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International Journal of Medicinal Mushrooms

Publicou 12 edições por ano

ISSN Imprimir: 1521-9437

ISSN On-line: 1940-4344

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.2 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.4 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.3 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00066 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.34 SJR: 0.274 SNIP: 0.41 CiteScore™:: 2.8 H-Index: 37

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Antitumor Activity of Oral Administration of Mycovirus Extract from Lentinus edodes (Berk.) Sing. (Agaricomycetideae) on Murine Lymphoma

Volume 2, Edição 2, 2000, 8 pages
DOI: 10.1615/IntJMedMushr.v2.i2.20
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RESUMO

The present study evaluated the antitumor activity of polyethylene glycol (PEG)-concentrated double-stranded RNA mycovirus, present abundantly in fresh 2-day-old buds of Lentinus edodes (shiitake mushroom). K36 cell-line induced murine lymphoma in male AKR mice was the tumor-model used. The difference in antitumor activity by three types of intervention in relation to leukemia cell inoculation was assessed. The three interventions were: prefeeding with mycovirus extract before K36 cell inoculation, simultaneously feeding of extract with K36 cell inoculation and administering the extract after tumors were induced. Tumors obtained 14 d after leukemia cell inoculation were investigated in detail. Prefeeding with mycovirus extract conferred the best antitumor activity with a tumor inhibition rate of 80.7% (p < 0.001). Simultaneous feeding and administering extract after tumors were induced were also effective with tumor regression rates of 73.8% (p < 0.001) and 67.6% (p < 0.001), respectively. In addition, the effective dose of mycovirus extract caused only a negligible body-weight reduction of 0.63% (p = 0.866) without any toxic effects in mice. Electron microscopy revealed apoptotic cells in all three regimens. These findings were confirmed by confocal microscopy on TUNEL-stained lymphoma sections, a hallmark of apoptosis. Interestingly, electron microscopy also revealed abundant defective tumor retrovirus in the prefed regimen and lesser in the other two regimens. Cytokines interferon-γ and tumor necrosis factor-α in serum from healthy mice was assayed after oral administration of the extract. These surrogate markers of immunomodulation were significantly elevated (p = 0.004 and p = 0.025, respectively). This proved the formulated hypothesis that immunomodulation by mycovirus extract contributed to the observed antitumor activity and production of defective tumor retrovirus.

CITADO POR
  1. Ng Mah-Lee, Yap Ann-Teck, Inhibition of Human Colon Carcinoma Development by Lentinan from Shiitake Mushrooms (Lentinus edodes), The Journal of Alternative and Complementary Medicine, 8, 5, 2002. Crossref

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