• 대한한방내과학회지
• /
• 제19권1호
• /
• pp.477-487
• /
• 1998

To clarify the activating effects of Scolopendrae corpus on immunological function, its effect on primary and secondary antibodies production in mice of various ages was investigated. Scolopendrae corpus increased the number of both antibody producing cells(anti-IgM and anti-IgG producing plaque forming cells, PFC) and phagocytic activity of peritoneal macrophage. Futhermore, these phenomena were significantly increased with aging in mice. Scolopendrae corpus also increased natural killer cell activity concerning to cancer immunology. These results suggest that Scolopendrae corpus markedly increases the reduced activity in the elderly and activates the immune response in senescence mice.

• 원예과학기술지
• /
• 제30권2호
• /
• pp.158-161
• /
• 2012

The influence of lysophosphatidylethanolamine (LPE) on anti-senescence of melon leaves and the change in fruit quality during the storage at low temperature were studied. In most of the crops, freshness of leaves is important factor for characteristics of fruits, such as sugar contents, color, and firmness. Melon ($Cucumis$ $melo$ L. cv. Prince) plants were sprayed with LPE at 5 and 3 weeks before commercial harvest. In upper part, LPE treatment showed slight high number of fresh leaf compared to no treatment (None). However, in lower part, LPE resulted in apparent inhibition effect on senescence, showing that lower side of melon plant kept fresh upon LPE application up to about 30%. The SSC of melon treated with LPE was similar to that of fruit from None at harvest. There was no change in soluble solids content (SSC) for all treatment during the storage at $7^{\circ}C$. There were no significant differences in firmness of mesocarp from melons given different treatments at harvest. The firmness of mesocarp from melon treated with LPE was higher than none after 2 weeks storage. The electrolyte leakage means for melon treated with LPE did not differ significantly from the means at initial storage after 2 weeks storage among the treatments. None increased 57% from its initial electrolyte leakage during storage. These results suggest that the application of LPE may have potential to inhibit senescence of leaves and maintain fruit quality during the storage in melon.

• 한국축산식품학회지
• /
• 제37권6호
• /
• pp.917-925
• /
• 2017

Whey protein, a by-product of milk curdling, exhibits diverse biological activities and is used as a dietary supplement. However, its effects on stress-induced vascular aging have not yet been elucidated. In this study, we found that whey protein significantly inhibited the Ang II-primed premature senescence of vascular smooth muscle cells (VSMCs). In addition, we observed a marked dose- and time-dependent increase in SIRT1 promoter activity and mRNA in VSMCs exposed to whey protein, accompanied by elevated SIRT1 protein expression. Ang II-mediated repression of SIRT1 level was dose-dependently reversed in VSMCs treated with whey protein, suggesting that SIRT1 is involved in preventing senescence in response to this treatment. Furthermore, resveratrol, a well-defined activator of SIRT1, potentiated the effects of whey protein on Ang II-primed premature senescence, whereas sirtinol, an inhibitor of SIRT1, exerted the opposite. Taken together, these results indicated that whey protein-mediated upregulation of SIRT1 exerts an anti-senescence effect, and can thus ameliorate Ang II-induced vascular aging as a dietary supplement.

• Journal of Microbiology and Biotechnology
• /
• 제26권7호
• /
• pp.1224-1233
• /
• 2016

The present study assessed the effects of an aqueous extract of Acanthopanax koreanum root (AE) and of AE following fermentation by lactic acid bacteria (Lactobacillus plantarum and Bifidobacterium bifidum) (AEF) on human skin fibroblast HS68 cells exposed to ultraviolet B (UVB) irradiation and oxidative stress. AEF effectively antagonized the senescence-associated β-galactosidase staining and upregulation of p53 and p21^Cip1/WAF1 induced by UVB or H₂O₂ treatment in HS68 cells. It also exhibited excellent antioxidant activities in radical scavenging assays and reduced the intracellular level of reactive oxygen species induced by UVB or H₂O₂ treatment. The antioxidant and antisenescent activities of AEF were greater than those of nonfermented A. koreanum extract. AEF significantly repressed the UVB- or H₂O₂-induced activities of matrix metalloproteinase (MMP)-1 and -3, overexpression of MMP-1, and nuclear factor κB (NF-κB) activation. This repression of NF-κB activation and MMP-1 overexpression was attenuated by a mitogen-activated protein kinase activator, suggesting that this AEF activity was dependent on this signaling pathway. Taken together, these data indicated that AEF-mediated antioxidant and anti-photoaging activities may produce anti-wrinkle effects on human skin.

• Journal of Microbiology and Biotechnology
• /
• 제27권2호
• /
• pp.365-371
• /
• 2017

Hydrogen has potential for preventive and therapeutic applications as an antioxidant. However, micro- and macroparticles of hydrogen in water disappear easily over time. In order to eliminate reactive oxygen species (ROS) related with the aging process, we used functional water containing nanoparticle hydrogen. Nanoparticle hydrogen does not disappear easily and collapse under water after long periods of time. We used murine embryonic fibroblasts that were isolated from 12.5-day embryos of C57BL/6 mice. We investigated the ability of nanoparticle hydrogen in water to suppress hydroxyurea-induced ROS production, cytotoxicity, and the accumulation of ${\beta}-galactosidase$ (an indicator of aging), and promote cell proliferation. The accumulation of ${\beta}-galactosidase$ in the cytoplasm and the appearance of abnormal nuclei were inhibited by daily treatment of cells with hydrogen water. When the aging process was accelerated by hydroxyurea-induced oxidative stress, the effect of hydrogen water was even more remarkable. Thus, this study showed the antioxidant and anti-senescence effects of hydrogen water. Nanoparticle hydrogen water is potentially a potent anti-aging agent.

• International Journal of Industrial Entomology and Biomaterials
• /
• 제12권1호
• /
• pp.1-5
• /
• 2006

Cordyceps, one of the well-known traditional Chinese medicines, consists of the dried fungus C. sinensis growing on the larva of caterpillar. It is commonly used as a tonic of restoring vital body functions. In order to evaluate the pharmacological effects of C. militaris, the anti-oxidation and antiaging effect of cultured C. militaris growing on pupa of silkworm Bombyx mori, were investigated. The results showed! that the contents of lipofusin in myocardium were reduced and the SOD activity in the liver were elevated in a dose-dependent manner while no effect was observed for blood GSH-Px activity and liver MDA content in mice perfused with the cultured C. militaris compared to those untreated mice. Furthermore, the average life span, maximum life span and 50% death time of the fruit flies treated with cultured C. militaris were markedly prolonged. The results suggest that the cultured C. militaris growing on pupa of silkworm possesses anti-oxidation and delay senescence activity.

• 대한화장품학회지
• /
• 제44권2호
• /
• pp.117-124
• /
• 2018

본 연구에서는 천연물 화장품 원료의 유기용매 추출법과 미생물을 이용한 발효법의 장단점을 보완하기 위해, 생(生) 천연물에 미생물을 이용한 발효를 통해 과즙을 만드는 새로운 제조법으로 화장품 소재를 개발하였다. 천연물은 다양한 색상과 비타민이 풍부한 것으로 알려진 파프리카 중 두 가지 색상(빨간색, 녹색)을 선정하였고, 발효에 사용된 미생물로서 당분해 효소능이 있는 유산균(Lactobacillus plantarum)을 이용해 파프리카에 접종하여 발효하였다. 먼저 고압으로 착즙한 파프리카 생즙 2종과 유산균으로 발효한 발효즙 2종의 생리활성변화를 확인해 보았다. 총 페놀함량과 총 플라보노이드 함량 측정 실험 결과, 파프리카 생즙보다 발효즙에서 모두 함량이 높았으며 특히 빨간색 파프리카 발효즙에서 가장 높은 함량을 나타내었다. 프리라디칼 소거효과와 지질과산화 억제효과 역시 파프리카 생즙에 비해 발효즙에서 우수한 항산화 효과가 나타났으며, 그중 빨간색 파프리카 발효즙의 효과가 가장 높았다. 항산화 효과가 높은 빨간색 파프리카 발효즙을 이용해 MMP-1 발현실험을 한 결과 농도 의존적으로 MMP-1 mRNA와 MMP-1 단백질의 발현을 억제하였다. 노화에 따른 glycation(당화현상) 실험의 경우, 파프리카 발효즙에서 상대적으로 anti-glycation 효과로 최종 당화산물(advanced glycation end-products, AGEs) 생성 억제 활성이 높아 항산화효과와 밀접한 연관성을 나타내었다. 또한, 세포노화 지표물질인 senescence-associated ${\beta}$-galactosidase (SA-${\beta}$-gal) 활성을 사람 섬유아세포(HDF)를 이용하여 실험한 결과, 파프리카 발효즙을 처리하였을 때 노화에 의해 염색된 세포의 수가 감소하여 세포의 senescence를 억제하는 것을 확인할 수 있었다. 결론적으로, 파프리카는 생즙보다 유산균을 이용한 발효즙이 항산화 효과와 항노화 효능이 우수했으며, 그중 빨간색 파프리카 발효즙이 가장 우수한 항산화와 항노화 효능을 가져 이를 이용한 항산화 및 항노화의 천연 신소재로 적용될 수 있을 것으로 사료된다.

• BMB Reports
• /
• 제52권8호
• /
• pp.520-525
• /
• 2019

Dihydroartemisinin (DHA) has been reported to possess anti-cancer activity against many cancers. However, the pharmacologic effect of DHA on HBV-positive hepatocellular carcinoma (HCC) remains unknown. Thus, the objective of the present study was to determine whether DHA could inhibit the proliferation of HepG2.2.15 cells and uncover the underlying mechanisms involved in the effect of DHA on HepG2.2.15 cells. We found that DHA effectively inhibited HepG2.2.15 HCC cell proliferation both in vivo and in vitro. DHA also reduced the migration and tumorigenicity capacity of HepG2.2.15 cells. Regarding the underlying mechanisms, results showed that DHA induced cellular senescence by up-regulating expression levels of proteins such as p-ATM, p-ATR, ${\gamma}-H_2AX$, P53, and P21 involved in DNA damage response. DHA also induced autophagy (green LC3 puncta gathered together and LC3II/LC3I ratio increased through AKT-mTOR pathway suppression). Results also revealed that DHA-induced autophagy was not linked to senescence or cell death. TPP1 (telomere shelterin) overexpression could not rescue DHA-induced anticancer activity (cell proliferation). Moreover, DHA down-regulated TPP1 expression. Gene knockdown of TPP1 caused similar phenotypes and mechanisms as DHA induced phenotypes and mechanisms in HepG2.2.15 cells. These results demonstrate that DHA might inhibit HepG2.2.15 cells proliferation through inducing cellular senescence and autophagy.

• 한국작물학회:학술대회논문집
• /
• 한국작물학회 2006년도 한국약용작물학회 공동춘계학술발표회
• /
• pp.102-103
• /
• 2006

• BMB Reports
• /
• 제53권2호
• /
• pp.65-73
• /
• 2020

Life expectancy has dramatically increased around the world over the last few decades, and staying healthier longer, without chronic disease, has become an important issue. Although understanding aging is a grand challenge, our understanding of the mechanisms underlying the degeneration of cell and tissue functions with age and its contribution to chronic disease has greatly advanced during the past decade. As our immune system alters with aging, abnormal activation of immune cells leads to imbalance of innate and adaptive immunity and develops a persistent and mild systemic inflammation, inflammaging. With their unique therapeutic properties, such as immunomodulation and tissue regeneration, mesenchymal stem cells (MSCs) have been considered to be a promising source for treating autoimmune disease or as anti-aging therapy. Although direct evidence of the role of MSCs in inflammaging has not been thoroughly studied, features reported in senescent MSCs or the aging process of MSCs are associated with inflammaging; MSC niche-driven skewing of hematopoiesis toward the myeloid lineage or oncogenesis, production of pro-inflammatory cytokines, and weakening their modulative property on macrophage polarization, which plays a central role on inflammaging development. This review explores the role of senescent MSCs as an important regulator for onset and progression of inflammaging and as an effective target for anti-aging strategies.