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Biomedical subjects

G E Andersen

Publications and source records attributed to G E Andersen.

At least 37 records · Page 2Linked to original sources
PubMed1987

Fatty acid composition of subcutaneous adipose tissue in mother-infant pairs.

The fatty acid composition of microsamples from 10 AGA term, 8 SGA term, 7 AGA preterm and 4 SGA preterm, 2-4 day old infants and their mothers were analyzed. In AGA preterm newborns the mean percent of palmitic and stearic acid was lower and the mean percent of linoleic acid was higher than in AGA term infants indicating that there is an increase in fatty acids derived by synthesis from glucose throughout gestation. SGA infants had relative amounts of palmitic and stearic acid similar to what was found in AGA term infants. This indicates that the enzymes involved in synthesis of fatty acids from glucose are intact in intrauterine growth retardation (IUGR). The absolute amount of adipose tissue and fatty acids, however, is smaller in SGA infants due to a reduced availability of glucose in IUGR gestation. No differences were found in the fatty acid composition of subcutaneous adipose tissue from the mothers in the 4 groups. All mothers had a lower mean percent of palmitic and stearic acid and a higher mean percent of oleic and linoleic acid than their infants, ensuring a transplacental gradient to the fetus of this latter essential fatty acid. The fatty acid composition of plasma free fatty acids generally reflected the composition of the subcutaneous adipose tissue in the infants.

Adipose Tissue↗
PubMed1987

The influence of sampling site and time upon umbilical cord blood acid-base status and PO2 in the newborn infant.

Measurement of umbilical cord blood acid-base status is routinely carried out in many obstetric centers. Umbilical cord blood pH, PO2, PCO2 and SBE (standard base excess) may change between clamping of the cord and analysis due to diffusion and metabolism. It was the aim of this study to evaluate these changes separately in artery and vein blood during storage in the clamped umbilical cord. The umbilical cords from 11 normal term deliveries were clamped immediately after delivery and kept at room temperature. Samples of artery and vein blood were drawned separately 1, 5, 10, 15 and 30 minutes post partum and pH, PO2 and PCO2 were measured and SBE calculated. As demonstrated in table I, the vein blood pH and PO2 values were higher and PCO2 values lower than in the artery blood. The changes over time are given in figure 1 with the 1 min values as points of reference. Changes within the first 15 minutes were modest. A significant fall in vein pH, vein SBE and artery PO2 and a significant rise in artery PCO2 was found. Greater variation in the changes over time was found in artery than in vein blood, being most evident for the 30 min values. Although significant changes in the umbilical cord acid-base values and PO2 do occur when the blood is stored in the clamped cord, we find these changes to be minor and we conclude that sampling can be postponed for up to 15 minutes after delivery.

Acid-Base Equilibrium↗
PubMed1986

Delayed growth and reduced intelligence in 9-17 year old intrauterine growth retarded children compared with their monozygous co-twins.

Fourteen pairs of monozygous twins who differed from one another mainly in terms of intrauterine growth the one being greater than or equal to 25% lighter at birth than the other were studied at a mean age of 13 years. There had been no major problems during pregnancy or the neonatal period and no serious diseases during childhood. The twins grew up in the same environment. At follow-up height, head circumference, global IQ and performance IQ were reduced in the originally light twins. Intrauterine growth retardation of a certain magnitude thus has a long-term deleterious effect upon growth and development.

Adolescent↗
PubMed1985

Changes in plasma lipoproteins from first day to third week of life in healthy breast-fed infants. I. Lipid and protein composition of lipoproteins.

Plasma lipoproteins were measured in seven healthy breast-fed infants three times during the first and on the third, sixth and twenty-first days of life. Plasma total beta-lipoprotein, very low density and low density lipoprotein increased three times during the first week of life. Plasma total apolipoprotein A-I and high density lipoprotein increased twice between the first and third week of life. These dramatic changes in plasma lipoprotein concentrations during the neonatal period can best be explained by the effect of feeding.

Age Factors↗
PubMed1985

Changes in plasma lipoproteins from first day to third week of life in healthy breast-fed infants. II. Fatty acid composition of lipoprotein triglyceride- and cholesterol esters.

The fatty acid composition of plasma lipoprotein-triglyceride (TG) and -cholesterol ester (CE) was studied in seven healthy breast-fed infants three times during the first day and on the third, sixth and twenty-first days of life. The major finding was a two-fold increase in the linoleic acid weight percent of plasma lipoprotein-TG and -CE between the first and third weeks of life. This increase could best be explained by the ingestion of breast-milk rich in linoleic acid.

Age Factors↗
PubMed1984

Continuous intravenous infusion of ampicillin and gentamicin during parenteral nutrition to 36 newborn infants using a dosage schedule.

Ampicillin and gentamicin were given continuously i.v. to 36 newborn infants using a dosage schedule and the results were compared with those obtained in an earlier study including 88 infants who received individually calculated dosages. With the dosage schedule the variation in the serum concentrations of antibiotics was smaller in the same child throughout the treatment course, but greater between the infants. The 95% limits for the serum concentrations of antibiotics were, however, nearly the same in the two treatment groups, and the use of a dosage schedule is therefore recommended. Serum gentamicin concentration should be assayed about 3 half lives (18 hours) after beginning the treatment, and dosage adjustment be made if the serum gentamicin concentration is outside 3-5 micrograms/ml.

Ampicillin↗
PubMed1983

Serum lipids and lipoproteins in 157 insulin dependent diabetic children and adolescents in relation to metabolic regulation, obesity and genetic hyperlipoproteinemia.

Serum lipids and lipoproteins were measured in 157 insulin dependent diabetic children and adolescents (IDDM) and in 350 healthy reference individuals. Serum triglyceride values were lower and total cholesterol and high density lipoprotein cholesterol higher in IDDM. Metabolic regulation reflected by glucosuria, postprandial blood glucose, number of hypoglycemic episodes and hemoglobin A1c all correlated strongly with serum triglyceride and very low density lipoprotein cholesterol. Serum lipids and lipoproteins did not correlate with obesity. Three children had genetic hyperlipoproteinemia. In IDDM measurement of serum lipids and lipoproteins can thus be used to further assess metabolic regulation. Measurement of serum lipids and lipoproteins seems warranted for future evaluation of the risk of cardiovascular disease in IDDM.

Adolescent↗
PubMed1983

Investigation of 89 children born by drug-dependent mothers. I. Neonatal course.

Among 89 infants born by opiate- and methadone-addicted mothers 20% were preterm and 31% were light for gestational age. Mean gestational age and birth weight were lower in infants of mothers who had taken mainly opiates compared with infants of mothers who had taken mainly methadone. Preterm labor was more frequent among women who had been acutely withdrawn on methadone within the last month before birth than among women who were maintained on methadone at birth. 85% of the newborns had withdrawal symptoms and 12% had convulsions the severity of which was not correlated with the type of drug abuse. The duration of withdrawal, however, correlated with the amount of methadone taken by the mother at birth. 20% had signs of perinatal asphyxia and had an increased frequency of neonatal convulsions. These babies represent a special high-risk group of newborns. Prevention, therapy and care demand extraordinary combined efforts by politicians, social welfare personnel, midwives, doctors and nurses.

Adult↗
PubMed1983

Investigation of 89 children born by drug-dependent mothers. II. Follow-up 1-10 years after birth.

72 of 89 children born by opiate- and methadone-addicted mothers were reinvestigated 1 to 10 years after birth. Only 25% were found to by physically, mentally and behaviorally normal. 56% were hyperactive, aggressive, with a lack of concentration and social inhibition. 10% had a severely and 11% a moderately impaired psycho-motor development mainly due to deprivation. 43% of the children had been removed from their mothers by the courts. The average number of shifts from one milieu to another was 6 per child with an upper range of 30 shifts for some of the children. The average number of shifts from one caregiver to another was 5 with an upper range of 11. These findings indicate that there is an urgent need for politicians, social welfare and health personnel to reexamine their roles in helping these children, who will otherwise develop into a new generation of social loosers.

Adult↗
PubMed1982

Metabolic events in infants of diabetic mothers during first 24 hours after birth. I. Changes in plasma glucose, insulin and glucagon.

Changes in plasma glucose, nonantibody-bound insulin and glucagon concentrations were studied in 32 newborn infants of diabetic mothers (IDM) during the first 24 hours after birth. Ten infants were born to White class A mothers and 22 to class B-F mothers. The infants were kept fasting during the investigative period and blood was sampled from an umbilical artery catheter. At birth, plasma glucose and glucagon levels were similar in the class A and B-F infants, whereas nonantibody-bound insulin levels were approximately 15-fold higher in the class B-F infants than in the class A infants (p less than 0.001). After birth, plasma glucose fell in all infants, the nadir being reached at two hours (p less than 0.01). Plasma glucose fell by approximately 35% in the class A infants and 63% in the class B-F infants (p less than 0.01). Eight IDM had asymptomatic hypoglycemia (plasma glucose less than 1.9 mmol/l) and four of these infants had glucose levels below 1.7 mmol/l and were withdrawn from further study. In the remaining four hypoglycemic IDM, plasma glucose was about 1.6-fold higher (p less than 0.01) and insulin about 11-fold higher (p less than 0.001) at birth compared to the 24 normoglycemic IDM. The hypoglycemia was attended by unchanged insulin levels in the class A infants, whereas insulin fell in the class B-F infants (p less than 0.01). However, during the whole investigative period, plasma insulin of the class B-F infants was higher than that of the class A infants (p less than 0.01). After birth, plasma glucagon increased slowly in all IDM and peak values were reached after 12 hours in the class A infants (p less than 0.05) and 24 hours in the class B-F infants (p less than 0.01). Only those infants who became hypoglycemic after birth exhibited a significant increment in plasma glucagon from 0.2 hours (p less than 0.05). These results suggest that neonatal hypoglycemia of IDM results from high plasma levels of nonantibody-bound insulin together with a very retarded increment in plasma glucagon levels. The degree of neonatal hypoglycemia and hyperinsulinemia of an individual IDM seems to be positively correlated to the severity of the diabetes of the mother.

Adult↗