Cited by 485Probiotics and Fermented FoodsMicrobial Metabolites in Food BiotechnologyInfant Nutrition and Health

Enhancement of immunity in the elderly by dietary supplementation with the probiotic Bifidobacterium lactis HN019

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Gill, Harsharnjit S, Rutherfurd, Kay J, Cross, Martin L, Gopal, Pramod K·2001·The American Journal of Clinical Nutrition

Abstract

Background The aging process can lead to a decline in cellular immunity. Therefore, the elderly could benefit from safe and effective interventions that restore cellular immune functions.Objective We determined whether dietary supplementation with the known immunostimulating probiotic Bifidobacterium lactis HN019 could enhance aspects of cellular immunity in elderly subjects.Design Thirty healthy elderly volunteers (age range: 63-84 y; median: 69 y) participated in a 3-stage dietary supplementation trial lasting 9 wk. During stage 1 (run-in), subjects consumed low-fat milk (200 mL twice daily for 3 wk) as a base-diet control. During stage 2 (intervention), they consumed milk supplemented with B. lactis HN019 in a typical dose (5 x 10(10) organisms/d) or a low dose (5 x 10(9) organisms/d) for 3 wk. During stage 3 (washout), they consumed low-fat milk for 3 wk. Changes in the relative proportions of leukocyte subsets and ex vivo leukocyte phagocytic and tumor-cell-killing activity were determined longitudinally by assaying peripheral blood samples.Results Increases in the proportions of total, helper (CD4(+)), and activated (CD25(+)) T lymphocytes and natural killer cells were measured in the subjects' blood after consumption of B. lactis HN019. The ex vivo phagocytic capacity of mononuclear and polymorphonuclear phagocytes and the tumoricidal activity of natural killer cells were also elevated after B. lactis HN019 consumption. The greatest changes in immunity were found in subjects who had poor pretreatment immune responses. In general, the 2 doses of B. lactis HN019 had similar effectiveness.Conclusion B. lactis HN019 could be an effective probiotic dietary supplement for enhancing some aspects of cellular immunity in the elderly.

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Crossref · 10.1093/ajcn/74.6.833

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  • Administration of specific strains of Lactobacilli and Bifidobacteria as probiotics, as well as fructooligosaccharides, galactooligosaccharides, and other prebiotics, or the combination of both, might constitute a benefit for immunocompromised people.

    “Therefore, the administration of specific strains of Lactobacilli and Bifidobacteria as probiotics as well as fructooligosaccharides, galactooligosaccharides, and other prebiotics, or the combination of both might constitute a benefit for immunocompromised people (118–122).”

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Authors
Gill, H. S., Rutherfurd, K. J., Cross, M. L., & Gopal, P. K.
Affiliations
Massey University (NZ)
Venue
The American Journal of Clinical Nutrition
Publisher
Elsevier BV
Published
2001-12
Volume
74
Issue
6
Pages
833-839
ISSN
0002-9165 (ISSN-L)
OpenAlex
W1905558879
Cited by
485
References
40
Citations by year
2026: 3 · 2025: 10 · 2024: 11 · 2023: 17 · 2022: 25 · 2021: 35 · 2020: 24 · 2019: 21 · 2018: 19 · 2017: 29 · 2016: 20 · 2015: 15 · 2014: 19 · 2013: 23 · 2012: 23
FWCI
21.96
Type
journal article
Language
en
Open access
Locations
  • American Journal of Clinical Nutrition (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Probiotics and Fermented Foods
  • Health Sciences › Nursing › Nutrition and Dietetics › Microbial Metabolites in Food Biotechnology
  • Health Sciences › Nursing › Nutrition and Dietetics › Infant Nutrition and Health
Keywords
probiotics, dietary supplementation, cell-mediated immunity, older adults, aging, T cells, natural killer cells, phagocytic activity, milk supplementation, immunosenescence
MeSH terms
Aged, Aged, 80 and over, Aging, Animals, Bifidobacterium, Female, Humans, Immunity, Cellular, Killer Cells, Natural, Leukocytes, Male, Middle Aged, Milk, Phagocytosis, Colony Count, Microbial, Dietary Supplements, Probiotics

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