[Analysis of trace elements in the deaf-muted children among ethnic minorities in Urumchi]

To explore the relationship between trace elements and auditory function in the deafness children among ethnic minorities in Urumchi.

There were 27 deaf-muted children in this study and 30 children with normal hearing as control. Sample of serum and hair from two groups were collected, and we tested 17 kinds of trace elements by using atomic absorption spectrophotometer and inductively coupled plasma emission spectrometer.

The content of trace elements in serum including Zn, Cu, Fe, Cd, Se, V and Pb from deaf-muted group was more higher than that of control group (P < 0.01), however, other trace elements including Mn, Sr, Sn, and Bi was much lower than that of control group (P < 0.01). Then, the content of those trace elements including Ba, Cr, Ag, Co, Ti, and Ni in serum from both testing and control groups was found no significant difference with each other (P > 0.05). On the other hand, the content of the trace elements including Sn and Se in hairs from deaf-muted group was more higher than that of control group (P < 0.05), but the content of the trace elements including Zn, Fe, Co, Mn, Sr, V, Pb, Ni, Cr, Ti and Ba in hairs from deaf-muted group was much lower than that of control group (P < 0.05), while the content of the trace element including Cu, Ag, Cd, and Bi in hairs from deaf-muted group was found no significant difference between each other (P > 0.05).

The content of some trace elements in serum and hairs of deaf-muted children is found a significant difference compared with children with normal hearing. This study indicates that some trace elements may relate to auditory function among ethnic minorities in Urumchi.