Search Results - "Hayatsu, T"

Overview paper: Novel expression of 25-hydroxyvitamin D3-1a-hydroxylase in egg-laying hens by Sugiyama, T, Akima, Y, Hayatsu, T

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Use of blue cotton for detection of mutagenicity in human feces excreted after ingestion of cooked meat by Hayatsu, H, Hayatsu, T, Wataya, Y

“…Fried ground beef has been shown to contain mutagens, and the major mutagenic component has been identified as 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline…”
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Problems in monitoring mutagenicity of human urine by Hayatsu, H, Hayatsu, T, Zheng, Q L, Ohara, Y, Arimoto, S

“…Blue-cotton (-rayon) adsorbable fractions of human urines were examined for mutagenicity in Salmonella typhimurium TA98 with metabolic activation. Ingestion of…”
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Suppressing effect of Lactobacillus casei administration on the urinary mutagenicity arising from ingestion of fried ground beef in the human by Hayatsu, H, Hayatsu, T

“…It is known that the ingestion of cooked meat which contains carcinogenic heterocyclic amines causes increase in urinary mutagenicity in humans. Using 6…”
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Inhibition of N-nitrosation of secondary amines in vitro by tea extracts and catechins by Tanaka, Kuniyuki, Hayatsu, Toshiko, Negishi, Tomoe, Hayatsu, Hikoya

“…Inhibition of nitrite-mediated N-nitrosation of dimethylamine, morpholine and N-methylaniline by tea extracts and by 6 individual catechins in the extracts was…”
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Identification of mutagenic heterocyclic amines (IQ, Trp-P-1 and AαC) in the water of the Danube River by Kataoka, Hiroyuki, Hayatsu, Toshiko, Hietsch, Gerhard, Steinkellner, Hans, Nishioka, Sachiko, Narimatsu, Shizuo, Knasmüller, Siegfried, Hayatsu, Hikoya

“…Three mutagenic heterocyclic amines, 2-amino-3-methylimidazo-[4,5- f]quinoline (IQ), 3-amino-1,4-dimethyl-5 H-pyrido[4,3- b]indole (Trp-P-1) and 2-amino-9…”
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A Short-Column Technique for Concentrating Mutagens/Carcinogens Having Polycyclic Structures by Hayatsu, Hikoya, Hayatsu, Toshiko, Arimoto, Sakae, Sakamoto, Hiroshi

“…Copper phthalocyanine trisulfonate (cpt) is known to form complexes with polycyclic planar compounds and for that reason has been used in a rayon…”
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CHARACTERIZATION OF MUTAGENIC FRACTIONS IN BEEF EXTRACT AND IN COOKED GROUND BEEF. USE OF BLUE-COTTON FOR EFFICIENT EXTRACTION by HAYATSU, Hikoya, MATSUI, Yukari, OHARA, Yoshiko, OKA, Takanori, HAYATSU, Toshiko

“…Mutagenic components in commercial beef extract and in cooked ground beef were adsorbed from their aqueous solutions on cotton bearing covalently linked…”
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Protection against the bacterial mutagenicity of heterocyclic amines by purpurin, a natural anthraquinone pigment by Marczylo, Timothy H., Hayatsu, Toshiko, Arimoto-Kobayashi, Sakae, Tada, Mikio, Fujita, Ken-ichi, Kamataki, Tetsuya, Nakayama, Kazuo, Hayatsu, Hikoya

“…Purpurin (1,2,4-trihydroxy-9,10-anthraquinone) is a naturally occurring anthraquinone pigment found in species of madder root. We have found that the presence…”
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Effect of atmosphere on pyrolysis of Nicalon by SHIMOO, T, OKAMURA, K, HAYATSU, T

“…The pyrolytic behavior of Nicalon under a N2 atmosphere was investigated at temperatures from 1673 to 1973 K and was compared with that under an Ar atmosphere…”
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Mutagenicity Arising from Boiled Rice on Treatment with Nitrous Acid by Hayatsu, Hikoya, Hayatsu, Toshiko

“…When an aqueous homogenate of boiled rice was treated with nitrous acid at pH 3, direct‐acting mutagens were formed. The presence of the mutagens was…”
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Mutagenic metabolites in urine and feces of rats fed with 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline, a carcinogenic mutagen present in cooked meat by HAYATSU, H, KASAI, H, YOKOYAMA, S, MIYAZAWA, T, YAMAIZUMI, Z, SATO, S, NISHIMURA, S, ARIMOTO, S, HAYATSU, T, OHARA, Y

“…To study the in vivo fate of 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline (MeIQx), a carcinogenic mutagen present in cooked meat, rats were fed MeIQx in the…”
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Non-covalent binding of carcinogenic heterocyclic amines to polynucleotides by Hayatsu, Hikoya, Tanaka, Yuji, Hayatsu, Toshiko

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Adsorption of mutagens to cotton bearing covalently bound trisulfo-copper-phthalocyanine by Hayatsu, H, Oka, T, Wakata, A, Ohara, Y, Hayatsu, T, Kobayashi, H, Arimoto, S

“…A method for separating nonpolar mutagens from their dilute aqueous solutions is described. It utilizes the affinity of the mutagens to a phthalocyanine…”
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Inhibition of nitrosamine formation by extracts of green, brown (roasted), oolong and black teas by Tanaka, K., Hayatsu, T., Sakata, I., Hayatsu, H.

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Fecal mutagenicity arising from ingestion of fried ground beef in the human by Hayatsu, H, Hayatsu, T, Wataya, Y, Mower, H F

“…Fried ground beef has been shown to contain mutagens, and the major mutagenic component has been identified as 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline…”
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Evaluation of blue-chitin column, blue-rayon hanging, and XAD-resin column techniques for concentrating mutagens from two Japanese rivers by Sakamoto, Hiroshi, Ohe, Takeshi, Hayatsu, Toshiko, Hayatsu, Hikoya

“…Highly mutagenic water of the Katsura River, Kyoto, and moderately mutagenic of the Asahi River, Okayama, were used to evaluate the efficacy of three…”
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Porphyrins as potential inhibitors against exposure to carcinogens and mutagens by Hayatsu, H, Negishi, T, Arimoto, S, Hayatsu, T

“…Studies have shown that there are many substances that can interfere with the actions of carcinogens and mutagens. Porphyrins, which often are constituents of…”
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MUTAGENICITY OF HUMAN URINE CAUSED BY INGESTION OF FRIED GROUND BEEF by HAYATSU, Hikoya, HAYATSU, Toshiko, OHARA, Yoshiko

“…On ingestion of fried ground beef by humans, the urinary mutagenicity, as examined by the Ames test, increased rapidly and then decreased during a period of…”
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Inhibition of the mutagenicity of cooked-beef basic fraction by its acidic fraction by Hayatsu, H, Inoue, K, Ohta, H, Namba, T, Togawa, K, Hayatsu, T, Makita, M, Wataya, Y

“…By using the Salmonella/microsome system, it was found that the activity of mutagens present in the basic fraction of cooked-ground-beef was completely…”
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