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Biomedical subjects

L I Hardell

Publications and source records attributed to L I Hardell.

At least 19 recordsLinked to original sources
PubMed1989

Food and nutrient intakes in Swedish diabetic children.

Food and energy intakes in diabetic children, 7-9 and 12-14 years of age, were studied by the 7-d record method. The mean duration of diabetes in the younger group was 3.0 years and in the older group 4.2. The children had 3 main meals and 3.4 light meals daily. The median daily number of sandwiches was 7, often offered as snacks. All children used a low-fat margarine, low-fat cheese and low-fat milk. Sweets and diabetic food were seldom used. Of the energy intake protein contributed 18 per cent, fat 32 per cent and carbohydrates 50 per cent, including sucrose 2 per cent. Mean daily intake of fibre was 20 g. Compared to healthy children of the same age and from the same areas of Sweden the diabetics had a more regular meal pattern, their energy intakes did not differ, but the diet of diabetics was lower in fat and sucrose and higher in protein. The mean height, weight and BMI did not differ from healthy children.

Adolescent↗
PubMed1984

Hypoparathyroidism and liver disease--evidence for a vitamin D hydroxylation defect. A case report.

The case history of a 4 year old girl with primary hypoparathyroidism is reported. Treatment with oral 1 alpha-hydroxyvitamin D3 did not result in normal calcium and phosphate levels, whereas treatment with oral 1 alpha,25-dihydroxyvitamin D3 did. During the treatment period, the patient developed signs of severe liver disease and died in a picture of increased intracranial pressure. Post-mortem examination revealed a giant cell hepatitis and severe cirrhosis. The clinical course is consistent with a liver vitamin D3 hydroxylation defect.

Calcitriol↗
PubMed1984

Amino acids labelled with 11C as indicator of the effect of dietary treatment of hyperammonaemia.

Short-lived radioactive carbon, 11C, (T 1/2 = 20 min) was incorporated into an essential amino acid [11C-methyl] -L-methionine, to form a true biological amino acid tracer with external detectability. This was tested in a study of the physiological tracer dynamics in a hyperammonaemic patient before and after a change in the dietary treatment. The protein intake was unchanged between the two investigations but the energy intake was increased from 53 to 63 kcal/kg BW/day. The tracer radioactivity was given per os. In the second investigation a relative decrease of radioactivity in the low molecular weight fraction of blood plasma was seen. Also the external measurements indicated a higher hepatic retention of radioactivity in the second investigation but no increased excretion of tracer. This may reflect an increased ability of the liver to utilize the incoming methionine from the vena porta. The hyperammonaemia remained over the second investigation but seven months later the ammonia content in the blood was almost normalized and the patient had also gained 3 kg in weight. The correlation between changes in tracer dynamics and changes in therapeutical effect of the diet is not further verified in this experiment but the investigation indicates the value of further studies in this topic using 11C-labelled amino acids also including the use of the newly introduced positron tomographic technique. It may be possible to develop this type of nuclide technique further to achieve a clinically useful method of optimizing therapeutic regiments in this type of metabolic disease.

Amino Acid Metabolism, Inborn Errors↗
PubMed1983

Surgical implications of congenital chloride diarrhoea.

Congenital chloride diarrhoea (CCD) is an inherited inborn error of metabolism. Hydramnios, premature birth, no passage of meconium and a distended abdomen are the typical features of this disease in the neonate. Loss of Cl- from the intestines leads to urine-like diarrhoea, severe dehydration and alkalosis. Without treatment the mortality rate is high. The abdominal distension may erroneously be ascribed to an intestinal obstruction and thereby lead to unnecessary operations and delay of adequate treatment. There is an overrepresentation of intestinal volvulus in reported cases. Three of the five cases of CCD seen at our departments exemplify these surgical implications.

Chlorides↗
PubMed1983

The effects of diet and zinc treatment on the fatty acid composition of serum lipids and adipose tissue and on serum lipoproteins in two adolescent patients with acrodermatitis enteropathica.

In two adolescent patients with acrodermatitis enteropathica fatty acid spectra in serum lipids and adipose tissue and serum lipoprotein concentrations were followed for about 7 yr. One patient was treated by diet and iv infusions of high amounts of linoleic acid and later by different doses of zinc. The other boy was given only varying doses of zinc. Extra supply of linoleic acid raised its concentrations in serum triglycerides, cholesterol esters, phospholipids, and adipose tissue lipids from low to normal or high levels. In both patients linoleic acid in serum lipids was sensible to the dose of zinc, decreasing when it was low and increasing when it was high. Serum triglycerides increased when the supply was low and was normalized when high doses were given. High-density lipoprotein cholesterol, however, remained low throughout the study. We conclude that in acrodermatitis enteropathica zinc thus seems to be of importance in regulating linoleic acid and serum lipoprotein metabolism.

Acrodermatitis↗
PubMed1983

Fluoride in human milk.

Reported contents of fluoride (F) in human milk vary considerably. The aim of this study was to determine the F content in human milk under different levels of F intake using a siliconfacilitated microdiffusion technique, which had a good accuracy and precision. The mean F concentration of colostrum from mothers in a 1.0 ppm and a 0.2 ppm F area was 0.36 +/- 0.02 mumol/l (+/- SEM) and 0.28 +/- 0.02 mumol/l, respectively. The mean F concentration of mature milk from a 1.0 ppm F area was 0.37 +/- 0.04 mumol/l. Within the 1.0 ppm F area, the intra- and interindividual differences in F concentration were very small. No statistically significant difference in milk F concentration between the two areas was found. Consequently, breastfed infants living in a 1 ppm or a 0.2 ppm F area will have an approximately equal F intake of 5-10 micrograms per day, in spite of great differences in F intake among the nursing mothers.

Circadian Rhythm↗
PubMed1981

Fatty acid composition of human breast milk. Changes during the first week after delivery.

Breast milk was collected daily from 11 healthy Polish mothers during the first week after delivery. The method of Folch was found suitable for fat extraction from breast milk. The concentration of total fat and of triglycerides and the fatty acid composition of total fat were determined. The concentration of total fat was 2.4 g/100 ml on the second day after delivery and 4.4 g/100 ml on the seventh day. There was a similar rise in the triglyceride concentration. No relation was found between the concentration of total fat and the relative concentrations of fatty acids. The major fatty acids were 18:1 and 16:0, which comprised about 70 per cent of the fatty acids. The essential fatty acids comprised about 10 per cent of the total fatty acids. The fatty acid spectrum changed during the sampling period. The proportions of 10:0, 12:0, 14:0 and 16:1 increased, those of 16:0, 18:2, 20:0 and 22:0 were unchanged, and those of 18:0 and 20:4 decreased. Very long-chained polyunsaturated fatty acids, e.g. 22:6, were also present. All the polyenoic acids - except 18:2 showed the highest concentrations on the first day after delivery.

Adult↗
PubMed1979

A prospective study of urinary proteins in early infancy.

Urinary concentrations of protein, albumin, beta 2-microglobulin, alpha-amino nitrogen, and creatinine were determined in forty-one full-term infants on seven occasions up to six months of age. Except for beta 2-microglobulin the concentrations were highest on the first day, followed by a rapid decrease to a constant level within two weeks. Protein diminished approximately seven-fold, albumin twenty-fold, alpha-amino nitrogen three-fold and creatinine five-fold. By contrast, beta 2-microglobulin, a low molecular weight protein, first increased three-fold between day 1 and day 5, thereafter decreasing slowly 17-fold during the first three months of age. The data indicate that different kidney functions mature asynchronously.

Age Factors↗
PubMed1978

Concentration and composition of human serum lipoproteins at birth.

By ultracentrifugation of sera from 69 cord bloods very low (VLDL), low (LDL) and high density lipoproteins (HDL) were obtained and analysed for triglycerides (TG) and cholesterol (CHOL). Electrophoresis in agarose gel was performed on serum, VLDL and LDL + HDL. VLDL lipids were present in all newborns. VLDL contained 30 and 5% of serum TG and CHOL. The range of TG in VLDL was wide (0.02-0.62 mmol/l), but there was a constant ratio between TG and CHOL. The electrophoretic mobility of VLDL was slower than in adults. LDL contained 50% of both serum TG and CHOL, and HDL contained 15 and 50% of these serum lipids. A published formula for calculating CHOL in VLDL and LDL from serum CHOL and TG and CHOL in HDL gave values for CHOL in LDL which corresponded well with the determined values. For VLDL, however, the calculated values were too high.

Cholesterol↗
PubMed1977

Sex differences in serum lipids and lipoproteins at birth.

In a study of 1426 males and 1391 females at birth the mean concentrations of cholesterol in total serum, in the sum of very low density and low density lipoproteins and in high density lipoprotein were significantly higher in females than in males. No sex difference was present in the concentration of triglycerides either in total serum or in the lipoprotein fractions.

Cholesterol↗
PubMed1975

Familial, isolated, complete right bundle-branch block.

An electrocardiographic study of the families of two children with isolated complete right bundle-branch block is presented. Several cases of classical complete right bundle-branch block were disclosed (17/69 and 3/22 respectively) in three generations of the two families. Personal interviews and parish registers showed that the two families were related, being descendants 8 generations back from a glass-blower who has emigrated to Sweden in the eighteenth century. It is concluded that complete right bundle-branch block can be an autosomal, genetic anomaly which is inherited dominantly but with reduced penetrance and/or expressivity.

Adolescent↗