gradual degeneration of auditory neurons with undesirable consequences for CI performance...
August 14, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28814279/musashi-1-is-the-candidate-of-the-regulator-of-hair-cell-progenitors-during-inner-ear-regeneration
#2
Takahiro Wakasaki, Hiroaki Niiro, Siamak Jabbarzadeh-Tabrizi, Mitsuru Ohashi, Takashi Kimitsuki, Takashi Nakagawa, Shizuo Komune, Koichi Akashi
BACKGROUND: Hair cell loss in the cochlea is caused by ototoxic drugs, aging, and environmental stresses and could potentially lead to devastating pathophysiological effects. In adult mammals, hair cell loss is irreversible and may result in hearing and balance deficits. In contrast, nonmammalian vertebrates, including birds, can regenerate hair cells through differentiation of supporting cells and restore inner ear function, suggesting that hair cell progenitors are present in the population of supporting cells...
August 16, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28806331/cochlear-implants-meet-regenerative-biology-state-of-the-science-and-future-research-directions
#3
Alain Dabdoub, Koji Nishimura
: The cochlear implant, the first device to restore a human sense, is an electronic substitute for lost mechanosensory hair cells. It has been successful at providing hearing to people with severe to profound hearing loss and as of 2012, an estimated 324,000 patients worldwide have received cochlear implants. Users of cochlear implants however, suffer from difficulties in processing complex sounds such as music and in discriminating sounds in noisy environments. Recent advances in regenerative biology and medicine are opening new avenues for enhancing the efficacy of cochlear implants by improving the neural interface in the future and offer the possibility of an entirely biological solution for hearing loss in the long term...
September 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28798065/self-organization-process-in-newborn-skin-organoid-formation-inspires-strategy-to-restore-hair-regeneration-of-adult-cells
#4
Mingxing Lei, Linus J Schumacher, Yung-Chih Lai, Wen-Tau Juan, Chao-Yuan Yeh, Ping Wu, Ting-Xin Jiang, Ruth E Baker, Randall Bruce Widelitz, Li Yang, Cheng-Ming Chuong
Organoids made from dissociated progenitor cells undergo tissue-like organization. This in vitro self-organization process is not identical to embryonic organ formation, but it achieves a similar phenotype in vivo. This implies genetic codes do not specify morphology directly; instead, complex tissue architectures may be achieved through several intermediate layers of cross talk between genetic information and biophysical processes. Here we use newborn and adult skin organoids for analyses. Dissociated cells from newborn mouse skin form hair primordia-bearing organoids that grow hairs robustly in vivo after transplantation to nude mice...
August 10, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28761259/a-comparative-study-of-microneedling-with-platelet-rich-plasma-plus-topical-minoxidil-5-and-topical-minoxidil-5-alone-in-androgenetic-alopecia
#5
Kaksha B Shah, Aarti N Shah, Rekha B Solanki, Ranjan C Raval
CONTEXT: There are very few studies evaluating efficacy of platelet-rich plasma (PRP) in hair restoration and its combination with microneedling. As far as ascertained, there is no study to evaluate efficacy of microneedling with PRP plus topical minoxidil (5%) versus topical minoxidil (5%) alone in androgenetic alopecia (AGA). AIMS: This study aims (1) to compare the efficacy of (a) topical minoxidil (5%) alone and (b) topical minoxidil (5%) + microneedling with PRP in men between 18 and 50 years with AGA Grade III to V vertex (Norwood-Hamilton scale) and (2) to perform objective and subjective evaluation based on clinical improvement and photographic evidence...
January 2017: International Journal of Trichology
https://www.readbyqxmd.com/read/28741388/comparative-proteomic-analysis-of-the-effect-of-the-four-herb-chinese-medicine-anbp-on-promoting-mouse-skin-wound-healing
#6
Li Chen, Qian Hou, Zhong-Zhi Zhou, Mei-Rong Li, Ling-Zhi Zhong, Xiang-Dong Deng, Zi-Ying Zhu, Zhong-Yi Cheng, Jun Zhu, Cong-Lian Xiang, Wen-Jun He, Xiao-Bing Fu
Traditional Chinese medicine has great potential to improve wound healing. ANBP, the mixture of 4 Chinese herbs- Agrimoniapilosa, Nelumbonucifera, Boswelliacarteri, and Pollen typhae-is effective in trauma treatment while its mechanism is still elusive. In this study, quantitative proteomics and bioinformatics analyses were performed to decipher the possible roles of ANBP in accelerated wound healing of mouse skin. Among all 3171 identified proteins, 90, 71, 80, and 140 proteins were found to be differently expressed in 6 hours, 3 days, 7 days, and 14 days ANBP-treated tissues compared with corresponding control tissues, respectively...
July 1, 2017: International Journal of Lower Extremity Wounds
https://www.readbyqxmd.com/read/28740409/hair-follicle-growth-by-stromal-vascular-fraction-enhanced-adipose-transplantation-in-baldness
#7
David Perez-Meza, Craig Ziering, Marcos Sforza, Ganesh Krishnan, Edward Ball, Eric Daniels
Great interest remains in finding new and emerging therapies for the treatment of male and female pattern hair loss. The autologous fat grafting technique is >100 years old, with a recent and dramatic increase in clinical experience over the past 10-15 years. Recently, in 2001, Zuk et al published the presence of adipose-derived stem cells, and abundant research has shown that adipose is a complex, biological active, and important tissue. Festa et al, in 2011, reported that adipocyte lineage cells support the stem cell niche and help drive the complex hair growth cycle...
2017: Stem Cells and Cloning: Advances and Applications
https://www.readbyqxmd.com/read/28736812/hair-transplantation-for-the-treatment-of-lichen-planopilaris-and-frontal-fibrosing-alopecia-a-report-of-two-cases
#8
You-Chen Serena Liu, Shiou-Hwa Jee, Jung-Yi Lisa Chan
The efficacy of current medical treatments for lichen planopilaris (LPP) and its variant, frontal fibrosing alopecia (FFA), both lymphocyte-mediated primary cicatricial alopecias, is limited. Hair regrowth from scar tissue is usually not possible. Although hair transplantation restores the hairline and increases hair density in patients with cicatricial alopecia, the timing of the transplantation is crucial. Here, we report two Chinese patients with LPP or FFA who underwent the follicular unit extraction method of hair transplantation after the diseases were stabilised with therapy, with satisfactory results for 3-4 years of follow up...
July 24, 2017: Australasian Journal of Dermatology
https://www.readbyqxmd.com/read/28729444/an-atoh1-s193a-phospho-mutant-allele-causes-hearing-deficits-and-motor-impairment
#9
Wei Rose Xie, Hsin-I Jen, Michelle L Seymour, Szu-Ying Yeh, Fred A Pereira, Andrew K Groves, Tiemo J Klisch, Huda Y Zoghbi
Atoh1 is a basic helix-loop-helix (bHLH) transcription factor that is essential for the genesis, survival, and maturation of a variety of neuronal and non-neuronal cell populations, including those involved in proprioception, interoception, balance, respiration, and hearing. Such diverse functions require fine regulation at the transcriptional and protein levels. Here we show that serine 193 (S193) is phosphorylated in Atoh1's bHLH domain in vivo Knock-in mice of both sexes bearing a GFP-tagged phospho-dead S193A allele on a null background (Atoh1(S193A/lacZ) ) exhibit mild cerebellar foliation defects, motor impairments, and also partial pontine nucleus migration defects, cochlear hair cell degeneration, and profound hearing loss...
July 20, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28718807/melanin-and-melanin-related-polymers-as-materials-with-biomedical-and-biotechnological-applications-cuttlefish-ink-and-mussel-foot-proteins-as-inspired-biomolecules
#10
REVIEW
Francisco Solano
The huge development of bioengineering during the last years has boosted the search for new bioinspired materials, with tunable chemical, mechanical, and optoelectronic properties for the design of semiconductors, batteries, biosensors, imaging and therapy probes, adhesive hydrogels, tissue restoration, photoprotectors, etc. These new materials should complement or replace metallic or organic polymers that cause cytotoxicity and some adverse health effects. One of the most interesting biomaterials is melanin and synthetic melanin-related molecules...
July 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28702978/the-evolution-of-artificial-hair-implantation
#11
M Agrawal, J Lotti, K França, M Fioranelli, M G Roccia, T Lotti
From the beginning, artificial hair implantation has aroused a lot of interest, sometimes controversial, in the field of hair restoration. The artificial fiber must be of high quality and biocompatible. Biofibre® is a very fine fiber having diameter of 80 m. The standard length of this fiber is 15 or 30 cm, to satisfy multiple patient requests. They are available in 13 colors and 3 different shapes (straight, wavy and curly). Artificial hair implant is indicated in all (male and female) cases of androgenetic alopecia, especially for those who show dismal response to medical therapies and have poor donor area supply for hair transplantation...
April 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28686861/generation-of-human-hair-cells-in%C3%A2-vitro-is-it-all-about-how-the-wnt-blows
#12
Matthew W Kelley
Screening for small molecules or drugs that can protect or restore mechanosensory hair cells has been hampered by limited cell numbers. In Nature Biotechnology, Koehler et al. (2017) have developed a human organoid-based approach using basic developmental principles to generate large numbers of bonafide hair cells in vitro.
July 6, 2017: Cell Stem Cell
https://www.readbyqxmd.com/read/28686713/transcriptome-wide-comparison-of-the-impact-of-atoh1-and-mir-183-family-on-pluripotent-stem-cells-and-multipotent-otic-progenitor-cells
#13
Michael Ebeid, Prashanth Sripal, Jason Pecka, Kirk W Beisel, Kelvin Kwan, Garrett A Soukup
Over 5% of the global population suffers from disabling hearing loss caused by multiple factors including aging, noise exposure, genetic predisposition, or use of ototoxic drugs. Sensorineural hearing loss is often caused by the loss of sensory hair cells (HCs) of the inner ear. A barrier to hearing restoration after HC loss is the limited ability of mammalian auditory HCs to spontaneously regenerate. Understanding the molecular mechanisms orchestrating HC development is expected to facilitate cell replacement therapies...
2017: PloS One
https://www.readbyqxmd.com/read/28682135/using-zebrafish-as-a-model-to-study-the-role-of-epigenetics-in-hearing-loss
#14
REVIEW
Yingzi He, Beier Bao, Huawei Li
The rapid progress of bioinformatics and high-throughput screening techniques in recent years has led to the identification of many candidate genes and small-molecule drugs that have the potential to make significant contributions to our understanding of the developmental and pathological processes of hearing, but it remains unclear how these genes and regulatory factors are coordinated. Increasing evidence suggests that epigenetic mechanisms are essential for establishing gene expression profiles and likely play an important role in the development of inner ear and in the pathology of hearing-associated diseases...
September 2017: Expert Opinion on Drug Discovery
https://www.readbyqxmd.com/read/28652426/transcriptome-analysis-of-skin-from-smp30-gnl-knockout-mice-reveals-the-effect-of-ascorbic-acid-deficiency-on-skin-and-hair
#15
Koji Wakame, Ken-Ichi Komatsu, Akifumi Nakata, Keisuke Sato, Akira Takaguri, Hirofumi Masutomi, Takayuki Nagashima, Hironobu Uchiyama
BACKGROUND/AIM: Senescence marker protein-30/gluconolactonase knockout mice (SMP-30/GNL-KO) are a very useful model for clarifying the involvement of vitamin C (VC) in aging-related diseases. In this study, the effects of VC deficiency on skin and hair growth were investigated using SMP-30/GNL-KO mice by RNA sequencing. MATERIALS AND METHODS: SMP-30/GNL-KO mice were given water containing 1.5 g/l VC until up to 8 weeks after birth to maintain a VC concentration in their organs and plasma equivalent to that in wild-type mice...
July 2017: In Vivo
https://www.readbyqxmd.com/read/28599846/planar-cell-polarity-dependent-and-independent-functions-in-the-emergence-of-tissue-scale-hair-follicle-patterns
#16
Maureen Cetera, Liliya Leybova, Frank W Woo, Michael Deans, Danelle Devenport
Hair follicles of the mammalian epidermis display local order and global alignment, a complex pattern instructed by the core planar cell polarity (PCP) pathway. Here we address the contributions of core PCP genes, Van Gogh-like and Frizzled, to the establishment, local refinement, and global order of embryonic and postnatal hair follicles. We find that, similar to Fz6 mutants, the disordered hair patterns of Vangl2 mutants are refined over time and eventually corrected. In both mutants, we find that tissue-level reorientation occurs through locally coordinated follicle rotation at stereotyped locations...
August 1, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28584752/body-to-scalp-evolving-trends-in-body-hair-transplantation
#17
REVIEW
Kuldeep Saxena, Sandeep S Savant
Follicular unit extraction (FUE) is becoming an increasingly popular method for hair restoration. As FUE leaves behind no linear scars, it is more suitable to harvest from various body areas including beard, chest, and extremities in hirsute individuals. Body hair characteristics such as thickness, length, and hair cycle may not completely match to that of the scalp hair. The techniques of harvesting body hairs are more time consuming, requiring higher degree of skill than regular scalp FUE. Body hair transplantation can be successfully used either alone or in combination with scalp hair in advanced grades of baldness, for improving the cosmetic appearance of hairlines and in scarring alopecia when there is paucity of donor scalp hair...
May 2017: Indian Dermatology Online Journal
https://www.readbyqxmd.com/read/28576729/afferent-synaptogenesis-between-ectopic-hair-cell-like-cells-and-neurites-of-spiral-ganglion-induced-by-atoh1-in-mammals-in-vitro
#18
Wen-Wei Luo, Rui Ma, Xiang Cheng, Xiao-Yu Yang, Zhao Han, Dong-Dong Ren, Ping Chen, Fang-Lu Chi, Juan-Mei Yang
Newly formed ectopic hair-cell-like cells (EHCLCs) induced by overexpression of atonal homolog 1 (Atoh1) in vitro were found to possess features of endogenous hair cells (HCs) in previous reports and in the present study. However, limited information is available regarding whether EHCLCs and native spiral ganglion neurons (SGNs) form afferent synapses, which are important for the restoration of hearing. In the current study, we focused on the afferent synaptogenesis between EHCLCs and SGN-derived dendrites...
May 31, 2017: Neuroscience
https://www.readbyqxmd.com/read/28574382/dermal-adipose-tissue-in-hair-follicle-cycling-possible-applications-in-alopecia
#19
U Wollina, Naser M Abdel, I Kruglikov
Cross-talk between the hair follicles (HFs) in different stages of their cycling and adjacent adipose tissue is a new important topic which is of both theoretical and practical interest. Objective - to analyze available data on possible interrelationship of dermal adipose tissue and hair follicle cycling. Experimental results obtained in rodents clearly demonstrate that HFs cycling is connected to adjacent dermal adipose tissue. Recently uncovered adipocyte-myofibroblast transition can be significantly involved in miniaturization of HFs and be an important pathophysiological step in androgenetic alopecia...
April 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28552069/tissue-engineered-skin-and-wound-healing-current-strategies-and-future-directions
#20
Nandana Bhardwaj, Dimple Chouhan, Biman B Mandal
The global volume of skin damage or injuries has major healthcare implications and, accounts for about half of the world's annual expenditure in the healthcare sector. In the last two decades, tissue-engineered skin constructs have shown great promise in the treatment of various skin-related disorders such as deep burns and wounds. The treatment methods for skin replacement and repair have evolved from utilization of autologous epidermal sheets to more complex bilayered cutaneous tissue engineered skin substitutes...
May 25, 2017: Current Pharmaceutical Design
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