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Biomedical subjects

C Kemmer

Publications and source records attributed to C Kemmer.

At least 55 records · Page 3Linked to original sources
PubMed1977

[Ultrastructural results in liver biopsies of patients with hyperlipoproteinaemia (author's transl)].

Electron microscopic investigations were performed on liver biopsies of 24 patients with endogenous hyperlipoproteinaemia (HLP) of the types IIa--V, classified by lipid- and lipoprotein-fractions, as to Frederickson et al. (4), as well as on biopsy specimens of 6 control persons without histological alterations, and on 7 biopsies with staetosis hepatis. In type IIa we found a typical proliferation of the smooth endoplasmic reticulum and a slight alteration of the mitochondria. Types IIb--V are characterized by increasing fatty degeneration of the liver cells as well as by quantitative and qualitative alteration of the endoplasmic reticulum and the Golgi areas. Giant mitochondria, organelles with atypical membrane structures and paracrystalline matrix inclusions occur more frequently, especially in patients with additional diabetes mellitus. There are scarcely differences between steatosis hepatis without HLP and steatosis with combined HLP, resp., except the more distinct alterations of mitochondria, endoplasmic reticulum, and Golgi areas in the latter. The morphological changes are especially restricted to those liver cell structures, involved in the metabolic disregulation.

Adult↗
PubMed1976

Specificity of human antibodies to intracytoplasmic type-A particles of the murine mammary tumor virus.

Large-scale studies showed that antibodies previously detectable in women with proliferating mastopathy or breast cancer were directed to intracytoplasmic type-A particles (iAp) of mouse mammary tumor virus. Immunofluorescence revealed the human antibodies to be bound only by those tumors producing a certain amount of iAp clusters visible by light microscopy. The intensity of the reaction corresponded to the iAp content of every tumor tested as revealed by electron microscopy and rabbit antisera to iAp. The fluorescence patterns obtained with positive human sera were similar to those obtained with rabbit antisera specific for iAp and resembled the tissue distribution patterns of iAp inclusions stained by acid fuchsin. The reaction with human sera was entirely blocked by rabbit antisera to iAp and, less so, by rabbit or mouse antisera to B particles. The human antibody activity was exhaustively absorbed by purified iAp or purified and disrupted B particles, which indicated that the human antibodies were directed to antigenic components shared by iAp and B particles. Preliminary immunoperoxidase studies supported the assumption that the human antibodies were bound to the iAp membrane; technical details might have accounted for the finding that the human antibodies reacted with the iAp but not with B particles in situ.

Antibodies, Neoplasm↗
PubMed1976

[Amyotrophic lateral sclerosis with myoclonic bodies (Lafora bodies) (author's transl)].

In the present investigation 2 sporadic cases of amyotrophic lateral sclerosis with the occurrence of myoclonic bodies (Lafora bodies) in the CNS are reported. The patients died after about 14 respectively 8 months lasting disease at the age of 41 and 43, respectively under the clinical signs of an ALS. Morphology, staining qualities, and the distribution of the myoclonic bodies in our cases correspond to the adult form of the myoclonic body disease (type Lundborg). In the literature we found further 6 cases of neurogenic muscle atrophy with the occurrence of myoclonic bodies in the CNS so that one might suppose a syntropy of these two affections. The possible pathophysiological relations of neurogenic muscle atrophy to the occurrence of myoclonic body disease in adults are briefly discussed.

Adult↗
PubMed1976

[Pathogenesis of osteopathy caused by anticonvulsives (author's transl)].

After a short survey of the recent suggestions of the pathogenesis of osteopathy caused by therapy with anticonvulsives it is demonstrated in the light of 3 case reports that 1. A vitamin D-sensible rickets, which is only due to abnormal living conditions, can develop in severely cerebral-damaged persons if there is no specific vitamin D administration. 2. An "antiepileptic rickets" is spontaneously reversible if the anticonvulsive therapy is stopped. 3. An enzymatic induction due to anticonvulsives is also detectable in the light of morphologic hepatic changes (biopsy, electron microscopy). Hence it follows that there are demands for a specific control of all patients treated with anticonvulsives. It is recommended to carry out a rickets prevention for a selected patient group.

Anticonvulsants↗
PubMed1975

[Comparative light and electron microscopic study on liver cell inclusions in chronic alcoholic liver damage (author's transl)].

Liver cell inclusions in chronic alcoholic liver damage observed by means of the ligth microscope proved by correlated electron microscopy to be bile depositions, autophagic vacuoles, megamitochondria, alcoholic hyalin or accumulation of ribosomes. These liver cell inclusions are usually identifiable at the light microscopical level. The bile depositions undergo a lysosomal degradation. Thereby, they are converted into a pale brownish pigment and lose the property of reacting with histochemical bile tests. Owing to this brownish pigmentation bile depositions are distinguishable from the other mentioned liver cell inclusions under the light microscope. Autophagic vacuoles appear as eosinophilic inclusions and are PAS positive before as well as after the diastase treatment. On the contrary to these, the likewise eosinophilic megamitochondria are PAS negative, in the same way as alcoholic hyaline. With the procedure according to Goldner megamitochondria mostly strain red, whereas alcoholic hyalin lacks this property. Moreover, alcoholic hyalin is usually distinguishable from megamitochondria by its shape. Accumulations of ribosomes represent basophilic cytoplasm areas in light microscopy and are frequently located in he pericanalicular regions of liver epithelium.

Alcoholism↗
PubMed1974

[Correlation between the production of mature mammary tumour virus particles and the histomorphological differentiation of murine mammary tumours].

The mammary tumour virus (MTV) contents of mammary tumours (MT's) of various mouse strains were investigated by means of the indirect immunofluorescence technique and the electron microscopy. Only in acinus-forming, well differentiated MT's MTV-B particles could be observed in high quantity. The release of B particles seems to be correlated with the degree of structural ripeness of the tumor tissue. As to intracytoplasmic A particles such a strong relationship could not be found out. Many A particles were seen in mature adenocarcinomas as well as in acinus-free tumours. Some mammary carcinomas of an extreme low degree of histomorphological differentiation were free of any detectable virus production. The indirect immunofluorescence test was confirmed as a sensitive method for the detection of MTV antigens in MT slices. Using polyvalent anti-MTV sera, obtained after immunization of rabbits with ether-disrupted B particles from tumour tissue or milk, the test system allowed the distinction of A and B particle antigens. Accumulations of B particles were seen as an intercellular fluorescence reaction while clusters of A particles were represented by a granular paranuclear reaction within the tumor cells.

Adenocarcinoma↗