M.-R. Ahn, S.W. Kim, S. Kumazawa, T. Ohta. Artepillin C suppresses angiogenesis by inhibiting tube-formation and inducing apoptosis of endothelial cells. J. Food Nutr. Res. 1(5), 92–96, 2013.

S. Kumazawa, J.S. Bonvehí, C. Torres, M.-R. Ahn, F.J. Bermejo. Chemical and Functional Characterisation of Propolis Collected from East Andalusia (Southern Spain). Phytochem Anal. 24, 608–615, 2013.

K. Shimomura, Y. Sugiyama, J. Nakamura, M.-R. Ahn, S. Kumazawa. Component analysis of propolis collected on Jeju Island, Korea. Phytochemistry. 93, 222–229, 2013.

S.-J. Choi, K. Shimomura, S. Kumazawa, M.-R. Ahn. Antioxidant properties and phenolic composition of propolis from diverse geographic regions in Korea. Food Sci. Technol. Res. 19(2), 211–222, 2013.

K. Sjimomura, S. Inui, Y. Sugiyama, M. Kurosawa, J. Nakamura, S.J. Choi, M.-R. Ahn, S. Kumazawa. Identification of the Plant Origin of Propolis from Jeju Island, Korea, by Observation of Honeybee Behavior and Phytochemical Analysis. Biosci. Biotechnol. Biochem. 76(11), 2135–2138, 2012.

S. Kumazawa, Y. Okuyama, M. Murase, M.-R. Ahn, J. Nakamura, T. Tatefuji. Antioxidant Activity in Honeys of Various Floral Origins: Isolation and Identification of Antioxidants in Peppermint Honey. Food. Sci. Technol. Res. 18(5), 679–685, 2012.

A. Hatano, T. Nonaka, M. Yoshino, M.-R. Ahn, S. Tazawa, Y. Araki, S. Kumazawa. Antioxidant Activity and Phenolic Constituents of Red Propolis from Shandong, China. Food. Sci. Technol. Res. 18(4), 577–584, 2012.

S.-I. Park, Y.J. Lee, Y.H. Cha, M.-R. Ahn. Antibacterial and Antifungal Activities of Propolis Collected in Various Areas of Korea by High Performance Thin-Layer Chromatography. Korean J. Apiculture. 26(2), 93–102, 2011.

K. Kunimasa, M.-R. Ahn, T. Kobayashi, R. Eguchi, S. Kumazawa, Y. Fujimori, T. Nakano, T. Nakayama, K. Kaji, T. Ohta. Brazilian propolis suppresses angiogenesis by inducing apoptosis in tube-forming endothelial cells through inactivation of survival signal ERK1/2. Evid Based Complement Alternat Med. doi:10.1093/ecam/nep024. [Epub ahead of print], 2011.

H.Kh. Haider, Y.-J. Lee, M.-R. Ahn, S. Jiang, P.H.A. Rafeeq, M. Ashraf. Phosphodiesterase inhibition with tadalafil provides longer and sustained protection of stem cells. Am. J. Physiol. Heart Circ. Physiol. 299(5), 1395–1404, 2011.

S. Kumazawa, M.-R. Ahn, T. Fujimoto, M. Kato. Radical-scavenging activity and phenolic constituents of propolis from different regions of Argentina. Nat. Prod. Res. 24(9), 804–812, 2010.

A.C.H.F. Sawaya, P.V. Abdelnur, M.N. Eberlin, S. Kumazawa, M.-R. Ahn, K.S. Bang, N. Nagaraja, V.S. Bankova, H. Afrouzan. Fingerprinting of Propolis by Easy Ambient Sonic-Spray Ionization Mass Spectrometry. Talanta, 81(1), 100–108, 2010.

M.-R. Ahn, K. Kunimasa, S. Kumazawa, K. Kaji, Y. Uto, H. Hori, H. Nagasawa, T. Nakayama, T. Ohta. Correlation between antiangiogenic activity and antioxidant activity of various components from propolis. Mol Nut. Food Res. 53(5), 643–651, 2009.

M.-R. Ahn, S.M. Messerli, K. Kunimasa, M. Yanagihara, T. Tatefuji, K. Hashimoto, V. Mautner, Y. Uto, H. Hori, S. Kumazawa, K. Kaji, T. Ohta, T, H. Maruta. Artepillin C (ARC) in Brazilian green propolis selectively blocks the oncogenic PAK1 signaling and suppresses the growth of NF tumors in mice. Phytother. Res. 23(3), 423–427, 2009.

S. Kumazawa, J. Nakamura, M. Murase, M. Miyagawa, M.-R. Ahn, S. Fukumoto. Plant origin of Okinawan propolis: honeybee behavior observation and phytochemical analysis. Naturwissenschaften. 95(8), 781–786, 2008.

M.-R. Ahn, K. Kunimasa, T. Ohta, S. Kumazawa, M. Kamihira, K. Kaji, Y. Uto, H. Hori, H. Nagasawa, T. Nakayama. Suppression of tumor-induced angiogenesis by Brazilian propolis: major component artepillin C inhibits in vitro tube formation and endothelial cell proliferation. Cancer Lett. 252(2), 235–243, 2007.

M.-R. Ahn, S. Kumazawa, Y. Usui, J. Nakamura, M. Matsuka, F. Zhu, T. Nakayama. Antioxidant activity and constituents of propolis collected in various areas of China. Food Chem. 101(4), 1383–1392, 2007.