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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/28798321/crispr-cas9-mediated-deletion-of-foxn1-in-nod-scid-il2rg-mice-results-in-severe-immunodeficiency
#2
Xinru Wei, Yunxin Lai, Baiheng Li, Le Qin, Youdi Xu, Simiao Lin, Suna Wang, Qiting Wu, Qiubin Liang, Guohua Huang, Qiuhua Deng, Pentao Liu, Donghai Wu, Liangxue Lai, Yao Yao, Peng Li
Immunodeficient mice engrafted with either normal or cancerous human cells are widely used in basic and translational research. In particular, NOD/SCID/IL2rg(-/-) mice can support the growth of various types of human cancer cells. However, the hairs of these mice interfere with the observation and imaging of engrafted tissues. Therefore, novel hairless strains exhibiting comparable immunodeficiency would be beneficial. Recently, the CRISPR/Cas9 system has been used for efficient multiplexed genome editing. In the present study, we generated a novel strain of nude NOD/SCID/IL2rg(-/-) (NSIN) mice by knocking out Foxn1 from NOD/SCID/IL2rg(-/-) (NSI) mice using the CRISPR/Cas9 system...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28798065/self-organization-process-in-newborn-skin-organoid-formation-inspires-strategy-to-restore-hair-regeneration-of-adult-cells
#3
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/28793165/norman-orentreich-the-father-of-hair-transplantation
#4
Noman Choudhry, Anshum Sood, Stephanie Steinweg
No abstract text is available yet for this article.
August 1, 2017: JAMA Dermatology
https://www.readbyqxmd.com/read/28749199/hair-follicle-associated-pluripotent-hap-stem-cells
#5
Yasuyuki Amoh, Robert M Hoffman
Various types of stem cells reside in the skin, including keratinocyte progenitor cells, melanocyte progenitor cells, and skin-derived precursors (SKPs), and nestin-expressing hair follicle-associated-pluripotent (HAP) stem cells. HAP stem cells, located in the bulge area of the hair follicle, have been shown to differentiate to nerve cells, glial cells, keratinocytes, smooth muscle cells, cardiac muscle cells, and melanocytes. HAP stem cells are positive forthe stem cell marker CD34, as well as K15-negative, suggestingtheir relatively undifferentiated state and therefore, HAP stem cells may be the most primitive stem cells in the skin...
July 27, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28740409/hair-follicle-growth-by-stromal-vascular-fraction-enhanced-adipose-transplantation-in-baldness
#6
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
#7
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/28728330/hair-diameter-variation-in-different-vertical-regions-of-the-occipital-safe-donor-area
#8
Seon Sik Yun, Jae Hyun Park, Young Cheon Na
BACKGROUND: Little is known concerning hair diameter variation within the safe donor area for hair transplantation surgery. Thicker or thinner hair may be needed, depending on the recipient area, hairline design, and the purpose of surgery. METHODS: Twenty-seven patients (7 men and 20 women; mean age, 28 years; range, 20-47 years) were included in this study. The midoccipital point was used as the reference point on the horizontal plane at the upper border of the helical rim...
July 2017: Archives of Plastic Surgery
https://www.readbyqxmd.com/read/28717861/patient-perspectives-on-gene-transfer-therapy-for-sickle-cell-disease
#9
Heather Strong, Monica J Mitchell, Alana Goldstein-Leever, Lisa Shook, Punam Malik, Lori E Crosby
INTRODUCTION: Sickle cell disease (SCD) is a chronic genetic disease with high morbidity and early mortality; it affects nearly 100,000 individuals in the USA. Bone marrow transplantation, the only curative treatment, is available to less than 20% of patients because of a number of access barriers. Gene transfer therapy (GTT) has been shown to be curative in animal models and is approved for use in humans for early-phase studies at a few centers. GTT would offer a more accessible treatment option available to all patients...
July 17, 2017: Advances in Therapy
https://www.readbyqxmd.com/read/28702978/the-evolution-of-artificial-hair-implantation
#10
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/28689433/experimental-and-early-investigational-drugs-for-androgenetic-alopecia
#11
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/28680144/transplanted-adipose-derived-stem-cells-can-be-short-lived-yet-accelerate-healing-of-acid-burn-skin-wounds-a-multimodal-imaging-study
#12
Ghulam Muhammad, Jiadi Xu, Jeff W M Bulte, Anna Jablonska, Piotr Walczak, Miroslaw Janowski
The incidence of accidental and intentional acid skin burns is rising. Current treatment strategies are mostly inadequate, leaving victims disfigured and without treatment options. Here, we have shown that transplantation of adipose-derived stem cells (ASCs) accelerates the process of acid burn wound-healing. Pre-conditioning of ASCs using ascorbic acid (AA) or hypoxic conditions provided additional benefit. While the wounds were ultimately healed in all mice, histological analysis revealed that, in non-transplanted animals, the number of hair follicles was reduced...
July 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28670518/hair-follicle-generation-by-injections-of-adult-human-follicular-epithelial-and-dermal-papilla-cells-into-nude-mice
#13
Mohammadali Nilforoushzadeh, Elham Rahimi Jameh, Fariba Jaffary, Ehsan Abolhasani, Gelavizh Keshtmand, Hajar Zarkob, Parvaneh Mohammadi, Nasser Aghdami
OBJECTIVE: Dermal papilla and hair epithelial stem cells regulate hair formation and the growth cycle. Damage to or loss of these cells can cause hair loss. Although several studies claim to reconstitute hairs using rodent cells in an animal model, additional research is needed to develop a stable human hair follicle reconstitution protocol. In this study, we have evaluated hair induction by injecting adult cultured human dermal papilla cells and a mixture of hair epithelial and dermal papilla cells in a mouse model...
July 2017: Cell Journal
https://www.readbyqxmd.com/read/28668139/hair-transplant-added-value-when-performed-by-a-dermatologist
#14
EDITORIAL
S Vañó Galván
No abstract text is available yet for this article.
July 2017: Actas Dermo-sifiliográficas
https://www.readbyqxmd.com/read/28643534/transplantation-of-mouse-induced-pluripotent-stem-cells-into-the-cochlea-for-the-treatment-of-sensorineural-hearing-loss
#15
Jing Chen, Lina Guan, Hengtao Zhu, Shan Xiong, Liang Zeng, Hongqun Jiang
CONCLUSION: Mouse-induced pluripotent stem cells (iPSCs) could differentiate into hair cell-like cells and spiral ganglion-like cells after transplantation into mouse cochleae, but it cannot improve the auditory brain response (ABR) thresholds in short term. OBJECTIVE: To evaluate the potential of iPSCs for use as a source of transplants for the treatment of sensorineural hearing loss (SNHL). METHODS: Establishing SNHL mice model, then injecting the iPSCs or equal volume DMEM basic medium into the cochleae, respectively...
June 23, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/28614369/unlocking-the-vital-role-of-host-cells-in-hair-follicle-reconstruction-by-semi-permeable-capsules
#16
Zhexiang Fan, Yong Miao, Qian Qu, Shune Xiao, Jin Wang, Lijuan Du, Bingcheng Liu, Zhiqi Hu
Organ regeneration is becoming a promising choice for many patients; however, many details about the mechanisms underlying organ regeneration remain unknown. As regenerative organs, hair follicles offer a good model to study the mechanisms associated with regenerative medicine. The relevant studies have mainly focused on donor cells, and there are no systematic studies involving the effect of host factors on hair follicle reconstruction. Thus, we intend to explore the effect of host cells on hair follicle reconstruction...
2017: PloS One
https://www.readbyqxmd.com/read/28586023/genetic-testing-and-counseling-of-a-recipient-after-bone-marrow-transplant-from-a-sibling-harboring-a-germline-brca1-pathogenic-mutation
#17
Petra Škerl, Mateja Krajc, Ana Blatnik, Srdjan Novaković
Allogenic bone marrow transplant recipients represent a unique challenge, when they are referred for genetic testing and counseling. When performing genetic testing, it is extremely important to ensure that the detected DNA mutations originate from the patients own DNA, and therefore the most appropriate and reliable biological sample for DNA isolation must be obtained. The aim of the present study was to present the germline testing and counseling approach utilized in a rare case of a chimeric woman who received an allogenic bone marrow transplant from a sibling with a germline BRCA1 pathogenic mutation...
June 6, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28585775/the-roles-of-the-pd-1-pd-l1-pathway-at-immunologically-privileged-sites
#18
Li-Ling Wang, Zhi-Hui Li, Xiao-Hui Hu, Kahinho P Muyayalo, Yong-Hong Zhang, Ai-Hua Liao
The PD-1/PD-L1 pathway plays a vital role in the maintenance of peripheral tolerance, promoting the development and function of regulatory T cells, and maintaining the quiescence of autoreactive T cells. Abnormalities in this inhibitory pathway are involved in the pathogenesis of some disorders such as tumours, autoimmune diseases, pregnancy complications, and transplantation rejection. Immune privilege represents a special immunological condition, where foreign antigens can be tolerated and do not elicit an immune response...
June 6, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28584752/body-to-scalp-evolving-trends-in-body-hair-transplantation
#19
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/28541264/basement-membrane-matrix-promotes-the-efficiency-of-hair-follicle-reconstruction-in-vivo-and-is-a-cell-delivery-vehicle-for-follicle-regeneration
#20
Shune Xiao, Yong Miao, Jin Wang, Bojie Lin, Zhiqi Hu
BACKGROUND: The efficiency of hair follicle (HF) reconstruction is decreased by extensive apoptotic remodeling that occurs soon after grafting. OBJECTIVE: To evaluate a basement membrane matrix (matrix) to improve the efficiency of HF reconstruction and serve as a cell delivery vehicle. MATERIALS AND METHODS: Newborn mouse skin cells were suspended in a matrix and transplanted in a chamber assay. The viability and proliferation of mouse dermal papilla cells seeded in the matrix were tested...
June 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
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