• Title/Summary/Keyword: skin epidermis

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Comparison of Plant Growth and Morphological Characteristics Among the Korean Ginseng, the American Ginseng and the Bamboo Ginseng (고려인삼, 미국삼 및 죽절삼의 생육 및 형태적 특성 비교)

  • 정열영;이명구
    • Journal of Ginseng Research
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    • v.22 no.2
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    • pp.147-153
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    • 1998
  • An investigation was conducted to ascertain the basic information on characteristics of growth and morphological characters among the Korean (Panax. ginseng), the American (Panax. quinquefolium) and the Bamboo (Panax. japonicus) ginseng. In aerial parts growth of the ginseng species by age, The Korean ginseng and American ginseng's stem and leaf growth was alike in 2-4 years old, but growth cycle changed in 6 years old. The Korean ginseng was more vigorous than the American ginseng. The Korean ginseng roots were highly observed in ratio of red skin roots among three species, whereas The American ginseng roots were highly infected by root rot. It seems to be variable depending on growing stage and species. The Korean ginseng flowered about the middle of May, the American ginseng early June, and the Bamboo ginseng was late of May, The berry color of the ginseng species was observed, The Korean and American ginseng's mature berry color was red, The Bamboo ginseng's berry was three type of color and shape. In root characteristics of the seedling, Korean (p. ginseng), American (p. quinquefolium) ginseng's root shape was similarity in type, the bamboo ginseng showed different type, which root length and root weight was smaller than those of ginseng. In morphological characters of Leaf surface, pollen, and stoma, the Korean ginseng and American ginseng had crystal rosette on epidermis cell, but the Bamboo ginseng didn't has crystal rosette. Pollen shape observed tricolpate pollen and size was media type among the ginseng species, and also guard cell was anomocytic type, which were observed by scanning electronic microscope.

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A case of Discoid Lupus Erythematosus (DLE) in a Golden Retriever dog (골든 리트리버종에서 발생한 Discoid Lupus Erythematosus(DLE)의 발생 증례)

  • Won, Dong-Sun;Hong, Eun-Sil;Jung, Man-Bok;Kim, Hyun-Jin;Park, Nam-Yong;Park, Chul;Jung, Byung-Hyun;Park, Hee-Myung
    • Journal of Veterinary Clinics
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    • v.20 no.1
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    • pp.142-144
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    • 2003
  • A 3-year-old, 38 kg, male Golden Retriever dog was referred to Veterinary Teaching Hospital of Konkuk University because of chronic formation of crust on nasal bridge and planum nasale. Abnormalities of physical examination included hyperkeratosis on the footpad, symmetrical alopecia and erythma around olecranon, and crust on nasal bridge and planum nasale. Results of the hematological examination showed a mild leukopenia with neutropenia, monocytosis, and mild lymphocytosis. In addition, the result of serum chemistry and thyroid gland profile were normal. Results of fungal and bacterial culture was negative. Acanthocytes in cytological evaluation of nasal crust were observed in direct microscopic examination. Examination of skin biopsy exhibited vacuolation of basal cell layer, degeneration and necrosis of basal cell with defluxion, mild monocytes filtrations between epidermis and dermis, and mild acanthosis with hyperkeratinization. Based on results of examination described above, Discoid Lupus Erythematosus (DLE) was diagnosed.

The Effect of Red Ginseng on Epidermal Melanocytes in Ultraviolet B-irradiated Mice (자외선 B를 조사한 마우스 표피멜라닌세포 변화에 대한 홍삼의 효과)

  • Lee, Hae-June;Kim, Se-Ra;Kim, Joong-Sun;Moon, Chang-Jong;Kim, Jong-Choon;Bae, Chun-Sik;Jang, Jong-Sik;Jo, Sung-Kee;Kim, Sung-Ho
    • Journal of Ginseng Research
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    • v.30 no.4
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    • pp.188-193
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    • 2006
  • We induced the activation of melanocytes in the epidermis of C57BL/6 mice by ultraviolet B (UVB) irradiation and observed the effect of red ginseng (RG) on the formation, and decrease of UVB-induced epidermal mel-anocytes. C57BL/6 mice were irradiated by UVB $80mJ/cm^2$ (0.5 mW/sec) daily for 7 days, and RG was intraperitoneally or topically applied pre- or post-irradiation. For the estimation of change of epidermal melanocytes, light microscopic observation with dihydroxyphenylalanine (DOPA) stain was performed. Split epidermal sheets prepared from the ear of untreated mice exhibited 11-16 $melanocytes/mm^2$, and one week after UV irradiation, the applied areas show an increased number of strongly DOPA-positive melanocytes with stout dendrites. But intraperitoneal or topical treatment with RG before each irradiation interrupted UVB-induced pigmentation and resulted in a marked reduction in the number of epidermal melanocytes as compared to radiation control skin. The number and size of DOPA-positive epidermal mel-anocytes were also significantly decreased in intraperitoneally injected or topically applicated group after irradiation with RG at 3rd and 6th weeks after irradiation. The present study suggests the RG as inhibitor of UVB-induced pigmentation and depigmenting agent.

Anatomical Changes and Anthocyanin Contents of the Exocarp by Ethyl Oleate Treatment on 'Merlot' Grapes (Ethyl oleate 처리에 의한 'Merlot' 포도 과피의 안토시아닌 함량과 해부학적 변화)

  • Lee, Byul-Ha-Na;Kwon, Yong-Hee;Shin, Kyoung-Hee;Park, Hee-Seung
    • Horticultural Science & Technology
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    • v.28 no.3
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    • pp.370-373
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    • 2010
  • Preharvest treatment with 4% ethyl oleate on 'Merlot' ($Vitis$ $vinifera$ L.) grape reduced the thickness of the epidermal and hypodermal layers with significantly enhanced pigmentation. Thickness of the skin in treated berries was $90-107{\mu}m$, whereas those in control berries were $126-189{\mu}m$. Decreases in the thickness of epidermal and hypodermal cell layers seemed to be due to cellular death or dehydration by rapid senescence after the treatment. Immediate change observed in treated berries was the deformation of the wax that appeared melted resulting in color improvement. Total anthocyanin was also increased by ethyl oleate treatment. Separate forms of anthocyanins, acylated and methoxylated anthocyanins increased, whereas hydroxylated anthocyanins tended to decrease.

Anti-inflammatory effect of Baecksunpijibujabokhap-bang in Atopic dermatitis model mice (아토피 피부염을 유발한 마우스에서 백선피지부자복합방의 항염증 효과)

  • Sim, Boo-Yong;Kim, Sung-Hwan;Kim, Dong-Hee
    • The Korea Journal of Herbology
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    • v.29 no.3
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    • pp.51-58
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    • 2014
  • Objectives : In order to investigate the efficacy of BJBB on atopic dermatitis, various anti-inflammatory factors were studied. Methods : In-vitro, inflammatory mediators, such as MTT and nitric oxide were detected after the addition of LPS with or without BJBB in Raw 264.7 cells. In-vivo, in order to verify the effectiveness of BJBB in atopic dermatitis animal model, its role in inflammation factors and histological changes were observed in NC/Nga mice. Results : BJBB showed cell viability of 100% or higher in all concentration in Raw 264.7 cells. BJBB inhibited LPS-induced productions of inflammatory mediators nitric oxide in RAW 264.7cells. BJBB treated group showed significant decrease in the expression of IL-1b, IL-6 and TNF-a by 40%, 80% and 44% respectively. Also the group showed decrease in the transcription of IL-1b, IL-6 and TNF-a mRNA in spleen by 41%, 93% and 39% respectively. BJBB treated group showed significant decrease in WBC, neutrophil, lympocyte and monocytes immune cell ratio in blood by 54%, 63%, 57% and 86% respectively. BJBB treated group showed decrease in the expression of IgG by 39% respectively. Also, infiltration of adipocytes into skin was suppressed and the thickness of epidermis and dermis were relatively decreased in the BJBB treated group. Conclusion : BJBB has an anti-inflammatory effects in NC/Nga mouse. Thus, these results suggested a beneficial effect of BJBB in treatment with Atopic dermatitis and inflammatory.

Pigmented Pilomatricoma on the Ear Resembling Vascular Tumor before Surgery: A Case Report (혈관기원종양으로 오인된 귓바퀴의 색소 모기질종: 증례 보고)

  • Seok Beom Lim;In Chang Koh;Hoon Kim;Kun Young Kwon;Soo Yeon Lim
    • Korean Journal of Head & Neck Oncology
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    • v.39 no.2
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    • pp.31-34
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    • 2023
  • Pilomatricoma is characterized by a semi-transparent epidermis, especially pigmented pilomatricoma, containing melanocytes in basaloid cells, which are dark and purple, resembling vessel-derived skin masses. If the vascularity at doppler ultrasound is high before surgery, it may be misdiagnosed. A 10-year-old female patient visited our clinic because of a mass in the right ear triangular fossa. Ultrasonography was performed, and a vascular-origin tumor was suspected because of the high vascularity. The excised mass was diagnosed as pigmented pilomatricoma by a pathologist. Pilomatricoma is mistaken for other masses owing to its various phenotypes. A misdiagnosis can lead to misdirected strategies which can cause delayed treatment and can result in an increase in the size of the pilomatricoma, making the sequalae of surgery more complicated. For proper treatment, careful examination and evaluation are required before surgery.

The effect of two Terpenoids, Ursolic acid and Oleanolic acid on epidermal permeability barrier and simultaneously on dermal functions

  • Lim Suk Won;Jung Sung Won;Ahn Sung Ku;Kim Bora;Ryoo Hee Chang;Lee Seung Hun
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.29 no.2 s.43
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    • pp.205-232
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    • 2003
  • Ursolic acid (UA) and Oleanolic acid (ONA), known as urson, micromerol and malol, are pentacyclic triterpenoid compounds which naturally occur in a large number of vegetarian foods, medicinal herbs, and plants. They may occur in their free acid form or as aglycones for triterpenoid saponins, which are comprised of a triterpenoid aglycone, linked to one or more sugar moieties. Therefore UA and ONA are similar in pharmacological activity. Lately scientific research, which led to the identification of UA and ONA, revealed that several pharmacological effects, such as antitumor, hepato-protective, anti-inflammatory, anticarcinogenic, antimicrobial, and anti-hyperlipidemic could be attributed to UA and ONA. Here, we introduced the effect of UA and ONA on acutely barrier disrupted and normal hairless mouse skin. To evaluate the effects of UA and ONA on epidermal permeability barrier recovery, both flanks of 8-12 week-old hairless mice were topically treated with either 0.01-0.1 mg/ml UA or 0.1-1 mg/ml ONA after tape stripping, and TEWL (Transepidermal water loss) was measured . The recovery rate increased in those UA or ONA treated groups (0.1 mg/ml UA and 0.5 mg/ml ONA) at 6 h more than $20\%$ compared to vehicle treated group (p<0.05). Here, we introduced the effects of UA and ONA on acute barrier disruption and normal epidermal permeability barrier function. For verifying the effects of UA and ONA on normal epidermal barrier, hydration and TEWL were measured for 1 and 3 weeks after UA and ONA applications (2mg/ml per day). We also investigated the features of epidermis and dermis using electron microscopy (EM) and light microscopy (LM). Both samples increased hydration compared to vehicle group from f week without TEWL alteration (p<0.005). EM examination using RuO4 and OsO4 fixation revealed that secretion and numbers of lamellar bodies and complete formation of lipid bilayers were most prominent $(ONA{\geq}UA>Vehicle)$. LM finding showed that thickness of stratum corneum (SC) was slightly increased and especially epidermal thickening and flattening was observed (UA>ONA>Veh). We also observed that UA and ONA stimulate epidermal keratinocyte differentiation via $PPAR\;\alpha$. Protein expression of involucrin, loricrin, and filaggrin increased at least 2 and 3 fold in HaCaT cells treated with either $ONA\;(10{\mu}M)$ or UA $(10{\mu}M)$ for 24h respectively. This result suggested that the UA and ONA can improve epidermal permeability barrier function and induce the epidermal keratinocyte differentiation via $PPAR\;{\alpha}$. Using Masson-trichrome and elastic fiber staining, we observed collagen thickening and elastic fiber elongation by UA and ONA treatments. In vitro results of collagen and elastin synthesis and elastase inhibitory activity measurements were also confirmed in vivo findings. These data suggested that the effects of UA and ONA related to not only epidermal permeability barrier functions but also dermal collagen and elastic fiber synthesis. Taken together, UA and ONA can be relevant candidates to improve epidermal and dermal functions and pertinent agents for cosmeseutical applications.

Analysis of ceramide metabolites in differentiating epidermal keratinocytes treated with calcium or vitamin C

  • Kim, Ju-Young;Yun, Hye-Jeong;Cho, Yun-Hi
    • Nutrition Research and Practice
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    • v.5 no.5
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    • pp.396-403
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    • 2011
  • Ceramides (Cer) comprise the major constituent of sphingolipids in the epidermis and are known to play diverse roles in the outermost layers of the skin including water retention and provision of a physical barrier. In addition, they can be hydrolyzed into free sphingoid bases such as $C_{18}$ sphingosine (SO) and $C_{18}$ sphinganine (SA) or can be further metabolized to $C_{18}$ So-1-phosphate (S1P) and $C_{18}$ Sa-1-phosphate (Sa1P) in keratinocytes. The significance of ceramide metabolites emerged from studies reporting altered levels of SO and SA in skin disorders and the role of S1P and Sa1P as signaling lipids. However, the overall metabolism of sphingoid bases and their phosphates during keratinocyte differentiation remains not fully understood. Therefore, in this study, we analyzed these Cer metabolites in the process of keratinocyte differentiation. Three distinct keratinocyte differentiation stages were prepared using 0.07 mM calcium (Ca$^{2+}$) (proliferation stage), 1.2 mM Ca$^{2+}$ (early differentiation stage) in serum-free medium, or serum-containing medium with vitamin C (50 ${\mu}L$/mL) (late differentiation stage). Serum-containing medium was also used to determine whether vitamin C increases the concentrations of sphingoid bases and their phosphates. The production of sphingoid bases and their phosphates after hydrolysis by alkaline phosphatase was determined using high-performance liquid chromatography. Compared to cells treated with 0.07 mM Ca$^{2+}$, levels of SO, SA, S1P, and SA1P were not altered after treatment with 1.2 mM Ca$^{2+}$. However, in keratinocytes cultured in serum-containing medium with vitamin C, levels of SO, SA, S1P, and SA1P were dramatically higher than those in 0.07- and l.2-mM Ca$^{2+}$-treated cells; however, compared to serum-containing medium alone, vitamin C did not significantly enhance their production. Taken together, we demonstrate that late differentiation induced by vitamin C and serum was accompanied by dramatic increases in the concentration of sphingoid bases and their phosphates, although vitamin C alone had no effect on their production.

Expression, Purification and Transduction of PEP-1-Botulinum Neurotoxin Type A (PEP-1-BoNT/A) into Skin

  • Kim, Dae-Won;Kim, So-Young;An, Jae-Jin;Lee, Sun-Hwa;Jang, Sang-Ho;Won, Moo-Ho;Kang, Tae-Cheon;Chung, Kwang-Hoe;Jung, Hyun-Ho;Cho, Sung-Woo;Choi, Jin-Hi;Park, Jin-Seu;Eum, Won-Sik;Choi, Soo-Young
    • BMB Reports
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    • v.39 no.5
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    • pp.642-647
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    • 2006
  • Botulinum neurotoxin A (BoNT/A) has been used therapeutically to treat muscular hypercontractions and sudomotor hyperactivity and it has been reported that BoNT/A might have analgesic properties in headache. PEP-1 peptide is a known carrier peptide that delivers fulll-ength native proteins in vitro and in vivo. In this study, a BoNT/A gene were fused with PEP-1 peptide in a bacterial expression vector to produce a genetic in-frame PEP-1-BoNT/A fusion protein. The expressed and purified PEP-1-BoNT/A fusion proteins were efficiently transduced into cells in a time- and dose-dependent manner when added exogenously in a culture medium. In addition, immuno-histochemical analysis revealed that PEP-1-BoNT/A fusion protein efficiently penetrated into the epidermis as well as the dermis of the subcutaneous layer, when sprayed on mice skin. These results suggest that PEP-1-BoNT/A fusion protein provide an efficient strategy for therapeutic delivery in various human diseases related to this protein.

Effects of Nipa fruticans Wurmb Extract on Inhibition of UVB-Induced DNA Damage and MMP Expression (해죽순(Nipa fruticans Wurmb) 추출물의 UVB 유도 DNA 손상 및 MMP 발현 억제 효과)

  • So Yeon Han;Tae Won Jang;Da Yoon Lee;Ji-Sun Moon;Yong-Shin Kim;Jae Ho Park
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.50 no.3
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    • pp.271-278
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    • 2024
  • The human skin is an organ that protects the body from physical and chemical factors. The skin is the largest and most massive of the body's organs and is composed of the epidermis, dermis, and subcutaneous tissue. Constant UV exposure to the skin can cause DNA damage, oxidation of proteins, and contribute to adult diseases. Nypa fruticans Wurmb (NF), rich in phytochemicals (polyphenols and flavonoids), has been traditionally used for treating respiratory and other diseases. This study investigated the effects of NF ethyl acetate fraction (ENF) on DNA damage healing and inhibition of wrinkle-related factors in UVB-stimulated Hs68 cells. Westernblotting was used to assess the expression of DNA damage-related proteins and wrinkle-related protein factors. In addition, the wound recovery capability of ENF was confirmed through wound-healing experiments. ENF significantly suppressed the expression of DNA damage-related proteins Phosphorylated H2AX (γ-H2AX), checkpoint kinase 2 (Chk2), protein53 (p53), and Phosphorylated protein53 (p-p53). Furthermore, ENF inhibited the expression of wrinkle-related proteins matrix metalloproteinase-1 (MMP-1), matrix metalloproteinase-3 (MMP-3), and matrix metalloproteinase-9 (MMP-9). High concentrations of ENF also enhanced wound healing in Hs68 cells. ENF is thought to have the potential to heal DNA damage by significantly suppressing the expression of γ-H2AX, Chk2, p53, and p-p53, as well as to inhibit wrinkle formation by suppressing the expression of MMP-1, MMP-3, and MMP-9. These results suggest that ENF can be used as a natural resource to suppress skin damage caused by UVB by regulating the γ-H2AX, Chk2, p53, and MMP pathways in Hs68 cells induced by UVB.