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Effect of levamisole supplementation on tetanus vaccination response rates in haemodialysis patients: A randomized double‐blind placebo‐controlled trial
Author(s) -
Fallahzadeh Mohammad Kazem,
Sajjadi Sharareh,
Singh Neeraj,
Khajeh Masomeh,
Sagheb Mohammad Mahdi
Publication year - 2014
Publication title -
nephrology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 61
eISSN - 1440-1797
pISSN - 1320-5358
DOI - 10.1111/nep.12158
Subject(s) - medicine , levamisole , tetanus , placebo , vaccination , randomized controlled trial , immunology , gastroenterology , surgery , alternative medicine , pathology
Levamisole as an immunomodulator drug has been demonstrated to improve the immune response to hepatitis B virus vaccination in haemodialysis patients. The aim of this randomized double‐blind placebo‐controlled trial was to evaluate the effect of levamisole supplementation on tetanus‐diphtheria ( T d) vaccine response rates in haemodialysis patients. Forty haemodialysis patients who had not received tetanus vaccination in a year before investigation and had unprotective anti‐tetanus immunoglobulin G (IgG) levels (<0.1 international unit/mL) were enrolled and randomized into two equal groups to receive one dose of intramuscular T d vaccine supplemented with either levamisole (100 mg) or placebo daily, for 6 days before and 6 days after vaccination. The anti‐tetanus IgG levels were measured 1 and 6 months after vaccination. One month post‐vaccination, four patients were excluded from the levamisole group and two from the placebo group because of either death or renal transplantation. At 1 month, 13 out of 16 (81%) patients in the levamisole group as compared with six out of 18 (33%) patients in the placebo group developed protective anti‐tetanus IgG levels (relative risk = 2.44, 95% confidence interval ( CI)  = 1.21, 4.88). From 1 to 6 months post‐vaccination, one more patient in the levamisole group and two more patients in the placebo group were excluded because of renal transplantation. At 6 months, 11 out of 15 (73%) patients in the levamisole group as compared with four out of 16 (25%) patients in the placebo group still had protective anti‐tetanus IgG levels (relative risk = 2.93, 95% CI  = 1.19, 7.23). Supplementation of T d vaccination with levamisole may enhance seroconversion against tetanus in haemodialysis patients.

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