• Title/Summary/Keyword: bio-activities

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Analysis of Anti-Allergic Activities by Extracts from Persimmon Sap-Stained Rayon and Cotton Fabrics (감물염색 직물의 추출물에 의한 항알러지 활성의 분석)

  • Lee, Sang-Han
    • Journal of Life Science
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    • v.20 no.5
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    • pp.794-798
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    • 2010
  • Allergic dermatitis is one of the most prevalent diseases in young/juvenile children worldwide. In this research, extracts with persimmon sap-stained fabrics (rayon and cotton) exhibited an elevation in $CD4^+$ cell numbers. MMP-2 and MMP-9 expressions by Hematoxylin-Eosin staining and immunohistochemistry revealed that the expressions were decreased by addition of the extracts. The present results collectively suggest that the active ingredients of persimmon sap-stained fabrics play an important role in inhibition of DNFB-induced-atopic symptoms in vivo.

Antioxidant and Anticancer Effects of Agrimony (Agrimonia pilosa L.) and Chinese Lizardtail (Saururus chinensis Baill) (짚신나물, 삼백초의 항산화와 항암활성 효과)

  • Seo, Hun-Seok;Chung, Bong-Hwan;Cho, Yong-Gu
    • Korean Journal of Medicinal Crop Science
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    • v.16 no.3
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    • pp.139-143
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    • 2008
  • The antioxidant activities of Agrimony (Agrimonia pilosa L.) and Chinese lizardtail (Saururus chinensis Baill) according to extraction methods were measured. SOD-like activity showed greater antioxidant effects with ethanol solvent than those with water. Ethanol extracts of Agrimony leaves showed the highest SOD-like activity of 94.4%. SOD-like activity differed according to the extraction solvents. The contents of polyphenolic compounds were higher in water extracts than those in ethanol extracts. The contents were 161.4 mg for Agrimony roots, 100.2 mg for Agrimony leaves, and 79.1 mg for Agrimony stalks in order. EDA in Agrimony leaves that were highest among medicinal plants were 83.4% in the water extract and 81.7% in the ethanol extract. The anticancer effects of the extracts by water and ethanol from Agrimony and Chinese lizardtail were experimented. The growth of stomach cancer cells, SNU-719 was inhibited 94.5% by the hexane fractions of Agrimony and also the growth of liver cancer cells, Hep3B was inhibited 83.2% by the hexane fractions of Agrimony, while the growth of normal cell, DC2.4 was not affected.

Triple Labral Lesion of Shoulder - A Case Report - (견관절의 삼중 관절와 순 병변 - 증례 보고 -)

  • Choi, Nam-Yong;Song, Hyun-Seok;Yoon, Jae-Woong
    • Clinics in Shoulder and Elbow
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    • v.12 no.1
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    • pp.80-83
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    • 2009
  • Purpose: A triple labral lesion represents a combination of injuries of the anterior, posterior and superior glenoid labrum. The injury mechanism and symptoms is not completely understood. Materials and Methods: We encountered a triple labral injury in a 39-year-old male complaining pain and active abduction difficulty after a motor vehicle accident. Currently, he does not complain any instability symptoms. The labrum was repaired using bio-absorbable suture anchors and a suture hook. Results: Eighteen months following surgery, the active range of motion was restored and he had no difficulty in his daily activities.

Conjugated Linoleic Acid (CLA) Supplementation for 8 Weeks Reduces Body Weight in Healthy Overweight/Obese Korean Subjects

  • Park, Eun-Ju;Kim, Jung-Mi;Kim, Kee-Tae;Paik, Hyun-Dong
    • Food Science and Biotechnology
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    • v.17 no.6
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    • pp.1261-1264
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    • 2008
  • In the present study, a randomized, double-blind, placebo-controlled trial to determine the effect of conjugated linoleic acid (CLA) supplementation (50:50 ratio of cis-9, trans-11 and trans-10, cis-12 isomers) for 8 weeks on body composition and biochemical parameters in healthy overweight/obese (body mass index, BMI${\geq}23\;kg/m^2$) Korean subjects was performed, Thirty participants (3 males and 27 females) were randomized to receive placebo (2.4 g olive oil/day) or 2.4g/day CLA (mixture containing 36.9% of cis-9, trans-11 and 37.9% of trans-10, cis-12). Eight weeks of CLA supplementation significantly decreased body weight by -0.75kg, BMI by $-0.27\;kg/m^2$, and hip circumference by -1.11 cm. The reduction of body weight was ascribed to the reduction of body fat mass (-0.59 kg) and lean body mass (-0.18 kg), although these changes were not significant. No significant differences in serum lipid profiles, liver function enzyme activities, and protein concentration were observed in either the CLA or placebo groups. These results indicate that short tenn supplementation (8 weeks) with CLA (2.4 g/day) may decrease body weight in Korean overweight/obese subjects.

Microbial population dynamics in constructed wetlands: Review of recent advancements for wastewater treatment

  • Rajan, Rajitha J.;Sudarsan, J.S.;Nithiyanantham, S.
    • Environmental Engineering Research
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    • v.24 no.2
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    • pp.181-190
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    • 2019
  • Constructed wetlands are improvised man-made systems, designed for adopting the principle of natural wetlands for purifying wastewater - the elixir of life. They are used widely as a cost-effective and energy-efficient solution for treating greywater generated from different tertiary treatment sources. It provides an elaborate platform for research activities in an attempt to recycle earth's natural resources. Among the several organic impurities removal mechanisms existing in constructed wetland systems, the earth's active microbial population plays a vital role. This review deals with the recent advancements in constructed wetland systems from a microbiological perspective to (effect/ devise/ formulate) chemical and physical treatment for water impurities. It focuses on microbial diversity studies in constructed wetlands, influence of wetland media on microbial diversity and wetland performance, role of specific microbes in water reuse, removal of trace elements, some heavy metals and antibiotics in constructed wetlands. The impurities removal processes in constructed wetlands is achieved by combined interactive systems such as selected plant species, nature of substrate used for microbial diversity and several biogeochemical effected reaction cycles in wetland systems. Therefore, the correlation studies that have been conducted by earlier researchers in microbial diversity in wetlands are addressed herewith.

Production of Indole-3-acetate in Corynebacterium glutamicum by Heterologous Expression of the Indole-3-pyruvate Pathway Genes

  • Kim, Yu-mi;Kwak, Mi-hyang;Kim, Hee-sook;Lee, Jin-ho
    • Microbiology and Biotechnology Letters
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    • v.47 no.2
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    • pp.242-249
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    • 2019
  • Biosynthesis of indole-3-acetate (IAA) from L-tryptophan via indole-3-pyruvate pathway requires three enzymes including aminotransferase, indole-3-pyruvate decarboxylase, and indole-3-acetate dehydrogenase. To establish a bio-based production of IAA, the aspC, ipdC, and iad1 from Escherichia coli, Enterobacter cloacae, and Ustilago maydis, respectively, were expressed under control of the tac, ilvC, and sod promoters in C. glutamicum. Cells harboring ipdC produced tryptophol, indicating that the ipdC product is functional in this host. Analyses of SDS-PAGE and enzyme activity revealed that genes encoding AspC and Iad1 were efficiently expressed from the sod promoter, and their enzyme activities were 5.8 and 168.5 nmol/min/mg-protein, respectively. The final resulting strain expressing aspC, ipdC, and iad1 produced 2.3 g/l and 7.3 g/l of IAA from 10 g/l L-tryptophan, respectively, in flask cultures and a 5-L bioreactor.

Upregulation of Nitric Oxide Synthase Activity by All-trans Retinoic Acid and 13-cis Retinoic Acid in Human Malignant Keratinocytes

  • Moon, Ki-Young
    • Biomedical Science Letters
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    • v.25 no.2
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    • pp.196-200
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    • 2019
  • Effect of retinoids, i.e., all-trans retinoic acid and 13-cis retinoic acid, on the activity of nitric oxide synthase (NOS) was evaluated in human malignant keratinocytes to examine the possible correlation of retinoids with NOS activities. All-trans retinoic acid and 13-cis retinoic acid did not alter the nitric oxide (NO) production. However, in the presence of lipopolysaccharide (LPS, $1{\mu}g/mL$), they significantly increased NO release in a dose-dependent manner until 48 h at concentrations of $50{\sim}100{\mu}M$. The degree of upregulation of NO by all-trans retinoic acid and 13-cis retinoic acid increased up to 35% and 37%, respectively, compared to that by the control, which demonstrated the upregulation of LPS-inducible nitric oxide synthase (iNOS)-dependent generation of NO as well as showing a crucial link between retinoids-induced activity and NOS. Findings of this study now suggest that the upregulation of LPS-iNOS activity may be associated with modulation of retinoids-induced control of cellular developmental processes, which may produce new therapeutics of retinoids in the complexity of how NO affects human keratinocytes.

One-Step Engineering of a Stable, Selectable Marker-Free Autoluminescent Acinetobacter baumannii for Rapid Continuous Assessment of Drug Activity

  • Jiang, Huofeng;Gao, Yamin;Zeng, Sheng;Wang, Shuai;Cao, Zhizhong;Tan, Yaoju;Yin, Huancai;Liu, Jianxiong;Zhang, Tianyu
    • Journal of Microbiology and Biotechnology
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    • v.29 no.9
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    • pp.1488-1493
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    • 2019
  • The rising cases of multidrug-resistant Acinetobacter baumannii (Ab) and the lack of effective drugs call for quick attention. Here, based on a Tn7 transposon and Xer/dif system, we constructed a stable, selectable marker-free autoluminescent Ab capable of producing visible light without extra substrates. Utilization of this autoluminescent reporter strain has the potential to reduce the time, effort and costs required for the evaluation of activities of anti-Ab drug candidates in vitro.

Quantitation and Radical Scavenging Activity Evaluation of Iridoids and Phenylethanoids from the Roots of Phlomis umbrosa (Turcz.) using DPPH Free Radical and DPPH-HPLC Methods, and their Cytotoxicity

  • Le, Duc Dat;Nguyen, Duc Hung;Zhao, Bing Tian;Min, Byung Sun;Song, Si Whan;Woo, Mi Hee
    • Natural Product Sciences
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    • v.25 no.2
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    • pp.122-129
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    • 2019
  • The roots of Phlomis umbrosa (Turcz.) (Phlomidis Radix) have been traditionally used to treat cold, reduce swelling and staunch bleeding. Four iridoids (1 - 3 and 5) and six phenylethanoid derivatives (4, and 6 - 10) were isolated from the roots of P. umbrosa. A simple, sensitive, and reliable analytical HPLC/PDA method was developed, validated, and applied to determine 10 marker compounds in Phlomidis Radix. Furthermore, the isolates were evaluated for cytotoxic and anti-oxidant activities as well as DPPH-HPLC method. Among them, compounds 4 and 6 - 9 displayed potent anti-oxidant capacities using DPPH assay with $IC_{50}$ values of $27.7{\pm}2.4$, $10.2{\pm}1.1$, $18.0{\pm}0.8$, $19.1{\pm}0.3$, and $19.9{\pm}0.6{\mu}M$, and compounds 6, 8, and 9 displayed significant cytotoxic activity against HL-60 with $IC_{50}$ values of $35.4{\pm}3.1$, $18.6{\pm}2.0$, and $42.9{\pm}3.0{\mu}M$, respectively.

Comparison of the Effects of Different Adduction Loads on EMG Activities of Selected Shoulder Muscles During Shoulder External Rotation Exercise in Healthy Young People

  • Peng, Cheng;Bae, Chang-Hwan;Choi, Eun-Hong;Kim, Myoung-Kwon
    • Journal of the Korean Society of Physical Medicine
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    • v.14 no.2
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    • pp.1-7
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    • 2019
  • PURPOSE: This study was conducted to investigate effects of shoulder adduction load on rotator cuff muscles, including the infraspinatus, during the external rotation exercise of shoulder. METHODS: This study investigated 16 healthy university students from Daegu University. Before the study started, all participants understood the content of this study. They signed an informed consent form. Five electrodes for surface electromyography (sEMG) were attached to their infraspinatus, middle deltoid, posterior deltoid, upper trapezius and pectoralis major. The participants then underwent the shoulder external rotation exercise with the shoulder adduction at three loads (0 mmHg, 20 mmHg and 40 mmHg) that were controlled using a stabilizer Pressure $Bio-feedback^{TM}$ device. The surface electrodes recorded the electromyographic data during the external rotation exercise of shoulder. RESULTS: The infraspinatus was most activated when the shoulder adduction pressure was 40 mmHg during the external rotation exercise of shoulder. The infraspinatus activation significantly increased when the shoulder adduction pressure intensity increased, while the middle deltoid activation and the posterior deltoid activation significantly decreased (p<.05). CONCLUSION: In conclusion, increases in shoulder adduction load intensity during shoulder external rotation exercises can have a positive effect on the infraspinatus, which consists of rotator cuff muscles, with minimal activity in the middle and posterior deltoid.