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K. Umegaki · SciRah

Researcher profile · Semantic Scholar

K. Umegaki

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K. Umegaki — researcher profile on SciRah

h-index: 38
Works: 237
Citations: 5,416

Most-cited papers

Astaxanthin functions differently as a selective peroxisome proliferator-activated receptor γ modulator in adipocytes and macrophages.
M. Inoue, H. Tanabe, A. Matsumoto, Michiyo Takagi +3 more
2012Biochemical Pharmacology109 citations
Semantic Scholar
The Prevalence of Dietary Supplement Use among College Students: A Nationwide Survey in Japan
Etsuko Kobayashi, Yoko Sato, K. Umegaki, T. Chiba
2017Nutrients89 citations Open access
Semantic Scholar
Pivotal Roles of Monocytes/Macrophages in Stroke
T. Chiba, K. Umegaki
2013Mediators of Inflammation81 citations Open access
Semantic Scholar
Effects of dietary ingredients on function and expression of P-glycoprotein in human intestinal epithelial cells.
T. Okura, M. Ibe, K. Umegaki, K. Shinozuka +1 more
2010Biological and Pharmaceutical Bulletin71 citations Open access
Semantic Scholar
Inappropriate Usage of Dietary Supplements in Patients by Miscommunication with Physicians in Japan
T. Chiba, Yoko Sato, T. Nakanishi, Kaori Yokotani +2 more
2014Nutrients59 citations Open access
Semantic Scholar
Evaluation of Methionine Content in a High-Fat and Choline-Deficient Diet on Body Weight Gain and the Development of Non-Alcoholic Steatohepatitis in Mice
T. Chiba, Sachina Suzuki, Yoko Sato, Tatsuki Itoh +1 more
2016PLoS ONE50 citations Open access
Semantic Scholar
Lymphocyte vitamin C levels as potential biomarker for progression of Parkinson's disease.
K. Ide, Hiroshi Yamada, K. Umegaki, K. Mizuno +8 more
2015Nutrition (Burbank, Los Angeles County, Calif.)49 citations
Semantic Scholar
Ginkgo biloba extract attenuates warfarin-mediated anticoagulation through induction of hepatic cytochrome P450 enzymes by bilobalide in mice.
Yuko Taki, Kaori Yokotani, S. Yamada, K. Shinozuka +3 more
2012Phytomedicine42 citations
Semantic Scholar
Concomitant Use of Dietary Supplements and Medicines in Patients due to Miscommunication with Physicians in Japan
T. Chiba, Yoko Sato, Sachina Suzuki, K. Umegaki
2015Nutrients39 citations Open access
Semantic Scholar
An educational intervention improved knowledge of dietary supplements in college students
T. Chiba, Etsuko Kobayashi, T. Okura, Masashi Sekimoto +3 more
2020BMC Public Health32 citations Open access
Semantic Scholar
Estrogen-dependent activation of neutral cholesterol ester hydrolase underlying gender difference of atherogenesis in apoE-/- mice.
T. Chiba, M. Ikeda, K. Umegaki, T. Tomita
2011Atherosclerosis30 citations
Semantic Scholar
Behaviors of consumers, physicians and pharmacists in response to adverse events associated with dietary supplement use
T. Chiba, Yoko Sato, Etsuko Kobayashi, K. Ide +2 more
2017Nutrix Journal28 citations Open access
Semantic Scholar
Trans-Resveratrol Enhances the Anticoagulant Activity of Warfarin in a Mouse Model
T. Chiba, Y. Kimura, Sachina Suzuki, T. Tatefuji +1 more
2016Journal of atherosclerosis and thrombosis27 citations Open access
Semantic Scholar
Coleus forskohlii extract induces hepatic cytochrome P450 enzymes in mice.
N. Virgona, Kaori Yokotani, Y. Yamazaki, F. Shimura +6 more
2012Food and Chemical Toxicology27 citations
Semantic Scholar
Dietary Reference Intakes for Japanese 2010: Water-Soluble Vitamins
K. Shibata, T. Fukuwatari, Eri Imai, T. Hayakawa +4 more
201226 citations Open access
Semantic Scholar
Prevalence of inappropriate dietary supplement use among pregnant women in Japan.
Yoko Sato, T. Nakanishi, T. Chiba, Kaori Yokotani +4 more
2013Asia Pacific Journal of Clinical Nutrition25 citations
Semantic Scholar
The Prevalence of Dietary Supplement Use Among Elementary, Junior High, and High School Students: A Nationwide Survey in Japan
Etsuko Kobayashi, C. Nishijima, Yoko Sato, K. Umegaki +1 more
2018Nutrients24 citations Open access
Semantic Scholar
Diet‐induced non‐alcoholic fatty liver disease affects expression of major cytochrome P450 genes in a mouse model
T. Chiba, Keiko Noji, Shohei Shinozaki, Sachina Suzuki +2 more
2016The Journal of pharmacy and pharmacology24 citations
Semantic Scholar
Dietary Coleus forskohlii extract generates dose‐related hepatotoxicity in mice
N. Virgona, Yuko Taki, S. Yamada, K. Umegaki
2013Journal of Applied Toxicology24 citations
Semantic Scholar
Hepatic cytochrome P450 mediates interaction between warfarin and Coleus forskohlii extract in vivo and in vitro
Kaori Yokotani, T. Chiba, Yoko Sato, Yuko Taki +4 more
2012The Journal of pharmacy and pharmacology24 citations
Semantic Scholar
Methods for estimating causal relationships of adverse events with dietary supplements
K. Ide, Hiroshi Yamada, Mamoru Kitagawa, Yohei Kawasaki +7 more
2015BMJ Open22 citations Open access
Semantic Scholar
[Method Verification for Vitamin D Analysis in Processed Foods Based on the Analytical Manual for the Standard Tables of Food Composition in Japan 2015 (Seventh Revised Edition)].
Ippei Suzuki, Yasuhito Kumai, A. Tada, Kyoko Sato +3 more
2020Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan15 citations Open access
Semantic Scholar
A rapid HPLC with evaporative light scattering method for quantification of forskolin in multi-herbal weight-loss solid oral dosage forms.
N. Virgona, Yuko Taki, K. Umegaki
2010Pharmazie15 citations
Semantic Scholar
Influence of dietary macronutrients on induction of hepatic drug metabolizing enzymes by Coleus forskohlii extract in mice.
Kaori Yokotani, T. Chiba, Yoko Sato, T. Nakanishi +2 more
2013Journal of Nutritional Science and Vitaminology14 citations Open access
Semantic Scholar
Evaluation of plasma antioxidant activity in rats given excess EGCg with reference to endogenous antioxidants concentrations and assay methods
Kaori Yokotani, K. Umegaki
2017Free radical research13 citations
Semantic Scholar
Peripheral Vitamin C Levels in Alzheimer's Disease: A Cross-Sectional Study.
K. Ide, Hiroshi Yamada, Yohei Kawasaki, Mie Yamanaka +8 more
2016Journal of Nutritional Science and Vitaminology13 citations Open access
Semantic Scholar
Factors Associated with Dietary Supplement Use among Preschool Children: Results from a Nationwide Survey in Japan.
Yoko Sato, Sachina Suzuki, T. Chiba, K. Umegaki
2016Journal of Nutritional Science and Vitaminology13 citations Open access
Semantic Scholar
Distribution of vitamin E intake among Japanese dietary supplement and fortified food users: a secondary analysis from the National Health and Nutrition Survey, 2003-2009.
Megumi Tsubota-Utsugi, M. Nakade, Eri Imai, Nobuyo Tsuboyama-Kasaoka +6 more
2013Journal of Nutritional Science and Vitaminology13 citations Open access
Semantic Scholar
Influence of analytical method on the fluctuation of vitamin C value for vegetables listed in the revised standard table of food composition in Japan.
Ayako Kojima, Yoko Sato, Yoko Hashimoto, T. Nakanishi +1 more
201013 citations Open access
Semantic Scholar
[Analysis of Safety Alerts Associated with Dietary Supplements from Japan and Overseas].
Etsuko Kobayashi, Yoko Sato, K. Umegaki, T. Chiba
2018Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan12 citations Open access
Semantic Scholar
Nationwide Online Survey Enables the Reevaluation of the Safety of Coleus forskohlii Extract Intake Based on the Adverse Event Frequencies
C. Nishijima, T. Chiba, Yoko Sato, K. Umegaki
2019Nutrients11 citations Open access
Semantic Scholar
Induction of fatty liver by Coleus forskohlii extract through enhancement of de novo triglyceride synthesis in mice
K. Umegaki, Y. Yamazaki, Kaori Yokotani, T. Chiba +2 more
2014Toxicology Reports11 citations Open access
Semantic Scholar
[Attitudes of pregnant Japanese women and folic acid intake for the prevention of neural tube defects: a nationwide Internet survey].
Yoko Sato, T. Nakanishi, T. Chiba, K. Umegaki
2014Nihon Koshu Eisei Zasshi (Japanese Journal of Public Health)11 citations
Semantic Scholar
Reporting of adverse events related to dietary supplements to a public health center by medical staff: a survey of clinics and pharmacies
K. Ide, Hiroshi Yamada, Yohei Kawasaki, Marika Noguchi +4 more
2016Therapeutics and Clinical Risk Management10 citations Open access
Semantic Scholar
[Information sources for causality assessment of health problems related to health foods and their usefulness].
K. Umegaki, Hiroshi Yamada, T. Chiba, T. Nakanishi +2 more
2013Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan10 citations Open access
Semantic Scholar
Effects of Ginkgo biloba extract on the pharmacokinetics and pharmacodynamics of tolbutamide in protein‐restricted rats
Yuko Taki, E. Hagiwara, Chiemi Hirose, K. Shinozuka +2 more
2011The Journal of pharmacy and pharmacology10 citations
Semantic Scholar
Personal behaviors including food consumption and mineral supplement use among Japanese adults: a secondary analysis from the National Health and Nutrition Survey, 2003-2010.
Yoko Sato, Megumi Tsubota-Utsugi, T. Chiba, Nobuyo Tsuboyama-Kasaoka +3 more
2016Asia Pacific Journal of Clinical Nutrition9 citations
Semantic Scholar
Nationwide Online Survey to Complement the Current Voluntary Reporting System for Adverse Events Associated with Dietary Supplements: Application to the Case of Skin Manifestations.
C. Nishijima, Yoko Sato, T. Chiba, K. Umegaki
2018Journal of Nutritional Science and Vitaminology8 citations Open access
Semantic Scholar
[Nationwide Online Survey Method to Estimate Ongoing Adverse Events Caused by Supplement Use: Application to Diarrhea].
C. Nishijima, T. Chiba, Yoko Sato, Hiroshi Yamada +1 more
2018Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan8 citations Open access
Semantic Scholar
Positive and Negative Aspects of Food with Health Claims in Japan.
K. Umegaki
2015Journal of Nutritional Science and Vitaminology8 citations Open access
Semantic Scholar
[Effect of three herbal extracts on cytochrome P450 and possibility of interaction with drugs].
Kaori Yokotani, T. Chiba, Yoko Sato, T. Nakanishi +2 more
2013Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan8 citations Open access
Semantic Scholar
The Prevalence of Dietary Supplements That Claim Estrogen-like Effects in Japanese Women
T. Chiba, Yuko Tousen, C. Nishijima, K. Umegaki
2022Nutrients7 citations Open access
Semantic Scholar
[A Systematic Review of the Acceptable Intake Level of Vitamin K among Warfarin Users].
Yoko Sato, M. Murata, T. Chiba, K. Umegaki
2015Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan7 citations Open access
Semantic Scholar
Inappropriate Application of Food for Specified Health Uses
T. Chiba, Yoko Sato, T. Nakanishi, Kaori Yokotani +3 more
20147 citations Open access
Semantic Scholar
Effects of Short-Term Consumption of a Large Amount of Tea Catechins on Chromosomal Damage, Oxidative Stress Markers, Serum Lipid, Folic Acid, and Total Homocysteine Levels: A Randomized, Double-Blind, Controlled Study
T. Yoshikawa, Hiroshi Yamada, Katsuhiko Matsuda, H. Niino +9 more
20127 citations Open access
Semantic Scholar
Coleus forskohlii Extract Attenuated the Beneficial Effect of Diet-Treatment on NASH in Mouse Model.
Sachina Suzuki, C. Nishijima, Yoko Sato, K. Umegaki +2 more
2020Journal of Nutritional Science and Vitaminology6 citations Open access
Semantic Scholar
The Major Cytochrome P450 Subtype Activities in Diet-Induced Non- Alcoholic Steatohepatitis Mouse Model
Sachina Suzuki, Yoko Sato, K. Umegaki, T. Chiba
20156 citations
Semantic Scholar
Effect of Tea Catechins on Folate Analysis in Green Tea by Microbiological Assay.
K. Umegaki, Yuki Sekine, Yoko Sato, T. Chiba +1 more
2016Journal of Nutritional Science and Vitaminology5 citations Open access
Semantic Scholar
Identification of Compounds in Coleus forskohlii Extract Involved in the Induction of Hepatic CYP and Fatty Liver in Mice.
K. Umegaki, Kaori Yokotani, Shinsuke Marumoto, M. Miyazawa
2019Journal of Oleo Science4 citations Open access
Semantic Scholar
Tandem Cation/Anion Exchange SPE Cartridge Method for Sample Desalting for HPLC Analysis of Soluble Dietary Fiber: Development and Inter-laboratory Validation
Ippei Suzuki, Yasuhito Kumai, Machiko Kitagawa, Y. Kishimoto +3 more
2019Analytical Sciences4 citations Open access
Semantic Scholar

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