Related Experiment Videos
[Decrease of placental amine oxidase activities in premature birth].
Voprosy Meditsinskoi Khimii
|July 1, 1983
Summary
Reduced placental amine deamination is linked to premature labor. This study found lower enzyme activity in placentas from premature births, suggesting a role in the condition.
Area of Science:
- Biochemistry
- Obstetrics
- Enzymology
Background:
- Premature labor is a significant obstetric complication.
- Amine metabolism plays a crucial role in physiological processes, including pregnancy.
Purpose of the Study:
- To investigate the activity of amine-deaminating enzymes in placental extracts from women with normal and premature labor.
- To explore the relationship between amine deamination rates and the occurrence of premature labor.
Main Methods:
- Collected placental samples from 48 women (normal and premature labor).
- Assayed the deamination rates of serotonin, tyramine, beta-phenylethylamine, putrescine, cadaverine, and histamine in placental extracts.
- Analyzed correlations between deamination rates of different amines.
Main Results:
- Placental extracts from premature labor exhibited significantly decreased deamination rates for all studied amines compared to normal labor.
- Specific correlations were observed between the deamination of serotonin and tyramine, and between putrescine and cadaverine.
- Deamination of beta-phenylethylamine and histamine showed independent activity patterns.
Conclusions:
- Decreased activity of placental amine-deaminating enzymes may contribute to the pathophysiology of premature labor.
- Evidence suggests the presence of at least two distinct monoamine oxidase forms and two diamine oxidase forms in the human placenta.