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Depression: 21st Century Solutions + The Dark Side of Wheat

Abstract Title:

Inhibitory effect of vitamin C in combination with vitamin K3 on tumor growth and metastasis of Lewis lung carcinoma xenografted in C57BL/6 mice.

Abstract Source:

Nutr Cancer. 2011 ;63(7):1036-43. Epub 2011 Sep 2. PMID: 21888506

Abstract Author(s):

Ming-Feng Chen, Chih-Min Yang, Cheng-Ming Su, Jiunn-Wang Liao, Miao-Lin Hu

Article Affiliation:

Ming-Feng Chen

Abstract:

Vitamin C in combination with vitamin K3 (vit CK3) has been shown to inhibit tumor growth and lung metastasis in vivo, but the mechanism of action is poorly understood. Herein, C57BL/6 mice were implanted (s.c.) with Lewis lung carcinoma (LLC) for 9 days before injection (i.p.) with low-dose (100 mg vit C/kg + 1 mg vit K3/kg), high-dose (1,000 mg vit C/kg + 10 mg vit K3/kg) vit CK3 twice a week for an additional 28 days. As expected, vit CK3 or cisplatin (6 mg/kg, as a positive control) significantly and dose-dependently inhibited tumor growth and lung metastasis in LLC-bearing mice. Vit CK3 restored thebody weight of tumor-bearing mice to the level of tumor-free mice. Vit CK3 significantly decreased activities of plasma metalloproteinase (MMP)-2, -9, and urokinase plasminogen activator (uPA). In lung tissues, vit CK3 1) increased protein expression of tissue inhibitor of metalloproteinase-1 (TIMP-1), TIMP-2, nonmetastatic protein 23 homolog 1 and plasminogen activator inhibitor-1; 2) reduced protein expression of MMP-2 and MMP-9; and 3) inhibited the proliferating cell nuclear antigen (PCNA). These results demonstrate that vit CK3 inhibits primary tumor growth and exhibits antimetastastic potential in vivo through attenuated tumor invasion and proliferation.

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Sayer Ji
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Depression: 21st Century Solutions + The Dark Side of Wheat

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