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Alpha-fetoprotein (AFP, α-fetoprotein; also sometimes called alpha-1-fetoprotein, alpha-fetoglobulin, or alpha fetal protein) is a protein [5] [6] that in humans is encoded by the AFP gene. [ 7 ] [ 8 ] The AFP gene is located on the q arm of chromosome 4 (4q13.3). [ 9 ]
A low AFP in a pregnant person can indicate Down syndrome. There are 3 forms of AFP: L1, L2, and L3. L1 is the form associated most commonly with liver disease and L3 is most commonly associated with malignant tumors. AFP-L3 can be used to detect hepatocellular carcinoma early on when compared to overall AFP levels.
Quantification of inhibin A is part of the prenatal quad screen that can be administered during pregnancy at a gestational age of 16–18 weeks. An elevated inhibin A (along with an increased beta-hCG, decreased AFP, and a decreased estriol) is suggestive of the presence of a fetus with Down syndrome. [28]
The triple test, also called triple screen, the Kettering test or the Bart's test, is an investigation performed during pregnancy in the second trimester to classify a patient as either high-risk or low-risk for chromosomal abnormalities (and neural tube defects). The term "multiple-marker screening test" is sometimes used instead.
This can cause decreased or acute cessation of blood flow, decreased cardiac output, and pulmonary complications in the newborn. [2] The elongated, exposed vessels in lower velamentous cord insertion cases are more readily compressed by the fetus, hence there is an even greater risk of non-reassuring fetal heart rate pattern and emergency ...
Pregnant women have a decreased perception of balance during quiet standing, which is confirmed by an increase in anterior-posterior (front to back) sway. [41] This relationship heightens as pregnancy progresses and significantly decreases postpartum. To compensate for the decrease in balance stability (both actual and perceived), stance width ...
The major uterine and fetal glycoproteins that are associated with the eu-FEDS model in the human include alpha-fetoprotein, CA125, and glycodelin-A (also known as placental protein 14). Regulatory T cells also likely play a role. [11] Also, a shift from cell-mediated immunity toward humoral immunity is believed to occur. [12]
AFP-L3% is the standard for quantifying the L3 isoform of AFP in serum of high risk chronic liver disease (CLD) patients. Studies have shown that AFP-L3% test results of more than 10% can be indicative of early HCC [ citation needed ] or early nonseminomatous germ cell tumor .