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Biomedical subjects

F Becker

Publications and source records attributed to F Becker.

At least 145 records · Page 8Linked to original sources
PubMed1982

[The value of the Planiol and Pourcelot resistance index in the common carotid artery in narrow stenosis at the origin of the internal carotid artery].

Together with others, the author notes that the common carotid resistance index defined by Planiol and Pourcelot has no significant value in assessing the degree of a possible distal stenosis affecting the internal carotid. Using two cases similar in terms of anatomical lesions (the intracranial internal carotid being considered to be healthy), the author suggests the classification of two types of tight stenosis of the origin of the internal carotid according to whether the Planiol and Pourcelot index is raised or abnormally normal or even low:--tight stenosis of the origin of the internal carotid situated on a functional carotid system, with normal index of resistance for the common carotid;--tight stenosis of the origin of the internal carotid situated on a carotid system in the process of exclusion, with high index of resistance for the common carotid. The author feels that the possibilities of adaptation of the microcirculation and possible collateral circulations may underly these findings.

Aged↗
PubMed1981

[An automatic apparatus for external measurement of blood pressure. Preliminary study in patients with arteriopathies of the lower limbs (author's transl)].

An automatic measuring apparatus for recording blood pressure employing oscillometry was used to measure mean and elastic systolic and diastolic perfusion pressures in the ankles of arteritic patients. The reliability of the method was tested in 100 cases. Correlations with reference pressures measured by non-invasive techniques (ultrasonographic and plethysmographic) were good. The reliability and reproducibility of the apparatus employed (Dinamap) were in conformity with the desired maximum error (less than 15%). It is hoped that this method will allow improved evaluation of lower limb circulation, and the definition of a sliding scale of the indices of mean and elastic systolic and diastolic pressures. The major cause of error appears to be lack of pulsation in the leg arteries.

Arteritis↗
PubMed1979

[Problems and risks of functional treatment of hip joint dysplasia in early infancy (author's transl)].

Initial difficulties arise already in diagnostic stage. We cannot say whether a hip will spontaneously develop into a normal one. Hence, we must treat all children showing signs of dysplasia, and we must be willing to accept being accused of polypragmasis. There is also a certain, albeit slight, risk of disturbing the development of the femoral head. The must be strictly avoided by exercising greater possible care with regard to surgical technique and follow-up control. It is precisely the apparent simplicity of the method which presents a major difficulty. The article goes into the details of the method. Prevention in early infancy is the only possibility of checking the disease in all its stages.

Age Factors↗
PubMed1978

Changes in liver and L-cell plasma membranes during infection with Coxiella burnetii.

Changes in plasma membrane proteins of guinea pig liver and L-929 cells were studied during infection with Coxiella burnetii. Polypeptide species resolved by disc polyacrylamide gel electrophoresis with sodium dodecyl sulfate showed quantitative but no qualitative differences between uninfected and infected samples. When the O'Farrell technique of isoelectric focusing, followed by sodium dodecyl sulfate-slab gel polyacrylamide gel electrophoresis, was employed, additional polypeptides were resolved. Livers and L cells were labeled with [3H]-glucosamine. Infected livers incorporated less [3H]glucosamine in the membrane proteins than uninfected material, presumably indicating lower glycoprotein levels. Infected L-cell membranes incorporated greater amounts of [3H]glucosamine, and also were labeled to a greater extent than uninfected membranes, employing the [125I]lactoperoxidase technique. Uninfected L cells showed a greater agglutinability with concanavalin A than did infected cells. Infected livers had much greater levels of cyclic adenosine 3',5'-monophosphate. The data indicate changes in plasma membranes as a result of infection. Possible physiological consequences of membrane changes are discussed.

Adenosine Triphosphatases↗