Pathog Immun. 2017 Jul 10;2(2):293-307. doi: 10.20411/pai.v2i2.205. eCollection 2017.
Effects of Helminth Eradication on the Immune System.
Pathogens & immunity
Ziva Weisman, Alexander Kalinkovich, Miguel Stein, Zalman Greenberg, Gad Borkow, David Adlerstein, Jemal Ali Mahdi, Zvi Bentwich
Affiliations
Affiliations
- Kaplan Medical Center, Ben-Ari Institute of Clinical Immunology and AIDS Center, Rehovot, Israel.
- Hebrew University Hadassah Medical School, Jerusalem, Israel.
- Public Health Laboratory, Ministry of Health, Jerusalem, Israel.
- Department of Microbiology Immunology and Genetics, Center for Emerging and Tropical Diseases and AIDS, Ben Gurion University of the Negev, Beer Sheba, Israel.
- Department of Microbiology, Immunology and Parasitology, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia.
PMID: 30993247
PMCID: PMC6423624 DOI: 10.20411/pai.v2i2.205
Abstract
INTRODUCTION: Helminth infection has a profound effect on the immune system. However, the precise nature of the immune changes that are elicited by helminth infection have not been sufficiently characterized. Furthermore, the reversibility of these changes after treatment has not been documented sufficiently. We studied the immune profiles of Ethiopian immigrants to Israel at baseline, that is on arrival and at one-year follow-up and compared individuals who received antihelminth treatment during the study period with those who missed the treatment.
METHODS: A longitudinal follow up study involving different groups of subjects was conducted. Baseline data was recorded from the newly arrived Ethiopian immigrants for a series of peripheral blood tests, including: IgE and Eosinophil levels, T-cell populations, T-cell receptor phenotypes, and cytokine measurement. These tests were all repeated after a 1-year interval. Results were compared between the newly arrived Ethiopian immigrants (NEW-Eth-Il), long term Ethiopian immigrants (LT-Eth-Il), and non Ethiopian Israeli controls (NON-Imm-Il).
RESULTS: Of the 184 individuals, 111 were NEW-Eth-Il, who had a high prevalence of helminth infection, the immunological changes were elevated IgE levels and eosinophil counts, decreased CD4/CD8 ratio, increased proportion of HLA-DR+CD3+, HLA-DR+CD4+ and HLA-DR+CD8+ cells, decreased proportion of CD45RA+CD4+ (naive) and CD28+CD8+ cells, increased proportion of CD45RO+CD4+ (memory) cells, and increased secretion of IL-4 and IL-5 (Th2 type cytokines). In the 42 LT-Eth-Il participants, who all had negative tests for helminth infection, we did not observe these immune changes and their immune profile did not differ markedly from that of the NON-Imm-Il controls. The follow-up immune profiles of 33 NEW-Eth-Il who received succesful antihelminth treatment, showed a significant normalization in the above-mentioned variables that was not observed in the 19 NEW-Eth-Il who missed and did not receive the antihelminth treatment.
CONCLUSIONS: These findings demonstrate that helminth infection is associated with profound immune changes that are normalized within a short time after helminth eradication. They also strengthen the hypothesis that effective antihelminth interventions, in areas endemic for intestinal helminths, may have an impact on AIDS and tuberculosis epidemics.
Keywords: Helminth infections; antihelminth treatment; helminths immunology
Conflict of interest statement
No conflict of interest
References
- Immunol Lett. 1999 Jan;65(1-2):109-15 - PubMed
- Am J Trop Med Hyg. 1976 Nov;25(6):818-23 - PubMed
- Clin Exp Immunol. 1999 Mar;115(3):443-50 - PubMed
- J Infect Dis. 1999 Jun;179(6):1502-14 - PubMed
- Leuk Lymphoma. 1999 Jul;34(3-4):207-30 - PubMed
- Immunol Today. 1999 Nov;20(11):485-7 - PubMed
- Parasitol Today. 2000 Jul;16(7):312 - PubMed
- J Clin Invest. 2000 Oct;106(8):1053-60 - PubMed
- AIDS. 2000 Nov 10;14(16):2437-43 - PubMed
- Bull World Health Organ. 2000;78(11):1368-9 - PubMed
- Clin Exp Immunol. 2001 Feb;123(2):219-25 - PubMed
- Scand J Infect Dis. 2001;33(8):568-71 - PubMed
- J Acquir Immune Defic Syndr. 2002 Sep 1;31(1):56-62 - PubMed
- Immunol Rev. 1992 Jun;127:183-204 - PubMed
- Parasitol Today. 1997 Nov;13(11):438-43 - PubMed
- Parasitology. 1992;104 Suppl:S105-19 - PubMed
- J Infect Dis. 2005 Oct 1;192(7):1277-83 - PubMed
- J Immunol. 1991 Feb 15;146(4):1322-7 - PubMed
- Cochrane Database Syst Rev. 2009 Jul 08;(3):CD006419 - PubMed
- Scand J Immunol. 1988 Aug;28(2):147-55 - PubMed
- Immunol Today. 1995 Apr;16(4):187-91 - PubMed
- J Infect Dis. 1994 Oct;170(4):946-54 - PubMed
- Infect Immun. 1993 Dec;61(12):4984-93 - PubMed
- Isr J Med Sci. 1993 Jun-Jul;29(6-7):338-43 - PubMed
- Nature. 1993 Oct 28;365(6449):797-805 - PubMed
- J Infect Dis. 1996 Jan;173(1):269-72 - PubMed
- Clin Exp Immunol. 1996 Feb;103(2):239-43 - PubMed
- Eur J Immunol. 1996 Jun;26(6):1399-403 - PubMed
- Parasitology. 1996 Jun;112 ( Pt 6):561-70 - PubMed
- Immunol Today. 1996 Mar;17(3):138-46 - PubMed
- Immunology. 1997 Apr;90(4):592-9 - PubMed
- J Immunol. 1998 Feb 15;160(4):1992-9 - PubMed
- Clin Exp Immunol. 1998 Jan;111(1):1-2 - PubMed
- Eur J Immunol. 1998 Apr;28(4):1408-16 - PubMed
- J Infect Dis. 1998 May;177(5):1433-7 - PubMed
- AIDS. 1998 Sep 10;12(13):1731-3 - PubMed
- Br Med Bull. 1998;54(2):421-32 - PubMed
- Clin Exp Immunol. 1998 Dec;114(3):414-21 - PubMed
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