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Biomedical subjects

G Mathé

Publications and source records attributed to G Mathé.

At least 73 records · Page 4Linked to original sources
PubMed1995

Lysosomal exocytosis induced by hyperthermia: a new model of cancer cell death. II. Effect on peritoneal macrophages.

Recently we described the "macrophagic lysosomal exocytosis" (MLE) as a possible new mode of cancer cell death induced by hyperthermia (HT) [1]. In order to confirm this first report, HT was applied at the peritoneum level with perfusional procedure, after catheter insertion under local anesthesia. We evaluated the subcellular changes of peritoneal macrophages in human gastric tumor, before and after hyperthermic treatment at 42 degrees C for 90 minutes. Transmission electron microscopy showed that treatment produced the disappearance of the cytoplasmic granules, with a consequent extracellular scavenger action of the phagocytic cells, the proliferation of some organelles such as mitochondria, endoplasmic reticulum and Golgi complex that may be addressed to a subsequent restoration of the granular pool in the degranulated macrophages. This phenomenon can enhance the already documented effect of hyperthermic perfusional chemotherapy in peritoneal tumors.

Cell Death↗
PubMed1994

In vivo eradication of Friend virus as an experimental HIV-model, by combination of zidovudine, acriflavine and an ellipticine analogue. Possible application to the treatment of human pre-AIDS?

Simultaneous administration of zidovudine, acriflavine and celliptium to Friend virus-injected mice eradicates the virus, as evidenced by the impossibility of the treated-mouse serum, when injected to virgin recipients, to induce spleen foci formation. An adapted preliminary protocol given to patients in whose p 24 antigen was present in the blood, lead to a considerable reduction of that marker. The cures lasted 3 weeks, and were repeated after 3-week intervals. Since p 24 antigen returns to pre-treatment levels at the end of the interval, research should concentrate on the maintenance of the effect during the interval.

AIDS-Related Complex↗
PubMed1994

Changes in the level of blood suppressor CD8+CD57+ lymphocytes, when HIV-1 p24 antigen reappears in the blood.

Using the marker Leu2 + Leu7 + to detect the CD8 suppressor cells (CD88+CD57+), we have observed that their blood level, which increases after primoinfection, during the latent period, increases still further just before and when the p24 antigen returns and is present in the blood. Its ratio over cytotoxic CD8+ cells remains high during the AIDS period, though the absolute number decreases.

Acquired Immunodeficiency Syndrome↗