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Biomedical subjects

A Mágori

Publications and source records attributed to A Mágori.

23 records · Page 2Linked to original sources
PubMed1977

[Ultrathin sections in postmortem morphological diagnosis of kidney diseases].

Authors for the light-microscopic examination of various--mainly glomerular--diseases of kidneys in addition to paraffin section have used also ultrathin sections (0,5 mu). Material was fixed in buffered-formalin solution and embedded in metacrylate or Durcupan ACM. Sections obtained by this method can be studied by electron micro-scope as well. Sections were stained with methylene-blue and basicfuchsine, further with periodic-acid silver methenamine. The use of ultrathin sections for the light-microscopic studies can not replace the study of paraffin-sections. Ultrathin sections are suitable for the detection of fine details. They can be studied by light- and electron microscopy as well.

Autopsy↗
PubMed1976

Parenchymal destruction and arterial changes (haemodialysis intimal fibrosis) of glomerulonephritic kidneys in chronic intermittent haemodialysis.

The kidneys of 13 chronic diffuse glomerulonephritis patients who had been subjected to chronic intermittent haemodialysis were compared with those of 6 patients treated in the conservative way. Their renal parenchyma was examined with a semiquantitative histological method and advanced complete destruction of the glomeruli was demonstrated in the dialysed cases. There was no perceptive difference in the distribution of the various grades of damage of the recognizable glomeruli and tubules. With the exception of the chronic lobular glomerulonephritis cases, a marked obliterative mucoid intimal proliferation ("haemodialysis-intimal-fibrosis") had developed in the dialysed glomerulonephritis patients. It affected the renal arteries of all size from the segmental to the interlobular arties. Haemodialysis-intimal-fibrosis did not develop in the additionally examined 13 dialysed chronic pyelonephritis cases nor in 8 such treated conservatively. The change seems to be characteristic, but not specific, for chronic diffuse glomerulonephritis treated by chronic intermittent haemodialysis.

Adolescent↗
PubMedDate not supplied

Concretions in renal basement membranes.

A study of 196 renal biopsies was carried out by electron microscopy. In 78 cases concretions were detected, which x-ray microanalysis (EDAX) proved to be calcium phosphate deposits. Concretions always occurred in damaged basement membranes, especially in the basement membranes of Bowman's capsules and of proximal convoluted tubules. They were frequently also found in sclerotic foci. Both nephrotic syndrome (through hypercholesterolaemia) and progressive sclerotic processes seem to play a role in the pathogenesis of concretion formation. Concretions are considered to represent early dystrophic calcification.

Basement Membrane↗
PubMedDate not supplied

Drug resistance and sensitivity of germ cell testicular tumors: evaluation of clinical relevance of MDR1/Pgp, p53, and metallothionein (MT) proteins.

BACKGROUND: Although in vitro and clinical studies indicate that overexpression of P-glycoprotein (Pgp), p53, or metallothionein (MT) is involved in modulating drug resistance/sensitivity of cancer cells, the clinical relevance of the overexpression remains to be elucidated. MATERIALS AND METHODS: In this paper the expression and clinical value of Pgp, p53, and MT were evaluated immunohistochemically in 77 specimens of germ cell testicular tumors (GCT). We also studied the interrelationship(s) between the investigated markers. RESULTS: Pgp positivity correlated with cancers of advanced stages (P = 0.000). p53 and MT immunostaining does not predict a poor response to chemotherapy, but rather is correlated to a favorable clinical outcome (P = 0.001, P = 0.00006 respectively). We obtained an inverse association between Pgp and p53 (P = 0.0005), and positive strong association between p53 and MT immunoreactivity (P = 0.0002). CONCLUSIONS: Based on our results in patients with germ cell testicular tumors we assume that the poor clinical outcome seen in certain Pgp positive tumors is the consequence of Pgp association with a more progressive malignant phenotype, rather than its role in multidrug resistance (MDR). p53 and MT immunoreactivity predicts a better response rate to chemotherapy, wheres tumors lacking or demonstrating low MT and or p53 expression show a worse prognosis.

ATP Binding Cassette Transporter, Subfamily B, Mem↗