51
|
Ikura K, Kometani T, Yoshikawa M, Sasaki R, Chiba H. Crosslinking of Casein Components by Transglutaminase. ACTA ACUST UNITED AC 2014. [DOI: 10.1080/00021369.1980.10864171] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
52
|
Yoshikawa M, Sasaki R, Chiba H. Effects of Chemical Phosphorylation of Bovine Casein Components on the Properties Related to Casein Micelle Formation. ACTA ACUST UNITED AC 2014. [DOI: 10.1080/00021369.1981.10864626] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
53
|
Miyawaki D, Ejima Y, Uezono H, Yoshida K, Nishimura H, Otsuki N, Nibu K, Sasaki R. Result of Multimodal Treatment Including Radiation Therapy for Squamous Cell Carcinomas of Maxillary Sinus: A Retrospective Study. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
54
|
Tokunaga S, Tachihara M, Koyama H, Ejima Y, Shinke H, Tamura D, Otera H, Kobayashi K, Funada Y, Sasaki R, Ohno Y, Nishimura Y. A Retrospective Study of Risk Factors for Radiation Pneumonitis of Definitive Chemoradiotherapy for the Treatment of Locally Advanced Lung Cancer By Emphysema Quantification. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu348.20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
55
|
Toyomasu Y, Demizu Y, Hashimoto N, Takagi M, Mima M, Terashima K, Fujii O, Jin D, Suga M, Takada A, Ii N, Niwa Y, Sasaki R, Murakami M, Hishikawa Y, Abe M, Nomoto Y, Sakuma H, Fuwa N. Treatment Outcomes of Particle Therapy Using Protons or Carbon Ions for Locally Advanced Head and Neck Squamous Cell Carcinoma. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
56
|
Mino K, Nishimura S, Ninomiya S, Tujii H, Matsumori Y, Tsuchida M, Hosoi M, Koseki K, Wada S, Hasegawa M, Sasaki R, Murakami-Yamaguchi Y, Narita H, Suzuki T, Miyata N, Mizukami T. Regulation of tissue factor pathway inhibitor-2 (TFPI-2) expression by lysine-specific demethylase 1 and 2 (LSD1 and LSD2). Biosci Biotechnol Biochem 2014; 78:1010-7. [PMID: 25036127 DOI: 10.1080/09168451.2014.910104] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Tissue factor pathway inhibitor-2 (TFPI-2) is a major inhibitor of extracellular matrix degradation. Decreases in TFPI-2 contribute to malignant tumor cell production, and TFPI-2 is a presumed tumor suppressor. TFPI-2 gene transcription is regulated by two epigenetic mechanisms: DNA methylation of the promoter and K4 methylation of histone 3 (H3). Lysine-specific demethylase 1 (LSD1) and LSD2 demethylate H3K4me2/1. LSD1 has been implicated in TFPI-2 regulation through both epigenetic mechanisms, but the involvement of LSD2 remains unknown. We prepared a monoclonal anti-LSD2 antibody that clearly distinguishes LSD2 from LSD1. Knockdown of LSD1 or LSD2 by siRNAs increased TFPI-2 protein and mRNA. Simultaneous knockdown of both LSD1 and LSD2 showed additive effects. Bisulfite sequencing revealed that CpG sites in the TFPI-2 promoter region were unmethylated. These results indicate that LSD2 also contributes to TFPI-2 regulation through histone modification, and that further studies of the involvement of LSD2 in tumor malignancy are warranted.
Collapse
|
57
|
Sakairi M, Sasaki R, Kaneko A, Seki Y, Nagasawa D. Evaluation of metal cation effects on galvanic corrosion behavior of the A5052 aluminum alloy in low chloride ion containing solutions by electrochemical noise impedance. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.02.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
58
|
Shibata K, Fukuwatari T, Iguchi Y, Kurata Y, Sudo M, Sasaki R. Comparison of the Effects of Di(2-ethylhexyl)phthalate, a Peroxisome Proliferator, on the Vitamin Metabolism Involved in the Energy Formation in Rats Fed with a Casein or Gluten Diet. Biosci Biotechnol Biochem 2014; 70:1331-7. [PMID: 16794311 DOI: 10.1271/bbb.50618] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
In order to find an alleviation method for the adverse effect of environmental endocrine disrupters, we studied the effects of the putative endocrine disrupter and peroxisome proliferator, di(2-ethylhexyl)phthalate (DEHP), on animal growth and vitamin metabolism. It is known that the effects of chemical compounds such as xenobiotics differ according to the dietary protein source. We compared the effects of dietary DEHP administration on rats fed with a diet containing milk casein or wheat gluten. The increased conversion ratio of tryptophan to nicotinamide by DEHP administration was significantly higher in the casein group than in the gluten group. We also investigated the effects of DEHP on the urinary excretion of other vitamins. DEHP administration resulted in decreased urinary excretion of vitamin B(1), vitamin B(2), and pantothenic acid.
Collapse
|
59
|
Sasaki R, Hossain MZ, Abe N, Uchigashima M, Goto T. Development of an analytical method for the determination of sterigmatocystin in grains using LCMS after immunoaffinity column purification. Mycotoxin Res 2014; 30:123-9. [PMID: 24696064 DOI: 10.1007/s12550-014-0196-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2013] [Revised: 03/14/2014] [Accepted: 03/17/2014] [Indexed: 11/29/2022]
Abstract
The mycotoxin sterigmatocystin (STC) is produced mainly by some Aspergillus and Penicillium fungi; it naturally contaminates cereals, peanuts, and products derived from these crops, and is both mutagenic and carcinogenic. As an intermediate of aflatoxin (AF) biosynthesis, its structure is similar to that of AF. Although immunoaffinity columns (IACs) are a popular approach to sample clean-up, no IAC is commercially available for STC, but a commercially available IAC for AF shows cross reactivity to STC. We here developed a new method for analyzing STC in grains using such an IAC and liquid chromatography mass spectrometry (LCMS), and validated this method using six different grains. The STC limit of detection (signal-to-noise ratio, S/N = 3) was 2.5 pg (1.0 μg/kg in the product), and the calibration curve was linear in the range of 7.5-375 pg (3.0-150 μg/kg in the product). The within-day recovery of STC from samples spiked with STC at 5.0 and 50 μg/kg was 83.2-102.5% and the RSDr (relative standard deviation of repeatability) of these samples was 1.9-6.5%; the RSDr of STC-pretreated grain samples was 3.1-14.0%. Average recovery of STC from samples spiked with STC in the range of 5.0-100 μg/kg STC was 83.2-102.5%, with an RSDr of 0.24-6.5%; the RSDr of STC-pretreated grain samples was 2.4-14.0%. In an intermediate precision study, the average STC recovery from STC-spiked samples by three analysts was 95.2-107.5%, with RSDRi (intermediate precision) of 4.0-7.1%; the RSDRi of the STC-pretreated samples was 4.8-10.4%. Thus, the proposed method was effective for STC analysis in grains, and holds potential for a novel application of a commercial IAC, intended for AFs, in STC analysis.
Collapse
|
60
|
Sasaki R, Yukio U, Eri F. DIFFERENCES IN THE MUSCLE ONSET TIMING BETWEEN LANDING POSTURES DECIDED BEFORE AND DURING JUMP-LANDING. Br J Sports Med 2014. [DOI: 10.1136/bjsports-2014-093494.261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
61
|
Sasaki R, Akasaka H, Miyawaki D, Sulaiman N, Demizu Y, Yamada S, Murakami M, Fukumoto T. EP-1435: Inra-abdomical space modulated radiotherapy: Safety and efficacy of absorbable spacer in particle therapy. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)31553-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
62
|
Akasaka H, Sasaki R, Takayama I, Nakahana M, Sulaiman N, Miyawaki D, Yoshida K, Ejima Y, Uezono H, Mizushina Y. EP-1841: A novel radiosensitizer, monogalactosyl diacylglycerol, enhanced the cytotoxic effects for the pancreatic cancer. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)31959-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
63
|
Mima M, Demizu Y, Jin D, Hashimoto N, Takagi M, Terashima K, Fujii O, Niwa Y, Akagi T, Daimon T, Hishikawa Y, Abe M, Murakami M, Sasaki R, Fuwa N. Particle therapy using carbon ions or protons as a definitive therapy for patients with primary sacral chordoma. Br J Radiol 2013; 87:20130512. [PMID: 24288399 DOI: 10.1259/bjr.20130512] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE This study retrospectively evaluated the efficacy and toxicity of particle therapy using carbon ions or protons for primary sacral chordomas. METHODS We evaluated 23 patients with primary sacral chordoma treated with carbon ion therapy (CIT) or proton therapy (PT) between July 2005 and June 2011 at the Hyogo Ion Beam Medical Center, Hyogo, Japan. The median patient age was 72 years. 14 patients were treated with 70.4 Gy equivalents (GyE) in 16 fractions and 9 were treated with 70.4 GyE in 32 fractions. CIT was used for 16 patients, and PT was used for 7 patients. RESULTS The median follow-up period was 38 months. At 3 years, local control (LC), overall survival (OS) and progression-free survival (PFS) for all patients were 94%, 83% and 68%, respectively. The log-rank test revealed that male sex was significantly related to better PFS (p=0.029). No other factors, including dose fractionation and ion type, were significant for LC, OS or PFS. In nine patients, ≥ Grade 3 acute dermatitis was observed, and ≥ Grade 3 late toxicities were observed in nine patients. The 32-fraction protocol reduced severe toxicities in both the acute and late phases compared with the 16-fraction protocol. CONCLUSION Particle therapy for patients with sacral chordoma showed favourable LC and OS. Severe toxicities were successfully reduced by modifying the dose fractionation and treatment planning in the later treatment era. Thus, this therapeutic modality should be considered useful and safe. ADVANCES IN KNOWLEDGE This is the first study including both CIT and PT for sacral chordomas.
Collapse
|
64
|
Hasegawa M, Yasuda Y, Tanaka M, Nakata K, Umeda E, Wang Y, Watanabe C, Uetake S, Kunoh T, Shionyu M, Sasaki R, Shiina I, Mizukami T. A novel tamoxifen derivative, ridaifen-F, is a nonpeptidic small-molecule proteasome inhibitor. Eur J Med Chem 2013; 71:290-305. [PMID: 24321833 DOI: 10.1016/j.ejmech.2013.11.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Revised: 11/02/2013] [Accepted: 11/06/2013] [Indexed: 01/01/2023]
Abstract
In a survey of nonpeptide noncovalent inhibitors of the human 20S proteasome, we found that a novel tamoxifen derivative, RID-F (compound 6), inhibits all three protease activities of the proteasome at submicromolar levels. Structure-activity relationship studies revealed that a RID-F analog (RID-F-S*4, compound 25) is the smallest derivative compound capable of inhibiting proteasome activity, with a potency similar to that of RID-F. Kinetic analyses of the inhibition mode and competition experiments involving biotin-belactosin A (a proteasome inhibitor) binding indicated that the RID-F derivatives interact with the protease subunits in a different manner. Culturing of human cells with these compounds resulted in accumulation of ubiquitinated proteins and induction of apoptosis. Thus, the RID-F derivatives may be useful lead chemicals for the generation of a new class of proteasome inhibitors.
Collapse
|
65
|
Ito S, Asahi M, Shimoyama T, Suzuki Y, Sasaki R, Fujishima Y, Mine T, Oyake T, Murai K, Ishida Y. Durable Response in Multiple Myeloma Patients Treated with Induction and Post-Transplantation Therapy with Novel Drugs. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt459.83] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
66
|
Mukumoto N, Miyawaki D, Akasaka H, Nakayama M, Miura Y, Umetani K, Nariyama N, Shinohara K, Kondoh T, Sasaki R. Normal Tissue Tolerance of Microplanar Beam X-ray: A Long-term Observation. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
67
|
Miyawaki D, Yoshida K, Ejima Y, Nishimura H, Sulaiman N, Kiyota N, Saito M, Otsuki N, Nibu K, Sasaki R. Radiation-Induced Hypothyroidism in Squamous Cell Carcinoma of the Head and Neck: Comparison Between Concurrent Chemoradiation Therapy and Radiation Therapy Alone. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
68
|
Suleiman N, Yoshida K, Miyawaki D, Ejima Y, Nishimura H, Furukawa J, Fujisawa M, Sasaki R. Efficacy of Salvage Radiation Therapy in Men With Biochemical Recurrence After Radical Prostatectomy: A Comparison With Endocrine Therapy. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
69
|
Otani K, Sakairi M, Sasaki R, Kaneko A, Seki Y, Nagasawa D. Effect of metal cations on corrosion behavior and surface film structure of the A3003 aluminum alloy in model tap waters. J Solid State Electrochem 2013. [DOI: 10.1007/s10008-013-2260-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
70
|
Suzuki T, Ozasa H, Itoh Y, Zhan P, Sawada H, Mino K, Walport L, Ohkubo R, Kawamura A, Yonezawa M, Tsukada Y, Tumber A, Nakagawa H, Hasegawa M, Sasaki R, Mizukami T, Schofield CJ, Miyata N. Identification of the KDM2/7 histone lysine demethylase subfamily inhibitor and its antiproliferative activity. J Med Chem 2013; 56:7222-31. [PMID: 23964788 PMCID: PMC3929130 DOI: 10.1021/jm400624b] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
![]()
Histone Nε-methyl lysine demethylases
KDM2/7 have been identified as potential targets for cancer therapies.
On the basis of the crystal structure of KDM7B, we designed and prepared
a series of hydroxamate analogues bearing an alkyl chain. Enzyme assays
revealed that compound 9 potently inhibits KDM2A, KDM7A,
and KDM7B, with IC50s of 6.8, 0.2, and 1.2 μM, respectively.
While inhibitors of KDM4s did not show any effect on cancer cells
tested, the KDM2/7-subfamily inhibitor 9 exerted antiproliferative
activity, indicating the potential for KDM2/7 inhibitors as anticancer
agents.
Collapse
|
71
|
Ogasawara D, Itoh Y, Tsumoto H, Kakizawa T, Mino K, Fukuhara K, Nakagawa H, Hasegawa M, Sasaki R, Mizukami T, Miyata N, Suzuki T. Lysine-specific demethylase 1-selective inactivators: protein-targeted drug delivery mechanism. Angew Chem Int Ed Engl 2013; 52:8620-4. [PMID: 23824985 DOI: 10.1002/anie.201303999] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Indexed: 01/01/2023]
|
72
|
Ogasawara D, Itoh Y, Tsumoto H, Kakizawa T, Mino K, Fukuhara K, Nakagawa H, Hasegawa M, Sasaki R, Mizukami T, Miyata N, Suzuki T. Lysine-Specific Demethylase 1-Selective Inactivators: Protein-Targeted Drug Delivery Mechanism. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201303999] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
|
73
|
Oda H, Sasaki R, Hagiwara A, Kimura A. Prediction score of indications for whole body computed tomography in blunt trauma patients. Crit Care 2013. [PMCID: PMC3642694 DOI: 10.1186/cc12232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
|
74
|
Yamagishi K, Iso H, Kokubo Y, Saito I, Yatsuya H, Ishihara J, Inoue M, Tsugane S, Sobue T, Hanaoka T, Ogata J, Baba S, Mannami T, Okayama A, K. Y, Miyakawa K, Saito F, Koizumi A, Sano Y, Hashimoto I, Ikuta T, Tanaba Y, Miyajima Y, Suzuki N, Nagasawa S, Furusugi Y, Nagai N, Sanada H, Hatayama Y, Kobayashi F, Uchino H, Shirai Y, Kondo T, Sasaki R, Watanabe Y, Miyagawa Y, Kobayashi Y, Machida M, Kishimoto Y, Takara E, Fukuyama T, Kinjo M, Irei M, Sakiyama H, Imoto K, Yazawa H, Seo T, Seiko A, Ito F, Shoji F, Saito R, Murata A, Minato K, Motegi K, Fujieda T, Abe T, Katagiri M, Suzuki M, Matsui K, Doi M, Terao A, Ishikawa Y, Tagami T, Doi H, Urata M, Okamoto N, Ide F, Sueta H, Sakiyama H, Onga N, Takaesu H, Uehara M, Horii F, Asano I, Yamaguchi H, Aoki K, Maruyama S, Ichii M, Takano M, Matsushima S, Natsukawa S, Akabane M, Konishi M, Okada K, Honda Y, Sakurai KYS, Tsuchiya N, Sugimura H, Tsubono Y, Kabuto M, Tominaga S, Iida M, Ajiki W, Ioka A, Sato S, Yasuda N, Nakamura K, Kono S, Suzuki K, Takashima Y, Yoshida M, Maruyama E, Yamaguchi M, Matsumura Y, Sasaki S, Watanabe S, Kadowaki T, Noda M, Mizoue T, Kawaguchi Y, Shimizu H. Dietary intake of saturated fatty acids and incident stroke and coronary heart disease in Japanese communities: the JPHC Study. Eur Heart J 2013; 34:1225-32. [DOI: 10.1093/eurheartj/eht043] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
75
|
Terakata M, Fukuwatari T, Sano M, Nakao N, Sasaki R, Fukuoka SI, Shibata K. Establishment of true niacin deficiency in quinolinic acid phosphoribosyltransferase knockout mice. J Nutr 2012; 142:2148-53. [PMID: 23096007 DOI: 10.3945/jn.112.167569] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Pyridine nucleotide coenzymes are involved in >500 enzyme reactions and are biosynthesized from the amino acid L-tryptophan (L-Trp) as well as the vitamin niacin. Hence, "true" niacin-deficient animals cannot be "created" using nutritional techniques. We wanted to establish a truly niacin-deficient model animal using a protocol that did not involve manipulating dietary L-Trp. We generated mice that are missing the quinolinic acid (QA) phosphoribosyltransferase (QPRT) gene. QPRT activity was not detected in qprt(-/-)mice. The qprt(+/+), qprt(+/-), or qprt(-/-) mice (8 wk old) were fed a complete diet containing 30 mg nicotinic acid (NiA) and 2.3 g L-Trp/kg diet or an NiA-free diet containing 2.3 g L-Trp/kg diet for 23 d. When qprt(-/-)mice were fed a complete diet, food intake and body weight gain did not differ from those of the qprt(+/+) and qprt(+/-) mice. On the contrary, in the qprt(-/-) mice fed the NiA-free diet, food intake and body weight were reduced to 60% (P < 0.01) and 70% (P < 0.05) of the corresponding values for the qprt(-/-) mice fed the complete diet at d 23, respectively. The nutritional levels of niacin, such as blood and liver NAD concentrations, were also lower in the qprt(-/-) mice than in the qprt(+/+) and the qprt(+/-) mice. Urinary excretion of QA was greater in the qprt(-/-) mice than in the qprt(+/+) and qprt(+/-) mice (P < 0.01). These data suggest that we generated truly niacin-deficient mice.
Collapse
|