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Synergistic Effect of Minoxidil and Retinol on Hair Growth in Human Dermal Papilla Cells
( Hyeon Gyeong Yoo ),( In Young Chang ),( Se Rah Lee ),( Soon Jin Choi ),( Hyun Keol Pyo ),( Ji Yun Kim ),( Oh Sang Kwon ),( Jin Ho Chung ),( Kwang Hyun Cho ),( Hee Chul Eun ),( Kyu Han Kim ) 대한피부과학회 2005 초록집 Vol.43 No.20
The Additive Effects of Minoxidil and Retinol on Human Hair Growth <i>in Vitro</i>
Yoo, Hyeon Gyeong,Chang, In-Young,Pyo, Hyun Keol,Kang, Yong Jung,Lee, Seung Ho,Kwon, Oh Sang,Cho, Kwang Hyun,Eun, Hee Chul,Kim, Kyu Han Pharmaceutical Society of Japan 2007 Biological & pharmaceutical bulletin Vol.30 No.1
<P>Minoxidil enhances hair growth by prolonging the anagen phase and induces new hair growth in androgenetic alopecia (AGA), whereas retinol significantly improves scalp skin condition and promotes hair growth. We investigated the combined effects of minoxidil and retinol on human hair growth <I>in vitro</I> and on cultured human dermal papilla cells (DPCs) and epidermal keratinocytes (HaCaT). The combination of minoxidil and retinol additively promoted hair growth in hair follicle organ cultures. In addition, minoxidil plus retinol more effectively elevated phosphorylated Erk, phosphorylated Akt levels, and the Bcl-2/Bax ratio than minoxidil alone in DPCs and HaCaT. We found that the significant hair shaft elongation demonstrated after minoxidil plus retinol treatment would depend on the dual kinetics associated with the activations of Erk- and Akt-dependent pathways and the prevention of apoptosis by increasing the Bcl-2/Bax ratio.</P>
Perifollicular Fibrosis: Pathogenetic Role in Androgenetic Alopecia
Yoo, Hyeon Gyeong,Kim, Jin Sook,Lee, Se Rah,Pyo, Hyun Keol,Moon, Hyung In,Lee, Jong Hee,Kwon, Oh Sang,Chung, Jin Ho,Kim, Kyu Han,Eun, Hee Chul,Cho, Kwang Hyun Pharmaceutical Society of Japan 2006 Biological & pharmaceutical bulletin Vol.29 No.6
<P>Androgenetic alopecia (AGA) is a dihydrotestosterone (DHT)-mediated process, characterized by continuous miniaturization of androgen reactive hair follicles and accompanied by perifollicular fibrosis of follicular units in histological examination. Testosterone (T: 10<SUP>−9</SUP>—10<SUP>−7</SUP> <SMALL>M</SMALL>) treatment increased the expression of type I procollagen at mRNA and protein level. Pretreatment of finasteride (10<SUP>−8</SUP> <SMALL>M</SMALL>) inhibited the T-induced type I procollagen expression at mRNA (40.2%) and protein levels (24.9%). T treatment increased the expression of transforming growth factor-beta 1 (TGF-β1) at protein levels by 81.9% in the human scalp dermal fibroblasts (DFs). Pretreatment of finasteride decreased the expression of TGF-β1 protein induced by an average of T (30.4%). The type I procollagen expression after pretreatment of neutralizing TGF-β1 antibody (10 μg/ml) was inhibited by an average of 54.3%. Our findings suggest that T-induced TGF-β1 and type I procollagen expression may contribute to the development of perifollicular fibrosis in the AGA, and the inhibitory effects on T-induced procollagen and TGF-β1 expression may explain another possible mechanism how finasteride works in AGA.</P>
Breeding of Spray Rose Cultivar ‘ Pink Shine ’ with Pink Color and Longer Vase Life
Gyeong Rok Yang,Won Hee Kim,Se Jin Kim,Hyeon Hwan Jung,Bong Sik Yoo,Hae Jin Lee,Ki Young Park 한국화훼학회 2020 화훼연구 Vol.28 No.3
농촌진흥청 국립원예특작과학원에서는 2017년에 절화 수명이 길고 수량이 많은 연한 핑크색의 스프레이 장미 ‘Pink Shine’ 을 육성하였다. 모본은 ‘Fire Flash’로 붉은 복색의 스프레이 장미이며, 부본은 ‘Pink Charm’으로 핑크색이며 흰가루병에 강하다. 이 두 품종을 2012년 인공교배하여 이듬해인 2013년 1월에 파종, 9cm 포트 묘에 정식하여 관능 평가 실시 후 도태시켜 39개체 의 실생을 얻었다. 이후 화형, 화색, 꽃잎 수, 절화수량, 병 저항성 등을 고려하여 2015년까지 5개체를 선발하여 유사 품종인 ‘Missha’를 대조로 하여 2017년까지 3차에 걸친 특성 검정을 실시하였다. 그 결과 가장 우수한 ‘원교 D1-325’를 최종선발하여 ‘Pink Shine’으로 명명 후 2018년 3월 22일 품종보호출원(제 2018-212호)하여 2019년 6월 21일에 품종보호권(제7786호)이 등록되었다. 화색은 연한 핑크색(RHS, R36D)이며 잎의 색은 녹색(RHS, G137A)으로 대조 품종 ‘Missha’와 동일하였다. 꽃잎 수는 67.8개, 화폭 5.4cm, 화고 3.2cm로 ‘Missha’보다 컸으며 평방미터당 연간 절화수량은 131본, 절화수명은 15.3일로 ‘Missha’ 보다 우수하였다. In 2017 ‘Pink Shine’, a light pink spray rose cultivar,’ was bred by the National Institute of Horticulture & Herbal Science for the purposes of higher yield and longer vase l ife. This cultivar was developed by crossing ‘Fire Flash’, a reddish bicolor spray, with ‘Pink Charm’, a pink-colored spray cultivar resistant to powdery mildew. The crossing was performed in 2012 in anticipation of the pink colored spray and strong growth characteristics. Seeds were sown in January 2013, and planted in 9 cm pots. After the sensory evaluation, 39 seedlings were selected for the first selection group. Considering the flower shape, color, the number of petals, yield, and disease resistance, five lines were selected until 2015. Eventually, the ‘Wonkyo D1-325’ line was selected, and named ‘Pink Shine’ in 2017 through the first, second, and third characteristic tests for the 3 years from 2015 to 2017. An application for plant variety protection was registered on June 21, 2019 (No. 7786). The flower color of ‘Pink Shine’ is light pink (RHS, R36D), and the leaf color is green (RHS, G137A). The number of petals, the width of the flower, and the height of the flower were 67.8 cm, 5.4 cm, and 3.2 cm, respectively, which were all higher than ‘Missha’. The annual yield of the cut flower of ‘Pink Shine’ was 131 stems/m2 per year, and the vase life was superior to ‘Missha’.