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Neutral proteinase inhibitors and antimetastatic effects in mice

Identifieur interne : 003816 ( Main/Exploration ); précédent : 003815; suivant : 003817

Neutral proteinase inhibitors and antimetastatic effects in mice

Auteurs : T. Giraldi [Italie] ; G. Sava [Italie] ; M. Kopitar [Slovénie] ; J. Brzin [Slovénie] ; V. Turk [Slovénie]

Source :

RBID : ISTEX:E2B9DC07377FF0DDCE500637B7E6BB5300BA38B6

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Abstract

Abstract: The effects of a series of neutral proteinase inhibitors have been examined in mice bearing Lewis lung carcinoma. The substances tested are three non-steroidal anti-inflammatory agents (chloroquine, indomethacin and phenylbutazone), a broad spectrum non-specific enzyme inhibitor (aurintricarboxylic acid), and two intracellular inhibitors prepared from bovine spleen (SNPIs). All of these substances significantly reduced the formation of spontaneous pulmonary metastases. Primary lumor growth was unrelated with depression of metastasis formation, and a significant inhibition was caused by chloroquine and indomethacin only. These findings are consistent with previously reported inhibitory effects of non-steroidal anti-inflammatory agents on tumor development in animals, and indicate that, in addition to the suggested mechanisms, proteinase inhibition might be involved. They also support our previous observations on the antimetastatic effects caused in mice by neutral proteinase inhibitors.

Url:
DOI: 10.1016/0014-2964(80)90224-8


Affiliations:


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Le document en format XML

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<term>Aurintricarboxylic Acid (therapeutic use)</term>
<term>Chloroquine (therapeutic use)</term>
<term>Indomethacin (therapeutic use)</term>
<term>Lung Neoplasms (secondary)</term>
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<term>Neutral proteinase inhibitors</term>
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<div type="abstract" xml:lang="en">Abstract: The effects of a series of neutral proteinase inhibitors have been examined in mice bearing Lewis lung carcinoma. The substances tested are three non-steroidal anti-inflammatory agents (chloroquine, indomethacin and phenylbutazone), a broad spectrum non-specific enzyme inhibitor (aurintricarboxylic acid), and two intracellular inhibitors prepared from bovine spleen (SNPIs). All of these substances significantly reduced the formation of spontaneous pulmonary metastases. Primary lumor growth was unrelated with depression of metastasis formation, and a significant inhibition was caused by chloroquine and indomethacin only. These findings are consistent with previously reported inhibitory effects of non-steroidal anti-inflammatory agents on tumor development in animals, and indicate that, in addition to the suggested mechanisms, proteinase inhibition might be involved. They also support our previous observations on the antimetastatic effects caused in mice by neutral proteinase inhibitors.</div>
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