• Title/Summary/Keyword: Enhance immunity

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Role of Innate Immunity in Colorectal Cancer

  • Bora Keum
    • Journal of Digestive Cancer Research
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    • v.6 no.1
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    • pp.11-15
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    • 2018
  • Chemotherapy and surgical resection are the mainstay of cancer treatment. Particularly for chemotherapy, although it is effective method to care, sometimes cure various cancers, there are many different status of cancer not being controlled by chemotherapy such as recurrence and resistance to chemotherapy. In order to overcome those difficulties during cancer therapy, immunotherapy targeting immune cells and immune associated factors to enhance cancer immunity has been highlighted. Innate immunity plays important roles on initial stage of cancer immunity that are detecting, killing cancer cells and initiating adaptive immunity for cancer. So many basic and clinical studies to manage innate immunity for cancer therapy have been going on, and most of them were to stimulate innate immune cells including dendritic cell, macrophage, monocyte, and natural killer cell in various ways. They showed promising results but still there are many things to be resolved before clinical application. Herein, I review the role of innate immune cells and therapeutic trials for colorectal cancer.

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Generalized Asymmetrical Bidirectional Associative Memory for Human Skill Transfer

  • T.D. Eom;Lee, J. J.
    • 제어로봇시스템학회:학술대회논문집
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    • 2000.10a
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    • pp.482-482
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    • 2000
  • The essential requirements of neural network for human skill transfer are fast convergence, high storage capacity, and strong noise immunity. Bidirectional associative memory(BAM) suffering from low storage capacity and abundance of spurious memories is rarely used for skill transfer application though it has fast and wide association characteristics for visual data. This paper suggests generalization of classical BAM structure and new learning algorithm which uses supervised learning to guarantee perfect recall starting with correlation matrix. The generalization is validated to accelerate convergence speed, to increase storage capacity, to lessen spurious memories, to enhance noise immunity, and to enable multiple association using simulation work.

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Shiga Toxins Trigger the Secretion of Lysyl-tRNA Synthetase to Enhance Proinflammatory Responses

  • Lee, Moo-Seung;Kwon, Haenaem;Nguyen, Loi T.;Lee, Eun-Young;Lee, Chan Yong;Choi, Sang Ho;Kim, Myung Hee
    • Journal of Microbiology and Biotechnology
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    • v.26 no.2
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    • pp.432-439
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    • 2016
  • Shiga toxins (Stxs) produced by Shiga toxin-producing Escherichia coli (STEC) strains are major virulence factors that cause fatal systemic complications, such as hemolytic uremic syndrome and disruption of the central nervous system. Although numerous studies report proinflammatory responses to Stx type 1 (Stx1) or Stx type 2 (Stx2) both in vivo and in vitro, none have examined dynamic immune regulation involving cytokines and/or unknown inflammatory mediators during intoxication. Here, we showed that enzymatically active Stxs trigger the dissociation of lysyl-tRNA synthetase (KRS) from the multi-aminoacyl-tRNA synthetase complex in human macrophage-like differentiated THP-1 cells and its subsequent secretion. The secreted KRS acted to increase the production of proinflammatory cytokines and chemokines. Thus, KRS may be one of the key factors that mediate transduction of inflammatory signals in the STEC-infected host.

Twisted Differential Line Structure on High-Speed Printed Circuit Boards to Enhance Immunity to Crosstalk and External Noise

  • Kam, Dong-Gun;Kim, Joung-Ho
    • The Proceeding of the Korean Institute of Electromagnetic Engineering and Science
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    • v.14 no.1
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    • pp.35-42
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    • 2003
  • Differential signaling has become a popular choice for high-speed interconnection schemes on Printed Circuit Boards (PCBs), offering superior immunity to external noise. However, conventional differential transmission lines on PCBs have problems, such as crosstalk and radiated emission. To overcome these, we propose a Twisted Differential Line (TDL) structure on a multi-layer PCB. Its improved immunity to crosstalk noise and the reduced radiated emission has been successfully demonstrated by measurement. The proposed structure is proven to transmit 3 Gbps digital signals with a clear eye-pattern. Furthermore, it is subject to much less crosstalk noise and achieves a 13 dB suppression of radiated emission. Index Terms - Twisted Differential Line, Differential Signaling, Crosstalk, Radiated Emission, Transmission Line, Twisted Pair

EFFECT OF VITAMIN E AND SELENIUM ON IMMUNITY IN NEWBORN JERSEY AND BUFFALO CALVES

  • Afzal, M.;Hussain, M.;Khan, K.N.M.;Munir, R.
    • Asian-Australasian Journal of Animal Sciences
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    • v.1 no.1
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    • pp.13-19
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    • 1988
  • Effect of vitamin E and selenium supplementation on immunity was studied in newborn Jersey and buffalo calves. The supplement contained 500 mg vitamin E and $200\;{\mu}g$ selenium; and was fed daily from birth to day 30. Differences in weight gain, total leucocytic count, differential leucocytic count, antibody titre and susceptibility to disease were found to be nonsignificant between supplemented and control calves during the study period of 3 months. Vitamin E seemed to enhance the recovery from disease in buffalo calves. Buffalo calves were found to be more sensitive to selenium toxicity than Jersey calves.

Ginseng, the 'Immunity Boost': The Effects of Panax ginseng on Immune System

  • Kang, Soo-Won;Min, Hye-Young
    • Journal of Ginseng Research
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    • v.36 no.4
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    • pp.354-368
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    • 2012
  • Thousands of literatures have described the diverse role of ginseng in physiological processes such as cancer, neurodegenera tive disorders, insulin resistance, and hypertension. In particular, ginseng has been extensively reported to maintain homeostasis of the immune system and to enhance resistance to illness or microbial attacks through the regulation of immune system. Immune system comprises of different types of cells fulfilling their own specialized functions, and each type of the immune cells is differentially influenced and may be simultaneously controlled by ginseng treatment. This review summarizes the current knowledge on the effects of ginseng on immune system. We discuss how ginseng regulates each type of immune cells including macrophages, natural killer cells, dendritic cells, T cells, and B cells. We also describe how ginseng exhibits beneficial effects on controlling inflammatory diseases and microbial infections.

Potential Effects of Pigmented rice on Immunity: A Review Focusing on Anthocyanins, Gamma-oryzanol, and Arabinoxylan

  • Ayoung Lee;Juyeon Ko;Su-Jin Ahn;Hyung Joo Kim;Seung-Sik Min;Eunmi Kim
    • Journal of Food and Nutrition Research
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    • v.9 no.1
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    • pp.26-31
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    • 2021
  • Functional food ingredients from natural sources are gaining popularity for treating chronic inflammation associated with metabolic diseases (e.g., diabetes, hypertension, and obesity) due to their lower toxicity and no severe side effects. Pigmented rice is a natural food source in Korea commonly consumed in the whole grain form to improve the immune system. In particular, pigmented rice bran contains various nutritional components involved in the immune benefits. Of many nutrients in pigmented rice bran, anthocyanins, gamma-oryzanol, and arabinoxylan have notably shown to enhance natural killer cell activity and reduce pro-inflammatory cytokines. Especially, pigmented rice has higher amounts of anthocyanins and gamma-oryzanol than white rice. In this review, to provide further insight into the immune effects of the pigmented rice, we have focused on the immune benefits of bioactive substances (e.g., anthocyanins, gamma-oryzanol, and arabinoxylan) from pigmented rice compared to white rice. The pigmented rice has potential effects on immunity, and it can be used as a functional food.

Recent Progress in Understanding Host Mucosal Response to Avian Coccidiosis and Development of Alternative Strategies to Mitigate the Use of Antibiotics in Poultry Production

  • Lillehoj, Hyun-Soon;Lee, Sung-Hyen;Jang, Seung-Ik;Kim, Duk-Kyung;Lee, Kyung-Woo
    • Korean Journal of Poultry Science
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    • v.38 no.4
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    • pp.275-284
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    • 2011
  • As the world population grows and developing countries become more affluent, the global consumption of meat will increase by more than 50% within the next 10 years. Confronting the increased demand for poultry food products are emerging field diseases, increasing regulatory bans of antimicrobial growth promoters, high-density growth conditions, and waste management. Although biotechnology offers solutions to some of these challenges, basic studies are needed to better understand the complex interaction between the intestinal microbiome, host immunity and the environment. This presentation will focus on emerging strategies to enhance gut immunity and to decrease economic losses due to poultry diseases. This presentation will highlight recent developments in coccidiosis research and provide information on host immunity, immunomodulation, and the latest advances in dietary and nutritional approaches against coccidiosis. Such information will magnify our understanding of host-parasite biology, mucosal immunology, and design of future nutritional interventions and vaccination strategies for coccidiosis.

Induction of Enhancement of Anti-Tumor Immunity by Polysaccharides Fractionated from Acanthopanx Senticosus (가시오가피 다당체에 의한 항종양면역의 유도)

  • Yoon, Taek-Joon;Sung, Ji-Yeon;Yu, Kwang-Won;Lee, Ho;Lee, Kwang-Ho
    • Korean Journal of Pharmacognosy
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    • v.38 no.2 s.149
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    • pp.117-122
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    • 2007
  • The specific activation of the immune system to control cancer growth in vivo has been a long-standing goal in cancer immunology. Whole tumor Iysates have been used either alone or combined with adjuvants to induce specific immune response in vivo. Here, we examined whether freezing/thawing (F/T) colon26-M3.1 tumor cell admixed with EN-3, glycoprotein purified from Acanthopanx Senticosus, could stimulate in vivo immunity by using a murine experimental tumor metastasis model produced by colon26-M3.1 carcinoma cells. Vaccination of mice with F/T treated colon26-M3.1 carcinoma cells in combination with EN-3 as an adjuvant resulted in a significant inhibition in tumor metastasis of mice against live colon26-M3.1 carcinoma challenge. In addition, the splenocytes from vaccinated mice exhibited a higher proliferating activity and secreted interferon-${\gamma}$. These results suggest that EN-3 can be applied to immunoadjuvant to enhance the antitumor immunity in vivo.

Growth and Physiological Effects of Immunity Feed Additives on the Juvenile Red Sea Cucumber Stichopus japonicus (홍해삼(Stichopus japonicus) 치삼의 성장 및 면역증강을 위한 면역증강사료첨가제의 개발)

  • Namgung, Jin;Ahn, Kyoung-Jin;Yeo, In-Kyu
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.48 no.4
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    • pp.466-473
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    • 2015
  • The juvenile red variant of the sea cucumber Stichopus japonicus is distributed worldwide. It is a valuable food source in Korea, China, and Japan. Major issues in farming the juvenile red variant sea cucumber include growth rates and disease resistance. In recent years, studies have focused on feed additives to enhance immune system and health. In this study, we used a common diet (CD), a nutritional diet (ND; mixed nutritional supplements), and an immunity diet (ID; mixed probiotics, spirulina, and levan) and compared the growth rates and immunity of juvenile red variant sea cucumbers fed the experimental diets for 12 weeks. The growth and survival rates in the ID group were significantly increased (P>0.05). This suggests that the feed additives positively influenced immunity and growth in the ID group. However, the immune activity was exhibit a stabilizing effect, and further investigation of immune effects is required.