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Abstract Title:

Lymphocyte proliferation and apoptosis in HIV-seropositive and healthy subjects during long-term ingestion of fruit juices or a fruit-vegetable-concentrate rich in polyphenols and antioxidant vitamins.

Abstract Source:

Eur J Clin Nutr. 2004 Feb;58(2):317-25. PMID: 14749753

Abstract Author(s):

P Winkler, S Ellinger, A M Boetzer, B M Arendt, H K Berthold, J K Rockstroh, U Spengler, R Goerlich

Article Affiliation:

School of Medicine, Department of Hemostasis and Transfusion Medicine, University of Duesseldorf, Duesseldorf, Germany.

Abstract:

OBJECTIVE: We investigated whether ingestion of polyphenols from fruit juices or a fruit-vegetable-concentrate affects lymphocyte proliferation and apoptosis in human immunodeficiency virus (HIV)-seropositive (HIV(+)) and HIV-seronegative (HIV(-)) subjects. DESIGN: Randomized, prospective pilot intervention study. SETTING: University of Bonn, Department of General Internal Medicine. SUBJECTS: A total of 23 HIV(+) subjects from the HIV outpatient clinic, 18 HIV(-) controls. INTERVENTIONS: Subjects ingested either 1 l of fruit juice or 30 ml of fruit-vegetable-concentrate daily for 16 weeks in addition to their regular diet. Lymphocyte proliferation and apoptosis were investigated in peripheral blood mononuclear cells at baseline, during 16-weeks of intervention, and after a 6-week washout. Proliferation was assessed by (3)H-thymidine incorporation and apoptosis by nuclear content as measured by flow cytometry. RESULTS: Supplementation of fruit juices increased phytohemagglutinin-induced lymphocyte proliferation (mitotic index) in HIV(+) patients from 18+/-16 to 40+/-34 (P=0.004) and in healthy controls from 27+/-16 to 51+/-21 (P=0.016). Apoptosis was not affected in HIV(+) patients, but rose in healthy controls from 9+/-10 to 34+/-11 (apoptotic index; P=0.001). Intervention with concentrate did not significantly alter proliferation and apoptosis in HIV(+) and HIV(-) subjects. CONCLUSIONS: Even though apoptosis did not change in HIV(+) subjects, ingestion of polyphenol-rich fruit juices might be favorable to HIV(+) patients due to enhanced proliferation, which could restore disturbances in T-cell homeostasis. In healthy controls, increased lymphocyte proliferation during juice consumption was counterbalanced by increased apoptosis.

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Sayer Ji
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