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Keywords
(11)
Antitumor Activity
Cell Line
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Gene Expression
Immune Response
Induced Nitric Oxide Synthase
Macrophage Activation
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Extract from Calotropis procera latex activates murine macrophages
Extract from Calotropis procera latex activates murine macrophages,10.1007/s11418-009-0335-7,Journal of Natural Medicines,Abdel latif Shaker Seddek,Mo
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Extract from Calotropis procera latex activates murine macrophages
(
Citations: 1
)
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Abdel latif Shaker Seddek
,
Motamed Elsayed Mahmoud
,
Takahiko Shiina
,
Haruko Hirayama
,
Momoe Iwami
,
Seiji Miyazawa
,
Hideki Nikami
,
Tadashi Takewaki
,
Yasutake Shimizu
Calotropis procera latex has long been used in traditional medicines. Extracts from C. procera latex have been reported to have various pharmacological actions, including protection from myocardial infarction, hepatoprotective action, antitumor activity, antinociceptive, and pro- and anti-inflammatory actions. To evaluate the immunomodulatory functions of the water-soluble C. procera extract (CPE), we investigated its ability to activate macrophages—effector cells in inflammatory and immune responses. Intraperitoneal injection of CPE in mice (2 mg/mouse) induced migration of macrophages to the intraperitoneal cavity, confirming the proinflammatory effects of water-soluble CPE. The direct effects of CPE on macrophages were then assessed by measuring the production of
nitric oxide
(NO) as an indicator for macrophage activation. Addition of CPE (1–10 μg/ml) to the
culture medium
of the murine monocyte/macrophage
cell line
RAW264.7 caused an increase in NO production in a time- and dose-dependent manner. CPE-elicited NO production was blocked by application of an inhibitor of inducible
nitric oxide synthase
(iNOS). Expression of iNOS mRNA was induced by treatment of cultured macrophages with CPE. Injection of CPE in mice also resulted in an increase in plasma NO level. The results suggest that CPE activates macrophages and facilitates NO production via up-regulation of iNOS gene expression.
Journal:
Journal of Natural Medicines - J NAT MED
, vol. 63, no. 3, pp. 297-303, 2009
DOI:
10.1007/s11418-009-0335-7
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Citation Context
(1)
...A series of preliminary reports dealing with activities found in plant extracts or within latex have been described (
Seddek et al. 2009
)...
Jefferson S. Oliveira
,
et al.
In vivo growth inhibition of sarcoma 180 by latex proteins from Calotr...
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Citations
(1)
In vivo growth inhibition of sarcoma 180 by latex proteins from Calotropis procera
(
Citations: 2
)
Jefferson S. Oliveira
,
Letícia V. Costa-Lotufo
,
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