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Kawakami C, Sato A, Sumita H, Isozaki A, Shimizu H, Kanetaka T, Maehara K, Ao K, Nariai A, Takeshita F, Kizu R, Mori M. Fever Responses Are Enhanced with Advancing Age during Respiratory Syncytial Virus Infection among Children under 24 Months Old. TOHOKU J EXP MED 2018; 245:217-222. [DOI: 10.1620/tjem.245.217] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
| | - Atsuo Sato
- Department of Pediatrics, Children’s Center, Yokohama Rosai Hospital
| | | | - Atsushi Isozaki
- Department of Pediatrics, Yokohama City Minato Red Cross Hospital
| | - Hiroyuki Shimizu
- Children’s Medical Center, Yokohama City University Medical Center
| | | | | | - Kota Ao
- Department of Pediatrics, Yamato Municipal Hospital
| | | | | | - Rika Kizu
- Department of Pediatrics, Yokosuka Kyosai Hospital
| | - Masaaki Mori
- Department of Lifetime Clinical Immunology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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Kizu R, Nishimura K, Sato R, Kosaki K, Tanaka T, Tanigawara Y, Hasegawa T. Population Pharmacokinetics of Diazoxide in Children with Hyperinsulinemic Hypoglycemia. Horm Res Paediatr 2017; 88:316-323. [PMID: 28715810 PMCID: PMC5804843 DOI: 10.1159/000478696] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Accepted: 06/12/2017] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Diazoxide is the first-line treatment for pediatric hyperinsulinemic hypoglycemia (HI). This study aimed to elucidate the pharmacokinetics of diazoxide in children with HI. METHODS We obtained 81 blood samples from 22 children with HI. Measured serum diazoxide concentrations were used for population pharmacokinetic analysis. Patient factors influencing pharmacokinetics were estimated using nonlinear mixed-effects model analysis. Relationships between drug exposure and adverse drug reactions were also investigated. RESULTS Diazoxide disposition in the body was described by a 1-compartment model. Oral clearance (CL/F) and the volume of distribution were proportional to body weight (WT), as expressed by CL/F in males (liters/h) = 0.0358 + 0.00374 × WT (kg). CL/F in females was 39% greater than that in males. Steady-state concentrations of diazoxide were similar following twice- and 3 times-daily dosing when the total daily doses were comparable. A patient whose serum diazoxide concentration exceeded 100 μg/mL over a 4-month period developed hyperglycemia. No significant correlation was observed between severity of hirsutism and diazoxide concentration. CONCLUSION We have proposed for the first time a population pharmacokinetic model for diazoxide in children with HI. The potential risk of diabetes mellitus and/or hyperglycemia increases when serum concentrations of diazoxide exceed 100 μg/mL.
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Affiliation(s)
- Rika Kizu
- Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan,Department of Pediatrics, Yokosuka Kyosai Hospital, Yokosuka, Japan
| | - Kazuko Nishimura
- Department of Clinical Pharmacokinetics and Pharmacodynamics, Keio University School of Medicine, Tokyo, Japan
| | - Reiko Sato
- Department of Clinical Pharmacokinetics and Pharmacodynamics, Keio University School of Medicine, Tokyo, Japan
| | - Kenjiro Kosaki
- Center for Medical Genetics, Keio University School of Medicine, Tokyo, Japan
| | | | - Yusuke Tanigawara
- Department of Clinical Pharmacokinetics and Pharmacodynamics, Keio University School of Medicine, Tokyo, Japan,*Prof. Yusuke Tanigawara, PhD, Department of Clinical Pharmacokinetics and Pharmacodynamics, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582 (Japan), E-Mail
| | - Tomonobu Hasegawa
- Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan,Japanese Society for Pediatric Endocrinology, Tokyo, Japan
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Ihara K, Fukano C, Ayabe T, Fukami M, Ogata T, Kawamura T, Urakami T, Kikuchi N, Yokota I, Takemoto K, Mukai T, Nishii A, Kikuchi T, Mori T, Shimura N, Sasaki G, Kizu R, Takubo N, Soneda S, Fujisawa T, Takaya R, Kizaki Z, Kanzaki S, Hanaki K, Matsuura N, Kasahara Y, Kosaka K, Takahashi T, Minamitani K, Matsuo S, Mochizuki H, Kobayashi K, Koike A, Horikawa R, Teno S, Tsubouchi K, Mochizuki T, Igarashi Y, Amemiya S, Sugihara S. FUT2 non-secretor status is associated with Type 1 diabetes susceptibility in Japanese children. Diabet Med 2017; 34:586-589. [PMID: 27859559 DOI: 10.1111/dme.13288] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/15/2016] [Indexed: 01/04/2023]
Abstract
AIM To examine the contribution of the FUT2 gene and ABO blood type to the development of Type 1 diabetes in Japanese children. METHODS We analysed FUT2 variants and ABO genotypes in a total of 531 Japanese children diagnosed with Type 1 diabetes and 448 control subjects. The possible association of FUT2 variants and ABO genotypes with the onset of Type 1 diabetes was statistically examined. RESULTS The se2 genotype (c.385A>T) of the FUT2 gene was found to confer susceptibility to Type 1A diabetes in a recessive effects model [odds ratio for se2/se2, 1.68 (95% CI 1.20-2.35); corrected P value = 0.0075]. CONCLUSIONS The FUT2 gene contributed to the development of Type 1 diabetes in the present cohort of Japanese children.
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Affiliation(s)
- K Ihara
- Department of Paediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
- Department of Paediatrics, Oita University School of Medicine, Yufu, Japan
| | - C Fukano
- Department of Paediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - T Ayabe
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - M Fukami
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - T Ogata
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
- Department of Paediatrics, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - T Kawamura
- Department of Paediatrics, Osaka City University Hospital, Osaka, Japan
| | - T Urakami
- Department of Paediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan
| | - N Kikuchi
- Department of Paediatrics, Yokohama City Minato Red Cross Hospital, Yokohama, Japan
| | - I Yokota
- Department of Clinical Laboratory, Shikoku Medical Center for Children and Adults, Zentsuji, Japan
- Department of Paediatrics, Graduate School of Medical Sciences Tokushima University, Tokushima, Japan
| | - K Takemoto
- Department of Paediatrics, Ehime University Hospital, Toon, Japan
- Department of Paediatrics, Sumitomo Besshi Hospital, Niihama, Japan
| | - T Mukai
- Department of Paediatrics, Asahikawa Medical University Hospital, Asahikawa, Japan
- Department of Paediatrics, Asahikawa-Kosei General Hospital, Asahikawa, Japan
| | - A Nishii
- Department of Paediatrics, JR Sendai Hospital, Sendai, Japan
| | - T Kikuchi
- Department of Paediatrics, Saitama Medical University Hospital, Saitama, Japan
- Department of Paediatrics, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - T Mori
- Department of Paediatrics, Nagano Red Cross Hospital, Nagano, Japan
- Department of Paediatrics, Shinshu Ueda Medical Centre, Ueda, Japan
| | - N Shimura
- Department of Paediatrics, Dokkyo Medical University Hospital, Shimotsuga, Japan
| | - G Sasaki
- Department of Paediatrics, Tokyo Dental College Ichikawa General Hospital, Ichikawa, Japan
| | - R Kizu
- Department of Paediatrics, Yokosuka Kyosai Hospital, Yokosuka, Japan
| | - N Takubo
- Department of Pediatrics, Kitasato University Hospital, Sagamihara, Japan
- Department of Paediatrics and Adolescent Medicine, Juntendo University School of Medicine, Tokyo, Japan
| | - S Soneda
- Department of Paediatrics, St Marianna University School of Medicine, Kawasaki, Japan
| | - T Fujisawa
- Department of Paediatrics, National Mie Hospital, Tsu, Japan
| | - R Takaya
- Department of Paediatrics, Osaka Medical College, Takatsuki, Japan
| | - Z Kizaki
- Department of Paediatrics, Japanese Red Cross Kyoto Daiichi Hospital, Kyoto, Japan
| | - S Kanzaki
- Department of Paediatrics, Tottori University Faculty of Medicine, Yonago, Japan
| | - K Hanaki
- Department of Paediatrics, Tottori Prefectural Kousei Hospital, Kurayoshi, Japan
| | - N Matsuura
- Department of Paediatrics, Teine Keijinkai Hospital, Sapporo, Japan
- Department of Early Childhood Care and Education, Seitoku University Junior College, Matsudo, Japan
| | - Y Kasahara
- Department of Paediatrics, Kanazawa University, Kanazawa, Japan
| | - K Kosaka
- Department of Paediatrics, University Hospital, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | | | - K Minamitani
- Department of Paediatrics, Teikyo University Chiba Medical Center, Ichihara, Japan
| | - S Matsuo
- Matsuo Kodomo Clinic, Kyoto, Japan
| | - H Mochizuki
- Department of Metabolism and Endocrinology, Saitama Children's Medical Centre, Saitama, Japan
| | - K Kobayashi
- Department of Paediatrics, University of Yamanashi Hospital, Chuo, Japan
| | - A Koike
- Miyanosawa Koike Child Clinic, Sapporo, Japan
| | - R Horikawa
- Division of Endocrinology and Metabolism, Department of Medical Subspecialties, National Medical Centre for Children and Mothers, Tokyo, Japan
| | - S Teno
- Teno Clinic, Izumo, Japan
| | - K Tsubouchi
- Department of Paediatrics, Chuno Kosei Hospital, Seki, Japan
| | - T Mochizuki
- Department of Paediatrics, Osaka City General Hospital, Osaka, Japan
- Department of Paediatrics, Osaka Police Hospital, Osaka, Japan
| | - Y Igarashi
- Igarashi Children's Clinic, Sendai, Japan
| | - S Amemiya
- Department of Paediatrics, Saitama Medical University Hospital, Saitama, Japan
| | - S Sugihara
- Department of Paediatrics, Tokyo Women's Medical University Medical Centre East, Tokyo, Japan
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Ayabe T, Fukami M, Ogata T, Kawamura T, Urakami T, Kikuchi N, Yokota I, Ihara K, Takemoto K, Mukai T, Nishii A, Kikuchi T, Mori T, Shimura N, Sasaki G, Kizu R, Takubo N, Soneda S, Fujisawa T, Takaya R, Kizaki Z, Kanzaki S, Hanaki K, Matsuura N, Kasahara Y, Kosaka K, Takahashi T, Minamitani K, Matsuo S, Mochizuki H, Kobayashi K, Koike A, Horikawa R, Teno S, Tsubouchi K, Mochizuki T, Igarashi Y, Amemiya S, Sugihara S. Variants associated with autoimmune Type 1 diabetes in Japanese children: implications for age-specific effects of cis-regulatory haplotypes at 17q12-q21. Diabet Med 2016; 33:1717-1722. [PMID: 27352912 DOI: 10.1111/dme.13175] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 05/08/2016] [Accepted: 06/27/2016] [Indexed: 12/11/2022]
Abstract
AIMS The aim of this study was to clarify the significance of previously reported susceptibility variants in the development of autoimmune Type 1 diabetes in non-white children. Tested variants included rs2290400, which has been linked to Type 1 diabetes only in one study on white people. Haplotypes at 17q12-q21 encompassing rs2290400 are known to determine the susceptibility of early-onset asthma by affecting the expression of flanking genes. METHODS We genotyped 63 variants in 428 Japanese people with childhood-onset autoimmune Type 1 diabetes and 457 individuals without diabetes. Possible association between variants and age at diabetes onset was examined using age-specific quantitative trait locus analysis and ordered-subset regression analysis. RESULTS Ten variants, including rs2290400 in GSDMB, were more frequent among the people with Type 1 diabetes than those without diabetes. Of these, rs689 in INS and rs231775 in CTLA4 yielded particularly high odds ratios of 5.58 (corrected P value 0.001; 95% CI 2.15-14.47) and 1.64 (corrected P value 5.3 × 10-5 ; 95% CI 1.34-2.01), respectively. Age-specific effects on diabetes susceptibility were suggested for rs2290400; heterozygosity of the risk alleles was associated with relatively early onset of diabetes, and the allele was linked to the phenotype exclusively in the subgroup of age at onset ≤ 5.0 years. CONCLUSIONS The results indicate that rs2290400 in GSDMB and polymorphisms in INS and CTLA4 are associated with the risk of Type 1 diabetes in Japanese children. Importantly, cis-regulatory haplotypes at 17q12-q21 encompassing rs2290400 probably determine the risk of autoimmune Type 1 diabetes predominantly in early childhood.
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Affiliation(s)
- T Ayabe
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - M Fukami
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - T Ogata
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
- Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - T Kawamura
- Department of Pediatrics, Osaka City University Hospital, Osaka, Japan
| | - T Urakami
- Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan
| | - N Kikuchi
- Department of Pediatrics, Yokohama City Minato Red Cross Hospital, Yokohama, Japan
| | - I Yokota
- Department of Clinical Laboratory, Shikoku Medical Center for Children and Adults, Zentsuji, Japan
- Department of Pediatrics, Graduate School of Medical Sciences Tokushima University, Tokushima, Japan
| | - K Ihara
- Department of Pediatrics, Kyushu University Hospital, Fukuoka, Japan
- Department of Pediatrics, Oita University Hospital, Yufu, Japan
| | - K Takemoto
- Department of Pediatrics, Ehime University Hospital, Toon, Japan
- Department of Pediatrics, Sumitomo Besshi Hospital, Niihama, Japan
| | - T Mukai
- Department of Pediatrics, Asahikawa Medical University Hospital, Asahikawa, Japan
- Department of Pediatrics, Asahikawa-Kosei General Hospital, Asahikawa, Japan
| | - A Nishii
- Department of Pediatrics, JR Sendai Hospital, Sendai, Japan
| | - T Kikuchi
- Department of Pediatrics, Saitama Medical University Hospital, Saitama, Japan
- Department of Pediatrics, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - T Mori
- Department of Pediatrics, Nagano Red Cross Hospital, Nagano, Japan
- Department of Pediatrics, Shinshu Ueda Medical Center, Ueda, Japan
| | - N Shimura
- Department of Pediatrics, Dokkyo Medical University Hospital, Shimotsuga, Japan
| | - G Sasaki
- Department of Pediatrics, Tokyo Dental College Ichikawa General Hospital, Ichikawa, Japan
| | - R Kizu
- Department of Pediatrics, Yokosuka Kyosai Hospital, Yokosuka, Japan
| | - N Takubo
- Department of Pediatrics, Kitasato University Hospital, Sagamihara, Japan
- Department of Pediatrics and Adolescent Medicine, Juntendo University School of Medicine, Tokyo, Japan
| | - S Soneda
- Department of Pediatrics, St. Marianna University School of Medicine, Kawasaki, Japan
| | - T Fujisawa
- Department of Pediatrics, National Mie Hospital, Tsu, Japan
| | - R Takaya
- Department of Pediatrics, Osaka Medical College, Takatsuki, Japan
| | - Z Kizaki
- Department of Pediatrics, Japanese Red Cross Kyoto Daiichi Hospital, Kyoto, Japan
| | - S Kanzaki
- Department of Pediatrics, Tottori University Faculty of Medicine, Yonago, Japan
| | - K Hanaki
- Department of Pediatrics, Tottori Prefectural Kousei Hospital, Kurayoshi, Japan
| | - N Matsuura
- Department of Pediatrics, Teine Keijinkai Hospital, Sapporo, Japan
- Department of Early Childhood Care and Education, Seitoku University Junior College, Matsudo, Japan
| | - Y Kasahara
- Department of Pediatrics, Kanazawa University, Kanazawa, Japan
| | - K Kosaka
- Department of Pediatrics, University Hospital, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | | | - K Minamitani
- Department of Pediatrics, Teikyo University Chiba Medical Center, Ichihara, Japan
| | - S Matsuo
- Matsuo Kodomo Clinic, Kyoto, Japan
| | - H Mochizuki
- Department of Metabolism and Endocrinology, Saitama Children's Medical Center, Saitama, Japan
| | - K Kobayashi
- Department of Pediatrics, University of Yamanashi Hospital, Chuo, Japan
| | - A Koike
- Miyanosawa Koike Child Clinic, Sapporo, Japan
| | - R Horikawa
- Division of Endocrinology and Metabolism, Department of Medical Subspecialties, National Medical Center for Children and Mothers, Tokyo, Japan
| | - S Teno
- Teno Clinic, Izumo, Japan
| | - K Tsubouchi
- Department of Pediatrics, Chuno Kosei Hospital, Seki, Japan
| | - T Mochizuki
- Department of Pediatrics, Osaka City General Hospital, Osaka, Japan
- Department of Pediatrics, Osaka Police Hospital, Osaka, Japan
| | - Y Igarashi
- Igarashi Children's Clinic, Sendai, Japan
| | - S Amemiya
- Department of Pediatrics, Saitama Medical University Hospital, Saitama, Japan
| | - S Sugihara
- Department of Pediatrics, Tokyo Women's Medical University Medical Center East, Tokyo, Japan
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Noguchi A, Nakamura K, Murayama K, Yamamoto S, Komatsu H, Kizu R, Takayanagi M, Okuyama T, Endo F, Takasago Y, Shoji Y, Takahashi T. Clinical and genetic features of lysinuric protein intolerance in Japan. Pediatr Int 2016; 58:979-983. [PMID: 26865117 DOI: 10.1111/ped.12946] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 01/12/2016] [Accepted: 02/01/2016] [Indexed: 12/14/2022]
Abstract
BACKGROUND Lysinuric protein intolerance (LPI) is a rare autosomal recessive disorder affecting the transport of cationic amino acid caused by mutations in solute carrier family 7 amino acid transporter light chain, y+ L system, member 7 (SLC7A7). This disorder occurs worldwide, especially in Finland and Japan, where founder effect mutations have been reported. Detailed features of the clinical symptoms and mutation types in Japanese LPI, however, remain unclear to date. METHODS An epidemiological nationwide survey of LPI patients was carried out via mail to all domestic university and general hospitals in Japan. Next, the clinical information for each LPI patient was obtained, in the form of a questionnaire, from the attending physicians who replied to the letters. RESULTS We received answered questionnaires for 43 LPI patients in 19 hospitals. We selected 35 patients who were genetically diagnosed with LPI. The most common clinical manifestations were with protein aversion, ferritinemia, increased serum lactate dehydrogenase, and hyperammonemia. The most frequent SLC7A7 mutation in Japanese LPI patients is p.R410*, which is a founder effect mutation in northern Japan. In total, nine types of mutation were detected in this survey, six of which (p.R410*, p.S238F, c.1630delC, p.S489P, c.1673delG, and IVS3-IVS5del9.7 kb) have not been reported in other countries. CONCLUSION The clinical and genetic features of 35 Japanese patients with LPI were characterized, and no correlation between genotype and phenotype was observed. The importance of early diagnosis for better prognosis of LPI is emphasized.
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Affiliation(s)
- Atsuko Noguchi
- Department of Pediatrics, Akita University Graduate School of Medicine, Akita City, Akita, Japan.
| | - Kimitoshi Nakamura
- Department of Pediatrics, Kumamoto University Hospital, Kumamoto City, Kumamoto, Japan
| | - Kei Murayama
- Department of Metabolism, Chiba Children's Hospital, Chiba City, Chiba, Japan
| | - Shigenori Yamamoto
- Department of Pediatrics, Chiba University Hospital, Chiba City, Chiba, Japan
| | - Hiroshi Komatsu
- Department of Pediatrics, National Hospital Organization Maizuru Medical Center, Maizuru City, Kyoto, Japan
| | - Rika Kizu
- Department of Pediatrics, Yokosuka Kyosai Hospital, Yokosuka City, Kanagawa, Japan
| | - Masaki Takayanagi
- Division of Emergency and General Medicine, Chiba Children's Hospital, Chiba City, Chiba, Japan
| | - Torayuki Okuyama
- National Center for Child Health and Development, Center of Lysosomal storage diseases, Setagaya, Tokyo, Japan
| | - Fumio Endo
- Department of Pediatrics, Kumamoto University Hospital, Kumamoto City, Kumamoto, Japan
| | | | - Yutaka Shoji
- Sakura Pediatric Clinics, Akita City, Akita, Japan
| | - Tsutomu Takahashi
- Department of Pediatrics, Akita University Graduate School of Medicine, Akita City, Akita, Japan
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Endo Y, Noguchi S, Hara Y, Hayashi Y, Motomura K, Murakami N, Tanaka S, Yamashita S, Kizu R, Bamba M, Goto Y, Miyatake S, Matsumoto N, Nonaka I, Nishino I. G.O.1. Neuromuscul Disord 2014. [DOI: 10.1016/j.nmd.2014.06.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Endo Y, Noguchi S, Hara Y, Hayashi YK, Motomura K, Miyatake S, Murakami N, Tanaka S, Yamashita S, Kizu R, Bamba M, Goto YI, Matsumoto N, Nonaka I, Nishino I. Dominant mutations in ORAI1 cause tubular aggregate myopathy with hypocalcemia via constitutive activation of store-operated Ca²⁺ channels. Hum Mol Genet 2014; 24:637-48. [PMID: 25227914 DOI: 10.1093/hmg/ddu477] [Citation(s) in RCA: 113] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The store-operated Ca(2+) release-activated Ca(2+) (CRAC) channel is activated by diminished luminal Ca(2+) levels in the endoplasmic reticulum and sarcoplasmic reticulum (SR), and constitutes one of the major Ca(2+) entry pathways in various tissues. Tubular aggregates (TAs) are abnormal structures in the skeletal muscle, and although their mechanism of formation has not been clarified, altered Ca(2+) homeostasis related to a disordered SR is suggested to be one of the main contributing factors. TA myopathy is a hereditary muscle disorder that is pathologically characterized by the presence of TAs. Recently, dominant mutations in the STIM1 gene, encoding a Ca(2+) sensor that controls CRAC channels, have been identified to cause tubular aggregate myopathy (TAM). Here, we identified heterozygous missense mutations in the ORAI1 gene, encoding the CRAC channel itself, in three families affected by dominantly inherited TAM with hypocalcemia. Skeletal myotubes from an affected individual and HEK293 cells expressing mutated ORAI1 proteins displayed spontaneous extracellular Ca(2+) entry into cells without diminishment of luminal Ca(2+) or the association with STIM1. Our results indicate that STIM1-independent activation of CRAC channels induced by dominant mutations in ORAI1 cause altered Ca(2+) homeostasis, resulting in TAM with hypocalcemia.
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Affiliation(s)
- Yukari Endo
- Department of Clinical Development, Translational Medical Center, National Center of Neurology and Psychiatry, Kodaira, Tokyo 187-8556, Japan Department of Neuromuscular Research and Department of Pediatrics, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan
| | - Satoru Noguchi
- Department of Clinical Development, Translational Medical Center, National Center of Neurology and Psychiatry, Kodaira, Tokyo 187-8556, Japan Department of Neuromuscular Research and
| | - Yuji Hara
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan Tokyo Women's Medical University Institute for Integrated Medical Sciences (TIIMS), Shinjuku, Tokyo 162-8666, Japan
| | - Yukiko K Hayashi
- Department of Clinical Development, Translational Medical Center, National Center of Neurology and Psychiatry, Kodaira, Tokyo 187-8556, Japan Department of Neuromuscular Research and Department of Neurophysiology, Tokyo Medical University, Tokyo 160-8402, Japan
| | - Kazushi Motomura
- Department of Clinical Development, Translational Medical Center, National Center of Neurology and Psychiatry, Kodaira, Tokyo 187-8556, Japan
| | - Satoko Miyatake
- Department of Human Genetics, Graduate School of Medicine, Yokohama City University, Yokohama 236-0004, Japan
| | - Nobuyuki Murakami
- Department of Pediatrics, Dokkyo Medical University, Koshigaya Hospital, Koshigaya, Saitama 343-8555, Japan
| | - Satsuki Tanaka
- Department of Diabetes and Endocrinology, Osaka Saiseikai Nakatsu Hospital, Osaka 530-0012, Japan
| | - Sumimasa Yamashita
- Division of Pediatric Neurology, Kanagawa Children's Medical Center (KCMC), Yokohama 232-8555, Japan
| | - Rika Kizu
- Division of Pediatrics, Yokosuka Kyosai Hospital, Yokosuka, Kanagawa 238-8558, Japan and
| | - Masahiro Bamba
- Division of Pediatrics, Kawasaki Municipal Hospital, Kawasaki, Kanagawa 210-0013, Japan
| | - Yu-Ichi Goto
- Department of Clinical Development, Translational Medical Center, National Center of Neurology and Psychiatry, Kodaira, Tokyo 187-8556, Japan Department of Mental Retardation and Birth Defect Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo 187-8502, Japan
| | - Naomichi Matsumoto
- Department of Human Genetics, Graduate School of Medicine, Yokohama City University, Yokohama 236-0004, Japan
| | | | - Ichizo Nishino
- Department of Clinical Development, Translational Medical Center, National Center of Neurology and Psychiatry, Kodaira, Tokyo 187-8556, Japan Department of Neuromuscular Research and
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Yasuhara J, Yamada Y, Hara K, Suhara R, Hattori Y, Yamaguchi T, Mizuno Y, Kizu R, Bamba M. Primary ciliary dyskinesia diagnosed on nasal mucosal biopsy in two newborns. Pediatr Int 2014; 56:258-61. [PMID: 24730627 DOI: 10.1111/ped.12268] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Revised: 08/19/2013] [Accepted: 09/27/2013] [Indexed: 11/27/2022]
Abstract
Primary ciliary dyskinesia (PCD) is a genetic disease that causes abnormalities in ciliary structure and/or function. Ciliated cells line the upper and lower respiratory tracts and the Eustachian tube. Impairment of mucus clearance at these sites leads to sinusitis, repeated pulmonary infections, bronchiectasis, and chronic otitis media. Situs inversus occurs randomly in approximately 50% of subjects with PCD. The triad of situs inversus, bronchiectasis and sinusitis is known as Kartagener syndrome. PCD is usually an autosomal recessive disease, but occasional instances of X-linked transmission have been reported. Specific diagnosis requires examination of ciliary function or structure on light and electron microscopy. Early diagnosis and respiratory management are important in order to prevent the development of bronchiectasis and deterioration in lung function. We report early diagnosis of PCD on nasal mucosal biopsy in two newborns who presented with prolonged respiratory distress and rhinorrhea.
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Affiliation(s)
- Jun Yasuhara
- Department of Pediatrics, Yokosuka Kyosai Hospital, Yokosuka, Japan
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Amano N, Hayashi M, Narumi S, Muroya K, Kizu R, Mochizuki H, Taniguchi Y, Matsuura H, Homma K, Hasegawa T. Comprehensive genetic analyses of primary adrenal failure without enzymatic defects. Int J Pediatr Endocrinol 2013. [PMCID: PMC3850492 DOI: 10.1186/1687-9856-2013-s1-p109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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10
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Jinno K, Urakami T, Horikawa R, Kawamura T, Kikuchi N, Kikuchi T, Kizu R, Kosaka K, Mizuno H, Mochizuki T, Nishii A, Ohki Y, Soneda S, Sugihara S, Tatematsu T, Amemiya S. Usefulness of insulin detemir in Japanese children with type 1 diabetes. Pediatr Int 2012; 54:773-9. [PMID: 22726205 DOI: 10.1111/j.1442-200x.2012.03687.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND This multicenter observational study was conducted to investigate the efficacy and safety of insulin detemir (detemir) for diabetes management in Japanese children and adolescents. METHODS Data from the Japanese Study Group of Insulin Therapy for Childhood and Adolescent Diabetes database were analyzed. Ninety children (32 boys, 58 girls; mean age, 11.9 ± 3.8 years) who transferred from a neutral protamine Hagedorn insulin or insulin glargine basal-bolus regimen to detemir basal-bolus therapy and who were observed for at least 12 months were identified. Clinical data obtained at 0, 3, 6, and 12 months were analyzed to determine the type of bolus insulin used, number and timing of detemir injections, detemir dose as a proportion of the total insulin dose, hemoglobin A1c (HbA1c), fasting blood glucose (FBG) and frequency of severe hypoglycemia. RESULTS Twelve months after switching to detemir, the detemir dose represented 39.8% of the total insulin dose, and 37.8% of patients were being treated with twice-daily injections. HbA1c and FBG were significantly reduced from baseline at 3 and 6 months but not at 12 months. Considering the seasonal HbA1c variation in the Japanese population, a separate analysis was performed using data for 65 children (21 boys, 44 girls; mean age, 11.6 ± 2.9 years) who switched to detemir during the winter. Subset analysis showed significant HbA1c reductions from baseline at all specified times. The incidence of severe hypoglycemia during detemir treatment was 4.4 episodes per 100 patient-years. CONCLUSIONS Detemir is an effective and safe basal insulin for diabetes management in Japanese children and adolescents.
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Affiliation(s)
- Kazuhiko Jinno
- Department of Pediatrics, West Japan Railway Company Hiroshima General Hospital, Hiroshima, Japan
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11
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Sugihara S, Ogata T, Kawamura T, Urakami T, Takemoto K, Kikuchi N, Takubo N, Tsubouchi K, Horikawa R, Kobayashi K, Kasahara Y, Kikuchi T, Koike A, Mochizuki T, Minamitani K, Takaya R, Mochizuki H, Nishii A, Yokota I, Kizaki Z, Mori T, Shimura N, Mukai T, Matsuura N, Fujisawa T, Ihara K, Kosaka K, Kizu R, Takahashi T, Matsuo S, Hanaki K, Igarashi Y, Sasaki G, Soneda S, Teno S, Kanzaki S, Saji H, Tokunaga K, Amemiya S. HLA-class II and class I genotypes among Japanese children with Type 1A diabetes and their families. Pediatr Diabetes 2012; 13:33-44. [PMID: 22128760 DOI: 10.1111/j.1399-5448.2011.00833.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
OBJECTIVE To determine the HLA-DRB1, DQB1, DPB1, A, C, and B genotypes among Japanese children with autoimmune type 1 diabetes. METHODS Four hundred and thirty patients who were GADAb and/or IA-2Ab-positive (Type 1A) were recruited from 37 medical centers as part of a nationwide multicenter collaborative study. DNA samples from 83 siblings of the children with Type 1A diabetes and 149 parent-child trios were also analyzed. A case-control study and a transmission disequilibrium test (TDT) were then performed. RESULTS The susceptible and protective DRB1 and DQB1 alleles and haplotypes were confirmed. DPB1 alleles unique to the Japanese population and those common to multiple ethnic groups were also present. A linkage disequilibrium (LD) analysis showed both susceptible and protective haplotypes. The TDT did not reveal any alleles that were transmitted preferentially from the mother or father to children with Type 1A. Homozygosity for DRB1-09:01-DQB1-03:03 and heterozygosity for DRB1-04:05-DQB1-04:01 and DRB1-08:02-DQB1-03:02 were associated with an extremely high risk of Type 1A. A comparison of children with Type 1A and their parents and siblings suggested a dose effect of susceptible DRB1-DQB1 haplotypes and an effect of protective alleles on immunological pathogenesis. DRB1-09:01 appeared to be strongly associated with an early onset in preschool children with Type 1A diabetes. CONCLUSIONS This study demonstrated the characteristic association of HLA-class II and class I genes with Type 1A diabetes among Japanese children. A TDT did not reveal the genomic imprinting of HLA-class II and class I genes in Type 1A diabetes.
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Affiliation(s)
- Shigetaka Sugihara
- Department of Pediatrics, Tokyo Women's Medical University Medical Center East, Tokyo, Japan.
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12
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Nishimura G, Kizu R, Kijima Y, Sakai K, Kawaguchi Y, Kimura T, Matsushita I, Shirahama S, Ikeda T, Ikegawa S, Hasegawa T. Spondyloepiphyseal dysplasia Maroteaux type: report of three patients from two families and exclusion of type II collagen defects. Am J Med Genet A 2003; 120A:498-502. [PMID: 12884428 DOI: 10.1002/ajmg.a.20095] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Spondyloepiphyseal dysplasia (SED) Maroteaux type is an autosomal dominant skeletal dysplasia, characterized by spondylar dysplasia, mild epiphyseal dysplasia of the large joints, and type E-like brachydactyly. These manifestations overlap with those of spondyloperipheral dysplasia (SPD), in which a sporadic case with a mutation of COL2A1 has been reported. We report on three patients (an affected woman and her son and a sporadic case of an affected man) with SED Maroteaux type. The affected adults were severely short along with stubby hands and feet, and one developed myelopathy as a result of thoracolumbar gibbus. The affected child was mildly short at birth, and developed brachydactyly in early childhood. The radiological hallmarks of these patients included severe platyspondyly with square-shaped vertebral bodies, iliac hypoplasia, epiphyseal hypoplasia of the large joints, and strikingly short metacarpals and phalanges. These radiological findings appeared already apparent in early childhood. SED Maroteaux type was radiologically discriminative from SPD. Brachydactyly was much severe in the former than in the latter, and spondylar dysplasia manifestation was different between both disorders. Mutation screen by polymerase chain reaction-direct sequencing for all exons and their flanking regions of COL2A1 did not reveal any mutations in the three patients.
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Affiliation(s)
- Gen Nishimura
- Japanese Skeletal Dysplasia Consortium, Tokyo, Japan
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13
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Nakata Y, Nakayama T, Ide Y, Kizu R, Koinuma G, Bamba M. Measles virus genome detected up to four months in a case of congenital measles. Acta Paediatr 2003; 91:1263-5. [PMID: 12463330 DOI: 10.1080/080352502320777540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/30/2022]
Abstract
UNLABELLED To determine how long the measles virus genome was detected in a patient with congenital measles, the peripheral blood mononuclear cells were tested for 203 d. The measles virus genome was detected up to 140 d. CONCLUSION The period for which the measles virus genome was detected in this patient with congenital measles was much longer than in normal children with measles.
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Affiliation(s)
- Y Nakata
- Department of Pediatrics, Yokosuka Kyosai Hospital, Yokosuka, Japan.
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Hatanaka N, Yamazaki H, Kizu R, Hayakawa K, Aoki Y, Iwanari M, Nakajima M, Yokoi T. Induction of cytochrome P450 1B1 in lung, liver and kidney of rats exposed to diesel exhaust. Carcinogenesis 2001; 22:2033-8. [PMID: 11751436 DOI: 10.1093/carcin/22.12.2033] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
We have shown previously that diesel exhaust particle (DEP) extracts (DEPE) and 1-nitropyrene were genotoxically activated by human cytochrome P450 1B1 in SOS/umu assay. In this study, the in vivo induction of P450 family 1 enzymes in rats by exposure to diesel exhaust was investigated with regard to mRNA levels, P450 enzyme content, drug oxidation activities in the microsomes and umu gene expression of typical P450 substrates and DEPE itself catalyzed by the microsomes. Male Fischer 344 rats (4 weeks old) were exposed to 0.3 and 3.0 mg/m(3) DEP for 12 h per day for 4 weeks; the former dose corresponded to the typical daily airborne particle concentration. The levels of mRNA of rat P450 1B1 and P450 1A1 in the lung and liver were significantly increased 1.1-1.4-fold by exposure to 0.3 mg/m(3) DEP. Diesel exhaust particle extracts induced umu gene expression in Salmonella typhimurium TA1535/pSK1002 in the absence of a functional P450 system and were further activated by human recombinant P450 1B1. Using an O-acetyltransferase overexpressing Salmonella strain, genotoxic activation of P450 1B1 marker chemicals (1-nitropyrene, 1-aminopyrene and DEPE) by lung, liver and kidney microsomes was increased 1.7-4.2-, 1.4-1.5- and 1.0-1.3-fold, respectively, by exposure to 0.3 mg/m(3) DEP. Activation of 3-amino-1,4-dimethyl-5H-pyrido [4,3-b]indole (Trp-P-1; marker for P450 1A1) by lung microsomes and the P450 1A2 content in liver microsomes were slightly increased by exposure to 3.0 mg/m(3) DEP. This is the first report to suggest that typical daily contaminant levels (0.3 mg particle/m(3)) of diesel exhaust can induce P450 1B1 in rats and that the induced P450 1B1 may catalyze the genotoxic activation of DEP.
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Affiliation(s)
- N Hatanaka
- Faculty of Pharmaceutical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa 920-0934, Japan
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15
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Abstract
Eight nitroarenes, 1,3-, 1,6- and 1,8-dinitropyrenes, 1-, 2- and 4-nitropyrenes, 6-nitrochrysene and 2-nitrofluoranthene, in precipitation collected in Kanazawa were determined. The nitroarenes in the precipitation were concentrated onto solid phase extraction cartridges, and identified with high-performance liquid chromatography with chemiluminescence detection. The nitroarene concentrations in the precipitation were in the range 0.016-15 pmol/L, and the nitroarene composition tended to be the same as that in airborne particulates. 1-Nitropyrene in river water and seawater were also determined. 1-nitropyrene concentrations on the days after rain (19-110 fmol/L) were higher than those on the days before rain (4,11 fmol/L). Moreover, 1-nitropyrene concentrations in the river water were much lower than those in the precipitation, but were higher than those in the seawater. These results suggested that the nitroarenes in the precipitation and the river water came from airborne particulates.
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Affiliation(s)
- T Murahashi
- Japan Automobile Research Institute, Tsukuba-shi.
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16
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Tamai S, Tanaka Y, Kizu R, Ishii T, Muroya K, Sato S, Nishimura G, Matsuo N. Auxological and Radiological Manifestations of Patients with Hypochondroplasia Negative for N540K Mutation in Fibroblast Growth Factor Receptor 3 Gene. Clin Pediatr Endocrinol 2001. [DOI: 10.1297/cpe.10.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Shinya Tamai
- Department of Pediatrics, Keio University School of Medicine
| | - Yoko Tanaka
- Department of Pediatrics, Keio University School of Medicine
| | - Rika Kizu
- Department of Pediatrics, Keio University School of Medicine
| | - Tomohiro Ishii
- Department of Pediatrics, Keio University School of Medicine
| | - Koji Muroya
- Department of Pediatrics, Keio University School of Medicine
| | - Seiji Sato
- Department of Pediatrics, Keio University School of Medicine
| | | | - Nobutake Matsuo
- Department of Pediatrics, Keio University School of Medicine
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Yamazaki H, Hatanaka N, Kizu R, Hayakawa K, Shimada N, Guengerich FP, Nakajima M, Yokoi T. Bioactivation of diesel exhaust particle extracts and their major nitrated polycyclic aromatic hydrocarbon components, 1-nitropyrene and dinitropyrenes, by human cytochromes P450 1A1, 1A2, and 1B1. Mutat Res 2000; 472:129-38. [PMID: 11113705 DOI: 10.1016/s1383-5718(00)00138-8] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The genotoxicities of four samples of diesel exhaust particle (DEP) extracts (DEPE) and nine nitroarenes found in DEPE were investigated after activation catalyzed by human cytochrome P450 (P450) family 1 enzymes co-expressed with NADPH-cytochrome P450 reductase (NPR) in Escherichia coli membranes. The DEPE samples induced umu gene expression in Salmonella typhimurium TA1535/pSK1002 without any P450 system and were further activated by human P450 1B1/NPR membranes. Moderate activation of the DEPE sample by P450 1A2/NPR membranes was also observed, but not by either P450 1A1/NPR or NPR membranes. 1-Nitropyrene (1-NP) was strongly activated by human P450 1B1/NPR membranes. 1,8-Dinitropyrene (1,8-DNP) was most highly activated by P450 1A1 and 1B1 systems for the three DNPs tested. In contrast, 1, 3-DNP was inactivated by P450 1A1/NPR, 1A2/NPR, and 1B1/NPR systems and slightly activated by NPR membranes. 2-Nitrofluoranthene (2-NF) and 3-nitrofluoranthene (3-NF) showed activities similar to 1-NP after bioactivation by P450 1B1/NPR membranes. However, the genotoxicities of 6-nitrochrysene, 7-nitrobenz[a]anthracene, and 6-nitrobenzo[a]pyrene were all weak in the present assay system. Apparent genotoxic activities of DEPE were very low compared with standard nitroarenes in the presence of P450s, possibly because unknown component(s) of DEPE had inhibitory effects on the bioactivation of 1-NP and 1,8-DNP catalyzed by human P450 1B1. These results suggest that environmental chemicals existing in airborne DEP, in addition to 1-NP, 1,6-DNP, 1,8-DNP, 2-NF, and 3-NF, can be activated by human P450 1B1. Biological actions of air pollutants such as nitroarenes to human extrahepatic tissues may be of concern in tissues in which P450 1B1 is expressed.
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Affiliation(s)
- H Yamazaki
- Division of Drug Metabolism, Faculty of Pharmaceutical Sciences, Kanazawa University, 13-1 Takara-machi, 920-0934, Kanazawa, Japan
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18
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Takayama N, Tanaka S, Kizu R, Hayakawa K. High-performance liquid chromatography study on effects of permanent wave, dye and decolorant treatments on methamphetamine and amphetamine in hair. Biomed Chromatogr 1999; 13:257-61. [PMID: 10416056 DOI: 10.1002/(sici)1099-0801(199906)13:4<257::aid-bmc830>3.0.co;2-v] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Black hairs that had been removed from a methamphetamine (MA) addict were treated with permanent wave, dye or decolorant liquids, and MA and amphetamine (AP) were quantified by a high-performance liquid chromatography/chemiluminescence detection method. The concentrations of MA and AP in the hair decreased significantly in all cases. Both MA and AP were stable in the permanent wave treatments, but not stable in the dye or decolorant treatments. As possible reasons for the decrease, the elution of MA and AP from hair in the permanent wave treatment, and the degradation of MA and AP in the dye or decolorant treatments might be considered. These results suggested that treatments of hair with permanent wave, dye or decolorant liquids interfered with determination of MA and AP in hair.
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Affiliation(s)
- N Takayama
- Forensic Science Laboratory, Ishikawa Prefectural Police Headquarters, Kanazawa, Japan
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19
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Kizu R, Nakanishi T, Hayakawa K, Matsuzawa A, Eriguchi M, Takeda Y, Akiyama N, Tashiro T, Kidani Y. A new orally active antitumor 1R,2R-cyclohexanediamine-platinum(IV) complex: trans-(n-valerato)chloro(1R,2R-cyclohexanediamine) (oxalato)platinum(IV). Cancer Chemother Pharmacol 1999; 43:97-105. [PMID: 9923814 DOI: 10.1007/s002800050869] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE The authors have previously reported that trans-bis(n-valerato)(1R,2R-cyclohexanediamine) (oxalato)platinum(IV) (C5-OHP), an oxaliplatin derivative, is an orally active antitumor agent in an intraperitoneal (i.p.) L1210 murine leukemia model. In this study, several oxaliplatin derivatives of the general formula trans-(carboxylato)chloro(1R,2R-cyclohexanediamine)(oxala to)platinum(IV) were synthesized in order to find new derivatives with greater oral activity than C5-OHP in a clinically predictive tumor model. In the formula, the carboxylate and chloride ligands are situated in axial positions. METHOD Four complexes with the axial carboxylate ligands n-butyrate, n-valerate, n-caproate or n-heptanoate were synthesized and designated C4-OHP-Cl, C5-OHP-Cl, C6-OHP-Cl and C7-OHP-Cl, respectively. The oral antitumor activity of the complexes was evaluated against the murine reticulosarcoma M5076 implanted subcutaneoulsy (s.c.) in to male BDF1 mice. The complexes were administered orally daily for 5 days in two cycles initiated on days 5 and 12 postimplantation. The physicochemical properties were examined by measuring the concentrations of the complexes in test solutions at intervals by HPLC. The pharmacokinetic behaviors of C5-OHP-Cl, C6-OHP-Cl and C5-OHP following a single oral administration were studied in non-tumor-bearing male BDFl mice. RESULTS Of the complexes synthesized in this study, C5-OHP-Cl, which exhibited high activity in the i.p. L1210 model, was found to be orally active in the s.c. M5076 model while C5-OHP was not. The in vitro reduction of the complexes by ascorbate was much more rapid than that of C5-OHP, while the complexes were more stable than C5-OHP in HCl-acidic and alkaline solutions. Pharmacokinetic study showed that Cmax and AUC0 24h values of plasma total and filterable platinum of C5-OHP-Cl were four to six times greater than those of C5-OHP, indicating that C5-OHP-Cl was absorbed more than C5-OHP. CONCLUSION C5-OHP-Cl was found to be a superior 1-OHP derivative C5-OHP, exhibiting significant oral antitumor activity in the s.c. M5076 model. The enhanced activity of C5-OHP-Cl was considered to be due in part to increased susceptibility to reduction and increased gastrointestinal absorption. C5-OHP-Cl is a suitable candidate for further study as an oral cancer chemotherapy agent.
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Affiliation(s)
- R Kizu
- Faculty of Pharmaceutical Sciences, Kanazawa University, Japan
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Kizu R, Nakanishi T, Yamamoto S, Hayakawa K, Matsuzawa A, Eriguchi M, Takeda Y, Akiyama N, Kidani Y. Significance of water solubility in the gastrointestinal absorption of trans-bis(n-valerato)(1R,2R-cyclohexanediamine)(oxalato)platinum(IV), an orally active antitumor platinum complex, and its analogs. Anticancer Drugs 1998; 9:167-74. [PMID: 9510503 DOI: 10.1097/00001813-199802000-00008] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Trans-bis(n-valerato)(1R,2R-cyclohexanediamine)(oxalato++ +)platinum(IV) (C5-OHP) is an orally active platinum complex we prepared. The gastrointestinal absorption of C5-OHP was examined in rats and compared with those of C5-OHP analogs which have a general formula of trans-bis(n-OCOCnH2n+1)(1R,2R-cyclohexanediamine)(oxalato )platinum(IV) as well as C5-OHP. The complexes did not show significant differences in pharmacokinetic behavior after i.v. injection. Plasma platinum level after a single oral administration at a dose was higher for a complex with higher water solubility. The intestinal absorption rate measured by an in situ recirculating perfusion technique was higher for a complex with higher lipophilicity. These results indicate that the water solubility is a more dominant factor than the lipophilicity in the gastrointestinal absorption of the complexes. Then, the effects of surfactants and alpha-cyclodextrin (alpha-CD) on the solubility of C5-OHP was studied. Among the agents tested, alpha-CD showed the highest effect in increasing the solubility. Administration of C5-OHP together with alpha-CD gave approximately three times higher plasma platinum levels than administration of C5-OHP alone. Water solubility was found to be a dominant factor in the gastrointestinal absorption of C5-OHP and its analogs.
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Affiliation(s)
- R Kizu
- Faculty of Pharmaceutical Sciences, Kanazawa University, Japan
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Hayakawa K, Nakamura A, Terai N, Kizu R, Ando K. Nitroarene concentrations and direct-acting mutagenicity of diesel exhaust particulates fractionated by silica-gel column chromatography. Chem Pharm Bull (Tokyo) 1997; 45:1820-2. [PMID: 9396159 DOI: 10.1248/cpb.45.1820] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Diesel exhaust particulates were extracted with benzene-ethanol (3:1, v/v) and separated into five fractions by silica-gel column chromatography. Direct-acting mutagenic activity was assayed by the Ames test using the Salmonella typhimurium YG1024 strain. The total activity of five fractions was about four times greater than that of the crude extract, suggesting that the activities in the fractions were suppressed in the crude extract. Strong activity was observed in fraction 4 which was eluted with dichloromethane (61.5% of the total activity) and fraction 5 which was eluted with ethanol (35.3%). Nitropolycyclic aromatic hydrocarbons (NPAHs) were determined by high-performance liquid chromatography with chemiluminescence detection. They were found mainly in fraction 4, although one NPAH was in fraction 3 which was eluted with n-hexane-dichloromethane (3:1, v/v). Based on these results, 53.1% of the activity in fraction 4 was attributed to NPAHs. The contribution of 1-nitropyrene and 1,3-, 1,6- and 1,8-dinitropyrenes was great and that of the other NPAHs was small. The mutagenic compound in fraction 5 was not identified. Fractions 1 and 2, which were eluted with n-hexane, and fraction 3 suppressed the activity of fraction 4. Polycyclic aromatic hydrocarbons in fractions 2 and 3 were considered as possible suppressors of NPAHs.
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Affiliation(s)
- K Hayakawa
- Faculty of Pharmaceutical Sciences, Kanazawa University, Japan
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22
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Eriguchi M, Osada I, Fujii Y, Takeda Y, Yoshizaki I, Akiyama N, Yanagie H, Sekiguchi M, Kizu R, Matsushita H, Mathé G. Pilot study for preoperative administration of l-OHP to patients with advanced scirrhous type gastric cancer. Biomed Pharmacother 1997; 51:217-20. [PMID: 9247019 DOI: 10.1016/s0753-3322(97)81599-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
A new DACH platinum complex, l-OHP, was developed by Kidani as an anticancer agent. A clinical trial took place in Europe which demonstrated its therapeutic efficacy for colorectal cancer. An effective treatment, especially chemotherapy for patients with a advanced scirrhous type gastric cancer, has not yet been established. An in vitro study showed that l-HOP inhibited cell growth in human gastric cancer cell lines. Our pilot study determined the efficacy of preoperative administration of l-OHP, 67 mg/m2 to 100 mg/m2, every 2-3 weeks, for two to three cycles, in five patients with this disease (Stage III and IV) roentogenoscopically and histologically. The platinum concentration in the tissues was also measured. By X-ray examination of the stomach at the time of pre- and post-administration of l-OHP, extension of the lesional gastric wall was observed. Histologically three Grade 2 responses and two Grade 1a responses were obtained according to the criteria presented by Japanese Research Society for Gastric Cancer. The mean platinum concentrations in the lesional tissues were 0.98 ppm and 0.5 ppm in the patients administered l-OHP for three and two cycles respectively. There was no toxicity that prevented surgery. These preliminary results showed the possibility that 1-OHP would be effective for patients with advanced scirrhous type gastric cancer as a neoadjuvant therapy.
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Affiliation(s)
- M Eriguchi
- Department of Surgery, University of Tokyo, Japan
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23
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Kizu R, Nakanishi T, Miyazaki M, Tashiro T, Noji M, Matsuzawa A, Eriguchi M, Takeda Y, Akiyama N, Kidani Y. An orally active antitumor cyclohexanediamine-Pt(IV) complex: trans,cis,cis-bis(n-valerato)(oxalato)(1R,2R-cyclohexane diamine)Pt(IV). Anticancer Drugs 1996; 7:248-56. [PMID: 8791997 DOI: 10.1097/00001813-199605000-00003] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
In order to develop orally active antitumor platinum complexes, several cyclohexanediamine-Pt(IV) complexes of a general formula trans,cis,cis-[Pt(IV) (OCOCnHn+1)2 (oxalato)(1R,2R-cyclohexanediamine)] were synthesized by derivatizing oxaliplatin [Pt(II)(oxalato)(1R,2R-cyclohexanediamine), I-OHP], which is a potent antitumor cyclohexanediamine-Pt(II) complex we have prepared and now undergoing clinical trials. The I-OHP derivatives were found to be stable, lipophilic and reduced to yield I-OHP, an active species, quantitatively by ascorbate in vitro. All the derivatives were antitumor active against mouse lymphocytic leukemia L1210 when given i.p. In particular, trans-bis-valerato-oxalato-1R,2R-dach-Pt(IV), C5-OHP, showed markedly high activity. C5-OHP also exhibited significant antitumor activity against L1210 when orally administered. C5-OHP was considered to be a suitable candidate for the oral cancer chemotherapy agent to be developed.
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Affiliation(s)
- R Kizu
- Faculty of Pharmaceutical Sciences, Kanazawa University, Japan
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Kizu R, Yamamoto T, Yokoyama T, Tanaka M, Miyazaki M. A sensitive postcolumn derivatization/UV detection system for HPLC determination of antitumor divalent and quadrivalent platinum complexes. Chem Pharm Bull (Tokyo) 1995; 43:108-14. [PMID: 7895301 DOI: 10.1248/cpb.43.108] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A sensitive postcolumn derivatization/UV detection system has been developed for HPLC analysis of antitumor divalent and quadrivalent platinum complexes. It is based on the derivatization of platinum complexes by reaction with sodium bisulfite to corresponding product(s) which has enhanced absorptivity at 280-300 nm. Platinum complexes examined in this study were cisplatin, carboplatin and oxaliplatin (divalent platinum complexes) and oxoplatin and tetraplatin (quadrivalent ones). The proposed detection system was sensitive to all these complexes. Under the detection conditions optimized for individual complexes, the HPLC gave linear relationships between the complex concentration and the peak height. Detection limits at 290 nm with 100 microliters injection were 20 nM for cisplatin, 40 nM for oxoplatin, 60 nM for carboplatin and tetraplatin and 100 nM for oxaliplatin (S/N = 3 at 0.005 AUFS). The proposed system was successfully applied for the determination of cisplatin and oxoplatin in plasma and urine. Pharmacokinetic behavior of oxoplatin and its reduced product cisplatin following a single intravenous injection of oxoplatin in rabbits has been discussed.
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Affiliation(s)
- R Kizu
- Faculty of Pharmaceutical Sciences, Kanazawa University 13-1, Japan
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Abstract
Anthramycin and tomaymycin are potent antitumor antibiotics belonging to the pyrrolo[1,4]-benzodiazepine [P[1,4]B] group. Their potent biological effects are thought to be due to their ability to react with DNA within the minor groove, forming covalent adducts through the N2 of guanine with the drug molecules overlapping with a 3-4 bp region. In spite of their small molecular weights, the P[1,4]B's show a surprising degree of sequence selectivity, with 5'-PuGPu sequences being the most reactive and 5'-PyGPy sequences being the least reactive [Hertzberg, R. P., Hecht, S. M., Reynolds, V. L., Molineux, I. J., & Hurley, L. H. (1986) Biochemistry 25, 1249-1258]. It has been proposed that inherent DNA flexibility may be one important component of the sequence recognition process for P[1,4]B bonding to DNA, and in this regard, molecular modeling studies are reflective of the experimentally determined hierarchy of bonding sequences [Zakrzewska, K., & Pullman, B. (1986) Biomol. Struct. Dyn. 4, 127-136]. In this study, we have used chemical and enzymatic probes (hydroxyl radical, DNase I) to evaluate drug- and sequence-dependent changes in DNA-adduct conformation, gel electrophoresis to measure drug-induced bending in DNA, and HPLC to measure the reaction kinetics of anthramycin bonding to different sequences. The results show that tomaymycin bonding to DNA induces greater conformational changes in the DNA (i.e., bending and associated narrowing of the minor groove) than anthramycin. In addition, we find that within each drug species (i.e., tomaymycin or anthramycin), sequence specificity correlates with the degree of bending and reaction kinetics such that those sequences with the highest sequence selectivity produce more bending of DNA and react faster with DNA and vice versa. On the basis of these results, we propose that sequence-dependent conformational flexibility may be an important factor in determining the hierarchy of bonding sequences for the P[1,4]B's.
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Affiliation(s)
- R Kizu
- Drug Dynamics Institute, College of Pharmacy, University of Texas, Austin 78712
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Kizu R, Kaneda M, Yamauchi Y, Miyazaki M. Determination of auranofin, a chrysotherapy agent, in urine by HPLC with a postcolumn reaction and visible detection. Chem Pharm Bull (Tokyo) 1993; 41:1261-5. [PMID: 8374995 DOI: 10.1248/cpb.41.1261] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Auranofin [(2,3,4,6-tetra-O-acetyl-1-thio-beta-D-glucopyranosato-S) (triethylphosphine)gold(I): AF] is a unique orally active chrysotherapy agent. A HPLC method has been developed for determining AF in urine. The proposed method comprises initial chromatographic separation of AF followed by on-line decomposition by potassium iodide with a released mercapto group undergoing a color-developing reaction with 5,5'-dithiobis(2-nitrobenzoic acid). An aliquot (100 microliters) of a urine sample was chromatographed on a YMC AM-302 octadecylsilica column (4.6 mm i.d. x 15 cm, ambient) with a water-methanol (35:65) eluent delivered at a flow rate of 1 ml/min. A reagent solution for a postcolumn reaction comprised of 50 microM 5,5'-dithiobis(2-nitrobenzoic acid), 0.3 M potassium iodide and a 50 mM phosphate buffer (pH 7.4), was delivered at a flow rate of 0.5 ml/min. The postcolumn reactor consisted of a poly(tetrafluoroethylene) tube (0.5 mm i.d. x 5 m) at 60 degrees C. Detection wavelength was 412 nm. The identity of the AF peak was confirmed by a 3-dimensional chromatogram as well as by atomic absorption spectrophotometric analysis of gold in the column effluent. Under the conditions described above, a linear relationship was obtained between peak height and AF concentration in the range 0.1 to 10 microM, with a correlation coefficient of 0.999. The detection limit was 50 nM (S/N = 3 at 0.005 AUFS) and the reproducibility was within 4% for 5 determinations. The AF concentrations in the urine of a rabbit given AF intraperitoneally were determined.
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Affiliation(s)
- R Kizu
- Faculty of Pharmaceutical Sciences, Kanazawa University, Japan
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Kizu R, Higashi S, Kidani Y, Miyazaki M. Pharmacokinetics of (1R,2R-diaminocyclohexane)oxalatoplatinum(II) in comparison with cisplatin following a single intravenous injection in rabbits. Cancer Chemother Pharmacol 1993; 31:475-80. [PMID: 8453687 DOI: 10.1007/bf00685038] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The pharmacokinetics of (1R,2R-diaminocyclohexane)oxalatoplatinum(II) (1-OHP, NSC-266046), a second-generation antitumor platinum complex, was studied in rabbits and compared with that of cisplatin. The rabbits were given a single i.v. dose of 1-OHP or cisplatin (10 mumol/kg). A comparison of tissue platinum levels at 24 h postinjection showed that platinum levels were lower in the eight organs examined, which included the kidney and liver, after the injection of 1-OHP than following cisplatin administration. Plasma-decay profiles of three platinum species, that is, the unchanged species, filterable platinum, and total platinum, were examined. Plasma levels of the unchanged species and filterable platinum for 1-OHP declined more rapidly than those for cisplatin. The ratio of plasma filterable-to-total platinum indicated that the protein-binding ability of 1-OHP was greater than that of cisplatin. As for urinary excretion, amounts of the unchanged species and total platinum excreted during the 24 h period postinjection were 28% and 76% of the dose for 1-OHP and 23% and 57% of the dose for cisplatin, respectively. The renal clearance of both the unchanged species and filterable platinum in plasma for 1-OHP was about 2-fold that for cisplatin. 1-OHP is reported to be much less nephrotoxic than cisplatin. This may be due in part to its pharmacokinetic behavior or to pharmacokinetic differences resulting from chemical reactions that make 1-OHP less toxic than cisplatin.
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Affiliation(s)
- R Kizu
- Faculty of Pharmaceutical Sciences, Kanazawa University, Japan
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Lee CS, Sun D, Kizu R, Hurley LH. Determination of the structural features of (+)-CC-1065 that are responsible for bending and winding of DNA. Chem Res Toxicol 1991; 4:203-13. [PMID: 1782349 DOI: 10.1021/tx00020a013] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Analysis of the anomalous migration in electrophoretic mobilities of (+)-CC-1065-modified oligomers following ligation reveals that (+)-CC-1065 induces DNA bending and winding of the helix. (+)-CC-1065 is a potent antitumor antibiotic produced by Streptomyces zelensis. This drug selectively bonds covalently to N3 of adenine and lies in the minor groove of DNA, reacting in a highly sequence-selective manner. Structurally, (+)-CC-1065 consists of three subunits: two identical pyrroloindole units (subunits B and C) and a third subunit containing the DNA-reactive cyclopropane ring (subunit A). While the bonding reaction is the main determinant of DNA sequence selectivity of (+)-CC-1065, binding interactions between the inside edge substituents of the B and C subunits and the floor of the minor groove of DNA can modulate or fine tune this sequence selectivity, [Hurley, L. H., Lee, C.-S., McGovern, J. P., Mitchell, M. A., Warpehoski, M. A., Kelly, R. C., & Aristoff, P. A. (1988) Biochemistry 27, 3886-3892]. The A subunit of (+)-CC-1065 is responsible for the bending of DNA, and close van der Waals contacts between the inside edge of (+)-CC-1065 and the floor of the minor groove of DNA cause winding equivalent to about 1 base pair per alkylation site and stiffening of DNA. The magnitude of DNA bending induced by (+)-CC-1065 and related compounds is about 14-19 degrees, which is equivalent to that produced by an adenine-thymine tract of about 5-6 base pairs in length. Experiments using oligomers containing both an adenine tract and a unique (+)-CC-1065 bonding site approximately one helix turn apart demonstrate that the directionality of drug-induced bending is in toward the minor groove and the locus of bending is about 2-3 base pairs to the 5'-side of the covalently modified adenine. A circularization efficiency assay shows that the optimum size of circles produced by (+)-CC-1065 and related drugs is between 168 and 180 base pairs. These results are discussed in relation to the molecular basis of the DNA sequence selectivity of (+)-CC-1065, and the (+)-CC-1065-induced DNA bending is compared with the intrinsic bending associated with adenine tracts. Since (+)-CC-1065 induces effects on local DNA structure that appear similar to those produced naturally by adenine tracts and certain DNA binding proteins, the relevance of this phenomenon to biological effects of (+)-CC-1065 and related drugs is considered.
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Affiliation(s)
- C S Lee
- Drug Dynamics Institute, College of Pharmacy, University of Texas, Austin 78712
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Kizu R, Hayakawa K, Miyazaki M. HPLC determination of cis-diamminedichloroplatinum(II) in plasma and urine with UV detection and column-switching. Biomed Chromatogr 1989; 3:14-9. [PMID: 2706360 DOI: 10.1002/bmc.1130030105] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A method for determining cis-diamminedichloroplatinum(II) (CDDP), an anticancer drug, in plasma and urine by HPLC with UV detection and column-switching has been developed. Typical conditions were as follows. An apparatus was composed of two columns, two pumps, a UV detector, a sample injector with a 100 microL loop, a switching valve, a column oven and a recorder. A Rheodyne model 7125 sample injector was used as the switching valve. A precolumn (4.6 mm ID x 25 cm) was packed with MCI GEL CK10S (a strong cation exchanger), and an analytical column (4.6 mm ID x 5 cm) was packed with MCI GEL CDR10 (a strong anion exchanger). Both columns were connected in series via the switching valve. The CDDP-containing fraction of the effluent from the precolumn was loaded to the analytical column by column-switching and the effluent from the analytical column was monitored at 210 nm. An eluent of 0.3 M sodium dihydrogen phosphate was pumped at a flow rate of 1 mL/min and the columns were maintained at 40 degrees C. CDDP was eluted at about 11 min and the identity of the peak of CDDP on the chromatogram was confirmed by its 3-dimensional chromatogram and analysis of platinum in the column effluent. Under the conditions described above, a linear relationship was obtained between peak height and concentration of CDDP up to 100 microM. Correlation efficients were 0.998 for plasma and 0.999 for urine. The detection limit was 0.1 microM for CDDP in both plasma and urine (S/N = 3,0.005 AUFS). The reproducibility was within 3% for 10 determinations.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- R Kizu
- Faculty of Pharmaceutical Sciences, Kanazawa University, Japan
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Kizu R, Higashi S, Miyazaki M. A method for determining cis-dichlorodiammineplatinum(II) in plasma and urine by high performance liquid chromatography with direct ultraviolet detection. Chem Pharm Bull (Tokyo) 1985; 33:4614-7. [PMID: 4092275 DOI: 10.1248/cpb.33.4614] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Hayakawa K, Wakatsuki M, Yamada E, Shimizu K, Kizu R, Miyazaki M. Effects of pH and ligands on the metals-catalyzed hydrolysis of clioquinol conjugates. Chem Pharm Bull (Tokyo) 1984; 32:3205-9. [PMID: 6240322 DOI: 10.1248/cpb.32.3205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Kizu R, Ikeda T, Hayakawa K, Miyazaki M. Studies on metal-catalyzed hydrolyses of clioquinol conjugates in the rabbit body following intravenous injection of Cu(II)- or Fe(III)-gluconic acid complex system. Chem Pharm Bull (Tokyo) 1984; 32:3210-5. [PMID: 6240323 DOI: 10.1248/cpb.32.3210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Hayakawa K, Imanari T, Asazuma S, Kizu R, Miyazaki M. Fractional analysis of zinc in rabbit plasma. Chem Pharm Bull (Tokyo) 1979; 27:2849-51. [PMID: 527151 DOI: 10.1248/cpb.27.2849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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