• The Journal of Korean Obstetrics and Gynecology
• /
• v.22 no.3
• /
• pp.36-50
• /
• 2009

Purpose: This study was to determine the protective effects of Dioscoreae Rhizoma on the Mouse Embrio Fibroblast (MEF) cells exposed to the ultraviolet rays(UVA). Methods: The samples were assigned randomly to five groups; control group without any treatments, UVA group exposed only to UVA, DR group exposed only to the Dioscoreae Rhizoma, UVA-DR group exposed to UVA before being treated with the Dioscoreae Rhizoma, and DR-UVA group treated with the Dioscoreae Rhizoma before being exposed to UVA. The survival rate of cells, metabolic rate of cells, transformation of nucleus within cells, alteration of cell cycle, effects on the apoptosis, the change of the amount of protein related to cell cycle were measured in order to determine the cell protective effects of the Dioscoreae Rhizoma on each group. Results: 1. DR-UVA group has more cell protective effects compared to the UVA group in all experiments, indicating that the Dioscoreae Rhizoma protects skin from UVA physically and chemically. 2. UVA-DR group shows more efficiency compared to UVA group in rapid recovery of damaged cell and leading highly damaged cells to apoptosis, preventing the expression of abnormal cells. Conclusions: Dioscoreae Rhizoma has effects of protecting MEF cells from UVA, of recovering cells damaged by UVA, and of prohibiting the expression of abnormal cells.

• The Korea Journal of Herbology
• /
• v.30 no.4
• /
• pp.95-100
• /
• 2015

Objectives : The purpose of this study was to research the whitening effects and developing by cosmetics of the extract fromDioscoreae Rhizoma, which is one of the most popular health-promoting herb in herbal medications.Methods : We performed tyrosinase inhibition assay, reverse transcription-polymerase chain reaction (RT-PCR) and western blot for whitening effects. Also we measured MTT assay for cell viability.Results : The results were obtained as follows : For whitening effect, tyrosinase inhibition rate of extract fromDioscoreae Rhizomashowed more than 42.28% at 1,000 ㎍/㎖ concentration. Cell toxicity effect on melanoma cells (B16F10) of extract fromDioscoreae Rhizomashowed 81.97% with toxicity at 50 ㎍/㎖ concentration. So we were measured at a concentrations of 5, 10 and 50 ㎍/㎖ in all experiments involving cell. In addition, whitening related mRNAs including microphthalmia associated transcription factor (MITF), tyrosinase related protein-1 (TRP-1), tyrosinase related protein-2 (TRP-2), tyrosinase were reduced byDioscoreae Rhizoma. We also foundDioscoreae Rhizomatransiently decreased protein kinase A (PKA) which is known to be upstream to the down regulation of MITF and tyrosinase. But phosphorylation of extracellular signal related kinase (pERK) were increased byDioscoreae Rhizoma. These results imply thatDioscoreae Rhizomadecrease melanogenesis via ERK activation and subsequent down regulation of MITF and tyrosinase.Conclusions : Therefore, all these findings suggested the potent usage ofDioscoreae Rhizomaas materials of functional cosmetics by confirming whitening activity related with melanin content.

• The Korea Journal of Herbology
• /
• v.25 no.3
• /
• pp.123-130
• /
• 2010

Objectives & Method：We investigated adverse symptoms, toxicity, treatment and prevention against adverse effects of restoratives for invigorating qi(補氣藥) in order to use herbal medicines accurately. Result：Ginseng Radix(人參), Codonopsis Pilosulae Radix(黨參), Panacis Quinquefolii Radix(西洋參), Astragali Radix(黃芪), Atractylodis Rhizoma Alba(白朮), Dioscoreae Rhizoma(山藥), Dolichoris Semen(白扁豆), Glycyrrhizae Radix(甘草), Jujubae Fructus(大棗) and Mel(蜂蜜) may give rise to some side effects, allergic reaction or toxic symptoms in restoratives for invigorating qi(補氣藥). The representative methods of poisoning treatment in western medicines are stopping medication, washing out the stomach, promotion of vomiting, causing diarrhea, supplies of grape sugar and symptomatic treatment, etc. The representative methods of poisoning treatment in oriental medicine take advantage of various herbs. And Oriental medical doctor should meet symptoms as patients call for attention. In order to prevent against poisoning of restoratives for invigorating qi(補氣藥), the patients should keep usage, dosage and notes. Conclusion：We should pay attention to clinical using of Ginseng Radix(人參), Codonopsis Pilosulae Radix(黨參), Panacis Quinquefolii Radix(西洋參), Astragali Radix(黃芪), Atractylodis Rhizoma Alba(白朮), Dioscoreae Rhizoma (山藥), Dolichoris Semen(白扁豆), Glycyrrhizae Radix(甘草), Jujubae Fructus(大棗) and Mel(蜂蜜) in restoratives for invigorating qi(補氣藥).

• Herbal Formula Science
• /
• v.14 no.1
• /
• pp.168-175
• /
• 2006

The purpose of this study was to investigate the effect of water extract of Dioscoreae Rhizome on the reproduction activity of Wistar male rat. The group treated with 1.0 g/kg/day oral administrations of water extract of Dioscoreae Rhizoma (SK0l6) during 8 weeks was compared with the normal group. Sperm count, sperm motility, body weight, and testis weight were investigated in two groups. Sperm count. body weight, and testis weight of two groups did not show the significant difference. But sperm motility of the treated group was reduced significantly (the normal group: 56.43 %, SK0l6 group: 53.47 %, p < 0.05). According to the results, SK0l6 have no effects on sperm count, body weight. and testis weight but reduced sperm motility significantly.

• Journal of Korean Medicine Rehabilitation
• /
• v.30 no.2
• /
• pp.37-46
• /
• 2020

Objectives In this study, we analyzed the effect of Dioscoreae Rhizoma on exercise practice ability and blood fatigue variable factor in the forced swimming test. Methods Male mice were divided into four group. Mice were administrated with saline, Discorae Rhizoma extracted by water (DRW), Discorae Rhizoma extracted by 30% ethanol (DRE), red ginseng (RG), orally once per day, for 1 week. Exercise performance was evaluated by exhaustive swimming time and weights. Glycogen contents of liver and soleus muscle were measured at the end of the experiment. In addition, the biochemical parameters such as asparate aminotransferase (AST), alanine aminotransferase (ALT), blood urea nitrogen, creatine, lactate dehydrogenase (LDH), ammonia, triglycerides (TG), total cholesterol (TC) and free fatty acid (FFA) were analyzed. Results Both DRW and DRE showed an improvement of swimming endurance compared with control group. Levels of ALT, ammonia, TG, TC and FFA were significantly decreased in both DRW and DRE compared with control group. Levels of AST, Creatine were significantly reduced in DRE group compared with control group. Moreover LDH showed only a tendency to increase in the DRW and DRE groups. Conclusions In summary, the present study showed that Dioscoreae Rhizoma improved in physical fatigue and exercise practice ability and DRE improved the superior than those of DRW.

• Korean Journal of Pharmacognosy
• /
• v.21 no.4
• /
• pp.274-283
• /
• 1990

This study was conducted to further characterize mucilages from Dioscoreae Rhizoma, which have been known to be proteoglycans. We chose the two types of yams, Dioscorea batatas Dec. (club-like) and D. japonica Thunb. (cane-like). Repeated gel filtration of a dialyzed water extract of each fresh yam on Bio-gel P-100 and then Sephadex G-150 columns completely separated the mucilage from protein. Furthermore, gel filtration of a water extract from each yam processed by steaming and drying on the Bio-gel P-100 column gave only one polysaccharide peak without protein. These results revealed that the mucilages of yams were only composed of polysaccharide. Then we assessed some properties of the mucilages under three kinds of criteria: a complex-forming capacity between mucilage and alcian blue, mannose content in the mucilage, and viscosity. The complex-forming capacities of two types of fresh yams were closely similar with each other, but the processing of two types of the fresh yams greatly lowered the complex-forming capacity and viscosity.

• Journal of Physiology & Pathology in Korean Medicine
• /
• v.23 no.3
• /
• pp.639-644
• /
• 2009

The aim of this study was carried out to investigate the protective effect of Rhizoma Dioscoreae on the gastric mucosal lesions induced by alcohol in rats. Experimental groups were treated by oral infusion with Rhizoma Dioscoreae extract at the dose of 0.03465 g/ml(OA-RD1 group), 0.0693 g/ml(OA-RD2 group), and 0.1386 g/ml(OA-RD3 group), while D.W group was administrated with the distilled water and control group did not pretreated. Experimental groups pretreated for 14 days, and given orally 1 ml of 75% alcohol two times(30min interval). The animals were killed 1hr 30min after alcohol treatment, and measured rats body weight, absolute stomach weight, relative stomach weight, SOD activity, glutathione peroxidase(GPx) activity, observed gastric mucosal lesions. The body weight was unremarkable changed. In once as dose intake group's absolute stomach weight was increased and In once as dose intake group, twice as dose intake group's relative stomach weight was increased. SOD activity, glutathione peroxidase activity in twice as dose intake group is remarkably increased. Light microscopy Observations of congestion, hemorrhage, and erosion in gastric mucosal lesions were shown severely in control group than OA-RD1, OA-RD2, OA-RD3. These results suggest that the proposed gastroprotective effect may involve activation of antioxidant effect. And Twice as dose is especially effective.

• Journal of Physiology & Pathology in Korean Medicine
• /
• v.18 no.4
• /
• pp.1140-1146
• /
• 2004

This study was carried out to investigate the comparison of immunomodualtory effects of water-extracted Ginseng Radix(GR), Pilose Asia-bell(PA), Astragali Radix(AR), Astractylodes Rhizoma alba(AA) and Dioscoreae Rhizoma (DR). The parameter examined to assess apparent immunomodulatory effect of the water-extracted GR, PA, AR, AA and DR included the regulation of Nitric oxide (NO), the expression of Th1/Th2 type cytokine, the change of B cell phenotype. The water-extracted GR, PA, AR, AA and DR inhibited NO production and iNOS protein expression in LPS stimulated RAW 264.7 macrophage cells. In the Th1 and Th2 cytokine expression, the water-extracted GR, PA, AR, AA and DR induced IL-2 and IFNr mRNA gene expression. Therefore, it seems that the water-extracted GR, PA, AR, AA and DR have a inducing effect of Th1 type cytokines. In the Flow cytometry analysis, the water-extracted GR, PA, AR, AA and DR did not change B cell phenotype (CD45R/B220). The water-extracted GR, PA, AR, AA and DR have a reducing effect of immune suppression cause by Methotrexate (MTX), an agent of immune suppression. These results suggest that the immunomodulatory effects of the water-extracted GR, PA, AR, AA and DR may be, in part, associated with the inducing IL-2 and IFNr mRNA gene expression in and regulation of NO production in macrophage cells.

• Journal of the Korean Society of Food Science and Nutrition
• /
• v.18 no.3
• /
• pp.321-327
• /
• 1989

The buffer activities of 72 species of natural pH adjusters in Chinese herb medicine materials of food materials by 100% acetic acid$({\mu}{\ell})$ titration until pH 4.0 in the $100m{\ell}$ of 1 % solution of the pH adjuster were evaluated for their abilities to retard acidification of Kimchi. There were 14 species above 100 of buffer activity such as Glycerehizae Radix(150), Siler divaricatum Benthan et Hooker etc. among selected Chinese herb medicine materials. In selected Chinese herb medicine materials, the buffer activities of Erillae Herba+Glycyrehizae Radix, Erillae Herba+Dioscoreae Rhizoma, Erillae Herba+Glycyrehizae Radix, Erillae Herba+Dioscoreae Rhizoma, Erillae Herba+Puerariae Radix, Chrysanthenum sinense+Puerariae Radix, Alismatis Rhizoma+Angelicae gigantis and Dioscoreae Rhizoma+Puerariae Radix were above 150 by same amount blending each other. Species and buffer activities of natural pH adjusters, which are higher buffer capabilities in mushroom, bean and vegetable classes were mungbean(207). soybean(160), pease(190), fungus(225), Garland chrysanthemum(200), amaranth(175), wild sesame leaf(200), parsley(202) and green pepper(257) etc. Species and buffer activities of higher buffer capabilities of natural pH adjusters of natural blending pH adjusters which is synergistic effect or natural blending pH adjusters which is synergistic effect mixing with radish juice were mung bean+peas(272), mung bean+soy bean(282), fungus+parsley(302), Garlan chrysanthenum+amaranth(300), Garland chrysanthenum+wild sesame leaf(277), amaranth+green pepper(300) and amaranthe+parsley(280) etc and those mixing with cabbage juice were peas+fungus(202), Garland chrysanthenum(207) and fungus+parsely (205) etc.

• The Korea Journal of Herbology
• /
• v.34 no.4
• /
• pp.27-35
• /
• 2019

Objectives : Osteoarthritis is characterized by degeneration of articular cartilage, which is characterized by chronic pain, stiffness and decrease range of motion. The present study was designed to compare the therapeutic effect of Dioscoreae Rhizoma water extract (DRW) and Dioscoreae Rhizoma 30% ethanol extract (DRE) on the monosodium iodoacetate (MIA)-induced osteoarthritis rats. Methods : Osteoarthritis was induced by injection of MIA ($50{\mu}{\ell}$ with $80mg/m{\ell}$) into the knee joint cavity of rats. After adaptation period for seven days, rats were divided by 5 groups (n=10/group): normal group, control group, positive control (indomethacin 5 mg/kg), DRW 200 mg/kg treated group, DRE 200 mg/kg treated group (n=10/group). The hind paw weight distribution was measured with the changes of reactive oxygen species (ROS), peroxynitrite ($ONOO^-$) in articulation tissue. Also, the cyclooxygenase-2 (COX-2), inducible nitric oxide synthase (iNOS), tumor necrosis factoralpha ($TNF{\alpha}$), interleukin-6 (IL-6), matrix metalloproteinase-1 (MMP-1), and tissue inhibitor of metalloproteinases-1 (TIMP-1) were investigated by western blot analysis. Results : The administration of DRW and DRE significantly decreased the hind paw weight distribution. The ROS and $ONOO^-$ levels of cartilaginous tissue were significantly decreased in DRW and DRE compared to control group. The results showed that DRE decreased inflammatory cytokines such as iNOS and $TNF{\alpha}$. Also DRE decreased MMP-1 and increased TIMP-1. Conclusions : Based on the above results, Dioscoreae Rhizoma extract seems to have the therapeutic effect on osteoarthritis via suppression of inflammation.