• Title/Summary/Keyword: stimulatory effect

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Growth Stimulation of Lactic Acid Bacteria by a Radish Component (무의 젖산균 증식촉진물질과 촉진작용)

  • Park, Kyung-Suk;Kyung, Kyu-Hang
    • Korean Journal of Food Science and Technology
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    • v.24 no.6
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    • pp.528-534
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    • 1992
  • Growth stimulatory material for lactic acid bacteria was extracted from radish and radish green juice and its growth stimulatory effect was tested. Dried methanol-precipitated growth stimulatory material was lightly grayish white powder, Its ash content is 44% and approximately 50% of the ash is sulfur. It has reddish brown color upon solubilization in water. The material had unchanged stimulatory effect when it was treated with proteinase or pectinase, or ashed. The growth stimulatory activity was dialyzable. The material was able to counteract the growth inhibitory effect of EDTA. When selected lactic acid bacteria were grown at $30^{\circ}C$ for 24 hours in peptone(0.5%)-yeast extract(0.5%)-glucose(2%) broth with and without 0.5% growth stimulatory material, the material stimulated the growth of Lactobacillus plantarum, L. fermentum, L. leichmanii, L. sake, L. brevis, L. acidophilus, L. casei, Pediococcus pentosaceus, Leuconostoc mesenteroides, Streptococcus faecalis, S. lactis, S. cremoris and S. thermophilus by 19, 1833, 133, 444, 840, 32, 14, 18, 6, 17, 4, 5 and 4 times, respectively.

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미생물 생육에 대한 무 추출물의 억제 및 촉진 효과

  • 곽희진;계수경
    • Journal of Applied Tourism Food and Beverage Management and Research
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    • v.11
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    • pp.29-42
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    • 2000
  • Extracts active on the growth of food-born microorganisms were prepared from radish by using acetone, methanol and water as the solvents. Strains of bacteria and yeast, such as L. brevis, L. fermentum, L. faecalis, L. mesenteroides, B. subtilis, S. flexneri, S. aureus and C. albicans. Addition of 1 $m\ell$ of acetone extract exhibited the strongest growth effect on L. brevis. The water extracts turned out to stimulate growth of all Lactic acid bacteria. Especially, it was observed that the same material produced the highest stimulatory effect(by about 40-50 times) on L. faecalis and L. fermentum and L. mesenteroides. Also, it was proved to have a weak stimulate effect on C. albicans, S. flexneri and S. aureus. But, on the contrary to this, when applied to B. subtilis it showed growth stimulation by about 10 times.

Effect of Platelet-Activating Factor (PAF) on Murine Ovulation, Early Embryo Development and Implantation (Platelet-Activating Factor (PAF)가 생쥐의 배란, 초기배아의 발달 및 착상에 미치는 영향)

  • Kang, Kil-Chun;Lee, Young-Il
    • Clinical and Experimental Reproductive Medicine
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    • v.18 no.2
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    • pp.143-151
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    • 1991
  • An embryo-derived platelet activating factor (PAF) has been demonstrated to play an important role in reproduction. This report examined the effect of PAF on ovulation, fertilization, embryo development, implantation and fetal viability by using murine model. PAF had no stimulatory effect on ovulation and fertilization. But PAF had stimulatory effect on embryo development in in-vitro test, in spite of no effect on implantation and fetal viability. These results demonstrate that exogenous PAF could enhance embryo development and implantation and give suggestion that PAF may play an role in human IVF program.

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The hypoxia regulation on CYP4501Al expression

  • Kim, Ji E.;Yhun Y. Sheen
    • Proceedings of the Korean Society of Applied Pharmacology
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    • 1998.11a
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    • pp.140-140
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    • 1998
  • The aim of this study was to find out the effect of hypoxic condition on the regulation of cyplal gene expression. pcyplal-Luc construct was cloned and transfected into Hepa I cells. When Hepa-I cells containing pcyplal-Luc were treated by DFO (desferrioxamine) which is iron-chelating agent, the stimulatory effect of luciferase by TCDD was decreased. This inhibitory effect of desferrioxamine on the luciferase activity was dose dependent and abolished by concomitant treatment with N$\^$G/-nitro-ι-arginine. And when cobalt chloride which is known as a hypoxia inducing chemical was administrated, the stimulatory effect of luciferase by TCDD was also decreased. This inhibitory effect of cobalt chloride on the luciferase activity was dose dependent and abolished by concomitant treatment with N$\^$G/-nitro-ι-arginine. These data showed that hypoxic condition down regulates cyplal gene expression and this might be through nitric oxide action.

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Immuno stimulatory activities of Samul-tang, Sagunja-tang, Pamul-tang and Sipjeondaebo-tang in vitro (사물탕, 사군자탕, 팔물탕, 십전대보탕의 약리 활성 비교 연구)

  • Lee, Ho-Young;Ha, Hye-Kyung;Jung, Da-Young;Lee, Nam-Hun;Shin, Hyeun-Kyoo
    • Journal of Oriental Neuropsychiatry
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    • v.21 no.4
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    • pp.41-51
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    • 2010
  • Objectives : Samul-tang(SM). Sagunja-tang(SG). Pamul-tang(PM) and Sipjeondaebo-tang(SJ) was used many diseases such as sterility. menstrual disorder. general prostration. recruitment in Korea. We investigated the immune stimulatory activities of SG. SM. PM and SJ in in vitro. Methods: For comparision for effective of SM. SG. PM and SJ. this study examined anti-inflammation(NO. PGE2 assay). anti-oxidation(DPPH assay) and immune response in in vitro assay. For immune response activities. this study used NO synthesis on RAW 264.7 cells, splenocyte proliferation and cytokine assay(IL-2, IL-4) in splenocyte. Results: The results showed that SG. SM. PM and SJ were no significant effect anti-oxidation and anti-inflammatory effects. For immune response. they showed the splenocyte proliferation and macrophage proliferation. We confirmed that they synthesised NO a dose-dependent manner significantly and secreted the IL-4. Conclusions : These results suggested the SG, SM, PM and SJ had immune stimulatory activity. A efficacy of immune response in them had produced similar results.

The effect of vibratory stimulus on pain perception during intraoral local anesthesia administration in children: a systematic review and meta-analysis

  • Tirupathi, Sunny Priyatham;Rajasekhar, Srinitya
    • Journal of Dental Anesthesia and Pain Medicine
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    • v.20 no.6
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    • pp.357-365
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    • 2020
  • Background: To evaluate the effectiveness of vibration as a counter-stimulatory measure in reducing subjective pain due to local anesthesia administration in children. Methods: Electronic databases (PubMed, Ovid SP, Cochrane Central Register of Controlled Trials) were searched until April 2020. Studies were screened by titles and abstracts, followed by full text evaluation of the included studies. Results: A total of seven studies involving 376 children aged 5-17 years were included in the systematic review and meta-analysis. The meta-analysis compared vibration as a counter-stimulatory measure with no vibration as a comparator. The primary outcome evaluated was pain perception or subjective pain reported by the child. The secondary outcome evaluated was objective pain evaluated in each study. The pooled mean difference favored vibration to be effective for the first outcome. Conclusion: Within the limits of this systematic review, low quality evidence suggests that vibration as a counter-stimulatory measure is effective in reducing the subjective pain reported by children during local anesthesia administration.

Effects of Flowering and Fruiting Stimulatory Treatments on Twig Growth of Tilia amurensis R$_{UBP}$. (개화결실촉진처리가 달피나무의 소지생장에 미치는 효과에 관한 결과)

  • 이덕수;홍성각
    • Journal of Korea Foresty Energy
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    • v.19 no.1
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    • pp.13-19
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    • 2000
  • This study was aimed to investigate the effect of several stimulatory trements of flower and seed growth on the reproductive and vegetative growth of Tilia amurensis RUBP. The effects of mounded planting, girdling, root-pruning, bending and foliar fertilizer application on the fifteen to forty yead-old tress growing in the experimental plantation at the Konkuk University and the National forest at the Daegwanryung were measured. The following results were obtained: (1) The number and the longitydinal growth of internode were reduced by the treatments. The xylem growth of the longitudited more greatly than the bark growth by all the treatments. (2)The increasong rate of the brand angle as compared to that of the control was 2.11% in the girdling treatment, 31.61% in the mounded planting treatment, and 22.14% in root-pruning treatment. (3) The foliar application of fertilizer(N, P, K, and B) before flowering increased leaf and stem growth, that one after pollen fertilization increased the fruit growth. (4)The foliar application of fertilizer before flowering increased the xylem growth while that after pollen fertilization increased the bark growth. (5)The stimulatory effects of root pruning and branch bending on the flowering and seed growth were shown relatively less than that of mounded planting. The effect of the moinded planting on the yield of the seeds has remained continuously every year since planting the trees.

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Effect of Glycerophospholipid on Oleate-Dependent Phospholipase D in Mammalian Source

  • 김명주;김봉섭;이상윤;손정원;김철용;최명선;최명운
    • Bulletin of the Korean Chemical Society
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    • v.18 no.11
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    • pp.1204-1207
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    • 1997
  • Effects of exogenous glycerophospholipids on oleate-dependent phospholipase D (PLD) activity were studied in lymphocytic mouse leukemia L1210 cells and in solubilized microsomal phospholipase D of rat brain. Among the phospholipids tested phosphatidic acid had the most stimulatory effects on both PLD activities up to about 3 folds. Lysophosphatidic acid also showed promoting effect on microsomal PLD activity but much less on L1210 cells compared to that of phosphatidic acid. While phosphatidylethanolamine increased PLD activity slightly, phosphatidylinositides were nearly ineffective in the tested sources. The stimulatory effect of phosphatidic acid observed can be utilized to improve the in vitro assay system for oleate-dependent PLD in mammalian sources.

Effect of nitric oxide on the cyplal gene expression

  • Kim, Ji E.;Jung Y. Bae;Yhun Y. Sheen
    • Proceedings of the Korean Society of Applied Pharmacology
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    • 1998.11a
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    • pp.141-141
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    • 1998
  • In order to study the effect of nitric oxide on the regulation of mouse cyplal expression, 5' flanking DNA of mouse cytochrome P450 lal was cloned into pGL3 basic vector encoding luciferase gene. pcyplal-Luc was transfected into Hepa I cells and various chemicals were treated. Luciferase activity was stimulated 1000 folds over that of control by TCDD (2,3,7,8-tetrachloro-p-dioxin) treatment and this stimulation was dose dependent. When SNP (sodium nitroprusside) which donates nitric oxide was administrated, this stimulatory effect of TCDD on luciferase activity was decreased. And LPS (lipopolysaccharide) which is an iNOS (inducible nitric oxide synthase) inducer also decreased the stimulatory effect of TCDD on luciferase. And iNOS inhibitor N$\^$G/-nitro-ι-arginine + TCDD treatment increased the stimulation effect of TCDD and this effect was abolished when ι-arginine was added to N$\^$G/-nitro-ι-arginine + TCDD treatment. When N$\^$G/-nitro-ι-arginine was concomitantly administrated with SNP or LPS to confirm the effect of nitric oxide, the inhibitory effect of SNP or LPS was abolished. These data strongly suggest that nitric oxide might be an inhibitory regulator on the cytochrome P450 lal gene expression in Hepa cells.

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Stimulatory Effect of Oxygen on the Browning of a Soy Sauce Model System (간장 Model System에서 산소의 갈변촉진효과)

  • Park, Seung-Kyu;Kyung, Kyu-Hang
    • Korean Journal of Food Science and Technology
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    • v.23 no.4
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    • pp.523-525
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    • 1991
  • The stimulatory effect of oxygen on the browning of a soy sauce model system (glucose-glycine in 18% NaCl solution) with or without added organic acids were investigated. The group incubated aerobically browned at a significantly higher degree than the group incubated anaerobically. Organic acids also positively affected the browning of the soy sauce model system.

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