The effect of a Titanocene Dichloride derivative, Ti IV (C5H5)(2) NCS(2), on the haematopoietic response of Ehrlich tumour-bearing mice.

Full Abstract

The effects of the [Ti IV (C(5)H(5))(2) NCS(2)] metallocene (BCDT), a Titanocene Dichloride derivative, on the growth and differentiation of granulocyte-macrophage progenitor cells [colony-forming unit-granulocyte-macrophage (CFU-GM)] and bone marrow cellularity in normal and Ehrlich ascites tumour-bearing mice were studied. As expected for the Ehrlich ascites tumour-model, concomitant myelosuppression, increased number of spleen CFU-GM and changes in bone marrow cellularity were observed. The treatment of Ehrlich ascites tumour-bearing mice with BCDT (10-30 mg/kg/day) produced a dose-dependent increase in myelopoiesis, a reduction in splenic colonies and a restoration in the total and differential marrow cell counts. We also observed an increase in CFU-GM number when bone marrow cells obtained from normal mice were incubated in vitro with serum from normal mice treated with BCDT. In addition, BCDT prolonged, in a dose-dependent manner, the survival of mice inoculated with Ehrlich ascites tumour. Although it has been previously reported that substitutions in the two halides of the titanocene do not interfere with antitumoural effect, our results with BCDT demonstrated a reduction in antitumour efficacy when compared to previous results with the original titanocene produced in our laboratory.

Author information

Author/s: Valadares, Marize C (MC); Queiroz, Mary L S (ML);

Affiliation: Departamento de Farmacologia/Hemocentro, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), P.O. Box 6111, CEP 13083-970, SP, Campinas, Brazil.

Journal and publication information

Publication Type: Journal Article

Journal: European journal of pharmacology (Eur J Pharmacol), published in Netherlands. (Language: eng)

Reference: 2002-Mar; vol 439 (issue 1-3) : pp 35-42

Dates: Created 2002/04/08; Completed 2002/08/08; Revised 2003/11/14;

PMID: 11937090, status: MEDLINE (last retrieval date: 2/18/2009, IMS Date: )

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Animals
Antineoplastic Agents - pharmacology
Bone Marrow Cells - drug effects
Carcinoma, Ehrlich Tumor - blood; drug therapy; pathology
Colony-Forming Units Assay
Dose-Response Relationship, Drug
Hematopoietic Stem Cells - drug effects

Hematopoietic Stem Cells - drug effects
Male
Mice
Mice, Inbred BALB C
Organometallic Compounds - chemistry; pharmacology
Spleen - cytology; drug effects
Survival Analysis

Associated Chemicals: Antineoplastic Agents (0) ; Organometallic Compounds (0) ; bis-cyclopentadienylditiocianatetitanium IV (0) ; titanocene dichloride (1271-19-8)

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