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Non specific immunity in aged healthy subjects and in patients with chronic bronchitis

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Abstract

We investigated the effects of aging on some functional activities (chemotaxis, phagocytosis, nitroblue tetrazolium reduction and candidacidal activity) of peripheral polymorphonuclear and mononuclear phagocytes in 96 healthy subjects and 89 patients with chronic bronchitis, aged 40 to 100 years. The subjects were divided according to age into younger (40–65 years) and older (66–100 years) individuals. No subject was taking any drug known to affect phagocytic functions. A few abnormalities in PMN and monocyte functions were observed in aged healthy subjects, in comparison to the younger ones; in fact, only the chemotactic response to complement-derived chemotactic factors was significantly impaired in elderly healthy individuals. On the contrary, multiple alterations of phagocyte activities, i.e., chemotaxis, phagocytosis, and candidacidal activity were observed in aged subjects with chronic bronchitis, compared to healthy adults. However, the results obtained in older and younger patients with chronic bronchitis were superimposable. The present data suggest that the decline in functional activities of phagocytes in the aged could depend on the effect of the underlying chronic bronchitis on the cellular components of the non-specific host defense system, rather than a direct effect of the aging process.(Aging Clin. Exp. Res. 5: 357-361, 1993)

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Authors and Affiliations

  1. Chair of Chemotherapy and, University of Pavia, Italy

    A. Fietta & C. Merlini

  2. Institute of Respiratory Diseases, University of Pavia, Padiglione Forlanini, Via Taramelli 5, 27100, Pavia, Italy

    C. Grassi

  3. General Pratictioner, Pinarolo Po, Pavia

    P. M. De Bernardi

  4. Pneumological Department, USSL 53, Crema, Italy

    L. Gandola & P. D. Piccioni

Authors
  1. A. Fietta
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  2. C. Merlini
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  3. P. M. De Bernardi
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  4. L. Gandola
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  5. P. D. Piccioni
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  6. C. Grassi
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Fietta, A., Merlini, C., De Bernardi, P.M. et al. Non specific immunity in aged healthy subjects and in patients with chronic bronchitis. Aging Clin Exp Res 5, 357–361 (1993). https://doi.org/10.1007/BF03324187

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  • DOI: https://doi.org/10.1007/BF03324187

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