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Biomedical subjects

J Hanson

Publications and source records attributed to J Hanson.

At least 253 records · Page 14Linked to original sources
PubMed1977

Contractile and histochemical properties of the inferior oblique muscle in the rat and in the cat.

Mechanical and histochemical properties of inferior oblique muscles(IO) were compared in adult albino rat and pigmented cat. The twitch contraction times and the fusion frequencies were about the same in both species indicating similar contractile properties of the fast contracting fibers. Rat IO seemed to contain fewer slowly contracting fibers than cat IO; half-decay time of the twitch was shorter in rat than in cat muscles and fusion started at higher stimulus frequencies. Fatique resistance was lower in rat than in rat than in cat. Post-tetanic potentiation occurred in the cat but not in the rat IO. Almost all fibers of rat IO were rich in myofibrillar ATPase. In cat IO most fibers showed high myofibrillar ATPase activity, but some fibers in the global layer had moderate to small amounts of this enzyme. This correlates well with the physiological differencies between cat and rat IO.

Adenosine Triphosphatases↗
PubMed1976

Association of D/D translocations with fetal wastage and aneuploidy. A report of four families.

Four families are described with a t(13q14q) segregating. Two of them were identified through index cases with Down's syndrome; their karotypes revealed the unusual 46,XY, -13, -14, +t(13q14q), +21. The other two families were identified through a chromosomal study of parents with repeated spontaneous abortions. Analysis of data on 3 of these 4 families and on 7 other from the published reports showed no evidence of increased fetal wastage among 13/14 carriers. However, the risk of producing offspring with various types of aneuploidy may be greater among carriers than among persons with a normal chromosome pattern. Qualitative and quantitative differences in D/D translocations may account for the observed variation in clinical findings. These differences add to the problem of determining genetic risks from an analysis of grouped data.

Adult↗
PubMed1976

[Moebius syndrome].

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Abnormalities, Multiple↗
PubMed1975

Schirmer test of lacrimation. Its clinical importance.

Lacrimation was tested by a modified Schrimer test, ie, by the soaking of strips of filter paper hooked into th lower conjunctival sac. The test is advocated for the topical diagnosis of facial-nerve lesions. Lacrimation was found to be independent of age and sex. There were, however, large inter- and intra-subject variations. Nevertheless, the difference between the two eyes of a given healthy person was much less than that between the eyes of two different persons, making the test clinically useful. In a given patient, a bilateral difference may be assumed to be significant when the lesser value does not exceed 27% of the larger one. Such a test result is indicative of a supraganglionic facial-nerve lesion.

Adolescent↗
PubMed1975

Size of the intracerebral ventricles as measured with computer tomography, encephalography and echoventriculography.

Ventricular size in a total of 192 patients was determined with computer tomography (CT), encephalography (Enc) and echoventriculography (echo-VG). There was good correlation (greater than or equal to 0.80) between the values for the size of the lateral ventricles obtained with all three methods. Correlation between values for the width of the third ventricle: CT/Enc and CT/echo-VG: poor; Enc/echo-VG: good ( = 0.85). Both at computed tomography and encephalography there was poor correlation between anterior horn index and the width of the third ventricle.

Adolescent↗