• 한국식품영양과학회지
• /
• 제28권6호
• /
• pp.1332-1338
• /
• 1999

Intermolecular collagen cross links stabilize collagen fibrils and are necessary for normal tensile strength in collagen fibrils. Once the fibrils are aligned, hydroxyllysine, hydroxylysine derived aldehyde modified enzymatically, reacts with hydroxylysine to form the dehydrodihydroxylysinonorleucine (DHLNL), an immature crosslink. Pyridinoline, one of matured cross links is presumably formed nonenzymatically through condensation of DHLNL and hydroxylysine residue. It is widely distributed in hard connective tissues such as cartilage, bone and tendon. L ascorbic acid(AsA) is well known to be required for the enzymatic hydroxylation of proline and lysine in collagen fibrils. The purpose of this study is to clarify the role of AsA on the biosynthesis of DHLNL in vitro. We examined the effect of AsA on the formation of hydroxylysine and DHLNL in collagen. Pyridinoline and DHLNL were measured as a function of time. The contents of DHLNL was increased, reached maximum within 2 hr and was held until 24 hr, then it decreased slowly. On the contrary, pyridinoline increased gradually after 24 hr and continued to increase for 2 weeks. Moreover, the contents of DHLNL remarkably decreased at 60 min after incubation, the contents of DHLNL was decreased by addition of AsA or dehydroascorbic acid(DHA). These results suggest that the supplementation of AsA causes decrease in DHLNL formation and pyridinoline formed by nonenzymatic reaction of DHLNL.

• 대한화장품학회지
• /
• 제40권4호
• /
• pp.365-371
• /
• 2014

새로운 주름개선제 성분을 찾기 위해서 본 연구에서는 사람 피부 섬유아세포의 세포독성, 콜라겐 생합성, matrix metalloproteinase-I (MMP-1) 및 elastase 저해활성에 대한 Lactobacillus plantarum으로 발효된 오미자 발효액의 주름개선 효과를 평가하였다. 먼저, 오미자 추출물은 L. rhamnosus으로 $37^{\circ}C$에서 1일 동안 발효하였다. 발효물의 세포독성은 cytopathic effect reduction 방법에 의해 평가하였다. 콜라겐 생합성에 대한 발효물의 영향은 procollagen type-IC peptide EIA kit에 의해 평가하였으며, matrix metalloproteinase-I(MMP-1)에 대한 발효물의 영향은 Matrix Metalloproteinase-1 Biotrack activity Assay Kit에 의해 평가하였다. Elastase inhibition assay는 기질로써 N-Suc-$(Ala)_3$-nitroanilide을 사용하여 기질 반응에 의해 평가하였다. 결과로써 오미자 발효물은 사람 피부 섬유아 세포에 대해 $100{\mu}g/mL$의 농도에서 세포독성을 나타내지 않았다. 또한 오미자 발효물은 콜라겐 생합성을 촉진시켰으며, MMP-1의 저해 효과를 나타내었다(p < 0.05). Elastase inhibition assay에서 오미자 발효물의 $IC_{50}$은 $36.4{\mu}g/mL$이었다. 그러므로 본 연구에서 오미자 발효물은 주름개선 효과를 보유하고 있으며, 이것은 피부의 주름개선을 위해 사용가능하리라 사료된다.

• 대한화장품학회:학술대회논문집
• /
• 대한화장품학회 2003년도 IFSCC Conference Proceeding Book I
• /
• pp.192-202
• /
• 2003

The wrinkles correspond to the most obvious expression of skin ageing and are manifested by changes on the organization and dermal structure. In the extracellular matrix, decreased quantities of collagens and glycosaminoglycans as well as a deterioration of the fibrillary network is noted, result in a reduction of dermal thickness. In addition, the activity of the collagenases increases in contrast to the synthesis of collagen fibers. Nor are cells spared during the aging process. We thus studied and compared the contractile capacity as well as the synthesis capacity of normal human fibroblasts and human fibroblasts obtained from biopsies of forehead wrinkles. The capacity of the fibroblasts to be adhered to the collagen network and to maintain a three-dimensional structure of dermis was studied on a model of equivalent dermis. The metabolic activity was studied by evaluating the capacities of synthesis of collagen I, main component of dermis. Human fibroblasts resulting from the forehead wrinkle contract less the gel of collagen than the normal human fibroblasts and present an activity of biosynthesis of collagen I less important than normal human fibroblasts. These results show that fibroblasts with aging present a deceleration of their metabolic activity and lose their capacity of adhesion to collagen fibers thus limiting the possibility of organizing the dermal tissue. We investigated the potential of an active ingredient able to compensate for the reduction of the metabolic activity and to restore the contractile capacity of fibroblasts obtained from forehead wrinkles. This effect was compared with a reference molecule: the vitamin C.

• 인간식물환경학회지
• /
• 제22권1호
• /
• pp.39-52
• /
• 2019

To evaluate the protective effect of collagen peptide-coated coffee extract on skin aging, cell viability was measured with a MTT assay using cultured CCD-986sk fibroblasts, and its effect on wrinkles in the skin of hairless mice induced by UVB-irradiation was examined. In addition, its effect on procollagen synthesis and anti-oxidative, and its inhibitory activity against collagenase, elastase, tyrosinase and MMP-1 were analysed. After the 30-minute topical treatment, the animals were exposed to UVB irradiation (60-100 mJ/cm²) for 4 weeks and its intensity increased during the period. Under the experimental conditions set in this study, the skin thickness of hairless mice significantly decreased (11.8-21.3%) compared to the control group. Based on these results, the prolonged oral intake of a collagen peptide mixture with coffee is expected to significantly increase the synthesis of procollagen in dermal fibroblasts, thereby contributing to the alleviation of wrinkling and lowered elasticity due to structural damage to the dermal layer caused by UV. The oral intake of collagen-coated coffee contributes to increasing collagen biosynthesis in a dose-dependent manner and alleviates the symptoms of thickened keratin caused by UV irradiation. However, it did not inhibit the enzymes involved in skin aging, whitening, wrinkle improvement, and antioxidation. Based on the these results, it can be concluded that the intake of collagen peptide-coated coffee extract can be utilized as an alternative material for the prevention or treatment of diseases associated with photoaging.

• 대한한방부인과학회지
• /
• 제22권1호
• /
• pp.53-78
• /
• 2009

Purpose: In this study, we investigated the anti-thrombotic and antiinflammatory efficacy of "Gamijoukyungtang(GJKT)". Methods: We studied inhibitory effects of platelet aggregation, FXa activation, $TXB_2$ and $PGE_2$ biosynthesis and suppressive effects of GPIIb/IIIa activity and oxidative damage, pro-inflammatory cytokine reduction effects of 'GJKT(by press extractor)/GJKT-1(by pressless extractor)' in vitro. Also, we studied suppression of pulmonary embolism, AV shunt model in rats and shortening of Rat tail bleeding time in vivo. Results: GJKT/GJKT-1 extract showed inhibitory effects on GPIIb/IIIaactivities and platelet aggregation induced by ADP, epinephrine, collagen and arachidonic acid. They suppressed biosynthesis of $PGE_2$ but GJKT-1 only supressed biosynthesis of $TXB_2$. In FXa assay, they inhibited activation of FXa. they suppressed pulmonary embolism triggered by collagen and epinephrine. In AV shunt model, they decreased the weights of AV shunt thrombus. they inhibited pro-inflammatory cytokines and decreased oxidative damages caused by DPPH. Conclusion: We confirmed the anti-thrombosis, and ant-inflammatory efficacy of 'GJKT(by press extractor)/GJKT-1(by pressless extractor)'.

• 대한한방부인과학회지
• /
• 제21권1호
• /
• pp.55-82
• /
• 2008

Purpose: In this study, we evaluated anti-inflammatory activity and anti-thrombosis effect of Manbunbang(MBB) prescribed to chronic PID patients. Methods: We studied inhibitory effect of platelet aggregation, suppression effect of GPIIb/IIIa activity and inhibitory effect of $TXB_2$ and $PGE_2$ biosynthesis which were caused by ADP, epinephrine, collagen and arachidonic acid in vitro. And suppression of pulmonary embolism, changes of related factors in dextran coagulation condition model and anti-oxidative effect of oxidative damage were studied in vivo. Results: MBB extract showed LD50 of $200\;{\mu}g/ml$ or higher in mouse lung fibroblast cells, and significantly decreased the GPT and GPT level in dextran coagulation condition model compared to the control. MBB extract showed dose-dependent inhibition effect on platelet coagulation induced by ADP, epinephrine, collagen, arachidonic acid. MBB extract showed dose-dependent inhibition effect on GPIIb/IIIa activities compared to the control. MBB extract significantly suppressed TXB2 and PGE2 biosynthesis compared to the control. MBB extract suppressed pulmonary embolism triggered by collagen and epinephrine by 37.5% compared to the control. MBB extract significantly suppressed the decrease of speed of bloodstream caused by blood coagulation in dextran coagulation condition model compared to the control. Concluson : The results strongly suggest the anti-inflammatory activity of Manbunbang through anti-thrombus. Various applications using Manbunbang on inflammatory diseases are anticipated. Anti-oxidative efficacy comparison data between the Manbunbang prescription and the drug compositions may be used as important clinical information, and further investigation of anti-oxidative activities of Chrysanthemum indicum and Rhemaniae Radix should be followed.

• KSBB Journal
• /
• 제28권2호
• /
• pp.106-114
• /
• 2013

Ponciri fructus, the unripe fruits of Poncirus trifoliata, are widely used in oriental traditional medicine as a remedy for inflammation, gastritis, emesis, digestive ulcers, allergy, and dysentery. To study the anti-wrinkle effects of Ponciri fructus extract (PFE) containing flavanone glycosides, PFE was fermented with Ganoderma lucidum mycelia and its biological activities were investigated. In Ponciri fructus extracts fermented with G. lucidum (G-PFE), polyphenol content was $1,021.00{\pm}0.50{\mu}g/mL$ and flavonoid content was $589.41{\pm}0.21{\mu}g/mL$. G-PFE was found to scavenge 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals and superoxide anion radical by a dose dependent manner, respectively. G-PFE showed higher antioxidant activity than that of PFE. In addition, the photoprotective properties of G-PFE was tested in human dermal fibroblasts (HDF) exposed to UVA radiation. G-PFE inhibited the activity of matrix metalloproteinase-1 (MMP-1) and showed a dose dependent decrease in the expression level of MMP-1. G-PFE also increased collagen biosynthesis in HDF. These results demonstrate that G-PFE could be useful as a potential cosmetic ingredient for anti-wrinkle.

• Molecules and Cells
• /
• 제26권6호
• /
• pp.625-630
• /
• 2008

This study was undertaken with the aim of developing an easy and quick means of analyzing the effect of various compounds on the synthesis and secretion of human type I collagen at the protein level. A modification of the ELISA method was used on HFF-1 cells. For the proof of concept, we used thirteen compounds most of which are known to be antioxidants. Each compound was tested at concentrations of 0, 10 and $100{\mu}m$ on HFF-1 cells for 24 h. Thirteen sets of experiments for each compound were performed in ANOVA with three replicates. Duncan multiple range test (DMRT) was used to compare the mean values obtained from the treatment groups. From the results it was concluded that Vitamin C, undecylenic acid, conjugated linoleic acid, glycolic acid, and citric acid at $100{\mu}m$ concentration could be used for anti-wrinkling or protection from premature aging, which requires enhancement of collagen synthesis. Lactic acid, EGCG, resveratrol, and retinol that can inhibit collagen synthesis effectively in a dose-dependent manner may be used for anti-fibrosis treatment purposes.

• Asian-Australasian Journal of Animal Sciences
• /
• 제20권11호
• /
• pp.1655-1661
• /
• 2007

Prolyl 4-hydroxylase (P4H) plays a central role in collagen synthesis by catalyzing the hydroxylation of the proline residue in the X-Pro-Gly amino acid sequence, and controls the biosynthesis of collagen that influences overall meat quality. In order to verify expression level of the catalytic ${\alpha}$ subunit of P4H, a 2.7 kb clone of the ${\alpha}$ subunit gene for P4H was selected from a cDNA library prepared from the muscular tissue of Sancheong berkshire pigs, and the whole gene sequence was determined. As expression level of the ${\alpha}$ subunit of P4H differed between tissues of pigs, we intended to assess more precisely the level of ${\alpha}$-subunit expression between tissues of Sancheong Berkshire pigs by using RT-PCR. Muscular and adipose tissues were taken from each pig grouped by growth stage (weighing 60, 80, and 110 kg) of Yorkshire and Sancheong Berkshire pigs, and the expression levels of the ${\alpha}$-subunit of P4H were examined. Since there were significant differences in the expression level with respect to variation in growth stage (p<0.01), an attempt was made to identify any influences of pig species and tissue variation. The muscular and adipose tissues of pigs weighing 110 kg showed higher expression levels than pigs weighing 60 kg and 80 kg. In general, significantly higher expression levels were found in muscular than in adipose tissue. The expression levels in Sancheong Berkshire were significantly higher than in Yorkshire pigs (p<0.01 or p<0.05). Since expression level of the ${\alpha}$-subunit of P4H affects the activity of P4H and is connected to the biosynthesis of collagen and increased collagen can improve meat texture, this finding may explain why meat quality of the Sancheong Berkshire pig is acclaimed in Korea. Given the higher expression levels of the ${\alpha}$-subunit gene in adipose than in muscular tissue, and also in the heavier pigs, more intensive studies are required to assess the correlation between expression level of the ${\alpha}$ subunit gene and overall meat quality.

• 한국식품영양과학회지
• /
• 제35권1호
• /
• pp.42-47
• /
• 2006

본 연구에서는 비타민 C의 배양세포 증식을 촉진하는 기능을 세포 간 결합조직의 주성분인 콜라겐 생합성에 초점을 맞추어 3T6 세포주 및 흰쥐에서 분리한 초대 연골세포를 이용하여, 세포 및 세포 외액 중의 콜라겐 함량의 분석과 콜라겐 생합성에 미치는 비타민 C의 영향을 각 농도별로 분석하여 콜라겐 생합성에 필요한 비타민 C의 적합한 첨가 농도를 검토하였다. 비타민 C를 1.0 mM 농도가 되도록 첨가하여 3T6 섬유아세포 및 초대연골 세포를 배양하였을때 양 세포 모두 콜라겐 양은 비타민 C를 첨가한 세포가 높은 수치를 나타내어 비타민 C에 의한 콜라겐 합성의 촉진효과가 현저하였으며 일수의 증가에 따라 그 합성량도 증가하였다. 비타민 C 무첨가의 경우 세포층의 콜라겐 합성량을 3T6 섬유아세포와 연골세포를 비교하였을 때 3T6 섬유아세포의 경우 배양일수의 경과와 더불어 콜라겐 양이 증가하였으나 연골세포의 경우 1일째부터 21일째까지 콜라겐양은 거의 변화하지 않아, 본 실험에 사용한 연골세포는 초대 배양세포로서 세포외로부터 비타민 C의 공급이 되지 않을 경우콜라겐 합성은 일어나지 않는 것으로 사료된다. 따라서 배양세포의 콜라겐 합성에 미치는 비타민 C의 영향을 검토하기 위하여 초대연골세포를 이용하여 비타민 C의 농도를 변화시켜 가면서 콜라겐 합성량을 측정하였다. 5 mM, 7 mM, 10 mM의 고농도의 비타민 C를 첨가한 경우 저 농도의 비타민 C 첨가 경우보다 plate 내의 총 콜라겐 함량은 적었다. 그러나 DNA 양에 대한콜라겐 함량을 비교하였을 때 5mM 이상의 비타민 C 첨가에서는 콜라겐 합성 증가량이 조금 낮은 경향을 보였으나, $0.1\~2mM$을 첨가하였을 때의 콜라겐 양과 최종적으로는 거의 비슷한 수치를 나타내었다. 0.5 mM 이상의 비타민 C 첨가는 콜라겐 합성을 저해한다는 기존의 보고와는 달리 본 연구에서는 세포독성을 억제할 목적으로 배지 중에 catalase 첨가하였으며, 그 결과 $0.1\~10mM$의 비타민 C 농도범위에서는 콜라겐 합성량에 차이가 크게 없는 것으로 나타나, $0.1\~10mM$의 비타민 C 농도로는 catalase를 첨가한 배지를 사용할 경우 세포내의 콜라겐 양에 대한 비타민 C 첨가농도별 차이는 크게 없는 것으로 추측된다.