Intrinsic fluorescence of the amniotic fluid

Area of Science:

• Biochemistry
• Obstetrics
• Medical Diagnostics

Background:

• Amniotic fluid plays a crucial role in fetal development.
• Understanding amniotic fluid properties can aid in monitoring pregnancy.
• Intrinsic fluorescence is a characteristic property of biological fluids.

Purpose of the Study:

• To characterize the intrinsic fluorescence of third-trimester amniotic fluid.
• To investigate the potential of amniotic fluid fluorescence as a diagnostic tool.

Main Methods:

• Spectrofluorometric analysis of 33 third-trimester amniotic fluid samples.
• Excitation in the ultraviolet range (310–360 nm).
• Analysis of fluorescence emission spectra and intensity.

Main Results:

• All amniotic fluid samples exhibited intrinsic fluorescence with a consistent emission spectrum shape.
• Fluorescence intensity peaked at 405 nm.
• Temperature and pH variations had minimal impact on the emission spectrum.
• Newborn urine showed similar fluorescence at higher intensities.

Conclusions:

• Amniotic fluid possesses a unique, measurable fluorescence signature.
• This fluorescence is stable across typical physiological temperature and pH ranges.
• Amniotic fluid fluorescence could potentially serve as a novel biomarker for fetal age, organ maturation, and distress.