Application of extracellular vesicles from mesenchymal stem cells promotes hair growth by regulating human dermal cells and follicles

BACKGROUND Dermal papillae(DP)and outer root sheath(ORS)cells play important roles in hair growth and regeneration by regulating the activity of hair follicle(HF)cells.AIM To investigate the effects of human mesenchymal stem cell-derived extracellular vesicles(hMSC-EVs)on DP and ORS cells as well as HFs.EVs are known to regulate various cellular functions.However,the effects of hMSC-EVs on hair growth,particularly on human-derived HF cells(DP and ORS cells),and the possible mechanisms underlying these effects are unknown.METHODS hMSC-EVs were isolated and characterized using transmission electron microscopy,nanoparticle tracking analysis,western blotting,and flow cytometry.The activation of DP and ORS cells was analyzed using cellular proliferation,migration,western blotting,and real-time polymerase chain reaction.HF growth was evaluated ex vivo using human HFs.RESULTS Wnt3a is present in a class of hMSC-EVs and associated with the EV membrane.hMSC-EVs promote the proliferation of DP and ORS cells.Moreover,they translocateβ-catenin into the nucleus of DP cells by increasing the expression ofβ-catenin target transcription factors(Axin2,EP2 and LEF1)in DP cells.Treatment with hMSC-EVs also promoted the migration of ORS cells and enhanced the expression of keratin(K)differentiation markers(K6,K16,K17,and K75)in ORS cells.Furthermore,treatment with hMSC-EVs increases hair shaft elongation in cultured human HFs.CONCLUSION These findings suggest that hMSC-EVs are potential candidates for further preclinical and clinical studies on hair loss treatment.

Safety and Efficacy of Deeply Rooted^®Nutraceutical for Hair Growth in Women

Hair loss can significantly affect quality of life. Patients seeking treatment for hair loss find that many surgical or medication options involve significant risks or side effects. DEEPLY ROOTED® is a nutritional supplement that combines botanical and natural ingredients with the goal of effectively reducing hair loss and stimulating hair growth—without the side effects of many standard treatments. DEEPLY ROOTED’s active ingredients have both anti-inflammatory and adaptogenic properties, and inhibit dihydrotestosterone without the use of hormones, drugs, or industry by-products. This 3-month prospective study evaluates the effectiveness of DEEPLY ROOTED® for the prevention of hair loss. Healthy female subjects complaining of hair loss were enrolled, and supplied with three months of DEEPLY ROOTED®, without other compensation. The primary endpoint was a significant increase in hair growth. This was measured using anonymously collected patient data to evaluate hair growth and quality, as well as blinded Investigator hair assessment data. Patients who ingested DEEPLY ROOTED® over a three-month period reported noticeable improvement of hair growth (91%), increased hair volume (86%), and improved hair quality (86%). Subjects were noted to exhibit an increase in the number of new hairs, hair thickness and scalp coverage. No significant adverse effects were reported. DEEPLY ROOTED® safely helped over 90% of otherwise healthy women with self-perceived hair thinning to improve hair quality and quantity. The unique combination of botanical and natural ingredients provided a drug-free alternative for the management of hair loss.

Hair Growth Promoting Effect of Trichoxidil<up>TM</up>: A New Natural Compound for Hair Loss

Background: Androgenetic alopecia (AGA) is a most common condition of hair loss. Thus, the present study aimed to investigate the effect of TrichoxidilTM, a phytocomplex obtained from a blend of essential oils, in the treatment of hair loss caused by AGA. Methods: The CCD1072Sk cells were cultured for the 24-hour cell viability assessment and cytotoxicity of TrichoxidilTM. The expression of mRNA levels from KGF, IGF-1, and VEGF in fibroblasts was evaluated by RT-qPCR. Thirty-three volunteers, diagnosed with AGA, men and women, aged between 25 and 50 years, were divided into Control group, without treatment (n = 5);TrichosolTM vehicle group, without active (n = 5);Hydroalcoholic vehicle group, without active (n = 4);TrichosolTM vehicle group, with 2.5% minoxidil (n = 5);Hydroalcoholic vehicle group, with 2.5% minoxidil (n = 5);TrichosolTM group with 2.5% TrichoxidilTM (n = 5) and Hydroalcoholic vehicle group with 2.5% TrichoxidilTM (n = 4) to dermoscopic and histologic. Results: Fibroblasts exhibited higher proliferation when treated with higher concentrations of TrichoxidilTM. TrichoxidilTM significantly increased the expression of KGF, IGF-1, and VEGF mRNA in fibroblasts cells. Analysis of the capillary density showed that TrichoxidilTM associated with TrichosolTM vehicle, was the most effective association. In addition, it was observed an increased more effectively the percentage of anagen phase and reduction of the telogen when compared to other formulations. Conclusion: TrichoxidilTM promoted proliferative effects and positively modulated the expression of growth factors IGF-1, VEGF, and KGF, being a promising candidate for the treatment of hair loss caused by AGA.

Research Progress of Hair Growth Technology

This summarizes the research progress of domestic and foreign experts on the methods and technologies of hair growth,including the hair growth effects of natural plant extracts,mesotherapy and stem cell therapy.Looking forward to the development trend in the field of hair growth,mesotherapy has the advantages of convenient operation,good targeting,fewer side effects,and high cost performance.Combining it with anti-hair loss cosmetic products containing natural plant extracts to treat hair loss has very broad application prospects.

Red organic light-emitting diodes based photobiomodulation therapy enabling prominent hair growth

Hair loss can cause psychological distress.Here,red organic light-emitting diode(OLED)light source is first introduced as the photobiomodulation therapy(PBMT)for hair growth and demonstrated as a promising and non-invasive therapeutic modality for alopecia.OLED exhibits unique advantages of homogeneous irradiation,flexible in form factor,less heat generation.These features enable OLED to be an ideal candidate for wearable PBMT light sources.A systematic study of using red OLEDs to facilitate hair growth was conducted.The results show that OLEDs excellently promote hair regrowth.OLED irradiation can increase the length of the hair by a factor of 1.5 as compared to the control,the hair regrowth area is enlarged by over 3 times after 20 days of treatments.Moreover,the mechanism of OLED that stimulates hair follicle regeneration is investigated invivo by conducting a systematic controlled experiments on mice with or without OLED PBMT.Based on the comprehensive histological and immunofluorescence staining studies,two key factors are identified for red OLEDs to facilitate hair follicle regeneration:(i)increased autophagy during the anagen phase of the hair growth cycle;(ii)increased blood oxygen content promoted by the accelerated microvascular blood flow.

SH-118 Quick Growth Hair Blackening Oil

The SH-118 quick growth hair blackening oil produced by the Shanghai Yifa Health Care Industry Co. is made of effective ingredients extracted from natural wild plants on the principle of Chinese traditional medicine combined with modern scientific technology, There is neither any harmful chemical composition, nor side-effect. The product is a kind of brownish semi-transparent oily liquid, having the functions of aiding general weakness,

电针治疗调节miR-183对噪声性耳聋模型耳蜗毛细胞VEGF表达的影响

目的:探讨电针治疗调节miR-183对噪声性耳聋(NIHL)模型耳蜗毛细胞血管内皮生长因子(VEGF)表达的影响与作用机制。方法:将雄性SD大鼠随机均分为空白对照组、NIHL组、NIHL+针刺组、NIHL+针刺+腺病毒(AAV)-NC组和NIHL+针刺+AAV-sp-miR-183组。针刺组取中渚穴进行刺激。利用AAV载体在NIHL大鼠中敲低miR-183。各组大鼠进行听觉脑干反应(ABR)评估与毛细胞计数。qRT-PCR分析大鼠耳蜗组织miR-183水平。蛋白质免疫印迹测定VEGF水平。结果:与对照组相比,NIHL组耳蜗组织中miR-183的水平降低,ABR阈值差与毛细胞的缺失率升高,耳蜗毛细胞VEGF表达的水平升高(P<0.05)。与NIHL组相比,NIHL+针刺组耳蜗组织中miR-183的水平上升,ABR阈值差与毛细胞的缺失率降低,耳蜗毛细胞VEGF表达的水平升高(P<0.05)。NIHL+针刺+AAV-sp-miR-183组与NIHL+针刺+AAV-NC组相比,miR-183的水平降低,ABR阈值差与毛细胞的缺失率升高,耳蜗毛细胞VEGF表达的水平降低(P<0.05)。结论:电针治疗可以通过上调miR-183进而促进NIHL大鼠耳蜗毛细胞VEGF的表达,降低噪音诱导的NIHL大鼠ABR阈值差增高与毛细胞损伤。

自噬在毛发再生中的作用

背景:在生物医学界,自噬是一个快速发展的研究热点,许多研究人员正在积极探究多种疾病中自噬的分子调控机制,但是自噬在毛发生长中所起的作用仍存在许多未知。目的:综述目前自噬在毛发生长与再生中的研究进展及应用价值,了解自噬在毛发生长中的作用,以探究自噬在病理性脱发中的发病机制,为研究治疗脱发的药物提供新思路。方法:应用计算机在中国知网(CNKI)、PubMed数据库中,以“毛囊生长,毛发生长,毛发再生,自噬相关蛋白,自噬活性,自噬相关基因,自噬”或“hair growth,hair follicle,hair regeneration,autophagy”为检索词进行检索。查阅国内外近年来关于自噬、毛发生长和自噬在毛发生长中作用的研究进展进行总结,排除与文章主题内容不相符的文献,最终纳入78篇文献进行结果分析。结果与结论:(1)自噬是真核生物的正常代谢过程,具有复杂的分子机制和功能特性,既有利于细胞生存,又可促进细胞死亡。(2)脱发相关疾病与自噬活性的改变有关,且自噬活性可调控毛发生长周期;敲除或过表达自噬相关基因可改变毛发生长状态,已发现有多条自噬相关信号通路与毛囊生长有关;自噬的激活剂或抑制剂可用于治疗或预防脱发疾病。

基于RNA测序技术鉴定和分析绒山羊毛囊不同生长期mRNA的可变剪接

可变剪接(Alternative splicing,AS)是在转录后水平调控基因表达的一种重要方式。为挖掘调控绒山羊毛囊周期性生长相关的关键可变剪接,通过比较绒山羊绒毛不同生长时期的皮肤转录组数据,以P<0.05,|Inc‐LevelDifference|>0.1为标准筛选差异的可变剪接,并进行功能分析。结果显示,转换期Ⅰ、Ⅱ、Ⅲ、Ⅳ中分别鉴定到1615、1667、1387和1522个差异可变剪接,分别对应了1202、1268、1073、1170个基因;这些基因主要富集于Notch、Hedgehog、mTOR、AMPK、PI3K-Akt、Wnt、TGF-β等与毛囊发育相关的信号通路;蛋白互作网络结合富集分析表明,Ctnnb1、Gsk3b、Tgfbr1、Vegfa、Gli1等基因产生的可变剪接可能参与调控毛囊周期性生长。综上可知,可变剪接在绒山羊毛囊周期性生长过程中普遍存在,且在不同发育阶段间存在差异;鉴定到调控绒山羊毛囊周期性生长发育相关的关键差异可变剪接基因及其重要信号通路。

Wnt信号通路对动物毛囊周期性发育的调控作用研究进展

动物毛囊发育经历生长期、退行期和休止期3个时期,每个时期均受到不同信号分子的精准调控。诸多研究表明,在毛囊发生发育中,Wnt信号通路不仅可直接调节毛囊的形成及周期性循环,还通过与其他信号通路的交联作用,发挥间接调控作用。本文对哺乳动物毛囊的生物学特性、Wnt信号通路在毛囊发育的调控作用及与其他通路的互作进行综述,为改善家畜(羊毛、驼毛)和经济动物(貂毛、兔毛、狐狸毛)等的毛发品质和增加其产量提供理论依据。

同源细胞微移植技术联合A型肉毒毒素促进毛发再生的实验研究

目的 探索同源细胞微移植(MG)技术及A型肉毒毒素(BTX-A)联合使用对小鼠毛发再生的影响。方法 选取45只C57BL/6小鼠,随机分为生理盐水组(NS组)、MG组(MB-0组)、MG+低剂量BTX-A组(MB-2组)、MG+中剂量BTX-A组(MB-10组)、MG+高剂量BTX-A组(MB-50组),共5组,用药后观察小鼠背部毛发生长情况,并在实验第7、14、21天采用苏木精-伊红(HE)染色评估毛囊生长情况、在第21天采用免疫组织化学染色评估血管内皮生长因子(VEGF)及β-catenin的表达情况。结果 经过MG及BTX-A治疗后,小鼠皮肤变黑时间缩短(P<0.05),第14天新生毛发覆盖率增高(P<0.05)。与NS组比较,其余各实验组毛囊数目增多(P<0.05),VEGF及β-catenin表达增多。结论 MG联合BTX-A对小鼠毛发再生有促进作用,其机制可能和促进血管生长及激活β-catenin信号有关。

CeO_(2)纳米酶对环磷酰胺所致斑秃小鼠毛发生长的影响

目的 探讨氧化铈(CeO_(2))纳米酶对环磷酰胺所致斑秃小鼠模型毛发生长的影响。方法 将雌性C57BL/6J小鼠30只随机分为空白组、模型组和CeO_(2)纳米酶组(300μg/mL),每组10只。模型组和CeO_(2)纳米酶组小鼠采用单次腹腔内注射环磷酰胺注射液,构建斑秃小鼠模型。CeO_(2)纳米酶组小鼠给予300μg/mL CeO_(2)纳米酶外涂于小鼠背部剃毛区,空白组和模型组小鼠均予以等体积的PBS溶液外涂,1次/d,连续27 d。实验结束后(第28天)肉眼观察小鼠背部秃发区毛发生长情况并进行评分;HE染色小鼠背部经处理的皮肤组织计算单位视野内毛囊数量;酶联免疫吸附试验(ELISA)法检测小鼠血清细胞间黏附分子-1(ICAM-1)及内皮细胞白细胞黏附分子-1(ELAM-1)水平;水溶性四唑盐-1法(WST-1)检测皮肤组织丙二醛(MDA)及超氧化物歧化酶(SOD)含量。结果 与空白组相比,模型组小鼠毛发生长及毛发评分显著下降(P<0.05),毛囊数量明显减少(P<0.05),血清ICAM-1及ELAM-1水平升高(P<0.05),皮肤组织MDA含量升高而SOD含量降低(P<0.05);与模型组相比,CeO_(2)纳米酶组毛发生长及毛发评分显著增加(P<0.05),毛囊数量明显增多(P<0.05),血清ICAM-1及ELAM-1水平降低(P<0.05),皮肤组织MDA含量降低而SOD含量升高(P<0.05)。结论 外用CeO_(2)纳米酶对环磷酰胺所致斑秃小鼠模型具有促进毛发再生的作用,为CeO_(2)纳米酶外用治疗斑秃提供了实验依据。

浓缩生长因子治疗雄激素性秃发的回顾性研究

目的:回顾性分析浓缩生长因子(concentrated growth factor,CGF)治疗雄激素性秃发(androgenetic alopecia,AGA)的疗效与安全性。方法:收集使用CGF治疗的60例AGA患者资料。12例为CGF治疗组,48例为联合治疗组。CGF组和联合治疗组均给予CGF治疗,连续注射3次,联合组另给予米诺地尔酊外用,口服非那雄胺(男性)或螺内酯(女性)。通过毛发密度和毛囊单位密度改善程度、毛发镜图像特征变化、治疗前后照片以及医生和患者满意度评价综合评估有效性。同时,记录发生局部及全身不良反应的患者例数,以评估安全性。结果:CGF联合治疗组和CGF组治疗后的平均毛囊单位密度较治疗前分别增加了(18.04±11.15)和(8.81±5.77)个/cm 2(均P<0.05),平均毛发密度较治疗前分别增加了(36.43±21.18)和(16.19±12.62)根/cm 2(均P<0.05)。两组之间在改善毛发密度上差异具有统计学意义(P<0.05),在改善毛囊单位密度上差异无统计学意义(P>0.05)。两组毛囊周围褐色征、黄点征、空毛囊的治疗后改善率均在70%以上,但两组之间差异均无统计学意义(均P>0.05)。两组医生与患者治疗后满意率均在90%以上。60例患者中仅有2例局部注射部位疼痛明显,3例患者头皮瘙痒。结论:CGF治疗AGA安全有效,联合使用米诺地尔酊和非那雄胺/螺内酯,效果更佳。

超高效液相色谱-串联质谱法测定洗发水中14种防脱育发类药物的含量

提出了超高效液相色谱-串联质谱法测定洗发水中西咪替丁、米诺地尔、美拉酮宁、香草酸甲酯、酮康唑、比马前列素、非那雄胺、塞替匹仑、尼鲁米特、氟罗地尔、螺内酯、氟他胺、拉坦前列素、度他雄胺等14种防脱育发类药物含量的方法。样品经水溶解、乙腈提取后,用氨基固相萃取柱净化。以Waters Accquity UPLC BEH C18色谱柱为固定相,以乙腈-含0.1%(体积分数)甲酸的2 mmol·L^(-1)乙酸铵溶液为流动相体系进行梯度洗脱;分离后的14种目标物经电喷雾离子源正、负离子模式扫描,多反应监测模式检测。结果表明:14种目标物的质量浓度在1.0~50.0μg·L^(-1)内与对应的峰面积呈线性关系,检出限(3S/N)为0.05~3.0μg·kg^(-1);对空白样品进行3个浓度水平的加标回收试验,回收率为83.6%~99.0%,测定值的相对标准偏差(n=6)为5.6%~15%;方法用于10个洗发水样品分析,一个样品中检出米诺地尔、西咪替丁、塞替匹仑、酮康唑、尼鲁米特、氟罗地尔,另一个样品中检出美拉酮宁,检出量为0.4~47.8μg·kg^(-1)。

水禽羽毛生长机制及其营养调控研究进展

羽毛是水禽的关键经济性状,也是重要的外貌特征,羽毛在飞翔、保温、游泳、防护、调控温度等方面都具有重要作用。羽毛的结构复杂,羽毛类型及组成也大不相同,另外羽毛的发育需经过三代逐级生长才最终长成。毛囊的生长发育在羽毛生长发育中扮演着重要角色,从毛囊的结构及组成,毛囊发生发育的过程到毛囊生长期、退行期和静止期3个时期的更新,初级毛囊和次级毛囊的分类等无一不显示出毛囊发育是羽毛生长发育的关键。羽毛的生长发育是一个极其复杂的过程,除了Wnt/β-连环蛋白(β-catenin)信号通路、成纤维细胞生长因子(fibroblast growth factor,FGF)家族、SHH信号通路、Notch信号、Hox基因、表皮生长因子(EGF)和血小板衍生生长因子(PDGF)等多种因素参与外,还受到各种营养物质的调控,如蛋白质、氨基酸、维生素、矿物元素等。然而,近年来随着养禽业集约化发展和旱养规模化的进步,水禽羽毛问题(如生长缓慢、无光泽、异常脱落等)日益突出,严重影响其羽毛品质及屠宰外观,导致极大经济损失。作者主要从水禽羽毛生长、毛囊的结构与发育等方面阐述了参与水禽羽毛生长和毛囊发育的相关因子,并整理归纳了对羽毛生长发育具有积极调控作用的营养物质,以期为解决水禽羽毛问题和推进水禽产业发展提供一定的参考。

防脱育发草本精粹对毛发生长及其抗氧化、抗炎的性质研究

目的 探究防脱育发草本精粹防脱育发能力。方法 通过细胞计数试剂盒8测定防脱育发草本精粹对真皮乳头细胞(DPC)增殖与抗氧化能力作用,利用实时荧光定量PCR检测防脱育发草本精粹对DPC抗氧化、抗炎症关键基因的表达影响,通过动物实验验证其对于毛发生长的作用。结果 防脱育发草本精粹(250μg/ml)能显著促进DPC增殖与抗氧化能力,显著抑制白细胞介素-6(IL-6)和促进抗氧化相关基因:谷氨酸-半胱氨酸连接酶修饰剂亚基基因(GCLM)、血红素加氧酶1基因(HMOX1)、铁蛋白重链1基因(FTH1)、铁蛋白轻链基因(FTL)、NAD(P)H:醌氧化还原酶1(NQO1)的表达,差异有统计学意义(P <0.05)。动物实验验证显示,防脱育发草本精粹缩短了小鼠毛囊的休止期。结论 该防脱育发草本精粹显著促进DPC的增殖、抗氧化及抗炎症能力,缩短毛囊的休止期和促进毛发生长。

Polyphenol-Rich Olive Mill Wastewater Extract and Its Potential Use in Hair Care Products

In this work, the influence of phenol-enriched olive mill wastewater (OMWW) extract on hair growth was investigated in vitro on human follicle dermal papilla cells. OMWW has already shown great potential for use in skincare products, and its high polyphenol content is predestined to have a positive effect on hair growth. The studies included caffeine, a positive modulator of hair growth, and dihydrotestosterone, which causes hair loss in vivo, as controls. The impact of the investigated compounds on hair growth was evaluated by studies on cell viability and proliferation, the release of growth factors (insulin-like growth factor-1 and vascular endothelial growth factor), and the reduction of reactive oxygen species formation. OMWW showed a positive influence on the proliferation of the human follicle dermal papilla cells. Moreover, the extract leads to a significantly increased secretion of insulin-like growth factor-1, and a considerable reduction in reactive oxygen species formation was observed. Overall, our results show that the investigated phenol-enriched OMWW extract is a promising ingredient for hair care to improve hair growth, prevent hair loss due to oxidative stress and maintain a healthy scalp.

Vitamin B12 Activates the Wnt-Pathway in Human Hair Follicle Cells by Induction of <i>beta</i>-Catenin and Inhibition of Glycogensynthase Kinase-3 Transcription

Background and Objectives: Micrograft transplantation is accompanied by a transient induction of telogen in transplanted hair follicles (HF), which might be avoided by supporting the metabolic pathways of the micrograft during the ex vivo period. Vitamin B12 (cobalamin) has been suggested to influence HF growth and cycling in humans, but the mechanisms are unclear. Method: HFs were obtained from patients undergoing routine micrograft transplantation and were cultured for 5 days in Dulbecco’s modified Eagles Medium, supplemented with different amounts of vitamin B12. Hair shaft elongation (HSE) of the isolated HFs as well as quantitative changes of mRNA for beta-catenin, glykogensynthase kinase-3 (GSK-3) and TCF/Lef-1 in HF cells were determined. Results: In vitro HSE demonstrated a dose dependent induction of HSE after stimulation with 2.5 ug/ml and 25 ug/ml vitamin B12 (6.2 +/- 2.1% and 15.4 +/- 3.8% respectively). A dose dependent induction of beta-catenin-mRNA could be demonstrated in cultured HFs after stimulation with 2.5 ug/ml and 25 ug/ml vitamin B12 (fold change compared to DMEM: 9.5 +/- 2.7, p < 0.05 and 23.1 +/- 7.4, p < 0.01;respectively). Concomitantly the amounts of GSK-3 were significantly reduced after stimulation with 25 ug/ml vitamin B12 (fold change compared to DMEM: 0.76 +/- 0.12, p < 0.05). Conclusions: Our data demonstrate a hair growth promoting effect of vitamin B12 in vitro. This effect is accompanied by the modulation of intracellular signal transduction molecules of the wnt-pathway and might promote hair growth after micrograft transplantation.

乳酸促脂溢性脱发小鼠毛发生长研究

通过除去C57BL/6小鼠背部毛发及涂抹睾酮建立脂溢性脱发模型,研究乳酸对脂溢性脱发小鼠毛发生长,毛囊生长周期及生长因子的影响。将60只C57BL/6小鼠随机分为正常组,模型组,米诺地尔酊阳性组,乳酸高、中、低剂量组,并分别在脱毛区涂抹相对应的药物。连续给药24天,记录小鼠皮肤颜色变化时间、脱毛区毛发生长状况以及毛囊组织学特征和毛囊数目的变化;使用Elisa试剂盒检测小鼠体内KGF,VEGF和TGF-β1的质量浓度。结果表明,与模型组、正常组相比较,乳酸能显著促进脂溢性脱发小鼠毛发生长,增加小鼠毛发重量和给药实验区域皮肤毛囊数量,同时上调小鼠皮肤中KGF和VEGF质量浓度,降低小鼠皮肤中TGF-β1质量浓度,差异有统计学意义(P<0.05),其中以中剂量10g/L乳酸溶液效果最佳,可加快小鼠毛发生长、促进小鼠毛囊生长期转化进程,抑制脂溢性脱发症状,其疗效与阳性药米诺地尔酊效果相当(P>0.05),可制成日用洗护产品预防脱发,为脂溢性脱发患者提供更多选择。