A Single-Center, Randomized Double-Blind Placebo-Controlled Study Evaluating the Effects of Poly-Gamma-Glutamate on Human NK Cell Activity after an 8-Week Oral Administration in Healthy Volunteers
Joint Authors
Kim, Ahrom
Poo, Haryoung
Hong, Jang-Hee
Choi, Jai-Chul
Kim, Kyung-Soo
Sung, Moon-Hee
Lee, Tae-Young
Kim, Sung-Jin
Source
Evidence-Based Complementary and Alternative Medicine
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-12-12
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
A randomized double-blind placebo-controlled immunity study involving 99 healthy volunteers was performed to investigate the effect of poly-γ-glutamate (γ-PGA) on human natural killer (NK) cell activity in peripheral blood.
The volunteers were randomly assigned to one of three groups and orally treated with solutions (25 mL) containing 0 mg (placebo), 250 mg (low dosage), or 500 mg (high dosage) of γ-PGA.
Each volunteer took one dose every 12 hours for 8 weeks.
Blood samples were drawn before the initial treatment and at the 4th and the 8th weeks of treatment.
NK cell activity was assessed by measuring its degranulation, cytokine production, and cytotoxicity against the K562 cell line.
Our results revealed that the cytotoxic activities of NK cells from the high-dosage γ-PGA group were significantly higher (P<0.05 for all comparisons) compared to the low dosage and placebo groups at weeks 4 and 8 after the initial treatment.
This increase in the NK cell activity among peripheral blood mononuclear cells (PBMCs) of healthy individuals was also confirmed in vitro (as assessed by the degranulation and cytokine production).
These results suggest that the oral administration of γ-PGA induces a cell-mediated immunity by increasing the NK cell activity in humans.
American Psychological Association (APA)
Kim, Kyung-Soo& Lee, Tae-Young& Hong, Jang-Hee& Kim, Ahrom& Kim, Sung-Jin& Choi, Jai-Chul…[et al.]. 2013. A Single-Center, Randomized Double-Blind Placebo-Controlled Study Evaluating the Effects of Poly-Gamma-Glutamate on Human NK Cell Activity after an 8-Week Oral Administration in Healthy Volunteers. Evidence-Based Complementary and Alternative Medicine،Vol. 2013, no. 2013, pp.1-6.
https://search.emarefa.net/detail/BIM-487004
Modern Language Association (MLA)
Kim, Kyung-Soo…[et al.]. A Single-Center, Randomized Double-Blind Placebo-Controlled Study Evaluating the Effects of Poly-Gamma-Glutamate on Human NK Cell Activity after an 8-Week Oral Administration in Healthy Volunteers. Evidence-Based Complementary and Alternative Medicine No. 2013 (2013), pp.1-6.
https://search.emarefa.net/detail/BIM-487004
American Medical Association (AMA)
Kim, Kyung-Soo& Lee, Tae-Young& Hong, Jang-Hee& Kim, Ahrom& Kim, Sung-Jin& Choi, Jai-Chul…[et al.]. A Single-Center, Randomized Double-Blind Placebo-Controlled Study Evaluating the Effects of Poly-Gamma-Glutamate on Human NK Cell Activity after an 8-Week Oral Administration in Healthy Volunteers. Evidence-Based Complementary and Alternative Medicine. 2013. Vol. 2013, no. 2013, pp.1-6.
https://search.emarefa.net/detail/BIM-487004
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-487004