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Immunomodulatory affect of R10 fraction of garlic extract on natural killer activity

Zuhair M Hassan1, Roya Yaraee, Narges Zare

  • 1Department of Immunology, School of Medical Sciences, Tarbiat Modares University, Tehran, I.R., Iran. hasan_zm@modares.ac.ir

International Immunopharmacology
|August 30, 2003
PubMed

Insights

Garlic compounds can enhance natural killer (NK) cell activity, a key immune defense against cancer. This study isolated a garlic glycoprotein that boosted NK cell activity against tumor cells and inhibited mammary carcinoma growth in mice.

Area of Science:

  • Oncology
  • Immunology
  • Natural Products Chemistry

Background:

  • Dietary compounds can modulate carcinogenesis, but mechanisms are largely unknown.
  • Natural killer (NK) cells are crucial for immune surveillance against cancer.
  • Garlic is a dietary component with potential anti-cancer properties.

Purpose of the Study:

  • To investigate the effect of garlic on natural killer (NK) cell activity.
  • To isolate and characterize active compounds from garlic responsible for NK cell augmentation.
  • To evaluate the in vivo efficacy of garlic extract in preventing spontaneous mammary carcinoma growth.

Main Methods:

  • Garlic extract preparation and administration (20 mg/kg).
  • Isolation of a 14 kDa glycoprotein from garlic extract.
  • In vitro assessment of NK cell augmentation against K562 tumor cells.
  • In vivo studies using Balb/c mice with spontaneous mammary carcinoma.
  • Purification of active fraction (R10) using ultrafiltration and chromatography.
  • NK cytotoxic activity evaluation by flow cytometry.

Main Results:

  • Garlic administration optimally augmented NK activity at 20 mg/kg.
  • An isolated 14 kDa glycoprotein from garlic induced NK augmentation against K562 cells.
  • Garlic extract fraction R10 demonstrated resistance to spontaneous mammary carcinoma growth in mice.
  • Flow cytometry confirmed NK cytotoxic activity.

Conclusions:

  • Garlic contains compounds that can enhance natural killer (NK) cell activity.
  • A specific glycoprotein isolated from garlic exhibits NK-augmenting properties.
  • Garlic extract shows potential in inhibiting mammary carcinoma development in vivo, mediated by NK cell activity.

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