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Dynamic Wnt5a expression in murine hair follicle cycle and its inhibitory effects on follicular in vivo

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Asian Pacific Journal of Tropical Medicine 2014年第4期7卷 285-288页

作者： De-Ren Fang Zhong-Fa Lv Gang Qiao Department of Dermatology the First Affiliated HospitalCollege of MedicineZhejiang University Department of Dermatology the Second Affiliated HospitalCollege of MedicineZhejiang University Department of Dermatology the Third People's Hospital of Hanghzhou

Objective:To analyze the dynamic expression of Wnt family member 5A(Wingless-type MMTV integration Wnt site family,member 5a)in murine hair cycle and its inhibitory effects on follicle in vivo.Methods:Situ hybridization in full-thickness skin was used to observe the change of mouse protein expression in different growth stages,and Ad-Wnt5a was injected after defeathering to observe the hair follicle growth in vivo.Results:The Wnt5a mRNA was expressed at birth,and was firstly increased then decreased along with the progress of the hair cycle.It reached the peak in advanced stage of growth cycle(Phair follicle in vivo,indicating that it is antagonistic to Wnts pathway and interferes the growth of follicle together.

关键词： Wnt5a hair follicle cycle Iinhibition Proliferation

Mucin-like glycopolymer gels in electrosensory tissues generate cues which direct electrolocation in amphibians and neuronal activation in mammals

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Neural Regeneration Research 2019年第7期14卷 1191-1195页

作者： James Melrose Raymond Purves Bone and Joint Research Laboratory Kolling InstituteNorthern Sydney Local Health District Graduate School of Biomedical Engineering University of New South Wales Sydney Medical School NorthernThe University of Sydney Faculty of Medicine and Health University of SydneyRoyal North Shore Hospital

Mucin-like glycoproteins have established roles in epithelial boundary protection and lubricative roles in some tissues.This mini-review illustrates alternative functional roles which rely on keratan sulphate and sialic acid modifications to mucin glycopolymers which convey charge properties suggestive of novel electroconductive properties not previously ascribed to these polymers.Many tumour cells express mucin-like glycopolymers modified with highly sulphated keratan sulphate and sialic which can be detected using diagnostic biosensors.The mucin-like keratan sulphate glycopolymer present in the ampullae of lorenzini is a remarkable sensory polymer which elasmobranch fish(sharks,rays,skate) use to detect weak electrical fields emitted through muscular activity of prey fish.Information on the proton gradients is conveyed to neuromast cells located at the base of the ampullae and mechanotransduced to neural networks.This ampullae keratan sulphate sensory gel is the most sensitive proton gradient detection polymer known in nature.This process is known as electrolocation,and allows the visualization of prey fish under conditions of low visibility.The bony fish have similar electroreceptors located along their lateral lines which consist of neuromast cells containing sensory hairs located within a cupula which contains a sensory gel polymer which detects distortions in fluid flow in channels within the lateral lines and signals are sent back to neural networks providing information on the environment around these fish.One species of dolphin,the Guiana dolphin,has electrosensory pits in its bill with similar roles to the ampullae but which have evolved from its vibrissal system.Only two terrestrial animals can undertake electrolocation,these are the Duck-billed platypus and long and short nosed Echidna.In this case the electrosensor is a highly evolved innervated mucous gland.The platypus has 40,000 electroreceptors around its bill through which it electrolocates food species.The platypus has poor eyesight,is a noctur

关键词： mucin glycopolymers keratan sulfate electrolocation monosulphated keratan sulfate neuroregulation glycosaminoglycan neurosensory hair cells neurosensory proteoglycan

Protective effects of Ecklonia cava extract on the toxicity and oxidative stress induced by hair dye in in-vitro and in-vivo models

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Journal of Oceanology and Limnology 2019年第3期37卷 909-917页

作者： OH Jae-Young RYU Bo-Mi YANG Hye-Won KIM Eun-A LEE Jung-Suck JEON You-Jin Department of Marine Life Science Jeju National UniversityJeju 63243Republic of Korea Jeju International Marine Science Center for Research & Education Korea Institute of Ocean Science and TechnologyJeju 63349Republic of Korea Research Center for Industrial Development of Seafood Gyeongsang National UniversityTongyeong 53064Republic of Korea

Oxidative hair dyes containingρ-phenylenediamine(PPD)are reported to induce an allergic reaction by promoting oxidative stress when absorbed through the skin.Despite the associated risk,these hair dyes remain popular owing to their convenience and sharpness of color.This makes it important to minimize the cytotoxicity and oxidative stress induced by PPD-containing hair dyes.Ecklonia cava extract has been evaluated in different studies for its protective effects against external stress in fibroblasts and keratinocytes.Our study was aimed at using in-vitro and in-vivo models to investigate the extract’s effects on cytotoxicity of and oxidative stress induced by PPD-containing hair dyes.Analysis of CIEL*a*b*Color space was first used to determine the range of E.cava extract that would not interfere with the coloring ability of the dye upon addition.Subsequently,the set ranges of E.cava extract(5% and 7%)were added to the hair dye and their toxicity assessed by evaluating the viability of fibroblasts and keratinocytes.The effects on developmental phenotypes and induction of oxidative stress by hair dye were evaluated and compared with those of hair dyes containing different contents of E.cava extract using an in-vivo zebrafish model.Our results showed that E.cava extract in hair dye could significantly decrease the cytotoxicity and levels of oxidative stress caused by hair dyes containing PPD in both in-vitro and in-vivo models.These results suggest that the addition of 7% E.cava extract to 250μg/mL hair dye does not interfere with the coloring ability of the dye while showing significant protective eff ects against the hair dye.The study proposes that the use of E.cava extract as an adduct to hair dyes containing PPD reduces the cytotoxicity and oxidative stress induced by these hair dyes.

关键词： hair dye Ecklonia cava cytotoxicity oxidative stress in-vitro and in-vivo models

Apoptosis in inner ear sensory hair cells

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Journal of Otology 2017年第4期12卷 151-164页

作者： Seth Morrill David Z.Z. He Creighton University 2500 California Plaza Omaha NE 68102 USA

Apoptosis, or controlled cell death, is a normal part of cellular lifespan. Cell death of cochlear hair cells causes deafness; an apoptotic process that is not well understood. Worldwide, 1.3 billion humans suffer some form of hearing loss, while 360 million suffer debilitating hearing loss as a direct result of the absence of these cochlear hair cells(Worldwide Hearing, 2014). Much is known about apoptosis in other systems and in other cell types thanks to studies done since the mid-20 th century. Here we review current literature on apoptosis in general, and causes of deafness and cochlear hair cells loss as a result of apoptosis. The family of B-cell lymphoma(Bcl) proteins are among the most studied and characterized. We will review current literature on the Bcl2 and Bcl6 protein interactions in relation to apoptosis and their possible roles in vulnerability and survival of cochlear hair cells.

关键词： Apoptosis hair cell Bcl2 Bcl6

Evaluation of the safety of hair essence containing 0.05% purified bee venom on the skin and eyes of rabbits

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Journal of Traditional Chinese Medicine 2020年第1期40卷 67-72页

作者： Mi Kyung Lim Eun Hye Han Sang Ho Lee Jee Hee Kim R&D Center KoreaeundanGyeonggi-do 13207Republic of Korea

OBJECTIVE:To investigate the safety of hair essence containing 0.05%purified bee venom(HE-PBV)on the skin and eyes of New Zealand White rabbits.METHODS:HE-PBV which contained 0.05%PBV,purified water,and glycerin,was used as the test substance.The skin-irritation test(SIT)and eye-irritation test(EIT)were conducted according to the Draize method.On the SIT,HE-PBV(0.5 m L)dropped gauze was attached both intact and abraded skin for 24 h.The other side of the skin was used as control.After 24 and 72 h,the treatment site was observed and scored according to evaluation criteria for skin reactions.On the EIT,the rabbits were divided into two groups:eye-washed(three rabbits)and non-eye-washed(six rabbits).HE-PBV(0.1 m L)was squirted into the right eye of rabbits.The left eye was untreated and used as a control.Then,20-30-s later,the eyes of rabbits in the eye-washed group were washed with^50 m L of physiologic(0.9%)salt solution.Then,1,2,3,4 and 7 d after the start of the EIT,the eyes and behavior of the rabbits were observed.The degree of eye irritation elicited by HE-PBV was determined in three steps and then the criteria of the classification of eye-irritation scores.RESULTS:The SIT revealed erythema and edema at the site of HE-PBV application.At 72 h,the body weight of rabbits was reduced slightly,but other symptoms(except erythema and edema)were not observed.The Primary Irritation Index score was0.6,and HE-PBV was deemed to be a slight irritant.The EIT did not show mortality or body-weight fluctuation,but hyperemic conjunctiva and eyelid closure were noted after HE-PBV administration.Except for these results,the score for the ophthalmic response on days 1,2,3,4 and 7 was 0,and HE-PBV was deemed to be a non-irritant.CONCLUSION:These data suggest that HE-PBV did not elicit eye irritation,but was a slight irritant to the skin of rabbits;the latter slight would have been due to the excipients used in manufacture of the hair essence because PBV has been shown to be safe.

关键词： Alopecia Bee Venoms hair essence Skin irritancy tests Eye irritancy tests Complementary therapies

Keep quiet—how stress regulates hair follicle stem cells

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Signal Transduction and Targeted Therapy 2021年第11期6卷 3161-3162页

作者： Sven R.Quist Jennifer Quist Department of Dermatology University HospitalOtto-von-Guericke UniversityMagdeburgGermanyl Dermatology ClinicHelix Medical Excellence CenterMainzGermany

In a recent paper published in Nature,Choi et al.1 demonstrated that corticosterone,the mouse equivalent to human cortisol,controls the activity of hair follicle stem cell(HFCS)quiescence by regulating the gene expression of Gas6.Mammalian stem cells have the unique ability to repair,generate and maintain tissues throughout their lifetime.Stem cells under autonomous and non-autonomous regulators are located in specific niches where this regulation can be synchronized.2 The hair follicle is a highly interactively regulated mini-organ that enables the study of stem cell functions.

关键词： autonomous hair maintain

Studies on Different Hydrolysis Procedures for Drugs of Abuse in hair

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Chinese Chemical Letters 1999年第3期10卷 239-242页

作者： Ma, C Zhou, TH Chinese Acad Med Sci Inst Mat Med Beijing 100050 Peoples R China Peking Union Med Coll Beijing 100050 Peoples R China

1.IntroductionDrugsofabusehavebecomeamajorprobleminoursocietyinrecentyearsandhaveresultedinwidespreadabuse.Thedetectionofdrugsofabuseinbiologicalsamplesisoneoftheprimaryfunctionsofaclinicalorforensictoxicologylaborato... 详细信息

关键词： Drugs of abuse hydrolysis hair

REDUCING hairFALLING AND PILLING STUDY IN RABBIT hair/WOOL WORSTED KNITWEAR——CHOOSING AND EVALUATING OF FINISHING AGENT

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Journal of China Textile University(English Edition) 1995年第2期12卷 8-13页

作者：王璐杨冠军王俦曾泳春陈霞明 China Textile Univ Shanghai China

In the paper, the effects of reducing hairfalling and pilling were compared in rabbit hair/woolworsted knitwear by adding various finishing agents. Reducing rates of hairfalling and pilling wereof 6.7％—66.7％ and 9.3％—73.5％ respectively, while fabric handle changed from grade 1 to grade5 in 12 treating method groups. To evaluate the severity of hairfalling and pilling and the conditionof fabric handle of knitwear objectively, quantitatively and comprehensively, we advocated usingthe concept of "geueral evaluating value(GEV)". The results indicated that GEVs of acrylategroups were low, but GEVs of silicone resin groups were high, especially the group with finishingagent solution containing 7％ silicone resin No.3 in which reducing rates of pilling and hairfallingwere of 53％ (National standard: grade 4.5) and 62％, respectively, and washing stability was verygood, while knitwear’s fabric handle almost did not change.

关键词： rabbit hair knitted fabric pilling tendency hairfalling finishing agent fabric handle general evaluating value.

The potential of miR-183 family expression in inner ear for regeneration,treatment,diagnosis and prognosis of hearing loss

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Journal of Otology 2017年第2期12卷 55-61页

作者： Mohammad-Reza Mahmoodian-sani Ameneh Mehri-Ghahfarrokhi Research Center for Molecular Medicine Hamadan University of Medical SciencesHamadanIran Dept.of Genetics and Molecular Medicine Hamadan University of Medical SciencesHamadanIran Cellular and Molecular Research Center Shahrekord University of Medical SciencesSharekordIran

miRNA-183 family, in normal biology, is expressed in a harmonious and stable manner in the neurosensory organs and cells. Studies have also shown that miRNA-183 family, in different pathways, affects the neurosensory development, maintenance, survival and function. In addition, it has potential neuroprotective effects in response to neurosensory destructive stimulations. miRNA-96 mutation causes hereditary deafness in humans and mice, and therefore affects the inner ear activity and its maintenance. Certain roles have been identified for mi R-96 in the maintenance and function of the inner ear. The comparison of the target genes of family-183 in transcriptomes of newborn and adult hair cells shows that hundreds of target genes in this family may affect development and maintenance of the ears. Identifying the genes that are regulated by miRNA-183 family provides researchers with important information about the complex development and environmental regulation of the inner ear, and can offer new approaches to the maintenance and regeneration of hair cells and auditory nerve.

关键词： miRNA-183 family Hearing loss miRNA Inner ear hair cell