• Title/Summary/Keyword: hair follicle growth

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Morphological Studies on Hair Growth Effect of Samultang-gamibang (사물탕가미방(四物湯加味方)이 원형탈모 생쥐의 발모효과에 관한 형태학적 연구)

  • Kwon, Gang-Joo;Lee, Chang-Hyun;Lee, Moon-Won;Mun, Yeun-Ja;Choi, Doo-Ho;Lee, Hak-Jae;Kim, Ho-Min;Woo, Won-Hong
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.19 no.3
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    • pp.696-704
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    • 2005
  • This experiment examined the effect of Samultang-gamibang (SGB) on hair growth in spontaneous alopecia areata C57BL/6N mice. We first investigated hair growth effect of SGB compare to control groups after apply to oral administration for 10 weeks and regional treatment in skin for last 4 weeks. We second investigated the number of hair follicle and mast cells after treatment of SGB in spontaneous alopecia areata C57BL/6N mice for 10 weeks. We third investigated immunoreactive density of neuropeptides in skin of spontaneous alopecia areata C57BL/6N mice by immunohistochemical methods. The results were as follows : Hair growing effect of experimental group was observed from 7 weeks after administration of SGB (87.5%). In experimental group, the number of mast cells and eosinophils was significantly decreased compare to control group. Immunoreactive density of substance P and corticotropin releasing factor (CRF) in skin of experimental group was weakly stained in epidermis and subcutaneous tissue compare to control group. Immunoreactive density of CRF-receptor (CRF-R), CRF-binding protein (CRF-BP) in skin of experimental group was increased in epidermis, sebaceous gland, inner root sheath, outer root sheath and secondary hair germ epithelium compare to control group. These results suggest that SGB may be used in treatment of alopecia areata.

EFFECT OF LOW LEVEL LASER THERAPY ON HEALING OF OPEN SKIN WOUNDS IN RATS (백서 연조직에 저수준 레이저 요법시 창상 치유기전에 관한 연구)

  • You, Sang-Woo;Kim, Kyung-Wook;Lee, Jae-Hoon;Kim, Chang-Jin
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • v.26 no.5
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    • pp.481-489
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    • 2000
  • This research was focused on overall examination of tissue alteration, wound healing promotion. After the hair on the dorsal surface was shaved, $5{\times}5mm$ oval skin defect was formed. Experimental wounds of right side were irradiated on every day for 90 second with Ga-Al-As semi-conductor laser. Left side wounds served as control group. The rats were sacrificed on the 1st, 3rd, 5th, 7th, 14th, 21th day. For light microscopically, parafin section were stained with H&E, MT. The outcomes were as follows : 1. On 1st day, experimental and control group were seen acute inflammatory cell infiltration, edema. 2. On the 3rd days, both groups were seen crust development, collagen, blood vessel proliferation. 3. On the 5th days, experimental group were reduced edema and inflammatory cell infiltration than control group. 4. On the 7th days, both groups were observed edema, inflammatory cell infiltration disappearance and keratinocytes motility from wound defect. 5. On the 14th days, experimental group appeared collagen, blood vessel proliferation and hair follicle than control group. 6. On the 21th days, both groups were seen normal status re-epithelization. According to the above results, The wound-healing stimulated by laser radiation involves an increased rate of epithelial growth. LLLT was confirmed that it has fibroblast, blood vessel proliferation, influence initial wound healing process.

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Effect of Black Rice (Oryza sativa L. indica) Ethanolic Extract on Tyrosinase Activity and Antioxidant Activity Related to Melanin Production (흑미의 주정 추출물이 melanin 생성과 관련된 tyrosinase 및 항산화 활성에 미치는 영향)

  • Lee, Eunbeen;Kim, Moon-Moo
    • Journal of Life Science
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    • v.28 no.5
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    • pp.532-539
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    • 2018
  • Hair graying is processed by loss of melanin production caused by the decrease of activity and number of melanocyte and the accumulation of hydrogen peroxide ($H_2O_2$) in the hair follicle with increase of age. The purpose of this study was to investigate the effect the Black oryzasativa ethanolic extract (BLEE) on the melanin production. In this study BLEE at $8{\mu}g/ml$ or more showed a significant 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging activity and reduction power. BLEE at $16{\mu}g/ml$ or more showed promoted tyrosinase activity and melanin production. In addition BLEE scavenged intracellular $H_2O_2$ in 2',7'-dichlorodihydrofluorescein (DCF) fluorescence assay in B16F1 cells. However, Western blot analyses displayed that BLEE decreased the expression level of catalase, but no effect on the expression level of tyrosinase, tyrosinase associated protein-1 (TRP-1), tyrosinase associated protein-2 (TRP-2) and microphthalmia-associated transcription factor (MITF) transcription factor involved in melanogenesis. Thus, the promotive effect of BLEE on melanin production is attributed to the increase of tyrosinase activity and the reduction of intracellular $H_2O_2$ level. In conclusion, BLEE played a key role in in promoting melanin production, which suggests that the BLEE could be applied as a potential functional material in the development of hair care cosmetics related to the promotion of melanin production for the growth of black hair.

In Vitro Anti-aging and Hair Follicle Dermal Papilla Cells Activation Effects of Usnea diffracta Vain Extract (송라 추출물의 세포 수준에서 항노화 및 모유두세포 활성화 효과)

  • Min Jeong Kim;Won Yeoung Choi;Hyun Woo Shim;Eun Jin Shin;Jung No Lee;Sung Min Park;Hwa Sun Ryu
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.50 no.1
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    • pp.37-48
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    • 2024
  • Songla (Usnea diffracta Vain.) is one of the lichens belonging to the genus Usnea, and pharmacological activities such as antioxidant, antimicrobial, anti-inflammatory, anti-tumor and cardiovascular protection have been reported in previous studies, but its efficacy in skin and hair is not well known. In this study, the effect of Usnea diffracta extract (UDE) on anti-aging and dermal papilla cell proliferation was verified in vitro. As a result of the experiment, it was confirmed that the UDE significantly reduced the expression of MMP-1 and the activity of MAPKs (ERK, p38, JNK) and AP-1 (c-Fos, c-Jun), which were increased by UVA in HDFn. In addition, the UDE significantly increased the proliferation of HFDPC and significantly increased the mRNA expression of VEGF and KGF, which are hair growth factors. Accordingly, the phosphorylation of ERK/CREB involved in hair proliferation and expression of growth factors was increased in a concentration-dependent manner. The main component represented by the main peak was separated and purified using Prep LC by concentrating the UDE, which was confirmed as diffractaic acid through NMR and Mess analysis. Isolated diffractaic acid significantly reduced the expression of MMP-1 increased by UVA in HDFn and increased the proliferation of HFDPC in a concentration-dependent manner. The result suggest that UDE proved its usability as a natural cosmetic material with anti-aging and dermal papilla cell activation effects.

Malignant Proliferating Trichilemmal Tumor - A Case Report - (악성 증식성 모낭 종양 - 증례 보고 -)

  • Hong, Ki-Do;Kim, Jae-Young;Ha, Sung-Sik;Sim, Jae-Chun;Cho, Hye-Jae;Choi, Yoon-Ho
    • The Journal of the Korean bone and joint tumor society
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    • v.15 no.1
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    • pp.65-68
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    • 2009
  • Proliferating trichilemmal tumor(PTT) is a rare neoplasm derived from the outer root sheath of the hair follicle. Malignant transformation is rare, but abrupt enlargement of size, infiltrative growth, and non-scalp location are suggestive of malignant PTT. Histopathologic characteristics of malignant PTT are nuclear atypia, pleomorphism, and mitotic figures. Recurrence and metastasis have been documented in malignant PTT. Wide resection of the tumor with the normal tissue and accurate follow-up is the treatment of choice of the both malignant and benign PTT. We report a 51-year-old man with the mass on right 5th finger distal phalanx for 7 years. The tumor was excised with middle phalangiectomy, and based on the histopathologic findings of the tumor, this case was diagnosed as mailignant PTT. We cannot detect recurrence and metastasis because the patient was lost to follow-up.

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Suppressive effect of Senecio iscoensis Hieron. extract in Propionibacterium acnes-induced inflammatory signaling pathway (Senecio iscoensis Hieron. 추출물의 Propionibacterium acnes에 의한 염증반응 억제효과)

  • Shin, Jin Hak;Lee, Eun Hye;Kim, Seon Sook;Yi, Dong-Keun;Roh, Jin Kyung;Seo, Su Ryeon
    • Korean Journal of Microbiology
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    • v.55 no.3
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    • pp.206-212
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    • 2019
  • Propionibacterium acnes (P. acnes) lives in the hair follicles and pores, and it uses cell debris, sebum and metabolic byproducts of surrounding skin tissues as energy and nutrients. Increased production of sebum due to sebaceous hyperplasia or blockage of the follicle can cause growth and proliferation of P. acnes. The rapid growth of P. acnes in follicles produces cell damage, metabolic byproducts and bacterial chips, which can cause inflammation. In this study, we examined the possibility of Senecio iscoensis Hieron. (S. iscoensis) extract to regulate P. acnes-induced inflammatory signaling pathways. We observed that S. iscoensis extract effectively inhibited P. acnes-induced pro-inflammatory cytokine expressions such as IL-$1{\beta}$, TNF-${\alpha}$, and iNOS in mouse macrophage cell line Raw 264.7. The inhibitory effect of S. iscoensis in pro-inflammatory cytokine levels was accompanied by the inhibition of the transcription factors NF-${\kappa}B$ and NF-AT. However, S. iscoensis did not alter the P. acnes-induced MAPK signaling pathways. This study first suggests the potential of using S. iscoensis extract as an alternative agent for the treatment of acne.

THE ROLE OF TRANSCRIPTION FACTOR MSX2 AND DLX5 IN CALVARIAL BONE AND SUTURE DEVELOPMENT (두개골 및 두개봉합부 초기발육과정에서의 전사조절인자인 Msx2와 Dlx5의 역할)

  • Song, Min-Ho;Park, Mi-Hyun;Nam, Soon-Hyeun;Kim, Young-Jin;Ryoo, Hyun-Mo;Kim, Hyun-Jung
    • Journal of the korean academy of Pediatric Dentistry
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    • v.30 no.3
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    • pp.391-405
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    • 2003
  • Craniosynostosis, known as a premature fusion of cranial sutures, is a developmental disorder characterized by precocious differentiation and mineralization of osteoblasts in the calvarial sutures. Recent genetic studies have demonstrated that mutation in the homeobox gene Msx2 causes Boston-type human craniosynostosis. Additionally, the phenotype of Dlx5 homozygote mutant mouse presents craniofacial abnormalities including a delayed ossification of calvarial bone. Furthermore transcription of osteocalcin, a mature osteoblast marker, is reciprocally regulated by the homeodomain proteins Msx2 and Dlx5. These facts suggest important roles of osteocalcin, Msx2 and Dlx5 genes in the calvarial bone growth and suture morphogenesis. To elucidate the function of these molecules in the early morphogenesis of mouse cranial sutures, we have first analyzed by in situ hybridization the expression of osteocalcin, Msx2 and Dlx5 genes in the developing parietal bone and sagittal suture of mouse calvaria during the embryonic (E15-E18) stage. Osteocalcin mRNA was found in the periosteum of parietal bones from E15, and gradually more highly expressed with aging. Msx2 mRNA was intensely expressed in the sutural mesenchyme, osteogenic fronts and mildly expressed in the dura mater during the embryonic stage. Dlx5 mRNA was intensely expressed osteogenic fronts and the periostem of parietal bones. To further examine the upstream signaling molecules of transcription factor Msx2 and Dlx5, we have done in vitro experiments in E15.5 mouse calvarial explants. Interestingly, implantation of BMP2-, BMP4-soaked beads onto the osteogenic fronts after 48 hours organ culture induced etopic expressions of Msx2 and Dlx5 genes. On the other hand, overexpression of $TGF{\beta}1$, GDF-6, -7, FGF-2, -4 and Shh did not induce the expression of Msx2 and Dlx5. Taken together. these data indicate that transcription factor Msx2 and Dlx5 play critical roles in the calvarial bone and suture development, and that BMP siganling is involved in the osteogenesis of calvarial bones and the maintenance of cranial sutures through regulating these two transcriotpn factors. Furthermore, different expression patterns between Msx2 and Dlx5 suggest their specific functions in the osteoblast differentiation.

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