• 제목/요약/키워드: Immunomodulator

검색결과 128건 처리시간 0.024초

Protective Effects of Ig Y against Diarrhea in Suckling Piglets

  • Wen Jin;Han, Jeong-hee;Kwang Jeong
    • 한국수의병리학회:학술대회논문집
    • /
    • 한국수의병리학회 2003년도 추계학술대회초록집
    • /
    • pp.43-43
    • /
    • 2003
  • Porcine epidemic diarrhea (PED), transmissible gastroenteritis (TGE) are an acute viral enteritis. colibacillosis by E coli is a microbial enteritic disease in suckling piglets[1]. These infectious intestinal diarrheal diseases cause severe diarrhea to suckling piglets, so that lead to enormous economical loss in swine-product industries. Ig-Top (AD Biotech, Korea) is a immunomodulator with IgY the specific yolk-antibody for PED, TGE and E. coli and oligosaccharide. The purpose of this study was to investigate protective effects against PED virus, TGE virus E.coli and in suckling piglets by oral administration of the Ig-Top. (omitted)

  • PDF

Immunomodulatory Effects of Hypocrellin A on MHC-restricted Antigen Processing

  • Park, Sun-Im;Im, Sun-A;Kim, Ki-Hyang;Lee, Chong-Kil
    • IMMUNE NETWORK
    • /
    • 제11권6호
    • /
    • pp.412-415
    • /
    • 2011
  • Hypocrellin A has gained much attention in recent years due to its light-induced antitumor, antifungal and antiviral activities. Here we report that hypocrellin A exerts immunomodulatory effects on MHC-restricted presentation of antigen. Hypocrellin A inhibited class II-MHC restricted presentation of exogenous antigen, but not class I MHC-restricted presentation of exogenous antigen, in dendritic cells. Hypocrellin A also inhibited the cytosolic pathway of endogenous antigen presentation. However, hypocrellin A did not inhibit the expression of class I and class II MHC molecules on dendritic cells (DCs), the phagocytic activity of DCs, or the $H-2K^b$-restricted presentation of a synthetic peptide, SIINFEKL. These results show that hypocrellin A differentially modulates the MHC-restricted antigen presentation pathways.

Augmentation of Macrophage Antitumor Activities and Nitric Oxide Production by Oregonin

  • Joo, Seong-Soo;Kim, Han-Jun;Kwon, Hee-Seung;Lee, Do-Ik
    • Archives of Pharmacal Research
    • /
    • 제25권4호
    • /
    • pp.457-462
    • /
    • 2002
  • Oregonin, a diarylheptanoid derivative from Alnus hirsuta Turcz, Betulaceae, was evaluated for its antitumor activity. Oregonin, known to have an antitumor function, and is a novel immunomodulator, which may augment macrophage activity. MTT assays and NO production tests were performed in order to investigate the cytotoxicity of oregonin in tumor cells and to examine its influence on macrophage in detail. In this study, the tumoricidal activity was also evaluated by a MTT assay. The cytotoxicity measurements in the oregon in-treated group both in vitro and in vivo showed a significant difference from that of the control group. In vivo, oregonin significantly increased NO production in a dose-dependent manner, and in vitro, the thioglycolate-induced inflammatory macrophages increased NO production in a dose-dependent manner after incubation. These results suggest that oregonin reacts with both the inflammatory and non-inflammatory macrophages in a similar way.

The Potential of Centella asiatica (Linn.) Urban as an Anti-Microbial and Immunomodulator Agent: A Review

  • Harun, Nurul Hikmah;Septama, Abdi Wira;Ahmad, Wan Amir Nizam Wan;Suppian, Rapeah
    • Natural Product Sciences
    • /
    • 제25권2호
    • /
    • pp.92-102
    • /
    • 2019
  • Centella asiatica (Linn.) Urban (Umbelliferae) which is also known as 'pegaga' is highly consumed and eaten raw as 'ulam' in Malaysia. C. asiatica is used in traditional medicines to treat various health conditions such as rheumatism, inflammation, syphilis, skin diseases and diarrhoea. Various reports exhibited that the crude extracts and isolated bioactive compounds of C. asiatica possessed a broad range of pharmacological activities such as anti-oxidant, anti-diabetic, anti-tumor, wound healing, anti-microbial, anti-inflammatory, immunomodulatory, hepatoprotective and memory enhancing properties. The pharmacological validation on anti-microbial and immunomodulatory of C. asiatica is very limited and several existence review papers related for this plant had not been focused for both activities. This review therefore attempts to combine the existing literature to offer immense scope for researchers engaged in validation of the traditional claims and bioactivities of this plant related with anti-microbial and immunomodulatory potential.

Protective effects of Ginsan against Cyclophosphamide-induced immunosuppression in mice

  • Shim, Ji-Young;Ahn, Ji-Yeon;Han, Young-Soo;Jung, In-Sung;Yun, Yeon-Sook;Song, Jie-Young
    • 대한약학회:학술대회논문집
    • /
    • 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.1
    • /
    • pp.206.1-206.1
    • /
    • 2003
  • The immunomodulator Ginsan has been found previously by us to stimulate the secretion of high levels of IL -1. IL -6 and TNF-alpha in irradiated mice. These cytokines are known to induce proliferation and differentiation of hematopoietic progenitor cells from the spleen and bone marrow and to protect mice from DNA-damaging agents. The present studies were evaluated as a cytoprotective agent against toxicity of the alkylating drugs. (omitted)

  • PDF

Macrophages로부터 IL-1β 분비 및 전사에 있어서 한국산 겨우살이 추출물 M11C (non-lectin components)의 효과 (The effect of Korean mistletoe extract M11C (non-lectin components) on IL-1β release and expression from macrophages)

  • 장성호;전명하;강태봉;문세환;이준호;성낙술;이성태;김종배;허억
    • IMMUNE NETWORK
    • /
    • 제1권2호
    • /
    • pp.170-178
    • /
    • 2001
  • Background: Korean mistletoe (Viscum album) extract has been found to posses immunostimulatory activity. In this study, Korean mistletoe extract, M11C (non-lectin components), was used to know whether this extract might activate mouse peritoneal macrophages to produce interleukin $1{\beta}$ (IL-$1{\beta}$). Methods: Hemagglutination assay was carried out to examine whether M11C contained a lectin or not. To know the effect of M11C on the production of IL-$1{\beta}$, the macrophages were treated by the M11C, and then collected the supernatant (M11C stimulated macrophages-conditioned media; MMCM). MMCM was analyzed for the IL-$1{\beta}$ quantification and mRNA expression by means of ELISA and RT-PCR, respectively. Results: Maximum effective dose and time of M11C on IL-$1{\beta}$ production from macrophages were $20{\mu}g/m{\ell}$ and 8 hours, respectively. This ELISA data was reconfirmed by immunoblotting assay. indicating that M11C is a good candidate for an immunomodulator. The dose and time dependent effects of M11C on the expression of IL-$1{\beta}$ mRNA from macrophages was also shown in expression of mRNA detected by RT-PCR. Treatment dose and time for the maximum expression of IL-$1{\beta}$ mRNA were $20{\mu}g/m{\ell}$ and 4 hours, respectively. Maximum gene expression of IL-$1{\beta}$ was much earlier than maximum production of it. Conclusion: As results, Korean mistletoe extract, M11C, may be used for an immunomodulator. This will be able to make up for and solve the problems caused by existent immunoagent with many adverse effects through many other studies in future including one molecule extraction.

  • PDF

버섯첨가 두부의 면역활성에 미치는 영향 (The Effects of Tofu (Soybean curd) Containing Mushrooms on the Immune Activities)

  • 김종봉;이용호
    • 한국식품저장유통학회지
    • /
    • 제18권6호
    • /
    • pp.961-966
    • /
    • 2011
  • 본 연구는 버섯성분을 함유한 두부의 면역조절물질로의 가치를 평가하고자 수행하였다. 표고버섯(Letino edodes)과 민자주방망이버섯(Lepista nuda)의 자실체와 균사체를 두유에 첨가하고 응고제로 $CaSO_4{\cdot}2H_2O$ 또는 젖산발효추출물을 사용하여 두부를 만들었다. 두부와 버섯성분이 함유된 두부의 영양성분을 분석하였다. Sandwich ELISA를 이용하여 비장세포 배양액에서의 IFN-${\gamma}$와 IL-4및 TNF-${\alpha}$농도를 분석하였으며, 또한 혈장과 비장세포 배양액에서 IgG1, IgG2a 및 IgE등의 농도를 측정하였다. 조단백과 조지질은 버섯성분을 함유한 두부에서 감소되었으나, 인은 유의적으로 증가하였다. IFN-${\gamma}$는 자실체나 두부를 투여한 생쥐에서 유의적으로 감소하였으며, IL-4는 표고버섯 자실체가 함유된 두부를 투여한 생쥐에서 크게 감소하였다. TNF-${\alpha}$는 표고버섯 성분을 함유한 두부를 투여한 생쥐에서 유의적으로 증가하였다. 혈장의 IgG1은 거의 모든 실험군에서 증가되었으나, IgG2a는 대조군에 비해 큰 변화가 없었다. 비장임파구 배양액에서 측정한 IgG1 와 IgG2a의 농도는 자실체나 균사체를 첨가한 두부의 대부분의 그룹들에서 현저하게 높게 나타났다. IgE의 혈장농도는 두부나 표고버섯을 투여한 생쥐에서 크게 증가하였으나 버섯 성분을 첨가한 두부 투여 생쥐그룹에서는 그 생성이 억제되었다. 이러한 결과들은 버섯 성분을 함유한 두부들이 면역활성에 영향을 준다는 것을 나타내며, 면역활성의 관점에서 두부와 표고버섯의 혼합물은 개발가치가 있는 것으로 사료된다.

A Review On Nigella sativa (Kalonji) Seeds: A Universal Healer

  • Areefa, Anjum;Mohd, Aslam;Shah, Chaudhary Shahid
    • 셀메드
    • /
    • 제10권2호
    • /
    • pp.11.1-11.14
    • /
    • 2020
  • Nigella sativa commonly known as Black seed, Black cumin or Kalonji (Family Ranunculaceae) is a widely used for its miraculous healing power. Use of N. sativa seeds and oil has splendid historical past in diverse traditional systems of medicine and food. In Tibb-e-Nabwi (Prophetic Medicine), it is considered as one of the greatest forms of healing medicine. Phytochemically; it contains fixed oil, protein, alkaloids saponin and essential oil. Therapeutic properties of this plant are due to the presence of thymoquinone which is one of major active component and has different beneficial properties. In Unani System of Medicine the diseases are treated with nontoxic herbal drugs. As per Unani classical literature N. sativa perform various pharmacological actions like carminative, anti-inflammatory, analgesic, diuretic, emmenagogue, galactagogue, expectorant etc. Ample of phytochemical, pharmacological and clinical researches has been executed on N. sativa., which may include antidiabetic, anticancer, immunomodulator, analgesic, antimicrobial, anti-inflammatory, bronchodilator, hepato-protective, renal protective, gastro-protective, antioxidant properties, etc. This review is an effort to summarize the literature on scientific researches of pharmacognostical characteristics, chemical composition and pharmacological activities of the kalonji seeds

영지버섯 생장점 단백다당체 GLB의 대식세포 활성화 효과 (Activation of Macrophages by GLB, a Protein-polysaccharide of the Growing Tips of Ganoderma Lucidum)

  • 오정연;조경주;정수현;김진향;;정경수
    • 약학회지
    • /
    • 제42권3호
    • /
    • pp.302-306
    • /
    • 1998
  • In the previous study we described the antitumor activity of GLB, a protein-polysaccharide fraction of the growing tips of Ganoderma lucidum, against sarcoma 180 solid tu mor in ICR mice. In this study we investigated the stimulatory activity of GLB on macrophages. When analyzed using a flow cytometer, GLB ($100{\mu}g/ml$) was found to increase the phagocytic activity of the BALB/c mouse peritoneal macrophages as well as chicken macrophage BM2CL cells against FITC-labeled C.albicans by 55.2% and 21.2%, respectively. GLB also increased the spreading and the expression of MHC class II molecules of BM2CL cells as well as the mouse peritoneal macrophages. From these results, it is clear that GLB is a strong stimulator to the macrophages.

  • PDF

In vitro Effects of L-Ascorbic Acid and Acrylamide on Lymphocyte Proliferation in Young and Aged Mice

  • Kang, Nam-Sung;Pyo, Suhk-Neung;Sohn, Eun-Hwa
    • Preventive Nutrition and Food Science
    • /
    • 제15권1호
    • /
    • pp.19-23
    • /
    • 2010
  • This study examined the effects of Acrylamide (ACR) and L-ascorbic acid (AsA) on the proliferation of splenocytes and the mitogen-stimulated lymphocyte proliferation in young (8 weeks) and aged (82 weeks) C57BL/6male mice in vitro. AsA increased splenocyte proliferation in both groups; however, this effect was higher in old mice, while the proliferation of lymphocyte was decreased except for treatment at $1\;{\mu}g/mL$ low concentration in both mice. In addition, ACR treatment resulted in decreased LPS-induced B lymphocyte proliferation and ConA-induced T lymphocyte proliferation in both groups. However, AsA increased LPS/ConA-induced lymphocyte proliferation in young groups and had no effects in old mice except at $0.5\;{\mu}g/mL$ Thus, the present data indicate that there is no difference effect of ACR and AsA on lymphocyte proliferation, whereas the effect of AsA on mitogen-induced cell proliferation was reduced in old mice. Overall, our results suggest that various immunomodulators have differing effects of lymphocytic proliferation on young versus aged mice.