③Blood zinc levels will influence children's growth(such as height and weight). For the children with low blood zinc levels,their indexes of physical development(height and weight) are more likely below the normal level(χ2=24.52,P<0.01,χ2=29.03,P<0.01);
Results:The average blood Zinc concentration of the group(168 children) is 58.98 umol/L. The children with normal blood Zinc concentrations account for 75.0% and the children with low blood Zinc levels,25.0%;
It was found that the blood zinc and copper levels in children with decreased bone mass were significantly lower than those in children with normal bone mass(P<0. 01,except P<0. 05 for the blood copper level in children 2- 4 years old).
②The blood zinc concentrations of the children has no bearing on gender,but there exist very notable differences according to their ages(χ2=20.08,P<0.01). The proportion of children with Zinc deficiency aged 3 to 6 is larger than the children aged 7 to 12;
The results showed that the patients had lower content of total blood Zn and higher content of Cu than those of the controls ( P <0 05),the total blood Zn had positive correlation with outer blood T lymph cell CD 3,CD 4,CD 4/CD 8( P <0 05),the total blood Zn had negative correlation with outer blood T lymph cell CD 8 ( P <0 05).
The content of zinc in blood of 1012 early gestational woman was deter- mined. 126 cases' blood Zn content was lower than that of the normal level (75～190μg/dL) as observa- tion group, while 126 cases have normal level as comparative group .
The blood Zn level of mothers in the age group 24-28 yr was significantly higher than those of mothers in the age group of 18-23 yr (p>amp;lt;0.05).
No significant correlation could be found between blood Zn and Mg levels in seropositive female/male patients and controls (p>amp;gt;0.05).
The mean blood concentration of Pb (a marker of exposure to toxic agents) was 11?μg/dl in both groups, which showed similar levels of blood Zn and of urinary Ni and Cr, whereas the serum Zn concentration was lower in the atopic group.
In addition, we found that acute increases of blood PRL and TRH do not alter blood Zn++ levels.