Simultaneous Detection and Distribution of Five Juvenile Hormones in 58 Insect Species and the Absolute Configuration in 32 Insect Species

Juvenile hormone (JH) plays an important role in regulating various insect physiological processes. Herein, a novel method (chiral and achiral) for the simultaneous detection of five JHs was established by processing a whole insect without complicated hemolymph extraction. The proposed method was used to determine the distribution of JHs in 58 insect species and the absolute configuration of JHs in 32 species. The results showed that JHSB₃ was uniquely synthesized in Hemiptera, JHB₃ was unique to Diptera, and JH I and JH II were unique to Lepidoptera. JH III was present in most insect species surveyed, with social insects having generally higher JH III titers. Interestingly, JHSB₃ and JHB₃, both double epoxidation JHs, were found in insects with sucking mouthparts. The absolute conformation of JH III and the 10C of the detected JHs were all R stereoisomers.

Lone hyperuricemia during pregnancy: maternal and fetal outcomes

OBJECTIVE

Study of maternal and fetal consequences of lone hyperuricemia during pregnancy and demonstration that lone hyperuricemia is not a risk factor regarding the onset of preeclampsia.

STUDY DESIGN

Retrospective study of two groups of women, one found to have lone hyperuricemia during pregnancy (n=102) and the others with normal serum uric acid levels (n=100).

RESULTS

The only consequence identified of the lone hyperuricemia was a lower birth weight of children born to mothers found to have lone hyperuricemia for more than 2 weeks (P<0.05).

CONCLUSIONS

Lone hyperuricemia is not a risk factor regarding the onset of preeclampsia. It is therefore unnecessary to measure serum uric acid level during a normal pregnancy.