• 한국잠사곤충학회지
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• 11호
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• pp.23-29
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• 1970

이 실험은 견직물의 결함인 방추효과를 좋게 하기 위하여 견포에 Formaldehyde를 작용 시켰으며 이때 사용되는 $CH_3$COOH, CaC$_2$, HCHO, $Na_2$CO$_3$, NH$_4$OH, NaOH, NaHCO$_3$양과 반응액의 온도 및 시간의 변경에 따라 달라지는 견포의 W.R 효과를 측정하였다. 그리고 면과 Viscose rayon 포도 견포와 동시에 처리하여 비교시험 하므로서 가장 효율적인 견포의 주름저항성 개선조건을 모색한 결과 아래와 같은 결론에 도달했다. (1) 각 직포의 W.R 효과를 향상시킬 수 있는 최적의 온도는 견이 75$^{\circ}C$, 면이 35~43$^{\circ}C$이며 Viscose rayon포의 작용은 75$^{\circ}C$이하에서는 온도와 상관성이 없다. (2) 최적의 반응온도 처리로 인하여 견은 처리전보다 11.0%, 면은 33.4%의 W.R 효과를 향상시킬 수 있었다. (3) 견.면 및 Viscose rayon 포의 W.R 효과는 직물에 따라 최적의 반응시간이 존재한다. 즉 HAC Hydride를 사용한 최적 견은 60~90분, 면은 120분, Viscose rayon은 90분이었으며 HAC Anhydride를 사용한 경과 견은 60분, 면은 120분, 그리고 Viicose rayon은 40분이었다. (4) 최적의 반은시간에 의하여 견은 16.6%, 면은 25.0% 그리고 Viscose rayon은 13.3%의 W.R 효과를 향상 시킬 수 있었다. (5) 견과 Viscose rayon 포의 W.R 효과는 HAC Hydride를 사용하는 것 보다 Anhydride를 사용하는 것이 더욱 효과적이었다. (6) 반응정도에 있어서는 HAC Hydride를 사용하는 것 보다 HAC Anhydride를 사용하는 것이 더욱 빨랐다. (7) HCHO의 양에 의한 W.R 효과를 보면 건은 HCHO의 양이 10~14m1 때가, 면은 18m1 대가 그리고 Viscose rayon 포는 14~18m1 때가 가장 좋았으며 이때 견은 처리전 보다 8.3%, 면포는 21.5% 그리고 Viscose rayon 포는 7.0%의 W.R 효과를 얻을 수 있었다. (8) 최대의 W.R 효과를 위한 최적의 HCl 사용량은 견과 면포가 모두 14m1이며 견은 처리전 보다 22.2%, 면은 19.5%의 W.R 효과가 향상되었다. (9) 중화제로서 NaHCO$_3$ 4.2gr을 넣었을 때 견의 W.R는 83.3%, 면포는 61.1%로 가장 W.R 효과가 좋았다. 그러나 NaHCO$_3$를 더 이상 첨가하는데 따라 W.R 효과는 견.면포 모두 저하하였다. (10) 중화제로서 NaOH와 NH$_4$OH를 첨가하는 경과 첨가량이 증가하는데 따라 W.R 효과도 저하하나 첨가량이 어느 한계점(견 3.3ml, 면 3.3~6ml)을 지나 더욱 증가하면 W.R 효과도 다시 양호하여지는 현상을 볼 수 있었다. 이와같은 경향은 특히 견과 면포에서 현저하였으며, 이 결과로 보아 견과 면포는 반응액의 (H$^{＋}$)을 전부 중화시키고 남은 NaOH와 NH$_4$OH의 잔여(H$^{-}$)에서도 Formaldehyde와 작용할 수 있지 않는가 추측된다. (11) 견포는 Curing온도가 비교적 낮을 때 W.R 효과가 좋았고 면포는 높을 때 좋았다. (12) 이 실험의 결과 견포의 W.R를 94%RK지 (처리전보다 22% 증가)향상시킬 수 있었다는 점으로 보아 앞으로 견포의 W＆W 성을 개선할 수 있는 가능성을 충분히 보여주고 있다.

• 한국약용작물학회지
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• 제26권2호
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• pp.119-126
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• 2018

Background: The flowering plant Hippophae rhamnoides L. has been used for many studies on fruit or leaf extracts. This study was conducted to investigate the development of a new cosmetic material from H. rhamnoides fruits and leaves that have by antioxidant, anti-inflammatory and wrinkle improvement activities. Methods and Results: The antioxidant abilities of H. rhamnoides extracts, including of a water-soluble fruit powder (FW), a fatsoluble fruit powder (FF), a supercritical extract of fruit by-product (BS), and a mixture of leaf and fruit (MIX), were investigated in vitro. A DPPH radical assay for antioxidant activity was performed for these fractions alongside assay to evaluate the total phenolic and flavonoid content (TPC and TFC). As expected, the MIX had the highest DPPH radical scavenging activity ($RC_{50}=10.27{\mu}g/m{\ell}$), and the TPC and TFC also were highest in MIX ($225.7mg{\cdot}GAE/g$, and $25.18mg{\cdot}QE/g$, respectively). Nitric oxide (NO) production in LPS-induced RAW264.7 cells was estimated and the results indicated an over 75% decrease of NO production in FF and MIX. In other assays, the highest elastase inhibitory activity was found in FW. Conclusions: These results revealed that H. rhamnoides extracts have a high potential for antioxidant, anti-inflammatory and antiwrinkle activities. H. rhamnoides products are suggested to be applied as the functional materials of cosmetic ingredients.

• 대한화장품학회:학술대회논문집
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• 대한화장품학회 2003년도 IFSCC Conference Proceeding Book I
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• pp.741-762
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• 2003

Ginsenosides, the major active ingredients of ginseng, show a variety of biomedical efficacies such as anti-aging, anti oxidation and anti-inflammatory activities. To understand the effects of compound K (20-O-D-glucopyranosyl-20 (S)-protopanaxadiol), one of the major metabolite of ginsenosides on the skin, we assessed the expression level of ∼ 100 transcripts in compound K-treated HaCaT cells using cDNA microarray analysis. Compound K treatment induced differential expression of 21 genes, which have been reported to be involved in the organization of ECM structure as well as defense responses in human skin cells. One of the most interesting findings is 2-fold increase in hyaluronan synthase2 (HAS2) gene expression by compound K. We found that change in expression of HAS2 gene represents a specific response of HaCaT cells to compound K because hyaluronan synthase 1, 3 was not changed by treatment with compound K. We also demonstrated that the compound K effectively induced hyaluronan synthesis in human skin cells and hairless mouse skin. The human clinical study indicates that topical application of compound K-containing oil-in-water emulsion showed improvement of xerosis, wrinkle and fine lines in the aged skin. We concluded that compound K has anti-aging effects by the induction of HAS2 gene expression and following hyaluronan synthase.

• 한방안이비인후피부과학회지
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• 제31권3호
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• pp.97-106
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• 2018

Objectives : Recently, Thread Embedding Acupucnture (TEA) targeting under dermis became known to be effective for facial wrinkles and folds; its practice has begun in clinics. The introduction of a new form of TEA is continuing, and 'Volume TEA' is introduced recently. Therefore, we would like to report on the improvement of facial wrinkles by using the recently introduced 'volume TEA'. Methods : We reviewed the medical records of three patients who received 'Volume TEA' treatment at a Korean medical clinic, the photographs taken before and after the procedure were corrected using a Photoshop program and the length of the each wrinkles and folds were measured. Results : The length of wrinkles measured in all three cases decreased. Especially, the decrease of the length of the nasolabial folds was obvious. In case 1, the length of the nasolabial folds of 177mm and 97mm were reduced to 94mm and 63mm, respectively. In the case 2, the length of the nasolabial folds of 155mm and 155mm were reduced to 0mm and 70mm, respectively, after the procedure. In case 3, the length of the nasolabial folds of 170mm and 50mm decreased to 38mm and 37mm after the procedure, respectively. Conclusions : At present, it seems that the ongoing accumulation of relevant studies on the efficacy and safety of wrinkle and folds of TEA seems necessary. This study also has some significance in the level of case report.

• Archives of Plastic Surgery
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• 제42권6호
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• pp.721-728
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• 2015

Background We conducted this clinical study to compare the efficacy and safety between Neuramis Deep and Restylane in the correction of nasolabial folds. Methods In this phase III, randomized, multi-center, double-masked, matched-pairs, active-controlled trial (ClinicalTrials.gov Identifier: NCT01585220), we evaluated a total of 67 subjects (n=67). All the subjects underwent Neuramis Deep treatment on one side and Restylane on the contralateral side of the bilateral nasolabial folds at a ratio of 1:1. To compare the efficacy of Neuramis Deep and Restylane, we evaluated the Wrinkle Severity Rating Scale scores and those of the Global Aesthetic Improvement Scale. In addition, we compared the safety of Neuramis Deep and Restylane based on adverse events, physical examination, and clinical laboratory tests. Results Neuramis Deep was not inferior in improving the nasolabial folds as compared with Restylane. In addition, there was no significant difference in the efficacy between Neuramis Deep and Restylane. There were no significant differences in safety parameters between Neuramis Deep and Restylane. Conclusions In conclusion, our results indicate that Neuramis Deep may be a safe, effective material for improving the nasolabial folds. However, further studies are warranted to compare the tolerability of Neuramis Deep and Restylane based on histopathologic findings.

• Journal of Applied Biological Chemistry
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• 제61권3호
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• pp.283-290
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• 2018

맥문동탕 열수추출물의 용매분획물을 이용하여 1-1-diphenyl-2-picryl-hydrazyl radical scavenge, 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) radical scavenge, elastase, tyrosinase 억제 효과를 검증하였고 그 결과 에틸아세테이트 분획물(MW-EA)에서 가장 우수한 저해활성을 보여주었다. 세포를 이용한 활성 검증에서는 MW-EA를 처리하였을 때 ROS 저해활성에서 34% ($100{\mu}g/mL$), MMPs 저해 50% ($100{\mu}g/mL$) 이상, 미백 활성에서는 tyrosinase를 25% ($50{\mu}g/mL$) 억제하는 것을 확인 하였다. 따라서 맥문동탕은 피부개선 소재로서 개발 가능성이 높다고 사료된다.

• Journal of Microbiology and Biotechnology
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• 제28권8호
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• pp.1391-1400
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• 2018

Angelica tenuissima root has historically been used as a traditional medicine in Korea. Previous studies have identified the anti-melanogenic effects of the extract of A. tenuissima root fermented by Aspergillus oryzae (FAT). This study investigated the protective effects of FAT against ultraviolet light B exposure (UVB; $30mJ/cm^2$) in HaCaT (human keratinocyte) or Hs68 (human foreskin fibroblast) skin cells. FAT treatment was able to stimulate wound healing rate at the basal condition. FAT also favored the maintenance and/or improvement of extracellular matrix impairment caused by UVB irradiation through: 1) upregulation of procollagen Type-1 synthesis and secretion; 2) suppression of MMP-1 and elastase expression. FAT was able to play a role in the attenuation of inflammatory responses caused by UVB irradiation via upregulation of photo-protective hemeoxygease-1 and suppression of proinflammatory cyclooxygenase-2 expression. After further verification of the anti-photoaging potential of FAT, it could be utilized as an effective ingredient in anti-aging and anti-wrinkle cosmetics.

• 융합정보논문지
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• 제9권12호
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• pp.286-293
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• 2019

본 연구에서는 식약청 고시 원료인 레티놀, 레티닐팔미테이트, 아데노신, 폴리에톡실레이티드레틴아마이드 4종류와 항 노화의 효능을 가진 천연 원료인 금송, 하고초, 맨드라미, 브라질린, 여뀌, 황기, 연교, 자근, 대황, 육종용에 대한 연구 동향을 살펴보았다. 현재까지의 항 노화 연구는 주로 콜라겐 생성과 엘라스타아제 합성 억제 기전을 중심으로 이루어지고 있는 것이 확인되었다. 하지만, 피부의 노화 과정은 여러 가지 원인에 의해서 발생하는 것으로 볼 때, 다양한 기전에 맞춰 피부 항노화에 도움을 줄 수 있는 안전하고 효과적인 천연 원료를 활용한 항노화 연구가 지속적으로 이루어져야할 것으로 사료되어 진다.

• 한국정보통신학회논문지
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• 제25권2호
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• pp.221-227
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• 2021

최근 발광다이오드를 이용한 마스크 형식의 피부 관리기에 관한 관심이 증가하고 있으며, 특정 파장의 광학적 자극은 노출 광량 및 파장대, 광선 조사 시간을 조절함으로써, 피부 미백, 여드름 치료, 탄력 및 주름 개선 등과 같은 다양한 효과를 보인다고 알려져 왔다. 특히, 피부 노화 억제, 세포증식 유도, 피부의 염증 완화 등을 목적으로 하는 마스크의 경우 각각 다른 파장의 광원이 사용된다. 본 논문에서는 마이크로컨트롤러를 사용하여 피부재생 마스크에 활발하게 사용되는 발광다이오드 제어시스템을 개발하였다. 단일 또는 복합적으로 피부 섬유아세포에 인가하여, 세포의 증식에 어떠한 효과가 있는지 확인한다. 또한, 세포증식률에 긍정적 효과를 보이는 특정 파장대를 찾아 다양한 자극에 기인한 세포증식 효과를 확인하고, 영상처리를 활용한 정량분석법을 제시하여 그 효과를 평가하였다.

• Archives of Plastic Surgery
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• 제49권3호
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• pp.296-303
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• 2022

Background In recent years thread lift has become widespread; however, existing methods need to improve their long-term outcome, which requires considering topographic anatomy of face and neck, especially the ligamentous apparatus. This study aims to assess the effectiveness and safety of an innovative method of one-time three-step thread facelift, which provides an additional support to the ligamentous structures of the upper, middle, and lower thirds of the face and neck. Methods The study included 357 patients aged 32 to 67 years with various morphotypes of aging. The original method of thread lift was applied, and its effectiveness was followed up for to 2 years. The Wrinkle Severity Rating Score (WSRS) and Global Aesthetic Improvement Scale (GAIS) scores were used for assessment by investigators, independent observers, and patients. Statistical significance was determined using paired t-test and chi-square test. Results The mean WSRS score was 3.88 ± 0.88 before the thread lift, 1.93 ± 0.81 one month after the procedure, and 2.36 ± 0.85 after 2 years of follow-up. The mean GAIS was 4.80 ± 0.04 one month after thread lift, and 4.01 ± 0.04 after 2 years, while in the patients' assessment Global Satisfaction Scale was 4.86 ± 0.02 and 4.10 ± 0.02, respectively. There were no clinically significant complications throughout the observation period. Conclusion The new method of one-time three-step thread fixation of the soft tissues of the face and neck demonstrated a high degree of satisfaction by both experts and patients after 2 years of follow-up. It showed high efficacy and safety, including in the group of patients with pronounced age-related changes of the skin of face and neck.