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Total lipids, lipid phosphorus, phospholipids and cholesterol were determined in amniotic fluid of 36 normals and 6 mothers with diabetes. Total lipids, lipid phosphorus and phospholipids are significantly decreased in diabetic cases and the decrement was more pronounced in the cases with stillbirth or intrapartum deaths or infants with respiratory distress syndrome. Total cholesterol was significantly decreased in the same cases mentioned above. However, in spite of this decrease the ratio of total cholesterol to total lipids was constant except in cases with prolonged intrauterine fetal death where it was increased.

Total protein, total amino acid, creatinine and the 5 major protein fractions were determined in amniotic fluid samples from 42 normal and 12 premature neonates. Total protein, albumin, globulin, total amino acid, creatinine and A/G ratio were significantly lower in the 6 premature infants who developed the respiratory distress syndrome (RDS) than in the controls. The alpha 1, alpha 2 and gamma globulin levels were within the normal ranges. In the 4 premature stillborn babies, total protein and globulins were significantly higher than those of the controls, while the albumin, total amino acid and creatinine levels were normal. A/G ratio for this group was still lower than that for the former group and much lower than the control ratio. The remaining 2 premature alive infants showed a significant decrease in the alpha 1, alpha 2 globulins and creatinine levels. Slight increase in total amino acid, and significant increase in the beta globulin, while total protein, albumin, gamma globulin and A/G ratio were within the normal ranges.

Amniotic fluid total lipids (T.L.), lipid phosphorus (L.Ph.), phospholipids (Ph.L.), total cholesterol (T.Ch.), total proteins (T.P.) and inorganic phosphorus (I.Ph) were determined in a number of high risk pregnancies and compared to parallel data obtained for full term normal pregnancies. Amniotic fluid T.L., L.Ph., Ph.L. and T.Ch. were significantly decreased in diabetic and toxaemic cases. The decrement in L.Ph. and Ph.L. was more pronounced in diabetic and toxaemic mothers who delivered either still-births or neonates suffering from RDS or in cases of intrapartum death. The L.Ph. and Ph.L. were increased in case of toxaemic mothers who delivered living neonates with no RDS. In spite of the increase in T.Ch. in the same cases; the ratio of T.Ch to T.L. was constant except in cases with prolonged intrauterine foetal death where it was increased.

Total proteins, total-acids, creatinine and the five major protein-fractions were determined in amniotic fluid of 9 diabetic mothers and 42 normal women. The mean value of the estimated patterns in the diabetic subgroup of living full-term infants was within normal, except a significant decrease in creatinine, albumin and gamma-globulin. A highly significant decrease in albumin, gamma-globulin and total amino acids in the amniotic fluid of those given stillbirth infants (SB), while a significant increase was found in both of total proteins and albumin in cases developed respiratory distress syndrome (RDS). In addition to a significant increase in creatinine, alpha 1-, alpha 2- and beta-globulins in both subgroups of SB and RDS. The A/G ratio of the 3 subgroups were significantly decreased especially those of SB.

Total lipids, total cholesterol, phospholipids and inorganic phosphorus were determined in the amniotic fluid of 36 normal and 12 premature neonates. Total lipids, phospholipids and cholesterol were significantly decreased in the premature patients and the extent of decrease was more pronounced in patients who developed respiratory distress syndrome. On the other hand, inorganic phosphorus content of the amniotic fluid was within the normal range.