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Biomedical subjects

I F Larsen

Publications and source records attributed to I F Larsen.

10 recordsLinked to original sources

[Thyroid dysfunction and thyroid antibodies in a population group over the age of 70. A prevalence study from Oslo and Naeröy].

The prevalence of thyroid dysfunction and thyroid antibodies was investigated in a small rural community (Naerøy) and in Oslo. Attendance rates in Naerøy and Oslo were 99 and 71%, respectively. The prevalence of undiagnosed latent hypothyroidism and primary hypothyroidism was 4.0 and 5.3% in women in Oslo and Naerøy respectively and 0 and 3.5% in men. Undiagnosed hyperthyroidism was detected in 1.2% of men in Naerøy and in 1% of women in Oslo. Antibody to the thyroid microsomal antigen in titre greater than or equal to 400 was detected in 10.2 and 17.5% of women and 7.3 and 7.2% of men in Oslo and Naerøy, respectively. Among women with antibody to the thyroid microsomal antigen in both Oslo and Naerøy, and among men in Naerøy, the prevalence of past or present thyroid dysfunction was increased.

Age Factors

Familial syndrome of progressive cone dystrophy, degenerative liver disease, and endocrine dysfunction. III. Genetic studies.

A syndrome of progressive cone dystrophy, endocrine dysfunctions and degenerative liver diseases has been observed in seven patients, six of whom belonged to one extensive kindred. Genetic analyses revealed a segregation ratio indicating autosomal recessive inheritance of the syndrome, and the kindred from which six of the seven patients originated was heavily inbred. Thus, the results of the segregation analyses as well as of the inbreeding analyses provide evidence that this previously unrecognized disorder is inherited as an autosomal recessive trait. Genetic marker analyses were conducted with respect to 22 marker systems, and linkage information was obtained with respect to 15 of them. No strong suggestion of linkage emerged from the analyses, but very close linkage could be excluded for several of genetic marker systems. Pedigree analysis was helpful in establishing the spectrum of clinical manifestations belonging to the syndrome proper. The data presently available suggest that elevated levels of creatine phosphokinase, which were found in all patients, may be useful in tracing heterozygotes for this disorder. This possibility will be further examined.

Abnormalities, Multiple

A familial syndrome of progressive cone dystrophy, degenerative liver disease, endocrine dysfunction and hearing defect. I. Ophthalmological findings.

Seven patients, 6 females and one male, with progressive cone dystrophy are reported. One patient developed amaurosis in one eye and fere amaurosis in the other. The least affected patient (13 years of age) had fairly good central cone vision, but a rod response only outside the central area. Attenuated retinal vessels, disc pallor and general atrophic appearance without pigmentation were typical findings. Six of the patients originated from 2 sibships. Increasing impairment of vision during pregnancy was seen in two patients. Pathological glucose tolerance, diabetes, liver disease, endocrinological disturbances, and hearing defects were recorded. Thus, this cone dystrophy appears to be part of a disease affecting several organs. The familial occurrence suggests that this disorder is inherited.

Adult