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Comparison Between Immunological Markers in Cord Blood of Preterm and Term Babies in Hospital USM Ashari, Noor Suryani Mohd; Hussin, Che Maraina Che; Musa, Mustaffa & Rostenberghe, Han Vans Abstract A cross sectional pilot study using convenient sampling method was conducted to evaluate various immunological parameters in preterm babies and term babies. Cord blood from 36 preterm and 36 term babies was taken and the following parameters were determined: Immunoglobulin G, A and M, Complement 3 and 4 and NBT. The results showed that NBT was significantly reduced in preterm babies compared to term babies (7.5% versus 12.0%; p= 0.001). The complement levels, C3 (0.5114 versus 0.7192 g/l; p<0.001) and C4 (0.07 versus 0.14g/l; p<0.001) were significantly lower in preterm babies than in the term babies. The mean IgG level in preterm babies was significantly lower than in term babies (9.5583 versus 14.2806 g/l, p<0.001). IgM (0.1 versus 0.2g/l; p<0.001) and IgA (0.210 versus 0.225g/l; p=0.036l) levels were significantly lower in the preterm than in term babies. In conclusion, we found that NBT reduction, IgG, IgA, IgM, C3 and C4 levels were significantly lower in the preterm compared to term babies. Keywords Preterm babies, term babies, immunoglobulin, complement, NBT, lymphocyte

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