K. Iwai

T. Kawada, K. Iwai, Takehiko Tanaka, 1986, Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine.

The Precursors Affecting the Composition of Capsaicin and Its Analogues in the Fruits of Capsicum annuum var. annuum cv. Karayatsubusa

T. Kawada, K. Iwai, Tetsuya Suzuki, 1981 .

In Vivo and In Vitro Formation of Dihydrocapsaicin in Sweet Pepper Fruits, Capsicum annuum L. var. grossum

K. Iwai, M. Kobashi, Tetsuya Suzuki, 1977 .

Stimulatory effect of an endogenous peptide in rat pancreatic juice on pancreatic enzyme secretion in the presence of atropine: evidence for different mode of action of stimulation from exogenous trypsin inhibitors.

K. Iwai, T. Fushiki, S. Fukuoka, 1984, Biochemical and biophysical research communications.

Increased in growth rate and activity of the tryptophan-NAD pathway caused by di-n-butylphthalate in rats fed on a tryptophan-limited diet.

K. Iwai, K. Shibata, K. Murata, 1982, Journal of nutritional science and vitaminology.

Isolation and characterization of 6-hydroxymethylpterin as the Crithidia growth-promoting factor from spinach chloroplasts.

K. Iwai, M. Kobashi, T. Suzuki, 1976, Biochimica et biophysica acta.

Radioassay of the folate-hydrolyzing enzyme activity, and the distribution of the enzyme in biological cells and tissues.

K. Iwai, M. Kohashi, H. Oe, 1983, Journal of nutritional science and vitaminology.

Isolation and properties of crystalline quinolinate phosphoribosyltransferase from hog kidney.

K. Iwai, K. Shibata, 1980, Biochimica et biophysica acta.

Influence of folate-binding protein from bovine milk on the absorption of folate in gastrointestinal tract of rat.

K. Iwai, T. Fushiki, M. Tani, 1983, Biochimica et biophysica acta.

Pancreatic Enzyme Secretion Mediated by Novel Peptide: Monitor Peptide Hypothesis

K. Iwai, T. Fushiki, S. Fukuoka, 1988, Pancreas.

Garlic supplementation increases testicular testosterone and decreases plasma corticosterone in rats fed a high protein diet.

K. Iwai, M. Imafuku, Y. Oi, 2001, The Journal of nutrition.

Intracellular localization of capsaicin and its analogues in Capsicum fruit II. The vacuole as the intracellular accumulation site of capsaicinoid in the protoplast of Capsicum fruit

K. Iwai, Tetsuya Suzuki, H. Fujiwake, 1980 .

Radioassay for dihydropteroate-synthesizing enzyme activity.

K. Iwai, O. Okinaka, 1980, Methods in enzymology.

Evidence for an intraluminal mediator in rat pancreatic enzyme secretion: reconstitution of the pancreatic response with dietary protein, trypsin and the monitor peptide.

K. Iwai, T. Fushiki, S. Fukuoka, 1989, The Journal of nutrition.

Influence of Neural Blockages and Proglumide on Rat Pancreatic Enzyme Secretion in Response to Intraluminal Fatty Acid

K. Iwai, T. Fushiki, S. Fukuoka, 1987, Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine.

Phosphorothioate analogues of phosphoribosyldiphosphate are substrates of quinolinate phosphoribosyltransferase.

W. O'Sullivan, S. Kunjara, K. Iwai, 1986, The International journal of biochemistry.

Capsaicin, a pungent principle of hot red pepper, evokes catecholamine secretion from the adrenal medulla of anesthetized rats.

T. Kawada, K. Iwai, T. Watanabe, 1987, Biochemical and biophysical research communications.

Effective separation of capsaicin and its analogues by reversed-phase high-performance thin-layer chromatography☆

T. Kawada, K. Iwai, Tetsuya Suzuki, 1980 .

Some Pungent Principles of Spices Cause the Adrenal Medulla to Secrete Catecholamine in Anesthetized Rats 1

T. Kawada, K. Iwai, T. Watanabe, 1988, Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine.

Formation and metabolism of pungent principle of Capsicum fruits. XV. Microdetermination of capsaicin by high-performance liquid chromatography with electrochemical detection.

T. Kawada, K. Iwai, T. Watanabe, 1985, Journal of chromatography.

Simultaneous micro-determination of nicotinamide and its major metabolites, N1-methyl-2-pyridone-5-carboxamide and N1-methyl-4-pyridone-3-carboxamide, by high-performance liquid chromatography.

T. Kawada, K. Iwai, K. Shibata, 1988, Journal of chromatography.

Two hypotheses on the feedback regulation of pancreatic enzyme secretion

K. Iwai, T. Fushiki, 1989, FASEB journal : official publication of the Federation of American Societies for Experimental Biology.

Competition of a growth stimulating-/cholecystokinin (CCK) releasing-peptide (monitor peptide) with epidermal growth factor for binding to 3T3 fibroblasts.

K. Iwai, T. Fushiki, E. Sugimoto, 1987, Biochemical and biophysical research communications.

Purification and sequencing of a trypsin-sensitive cholecystokinin-releasing peptide from rat pancreatic juice. Its homology with pancreatic secretory trypsin inhibitor.

M. Hirose, K. Iwai, T. Fushiki, 1987, The Journal of biological chemistry.

Microdetermination of N1-methyl-2-pyridone-5-carboxamide, a major metabolite of nicotinic acid and nicotinamide, in urine by high-performance liquid chromatography.

T. Kawada, K. Iwai, K. Shibata, 1987, Journal of chromatography.

Simultaneous micro-determination of serotonin and 5-hydroxyindole-3-acetic acid with 5-hydroxy-N omega-methyltryptamine, as an internal standard, in biological materials by high-performance liquid chromatography with electrochemical detection.

T. Kawada, K. Iwai, K. Shibata, 1988, Journal of chromatography.

High-performance liquid chromatographic determination of nicotinamide in rat tissue samples and blood after extraction with diethyl ether.

T. Kawada, K. Iwai, K. Shibata, 1987, Journal of chromatography.

Effect of Dietary Protein Levels on the Urinary Excretion of Nicotinamide and Its Metabolites in Rats

K. Iwai, K. Shibata, Rika Nomamoto, 1988 .

Regulation of pyridine nucleotide coenzyme metabolism.

K. Iwai, T. Hayakawa, K. Shibata, 1991, Advances in experimental medicine and biology.

Intake of sweeteners and pungent ingredients increases the thermogenin content in brown adipose tissue of rat

N. Aoki, Tatsuo Watanabe, T. Kawada, 1991 .

Adrenal sympathetic efferent nerve and catecholamine secretion excitation caused by capsaicin in rats.

T. Kawada, K. Iwai, T. Watanabe, 1988, The American journal of physiology.

Allyl-containing sulfides in garlic increase uncoupling protein content in brown adipose tissue, and noradrenaline and adrenaline secretion in rats.

T. Kawada, K. Iwai, T. Ariga, 1999, The Journal of nutrition.

Effect of Capsaicin Pretreatment on Capsaicin-Induced Catecholamine Secretion From the Adrenal Medulla in Rats#

T. Kawada, K. Iwai, T. Watanabe, 1988, Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine.

Gastrointestinal absorption and metabolism of capsaicin and dihydrocapsaicin in rats.

K Iwai, T. Kawada, K. Iwai, 1984, Toxicology and applied pharmacology.

BLOOD FOLIC ACID STUDIES. VII. PURIFICATION AND PROPERTIES OF THE FOLIC ACID PRECURSORS OF HUMAN ERYTHROCYTES.

K. Iwai, G. Toennies, P. M. Luttner, 1964, The Journal of biological chemistry.

Formation and Accumulation of Pungent Principle of Hot Pepper Fruits, Capsaicin and Its Analogues, in Capsicum annuun var. annuun cv. Karayatsubusa at Different Growth Stages after Flowering

K. Iwai, Tetsuya Suzuki, H. Fujiwake, 1979 .

Intracellular localization of capsaicin and its analogues, capsaicinoid, in Capsicum fruit 1. Microscopic investigation of the structure of the placenta of Capsicum annuum var. annuum cv. Karayatsubusa

K. Iwai, Tetsuya Suzuki, H. Fujiwake, 1980 .

In Vivo and In Vitro Metabolism of Dihydrocapsaicin, a Pungent Principle of Hot Pepper, in Rats

Kazuo Iwai, T. Kawada, K. Iwai, 1985 .

Quantitative microanalysis of capsaicin, dihydrocapsaicin and nordihyrocapsaicin using mass fragmentography.

K. Iwai, M. Kobashi, T. Suzuki, 1976, Journal of chromatography.

Long-chain N-vanillyl-acylamides from Capsicum oleoresin.

K. Kobata, Tatsuo Watanabe, K. Iwai, 2010, Journal of agricultural and food chemistry.

Simultaneous microdetermination of capsaicin and its four analogues by using high-performance liquid chromatography and gas chromatography--mass spectrometry.

K Iwai, K. Iwai, T Suzuki, 1979, Journal of chromatography.

Evaluation of l-Methionine Sulfoxide Bioavailability by Sulfur Incorporation into Liver Glutathione and Urinary Excretion as Inorganic Sulfate

K. Iwai, M. Higuchi, K. Yasumoto, 1983 .

In Vitro and In Situ Absorption of Methionine Sulfoxide in Rat Small Intestine

K. Iwai, M. Higuchi, K. Yasumoto, 1982 .

Effect of dietary orotic acid on the levels of liver and blood NAD in rats.

K. Iwai, T. Hayakawa, K. Shibata, 1985, Journal of nutritional science and vitaminology.

Induction of capsaicin-hydrolyzing enzyme activity in rat liver by continuous oral administration of capsaicin

Kazuo Iwai, Tatsuo Watanabe, T. Kawada, 1992 .

High-performance liquid chromatographic separation of physiological folate monoglutamate compounds. Investigation of absorption and conversion of pteroylglutamic acid in the small intestine of the rat in situ.

K. Iwai, M. Tani, 1983, Journal of chromatography.

Isolation and characterization of 6-hydroxymethylpterin as a Crithidia growth-promoting factor from spinach chloroplasts.

K. Iwai, M. Kobashi, T. Suzuki, 1980, Methods in enzymology.

Distribution of quinolinate phosphoribosyl-transferase in animals, plants and microorganisms.

K. Iwai, H. Taguchi, 1973, Journal of nutritional science and vitaminology.

Why does a difference in growth rate between rats of the Wistar and Sprague Dawley strains occur when a niacin-free and tryptophan-limiting diet is fed?

K. Iwai, T. Hayakawa, K. Shibata, 1991, Advances in experimental medicine and biology.

A new fluorometric assay method for quinolinic acid.

K. Iwai, H. Taguchi, Y. Shimabayashi, 1983, Analytical biochemistry.

Metabolic control for maintaining NAD in rats fed on tryptophan-limiting amino acid diets.

K. Iwai, K. Shibata, K. Murata, 1980, Journal of nutritional science and vitaminology.

Chemical modifications of the crystalline quinolinate phosphoribosyltransferase from hog liver.

K. Iwai, H. Taguchi, 1976, Biochimica et biophysica acta.

Purification and crystallization of quinolinate phosphoribosyltransferase from hog liver.

K. Iwai, H. Taguchi, 1974, Biochemical and biophysical research communications.

Some nutritional effects of folate-binding protein in bovine milk on the bioavailability of folate to rats.

K. Iwai, M. Tani, 1984, The Journal of nutrition.

Effect of a histidine-excess diet on a tetrahydrofolylpolyglutamate pattern in rat liver.

K. Iwai, M. Kohashi, A. Takahashi, 1990, Journal of Nutritional Science and Vitaminology.

Separation and Determination of Tetrahydrofolylpolyglutamates and their 5-Methyl Derivatives by Reversed-phase High-performance Liquid Chromatography with Electrochemical Detection

K. Iwai, M. Kohashi, A. Takahashi, 1989 .

Microdetermination of folate monoglutamates in serum by liquid chromatography with electrochemical detection.

K. Iwai, H. Sotobayashi, M. Kohashi, 1986, Journal of chromatography.

Distribution of Dihydrofolate Reductase and Activity Producing Folate Cofactors in Rat Small Intestinal Segments

K. Iwai, M. Kohashi, K. Yoneda, 1987 .

Electrophoretic and immunological properties of folate-binding protein isolated from bovine milk.

K. Iwai, T. Fushiki, M. Tani, 1983 .

Formation of Pungent Principles in Fruits of Sweet Pepper, Capsicum annuum L. var. grossum during Post-harvest Ripening under Continuous Light

K. Iwai, M. Kobashi, Tetsuya Suzuki, 1977 .

Stimulation of rat pancreatic enzyme secretion by diet components.

K. Iwai, T. Fushiki, S. Fukuoka, 1984 .

Preparation of a verifiable peptide-protein immunogen: direction-controlled conjugation of a synthetic fragment of the monitor peptide with myoglobin and application for sequence analysis.

K. Iwai, T. Fushiki, S. Fukuoka, 1988, Analytical biochemistry.

Growth stimulating activity on 3T3 fibroblasts of the molecular weight 6,500-peptide purified from rat pancreatic juice.

K. Iwai, T. Fushiki, E. Sugimoto, 1986, Biochemical and biophysical research communications.

Elevation of plasma CCK concentration after intestinal administration of a pancreatic enzyme secretion-stimulating peptide purified from rat bile-pancreatic juice: analysis with N-terminal region specific radioimmunoassay.

K. Iwai, T. Fushiki, S. Fukuoka, 1986, Biochemical and biophysical research communications.

Selective Assay Method with Use of Heat Stability for a Trypsin-sensitive Cholecystokinin (CCK)-releasing Peptide (Monitor Peptide) in Rat Bile-pancreatic Juice

K. Iwai, T. Fushiki, S. Fukuoka, 1987 .

Requirement for pancreatic juice in the feedback regulation of pancreatic enzyme secretion in swine: evidence for the occurrence of a regulatory factor in the pancreatic juice

K. Iwai, S. Fukuoka, Masahiro Tsujkawa, 1986 .

Stimulation of pancreatic enzyme secretion by a peptide purified from rat bile-pancreatic juice.

K. Iwai, T. Fushiki, S. Fukuoka, 1986, The Journal of nutrition.

Atropine-nonsensitive feedback regulatory mechanism of rat pancreatic enzyme secretion in response to food protein intake.

K. Iwai, T. Fushiki, S. Fukuoka, 1987, The Journal of nutrition.

[Croton oil-induced hemorrhoid model in rat: comparison of anti-inflammatory activity of diflucortolone valerate with other glucocorticoids].

K. Iwai, K. Nishiki, K. Nishinaga, 1988, Nihon yakurigaku zasshi. Folia pharmacologica Japonica.

Allylthiamindisulfide and related compounds enhance thermogenesis with increasing noradrenaline and adrenaline secretion in rats.

K. Iwai, K. Wada, H. Ikeda, 1999, Journal of nutritional science and vitaminology.

Intracellular distribution, purification, and properties of dihydrofolate synthetase from pea seedlings.

K. Iwai, M. Kobashi, M. Ikeda, 1980, Methods in enzymology.

Nutritional requirements for folate compounds and some enzyme activities involved in the folate biosynthesis.

K. Iwai, M. Ikeda, S. Fujino, 1977, Journal of nutritional science and vitaminology.

Digestion of α-Lactalbumin in Rat Gastrointestinal Tracts

K. Iwai, T. Fushiki, I. Naeshiro, 1986 .

Garlic-like but odorless plant Allium ampeloprasum 'Mushuu-ninniku'

H. Sakurai, K. Iwai, H. Kawakami, 2002 .

Oleuropein aglycone enhances UCP1 expression in brown adipose tissue in high-fat-diet-induced obese rats by activating β-adrenergic signaling.

Kenichi Watanabe, Tatsuo Watanabe, T. Kawada, 2017, The Journal of nutritional biochemistry.

Isolation and identification of glycinamide ribonucleotide accumulated in pea seedlings in a “folate-deficient” state

K. Iwai, S. Nakagawa, O. Okinaka, 1963 .

THE GROWTH INHIBITION OF THE GERMINATING SEEDS BY SULFONAMIDES AND ITS REVERSAL BY FOLIC ACID ANALOGUES

K. Iwai, S. Nakagawa, O. Okinaka, 1962 .

Intracellular Localization of the Capsaicinoid Synthesizing Enzyme in Sweet Pepper Fruits

K. Iwai, M. Kobashi, Tetsuya Suzuki, 1978 .

Improvement on the Determination Method of NADP and Correction of Blood NADP Level in Women Students

K. Iwai, K. Shibata, 1990 .

Purification and Characterization of Guanosine Triphosphate Cyclohydrolase from Serratia indica

K. Iwai, M. Kohashi, Tshtomu Itadani, 1980 .

Some Properties of GTP Cyclohydrolase from Serratia indica and the Pterin Product by Its Enzymatic Reaction

K. Iwai, M. Kobashi, H. Hariu, 1976 .

Analysis of Unconjugated Pterins in Food Resources and Human Urine

K. Iwai, M. Kohashi, K. Tomita, 1980 .

Gas chromatography-mass spectrometric determination of fatty acids in seed oil of winged bean (Psophocarpus tetragonolobus (L.) DC).

J. Terao, K. Iwai, M. Higuchi, 1982, Journal of nutritional science and vitaminology.

Comparison of the Enzyme Activities in the Tryptophan-NAD Pathway between the Wistar and Sprague Dawley Strains of Rats

K. Iwai, T. Hayakawa, K. Shibata, 1986 .

Effect of tryptophan and/or casein supplementation on NAD levels in livers of the rats fed on niacin- and protein-free diet.

K. Iwai, T. Hayakawa, 1984, Journal of nutritional science and vitaminology.

Enzymatic Formation of Capsaicinoid from Vanillylamine and Iso-type Fatty Acids by Cell-free Extracts of Capsicum annuum var. annuum cv. Karayatsubusa

K. Iwai, Tetsuya Suzuki, H. Fujiwake, 1980 .

Roles as metabolic regulators of the non-nutrients, capsaicin and capsiate, supplemented to diets

Tatsuo Watanabe, K. Iwai, Aya Yazawa, 2003 .

Crystalline Quinolinate Phosphoribosyltransferase from Alcaligenes eutrophus subsp. quinolinicus: Characteristic Properties and Chemical Modifications

K. Iwai, K. Shibata, 1980 .

Inhibition of Hog Liver Crystalline Quinolinate Phosphoribosyltransferase by Nucleotides, Quinolinate Analogues and Sulfhydryl Reagents

K. Iwai, H. Taguchi, 1976 .

Crystallization and properties of quinolinate phosphoribosyltransferase from hog liver.

K. Iwai, H. Taguchi, 1980, Methods in enzymology.

Investigation of Digestion and Absorption of a Dietary Protein by Using Its Antigenicity as an Index: Gastrointestinal Digestion of Ovalbumin

K. Iwai, T. Fushiki, N. Yamamoto, 1985 .

Effects of Cinchomeronic Acid and Related Compounds on the Growth of Radish Seedlings

K. Iwai, K. Okumura, H. Taguchi, 1992 .

Effects of Dietary Casein and Adrenal Hormone on the Dietary Induction of α-Amino-β-carboxymuconate-ε-semialdehyde Decarboxylase Activity in Rat

K. Iwai, T. Hayakawa, 1985 .

Glutathione Oxidase from Bovine Skim Milk Membranes: Its Copurification with γ-Glutamyltransferase

K. Iwai, K. Yasumoto, K. Iwami, 1981 .

Biochemical Studies on Naturally Occurring Pteridines

K. Iwai, M. Kobashi, 1971 .

Purification and Properties of Dihydrofolate Reductase from Crithidia fasciculata

K. Iwai, M. Kohashi, H. Oe, 1981 .

Tissue Distribution of the Enzymes Concerned with the Biosynthesis of NAD in Rats

K. Iwai, T. Hayakawa, K. Shibata, 1986 .

Denaturation of the Folate-binding Protein in Pasteurized Milk

K. Iwai, M. Kohashi, S. Honda, 1985 .

Occurrence of Crithidia Factors and Folic Acid in Various Bacteria

K. Iwai, M. Kobashi, H. Fujisawa, 1970, Journal of bacteriology.

The occurrence and properties of methenyltetrahydrofolate cyclohydrolase in plants

K. Iwai, N. Suzuki, 1973 .

The Accumulation of 5′-Phosphoribosyl-5-amino-4-imidazolecarboxamide in Folate-deficient Pea Seedlings and the Enzymatic Reaction in which the Compound is Involved

K. Iwai, Y. Fujisawa, N. Suzuki, 1972 .

The biosynthesis of folic acid compounds in plants. V. Reaction mechanism of the dihydropteroate-synthesizing enzyme from pea seedlings.

K. Iwai, O. Okinaka, 1970, The Journal of vitaminology.

Biosynthesis of folic acid compounds in plants VI. The occurrence and properties of the dihydrofolate-synthesizing enzyme in pea seedlings

K. Iwai, M. Ikeda, 1970 .

The occurrence and properties of dihydrofolate reductase in pea seedlings.

K. Iwai, N. Suzuki, 1970 .

The biosynthesis of folic acid compounds in plants. II. Some properties of dihydropteroate-synthesizing enzyme in pea seedlings.

K. Iwai, O. Okinaka, 1968, The Journal of vitaminology.

Some Characteristics of Formyltetrahydrofolate Synthetase from Pea Seedlings

K. Iwai, N. Suzuki, S. Mizoguchi, 1967 .

Purification and Properties of Formyltetrahydrofolate Synthetase form Spinach

K. Iwai, N. Suzuki, S. Mizoguchi, 1967 .

The occurrence and properties of methylenetetrahydrofolate dehydrogenase in pea seedlings, and intracellular distribution of some folate-linked enzymes in the plant.

K. Iwai, N. Suzuki, 1974, Journal of nutritional science and vitaminology.