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Biomedical subjects

A Coune

Publications and source records attributed to A Coune.

45 records · Page 3Linked to original sources
PubMedDate not supplied

Liposomes as drug delivery system in the treatment of infectious diseases. Potential applications and clinical experience.

Liposomes are microscopic, closed lipid vesicles able to entrap hydrophilic as well as lipophilic compounds. They constitute a versatile drug delivery system. When injected by the intravenous route, liposomes are taken up by macrophages in the liver and in the spleen. Investigation of several animal models of infections has shown that liposome-entrapped anti-infectious drugs are active against infections due to facultative intracellular bacteria, parasites such as Leishmania, viruses such as the one causing Rift valley fever. Liposomes of different lipid compositions, structures and sizes were used for intravenous administration of anti-infectious drugs without inducing toxicity in the tested animals. Clinical experience was obtained with two different liposomal preparations of amphotericin B in the treatment of systemic fungal diseases in cancer patients; these preparations were shown to be effective and very well-tolerated.

Animals↗
PubMedDate not supplied

Clinical trial of 2-bromo-alpha-ergocryptine (NSC-169774) in human prostatic cancer.

An EORTC type I clinical trial of 2-bromo-alpha ergocryptine was performed in patients with prostatic carcinoma in clinical stages III and IV. Evaluating rules of response to the therapy were based on objective criteria. The maximum period of followup was 16 weeks. No objective remissions were observed in 24 patients, and in 13 of these patients, evidence of progression of the disease was apparent during the first 8 weeks of drug administration.

Aged↗
PubMedDate not supplied

Unusual behaviour of the LNCaP prostate tumour xenografted in nude mice.

The tumourigenicity of the LNCaP prostatic cell line was investigated in vivo after prostatic (orthotopic), subcutaneous (ectopic) and concomitant implantations in male Balb/c nude mice. Swollen lymph nodes were detected in the inguinal region only after subcutaneous implantation but could not be characterized by immunohistochemistry. However, when grafted to Endoxan-pretreated mice, they generated well differentiated tumours which secreted prostate-specific acid phosphatase. A parallel study was conducted to investigate the metastatic potential of the LNCaP tumour using several routes of implantation (intravenous, bone contact, intrasplenic and intracranial). Tumours grew only after intracranial implantation. No production of either haematogenous or bony metastases was recorded.

Acid Phosphatase↗