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Maeda K, Hosoda N, Fukumoto J, Kawai S, Hayafuji M, Tsuboi H, Fujita S, Ichino N, Osakabe K, Sugimoto K, Ishihara N. Association of Scalp High-Frequency Oscillation Detection and Characteristics With Disease Activity in Pediatric Epilepsy. J Clin Neurophysiol 2023:00004691-990000000-00106. [PMID: 37934062 DOI: 10.1097/wnp.0000000000001052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2023] Open
Abstract
INTRODUCTION High-frequency oscillation (HFO) in scalp electroencephalography is a promising new noninvasive prognostic epilepsy biomarker, but further data are needed to ascertain the utility of this parameter. The present work investigated the association between epileptic activity and scalp HFO in pediatric patients with various types of epilepsy, using multivariable regression models to correct for possible confounding factors. METHODS The authors analyzed 97 subjects who were divided into groups with active epilepsy (within 1 year of seizure), seizure-free epilepsy (>1 year without seizure), and nonepilepsy. Regarding the frequency of seizure occurrence as an indicator of epileptic activity, we categorized subjects into four groups (Daily/Weekly, Monthly, Yearly, and Rarely). RESULTS Multiple linear regression analysis showed that the scalp HFO detection rate was significantly higher in patients with active epilepsy than in those with nonepilepsy (β [95% confidence interval] = 2.77 [1.79-4.29]; P < 0.001). The association between scalp HFO detection rate and frequency of seizure occurrence was highest in the Daily/Weekly group (β [95% confidence interval] = 3.38 [1.57-7.27]; P = 0.002), followed by Monthly and Yearly groups (β [95% confidence interval] = 2.42 [1.02-5.73]; P = 0.046 and 0.36 [0.16-0.83]; P = 0.017). In addition, HFO duration, number of peaks, and number of channels detected were significantly higher in patients with active epilepsy. CONCLUSIONS Pediatric patients with active epilepsy and high frequency of seizure occurrence exhibited a higher scalp HFO detection rate. These results may help to establish HFO detectable by noninvasive scalp electroencephalography as a biomarker of active epilepsy in pediatric patients.
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Affiliation(s)
- Keisuke Maeda
- Department of Clinical Physiology, Fujita Health University School of Medical Sciences, Toyoake, Japan
| | - Nami Hosoda
- Department of Clinical Laboratory, Fujita Health University Hospital, Toyoake, Japan
| | - Junichi Fukumoto
- Department of Clinical Laboratory, Fujita Health University Hospital, Toyoake, Japan
| | - Shun Kawai
- Department of Clinical Laboratory, Fujita Health University Hospital, Toyoake, Japan
| | - Mizuki Hayafuji
- Department of Clinical Laboratory, Fujita Health University Hospital, Toyoake, Japan
| | - Himari Tsuboi
- Department of Clinical Laboratory, Fujita Health University Hospital, Toyoake, Japan
| | - Shiho Fujita
- Department of Clinical Laboratory, Fujita Health University Hospital, Toyoake, Japan
| | - Naohiro Ichino
- Department of Clinical Physiology, Fujita Health University School of Medical Sciences, Toyoake, Japan
| | - Keisuke Osakabe
- Department of Clinical Physiology, Fujita Health University School of Medical Sciences, Toyoake, Japan
| | - Keiko Sugimoto
- Department of Medical Sciences Education, Fujita Health University School of Medical Sciences, Toyoake, Japan; and
| | - Naoko Ishihara
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Japan
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Hattori Y, Yamada H, Munetsuna E, Fujii R, Ando Y, Yamazaki M, Mizuno G, Tsuboi Y, Ishihara Y, Ichino N, Sugimoto K, Osakabe K, Ishikawa H, Ohashi K, Suzuki K. The Ratio of miR-122 to miR-20a (miR-122/miR-20a) Is a Useful Minimally Invasive Biomarker for Non-Alcoholic Fatty Liver Disease Detection. Genet Test Mol Biomarkers 2023; 27:239-247. [PMID: 37643325 DOI: 10.1089/gtmb.2022.0155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/31/2023] Open
Abstract
Background: The increasing prevalence of non-alcoholic fatty liver disease (NAFLD) has become a global health problem. NAFLD has few initial symptoms and may be difficult to detect early, so there is need for a minimally invasive early detection marker. We hypothesized that miR-122 and miR-20a levels combined, as the miR-122/miR-20a ratio might detect NAFLD more sensitively. Methods: This study involved 167 participants with low alcohol intake. Those who had an increase in echogenicity of the liver parenchyma and hepato-renal contrast on ultrasonography were classified as the NAFLD group (n = 44), which was further classified into mild (n = 26) and severe (n = 18) groups based on echogenic intensity and hepatic vessel and diaphragm visualization. Participants without fatty liver were included in the normal group, except for those with an abnormal body mass index, glycated hemoglobin, and systolic blood pressure (n = 123) values. Serum miR-122 and miR-20a expression levels in participants were measured by real-time polymerase chain reaction, and the miR-122/miR-20a was calculated. Results: In the NAFLD group, miR-122 expression was significantly higher and the miR-20a was significantly lower than in the normal group, in agreement with previous studies. miR-122/miR-20a was also significantly higher in the NAFLD group. Receiver operating characteristic curve analysis was performed with miR-122/miR-20a as an NAFLD detection marker, and the area under the curve of miR-122/miR-20a was significantly larger than that of miR-122 or miR-20a alone. Conclusions: The miR-122/miR-20a ratio, combined with miR-122 and miR-20a levels, is a useful biomarker to detect NAFLD with high sensitivity.
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Affiliation(s)
- Yuji Hattori
- Department of Preventive Medical Sciences, Fujita Health University School of Medical Sciences, Toyoake, Japan
| | - Hiroya Yamada
- Department of Hygiene and Fujita Health University School of Medicine, Toyoake, Japan
| | - Eiji Munetsuna
- Department of Biochemistry, Fujita Health University School of Medicine, Toyoake, Japan
| | - Ryosuke Fujii
- Department of Preventive Medical Sciences, Fujita Health University School of Medical Sciences, Toyoake, Japan
| | - Yoshitaka Ando
- Department of Clinical Biochemistry, Fujita Health University School of Medical Science, Toyoake, Japan
| | - Mirai Yamazaki
- Department of Medical Technology, Kagawa Prefectural University of Health Sciences, Takamatsu, Japan
| | - Genki Mizuno
- Department of Medical Technology, Tokyo University of Technology School of Health Sciences, Ota, Japan
| | - Yoshiki Tsuboi
- Department of Preventive Medical Sciences, Fujita Health University School of Medical Sciences, Toyoake, Japan
| | - Yuya Ishihara
- Department of Preventive Medical Sciences, Fujita Health University School of Medical Sciences, Toyoake, Japan
| | - Naohiro Ichino
- Department of Clinical Physiology and Functional Imaging, Fujita Health University School of Medicine, Toyoake, Japan
| | - Keiko Sugimoto
- Department of Clinical Physiology and Functional Imaging, Fujita Health University School of Medicine, Toyoake, Japan
| | - Keisuke Osakabe
- Department of Clinical Physiology and Functional Imaging, Fujita Health University School of Medicine, Toyoake, Japan
| | - Hiroaki Ishikawa
- Department of Clinical Biochemistry, Fujita Health University School of Medical Science, Toyoake, Japan
| | - Koji Ohashi
- Department of Clinical Biochemistry, Fujita Health University School of Medical Science, Toyoake, Japan
| | - Koji Suzuki
- Department of Preventive Medical Sciences, Fujita Health University School of Medical Sciences, Toyoake, Japan
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Shimoda M, Kaneko K, Nakagawa T, Kawano N, Otsuka R, Ota A, Naito H, Matsunaga M, Ichino N, Yamada H, Chiang C, Hirakawa Y, Tamakoshi K, Aoyama A, Yatsuya H. Relationship Between Fasting Blood Glucose Levels in Middle Age and Cognitive Function in Later Life: The Aichi Workers' Cohort Study. J Epidemiol 2023; 33:76-81. [PMID: 34024876 PMCID: PMC9794446 DOI: 10.2188/jea.je20210128] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND There is limited evidence regarding the relationship between Diabetes mellitus (DM) in middle age and mild cognitive impairment after a follow-up. Therefore, we investigated the relationship between fasting blood glucose (FBG) levels in middle age and cognitive function assessed using the Japanese version of the Montreal Cognitive Assessment (MoCA-J) in later life, following over 15 years of follow-up in the Aichi Workers' Cohort Study in Japan. METHODS Participants were 253 former local government employees aged 60-79 years in 2018 who participated in a baseline survey conducted in 2002. Using baseline FBG levels and self-reported history, participants were classified into the normal, impaired fasting glucose (IFG) and, and DM groups. Total MoCA-J score ranges from 0 to 30, and cognitive impairment was defined as MoCA-J score ≤25 in this study. A general linear model was used to estimate the mean MoCA-J scores in the FBG groups, adjusted for age, sex, educational year, smoking status, alcohol consumption, physical activity, body mass index, systolic blood pressure, total cholesterol, and estimated glomerular filtration rate. RESULTS The mean MoCA-J score in the total population was 25.0, and the prevalence of MoCA-J score ≤25 was 49.0%. Multivariable-adjusted total MoCA-J scores were 25.2, 24.8, and 23.4 in the normal, IFG, and DM groups, respectively. The odds ratio of MoCA-J score ≤25 in the DM group was 3.29. CONCLUSION FBG level in middle age was negatively associated with total MoCA-J scores assessed later in life, independent of confounding variables.
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Affiliation(s)
- Masako Shimoda
- Department of Public Health and Health Systems, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kayo Kaneko
- Department of Occupational and Environmental Health, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan
| | | | | | - Rei Otsuka
- National Center for Geriatrics and Gerontology, Aichi, Japan
| | - Atsuhiko Ota
- Department of Public Health, Fujita Health University School of Medicine, Aichi, Japan
| | - Hisao Naito
- Department of Public Health, Fujita Health University School of Medicine, Aichi, Japan
| | - Masaaki Matsunaga
- Department of Public Health, Fujita Health University School of Medicine, Aichi, Japan
| | - Naohiro Ichino
- Department of Public Health, Fujita Health University School of Medicine, Aichi, Japan
| | - Hiroya Yamada
- Department of Public Health, Fujita Health University School of Medicine, Aichi, Japan
| | - Chifa Chiang
- Department of Public Health and Health Systems, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yoshihisa Hirakawa
- Department of Public Health and Health Systems, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Koji Tamakoshi
- Department of Nursing, Nagoya University School of Health Sciences, Nagoya, Japan
| | - Atsuko Aoyama
- Nagoya University of Arts and Sciences, Aichi, Japan
| | - Hiroshi Yatsuya
- Department of Public Health and Health Systems, Nagoya University Graduate School of Medicine, Nagoya, Japan,Department of Public Health, Fujita Health University School of Medicine, Aichi, Japan
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4
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Hattori Y, Yamada H, Munetsuna E, Ando Y, Mizuno G, Fujii R, Tsuboi Y, Ichino N, Osakabe K, Sugimoto K, Ishikawa H, Ohashi K, Suzuki K. Increased brain-derived neurotrophic factor in the serum of persons with nonalcoholic fatty liver disease. Endocr J 2022; 69:999-1006. [PMID: 35354697 DOI: 10.1507/endocrj.ej21-0584] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The increasing prevalence of nonalcoholic fatty liver disease (NAFLD) is a global health problem. In recent years, the inhibitory effect of brain-derived neurotrophic factor (BDNF) on diabetes mellitus and fatty liver has been clarified. The purpose of this study was to analyze the relationship between serum BDNF and NAFLD which caused by abnormal metabolism of glucose and lipids. This cross-sectional study involved 429 participants (mean age, 63.5 years: men, 38.5%) with low alcohol intake. Of the participants, those who had an increase in echogenicity of the liver parenchyma and hepato-renal contrast on ultrasonography were classified as the NAFLD group (n = 88), and the others were classified as the normal (n = 341) group. The NAFLD group was further classified into a mild group (n = 60) and a severe group (n = 28) based on the intensity of echogenicity and visualization of the hepatic vessels and diaphragm. Median BDNF levels were higher in the NAFLD group than the normal group (35.5 vs. 42.3 ng/mL, p < 0.01). Furthermore, BDNF levels tended to be associated with the severity of NAFLD (p < 0.01). In addition to the univariate analysis, in the sex- and age-adjusted model, there was a significant association between the BDNF levels and NAFLD severity (p < 0.01). The fully adjusted regression analysis also showed a positive association between the serum BDNF level and NAFLD (p < 0.01). These results suggest that NAFLD patients have a compensatory increase in circulating BDNF levels.
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Affiliation(s)
- Yuji Hattori
- Department of Preventive Medical Sciences, Fujita Health University School of Medical Sciences, Toyoake 470-1192, Japan
| | - Hiroya Yamada
- Department of Hygiene, Fujita Health University School of Medicine, Toyoake 470-1192, Japan
| | - Eiji Munetsuna
- Department of Biochemistry, Fujita Health University School of Medicine, Toyoake 470-1192, Japan
| | - Yoshitaka Ando
- Department of Clinical Biochemistry, Fujita Health University School of Medical Science, Toyoake 470-1192, Japan
| | - Genki Mizuno
- Department of Joint Research Laboratory of Clinical Medicine, Fujita Health University Hospital, Toyoake 470-1192, Japan
| | - Ryosuke Fujii
- Department of Preventive Medical Sciences, Fujita Health University School of Medical Sciences, Toyoake 470-1192, Japan
| | - Yoshiki Tsuboi
- Department of Preventive Medical Sciences, Fujita Health University School of Medical Sciences, Toyoake 470-1192, Japan
| | - Naohiro Ichino
- Department of Clinical Physiology and Functional Imaging, Fujita Health University School of Medicine, Toyoake 470-1192, Japan
| | - Keisuke Osakabe
- Department of Clinical Physiology and Functional Imaging, Fujita Health University School of Medicine, Toyoake 470-1192, Japan
| | - Keiko Sugimoto
- Department of Clinical Physiology and Functional Imaging, Fujita Health University School of Medicine, Toyoake 470-1192, Japan
| | - Hiroaki Ishikawa
- Department of Clinical Biochemistry, Fujita Health University School of Medical Science, Toyoake 470-1192, Japan
| | - Koji Ohashi
- Department of Clinical Biochemistry, Fujita Health University School of Medical Science, Toyoake 470-1192, Japan
| | - Koji Suzuki
- Department of Preventive Medical Sciences, Fujita Health University School of Medical Sciences, Toyoake 470-1192, Japan
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5
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Mizuno G, Yamada H, Munetsuna E, Yamazaki M, Ando Y, Fujii R, Tsuboi Y, Teshigawara A, Kageyama I, Osakabe K, Sugimoto K, Ishikawa H, Ichino N, Ohta Y, Ohashi K, Hashimoto S, Suzuki K. Association between the Extent of Peripheral Blood DNA Methylation of HIF3A and Accumulation of Adiposity in community-dwelling Women: The Yakumo Study. Endocr Res 2022; 47:130-137. [PMID: 36104828 DOI: 10.1080/07435800.2022.2121967] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
INTRODUCTION DNA methylation in the CpG sites of intron 1 of HIF3A is associated with body mass index (BMI). This cross-sectional study investigated correlations between DNA methylation of HIF3A and BMI or adiposity parameters in the Japanese population. METHOD DNA methylation of HIF3A was quantified via pyrosequencing. RESULT DNA methylation of HIF3A differed only in women; DNA methylation level at cg27146050 was associated with visceral adipose tissue thickness and correlated with BMI and percent (%) body fat after excluding smokers. CONCLUSION Peripheral blood DNA methylation at the CpG site (cg27146050) of HIF3A correlated with VAT thickness in Japanese women.
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Affiliation(s)
- Genki Mizuno
- Department of Preventive Medical Sciences, Fujita Health University School of Medical Sciences, Toyoake, Japan
- Department of Joint Research Laboratory of Clinical Medicine, Fujita Health University Hospital, Toyoake, Japan
| | - Hiroya Yamada
- Department of Hygiene, Fujita Health University School of Medicine, Toyoake, Japan
| | - Eiji Munetsuna
- Department of Biochemistry, Fujita Health University School of Medicine, Toyoake, Japan
| | - Mirai Yamazaki
- Department of Medical Technology, Kagawa Prefectural University of Health Sciences, Kagawa, Japan
| | - Yoshitaka Ando
- Department of Informative Clinical Medicine, Fujita Health University School of Medical Sciences, Toyoake, Japan
| | - Ryosuke Fujii
- Department of Preventive Medical Sciences, Fujita Health University School of Medical Sciences, Toyoake, Japan
| | - Yoshiki Tsuboi
- Department of Preventive Medical Sciences, Fujita Health University School of Medical Sciences, Toyoake, Japan
| | - Atsushi Teshigawara
- Department of Joint Research Laboratory of Clinical Medicine, Fujita Health University Hospital, Toyoake, Japan
| | - Itsuki Kageyama
- Department of Preventive Medical Sciences, Fujita Health University School of Medical Sciences, Toyoake, Japan
| | - Keisuke Osakabe
- Department of Clinical Physiology, Fujita Health University School of Medical Sciences, Toyoake, Japan
| | - Keiko Sugimoto
- Department of Clinical Physiology, Fujita Health University School of Medical Sciences, Toyoake, Japan
| | - Hiroaki Ishikawa
- Department of Informative Clinical Medicine, Fujita Health University School of Medical Sciences, Toyoake, Japan
| | - Naohiro Ichino
- Department of Clinical Physiology, Fujita Health University School of Medical Sciences, Toyoake, Japan
| | - Yoshiji Ohta
- Department of Chemistry, Fujita Health University School of Medicine, Toyoake, Japan
| | - Koji Ohashi
- Department of Informative Clinical Medicine, Fujita Health University School of Medical Sciences, Toyoake, Japan
| | - Shuji Hashimoto
- Department of Hygiene, Fujita Health University School of Medicine, Toyoake, Japan
| | - Koji Suzuki
- Department of Preventive Medical Sciences, Fujita Health University School of Medical Sciences, Toyoake, Japan
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6
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Fujii R, Ichino N, Osakabe K, Sugimoto K, Yamada H, Ando Y, Hishida A, Wakai K, Suzuki K, Kondo T. CD36 Polymorphism (rs1761667) Was Associated with Fatty Liver in a Japanese Population. Curr Dev Nutr 2020. [DOI: 10.1093/cdn/nzaa058_011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Objectives
Nonalcohol fatty liver disease (NAFLD) is one of the considerable health problems in the world. NAFLD is a representative phenotype in the liver reflecting individual's lifestyle. Previous studies suggested that a single nucleotide polymorphism (SNP) in the CD36 gene was associated with dietary fat intake and fat metabolism. Therefore, we hypothesized that this SNP may be associated with fatty liver (FL) and NAFLD. We conducted this cross-sectional study to examine the association between two CD36 polymorphisms (rs1761667 and rs1527483) and FL and NAFLD in a Japanese population.
Methods
A total of 525 local residents participated in the health check-up in Yakumo town, Hokkaido, Japan. This cross-sectional study was conducted based on clinical information collected in this health check-up. Among all participants, 57 people were excluded due to the inadequate informed consent, clinical history of liver disease. Genotyping of two polymorphisms in the CD36 gpgbrkkene was performed by using the PCR-CTPP method. Ultrasound examination was performed by four qualified ultrasonographers. In this present, NAFLD was defined as 1) presence of FL and 2) a daily alcohol consumption <10 g in women and <20 g in men. Multivariable regression analysis was performed after adjusting for age, sex, waist circumference, medicine for dyslipidemia.
Results
The mean age of participants was 63.4 (10.0). The minor allele frequency of rs1761667 and rs1527483 was 0.26 and 0.21, respectively. The presence of FL and NAFLD was 90 (19.2%) and 67 (14.3%), respectively. Multiple regression analyses showed a significant association between rs1761667 and presence of FL (P = 0.04), and FL grade (P = 0.03). However, rs1761667 was not significantly associated with NAFLD (P = 0.11). No significant associations were found between rs1527483 and FL and NAFLD.
Conclusions
A polymorphism (rs1761667) in the CD36 gene was associated with the presence of FL, but we did not find a significant association between this SNP and NAFLD.
Funding Sources
This study was supported by the Mishima Kaiun Memorial Foundation.
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Affiliation(s)
| | | | | | | | | | | | | | - Kenji Wakai
- Nagoya University Graduate School of Medicine
| | - Koji Suzuki
- Fujita Health University School of Medical Sciences
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7
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Mizutani Y, Kojima A, Takeuchi Y, Kusuki H, Sugimoto K, Osakabe K, Ichino N, Fujino M, Saito K, Miyata M, Sadanaga T, Hata T. Evaluation of perinatal autonomic development in infants using the QT/RR variability ratio. Fujita Med J 2020; 6:17-20. [PMID: 35111516 PMCID: PMC8766653 DOI: 10.20407/fmj.2019-006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 08/17/2019] [Indexed: 11/18/2022]
Abstract
OBJECTIVES Development of the autonomic nervous system may play a role in myocardial repolarization lability in infants, but its relationship to repolarization abnormalities remains unclear. Thus, the aim of the present study was to evaluate the relationship between gestational age and ventricular repolarization lability using the variability ratio (VR). METHODS Infants who underwent electrocardiography at a 1-month check-up were included (n=209; 125 males). Gestational age and the following four VR parameters at 1 month of age were compared: VR-I, SDQT/SDRR; VR-II, SDQT/rMSSD; VR-III, SDQTc/SDRR; and VR-IV, SDQTc/rMSSD; where SD, QTc, and rMSSD are standard deviation, QT interval corrected using Fridericia's formula, and root mean square difference of successive RR intervals, respectively. Twenty-eight preterm infants born at <37 weeks of gestation and 181 full-term infants were included. RESULTS Significant correlations were observed between gestational age and VR-I, -III, and -IV (all p<0.05). All VR values were significantly higher in preterm infants compared with full-term infants (I: 0.54 vs 0.48, II: 1.15 vs 0.96, III: 0.88 vs 0.68, IV: 1.59 vs 1.39; median, all p<0.05). CONCLUSION VR assessed at 1 month after birth was impaired in preterm infants, suggesting immaturity of their cardiac autonomic nervous system and ventricular myocardial repolarization.
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Affiliation(s)
- Yuri Mizutani
- Graduate School of Health Sciences, Fujita Health University,
Toyoake, Aichi, Japan,Department of Joint Research Laboratory of Clinical Medicine, Fujita Health
University Hospital, Toyoake, Aichi, Japan
| | - Arisa Kojima
- Department of Pediatrics, Fujita Health University, School of
Medicine, Toyoake, Aichi, Japan
| | - Yuka Takeuchi
- Graduate School of Health Sciences, Fujita Health University,
Toyoake, Aichi, Japan
| | - Hirofumi Kusuki
- Graduate School of Health Sciences, Fujita Health University,
Toyoake, Aichi, Japan
| | - Keiko Sugimoto
- Graduate School of Health Sciences, Fujita Health University,
Toyoake, Aichi, Japan
| | - Keisuke Osakabe
- Graduate School of Health Sciences, Fujita Health University,
Toyoake, Aichi, Japan
| | - Naohiro Ichino
- Graduate School of Health Sciences, Fujita Health University,
Toyoake, Aichi, Japan
| | - Masayuki Fujino
- Department of Joint Research Laboratory of Clinical Medicine, Fujita Health
University Hospital, Toyoake, Aichi, Japan
| | - Kazuyoshi Saito
- Department of Joint Research Laboratory of Clinical Medicine, Fujita Health
University Hospital, Toyoake, Aichi, Japan
| | - Masafumi Miyata
- Department of Joint Research Laboratory of Clinical Medicine, Fujita Health
University Hospital, Toyoake, Aichi, Japan
| | | | - Tadayoshi Hata
- Graduate School of Health Sciences, Fujita Health University,
Toyoake, Aichi, Japan,Department of Joint Research Laboratory of Clinical Medicine, Fujita Health
University Hospital, Toyoake, Aichi, Japan,Department of Pediatrics, Fujita Health University, School of
Medicine, Toyoake, Aichi, Japan
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8
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Ando Y, Yamazaki M, Yamada H, Munetsuna E, Fujii R, Mizuno G, Ichino N, Osakabe K, Sugimoto K, Ishikawa H, Ohashi K, Teradaira R, Ohta Y, Hamajima N, Hashimoto S, Suzuki K. Association of circulating miR-20a, miR-27a, and miR-126 with non-alcoholic fatty liver disease in general population. Sci Rep 2019; 9:18856. [PMID: 31827150 PMCID: PMC6906495 DOI: 10.1038/s41598-019-55076-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Accepted: 11/22/2019] [Indexed: 02/07/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is closely associated with obesity, metabolic syndrome, and type II diabetes mellitus. Recently, circulating microRNAs (miRNAs) have been proposed as useful disease biomarkers. We examined whether circulating miRNAs, such as miR-20a, miR-27a, and miR-126, were useful biomarkers for NAFLD. We conducted a cross-sectional analysis of 527 subjects aged 39 years or older who had undergone a health examination in the Yakumo Study. Of the residents, 92 were diagnosed with NAFLD using a registered medical sonographer. Serum miR-20a, miR-27a and miR-126 levels were measured by quantitative real-time PCR. We then calculated the odds ratios for serum miRNA level changes according to the severity of NAFLD using normal liver status as the reference group. Serum levels of miR-20a and 27a, but not miR-126, were significantly lower in NAFLD subjects than normal subjects. Serum miR-20a and miR-27a levels were significantly lower in both male and female severe NAFLD subjects. Logistic regression analysis showed a significant relationship between low circulating miR-20a and 27a levels and severe NAFLD. Down-regulated circulating miR-20a and 27a levels were significantly associated with severe NAFLD in the general population. Circulating miR-20a and miR-27a may be useful biomarkers for severe NAFLD.
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Affiliation(s)
- Yoshitaka Ando
- Department of Biomedical and Analytical Sciences, Fujita Health University School of Medical Sciences, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Mirai Yamazaki
- Department of Medical Technology, Kagawa Prefectural University of Health Sciences, 281-1, Murechohara, Takamatsu, Kagawa, 761-0123, Japan
| | - Hiroya Yamada
- Department of Hygiene, Fujita Health University School of Medicine, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan.
| | - Eiji Munetsuna
- Department of Biochemistry, Fujita Health University School of Medicine, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Ryosuke Fujii
- Department of Preventive Medical Sciences, Fujita Health University School of Medical Sciences, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Genki Mizuno
- Department of Joint Research Laboratory of Clinical Medicine, Fujita Health University Hospital, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Naohiro Ichino
- Department of Clinical Physiology and Functional Imaging, Fujita Health University School of Medical Sciences, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Keisuke Osakabe
- Department of Clinical Physiology and Functional Imaging, Fujita Health University School of Medical Sciences, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Keiko Sugimoto
- Department of Clinical Physiology and Functional Imaging, Fujita Health University School of Medical Sciences, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Hiroaki Ishikawa
- Department of Biomedical and Analytical Sciences, Fujita Health University School of Medical Sciences, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Koji Ohashi
- Department of Biomedical and Analytical Sciences, Fujita Health University School of Medical Sciences, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Ryoji Teradaira
- Department of Biomedical and Analytical Sciences, Fujita Health University School of Medical Sciences, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Yoshiji Ohta
- Department of Chemistry, Fujita Health University School of Medicine, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Nobuyuki Hamajima
- Department of Healthcare Administration, Nagoya University Graduate School of Medicine, 65, Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Shuji Hashimoto
- Department of Hygiene, Fujita Health University School of Medicine, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Koji Suzuki
- Department of Preventive Medical Sciences, Fujita Health University School of Medical Sciences, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan.
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9
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Fujii R, Ueyama J, Aoi A, Ichino N, Osakabe K, Sugimoto K, Suzuki K, Hamajima N, Wakai K, Kondo T. Oxidized human serum albumin as a possible correlation factor for atherosclerosis in a rural Japanese population: the results of the Yakumo Study. Environ Health Prev Med 2018; 23:1. [PMID: 29291718 PMCID: PMC5748967 DOI: 10.1186/s12199-017-0690-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 12/18/2017] [Indexed: 12/29/2022] Open
Abstract
Background The effect of the redox state of human serum albumin (HSA) on the antioxidant properties of the entire body has been a focus of recent research. The usefulness of HSA redox state as a biomarker for reducing oxidative stress has been investigated in clinical settings; however, evidence for its significance as a health index in non-clinical settings is yet to be established. This study aimed to examine the associations between HSA redox state and the atherosclerotic indices of carotid intima-media thickness (IMT) and plaque formation in a rural Japanese population. Methods We conducted a cross-sectional study as part of a health check-up program in the rural area of Hokkaido, Japan, at the end of August 2013. A total of 281 residents (124 men and 157 women) were included in the final analysis. Lifestyle-related data were obtained through a self-reported questionnaire, and ultrasound examinations were performed to measure IMT and determine plaque formation. The high-performance liquid chromatography postcolumn bromocresol green method was used to separate HSA into human nonmercaptalbumin and human mercaptalbumin (HMA). Results We found a significant negative relationship between the fraction of HMA [f(HMA)] and IMT (standardized β = − 0.132, p = 0.03). Moreover, f(HMA) was significantly associated with plaque formation (p < 0.01) with an odds ratio of 0.89 (95% confidence interval, 0.81–0.97) for every 10% increment in f(HMA). Conclusions We found that the HSA redox state, as determined by f(HMA), was associated with atherosclerotic indices in Japanese subjects. These results suggest that the HSA redox state indicates the risk of developing atherosclerosis.
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Affiliation(s)
- Ryosuke Fujii
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, 1-1-20 Daikominami, Higashi-ku, Nagoya, 461-8673, Japan
| | - Jun Ueyama
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, 1-1-20 Daikominami, Higashi-ku, Nagoya, 461-8673, Japan
| | - Arisa Aoi
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, 1-1-20 Daikominami, Higashi-ku, Nagoya, 461-8673, Japan
| | - Naohiro Ichino
- Department of Clinical Physiology, Fujita Health University School of Health Sciences, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, 470-1192, Japan
| | - Keisuke Osakabe
- Department of Clinical Physiology, Fujita Health University School of Health Sciences, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, 470-1192, Japan
| | - Keiko Sugimoto
- Department of Clinical Physiology, Fujita Health University School of Health Sciences, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, 470-1192, Japan
| | - Koji Suzuki
- Department of Public Health, Fujita Health University School of Health Sciences, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, 470-1192, Japan
| | - Nobuyuki Hamajima
- Department of Health Administration, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Kenji Wakai
- Department of Preventive Medicine, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Takaaki Kondo
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, 1-1-20 Daikominami, Higashi-ku, Nagoya, 461-8673, Japan.
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10
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Munetsuna E, Yamada H, Ando Y, Yamazaki M, Tsuboi Y, Kondo M, Mizuno G, Ishikawa H, Sugimoto K, Osakabe K, Ichino N, Ohashi K, Hamajima N, Suzuki K. Association of subcutaneous and visceral fat with circulating microRNAs in a middle-aged Japanese population. Ann Clin Biochem 2017; 55:437-445. [PMID: 28920467 DOI: 10.1177/0004563217735124] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Purpose It has been demonstrated that circulating microRNA profiles are affected by physiological conditions. Several studies have demonstrated that microRNAs play important roles in the regulation of adiposity. However, few have investigated the relationship between circulating microRNAs and obesity, which has become a major public health problem worldwide. This study investigated the association between circulating microRNAs and obesity in a Japanese population. Methods Obesity parameters, such as subcutaneous and visceral fat adipose tissue, body fat percentage, and body mass index were assessed in a cross-sectional sample of 526 participants who attended health examinations in Yakumo, Japan. In addition, five circulating microRNAs (miR-20a, -21, -27a, -103a, and -320), which are involved in adipocyte proliferation and differentiation, were quantified using real-time polymerase chain reaction amplification. Results We compared the circulating microRNA concentrations in a percentile greater than 75th (high) with below the value (low) of subcutaneous adipose tissue, visceral fat adipose tissue, body mass index, and per cent body fat. For visceral fat adipose tissue, significant decrease in miR-320 expression was observed in high group. Also, for body mass index, significant change of miR-20a, -27a, 103a, and 320 expression level was observed in high group. Multiple linear regression analysis demonstrated that circulating levels of some microRNA such as miR-27a were significantly associated with subcutaneous adipose tissue, visceral fat adipose tissue, and body mass index. Conclusions Our findings support the need for further studies to determine whether such changes are consistent across different populations and whether the identified microRNAs may represent novel biomarkers to predict the susceptibility and progression of obesity-related disorders.
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Affiliation(s)
- Eiji Munetsuna
- 1 Department of Biochemistry, Fujita Health University School of Medicine, Toyoake, Japan
| | - Hiroya Yamada
- 2 Department of Hygiene, Fujita Health University School of Medicine, Toyoake, Japan
| | - Yoshitaka Ando
- 3 Department of Joint Research Laboratory of Clinical Medicine, Fujita Health University Hospital, Toyoake, Japan
| | - Mirai Yamazaki
- 4 Department of Clinical Biochemistry, Fujita Health University School of Health Sciences, Toyoake, Japan
| | - Yoshiki Tsuboi
- 5 Department of Public Health, Fujita Health University School of Health Sciences, Toyoake, Japan
| | - Mari Kondo
- 5 Department of Public Health, Fujita Health University School of Health Sciences, Toyoake, Japan
| | - Genki Mizuno
- 4 Department of Clinical Biochemistry, Fujita Health University School of Health Sciences, Toyoake, Japan
| | - Hiroaki Ishikawa
- 4 Department of Clinical Biochemistry, Fujita Health University School of Health Sciences, Toyoake, Japan
| | - Keiko Sugimoto
- 6 Department of Clinical Physiology, Fujita Health University School of Health Sciences, Toyoake, Japan
| | - Keisuke Osakabe
- 6 Department of Clinical Physiology, Fujita Health University School of Health Sciences, Toyoake, Japan
| | - Naohiro Ichino
- 6 Department of Clinical Physiology, Fujita Health University School of Health Sciences, Toyoake, Japan
| | - Koji Ohashi
- 4 Department of Clinical Biochemistry, Fujita Health University School of Health Sciences, Toyoake, Japan
| | - Nobuyuki Hamajima
- 7 Department of Healthcare Administration, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Koji Suzuki
- 5 Department of Public Health, Fujita Health University School of Health Sciences, Toyoake, Japan
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11
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Ochi Y, Hashimoto S, Kawabe N, Murao M, Nakano T, Kan T, Nakaoka K, Ohki M, Kurashita T, Takamura T, Nomura S, Nishikawa T, Fukui A, Osakabe K, Ichino N, Yoshioka K. HLA-DQ gene polymorphisms are associated with hepatocellular carcinoma and hepatitis B surface antigen in chronic hepatitis B virus infection. Hepatol Res 2017; 47:755-766. [PMID: 27580643 DOI: 10.1111/hepr.12812] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [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: 07/03/2016] [Revised: 08/14/2016] [Accepted: 08/29/2016] [Indexed: 01/31/2023]
Abstract
AIM Genome-wide association studies have revealed that single nucleotide polymorphism (SNP) of human leukocyte antigen (HLA)-DQ is associated with the clearance of hepatitis B surface antigen (HBsAg) in acute hepatitis B virus (HBV) infection. We examined the effects of SNPs on the development of hepatocellular carcinoma (HCC) and markers of HBV in chronic HBV infection. METHODS The SNPs of HLA-DQ (rs2856718 and rs7453920) were determined in 299 patients with chronic HBV infection. RESULTS In 224 hepatitis B e antigen (HBeAg)-negative patients, those with rs2856718 genotype AG + GG had significantly lower hepatitis B core-related antigen levels (P = 0.0184), less frequent treatment with nucleotide/nucleoside analogs (NAs) (P = 0.0433), and less frequent HCC development (P = 0.0256) than those with genotype AA. Multivariate analysis selected age (P = 0.0460), platelet count (P = 0.0481), γ-glutamyl transpeptidase (P = 0.0030), and nucleotide/nucleoside analog treatment (P = 0.0003) as factors independently associated with HCC development. HBeAg-negative patients with rs7453920 genotype GG had significantly lower HBsAg levels (P < 0.0001), a higher prevalence of HBV genotype C (P = 0.0063), and a lower prevalence of the wild-type basal core promoter region (P = 0.0045) than those with genotype AA + AG. Multivariate analysis selected age (P < 0.0001), platelet count (P = 0.0021), HBV DNA levels (P = 0.0314), wild type of precore region (P = 0.0015), and rs7453920 (P < 0.0001) as factors independently associated with HBsAg levels. CONCLUSION This study revealed an association between rs2856718 and HCC development and an association between rs7453920 and HBsAg levels.
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Affiliation(s)
- Yuka Ochi
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, Toyoake, Japan
| | - Senju Hashimoto
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, Toyoake, Japan
| | - Naoto Kawabe
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, Toyoake, Japan
| | - Michihito Murao
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, Toyoake, Japan
| | - Takuji Nakano
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, Toyoake, Japan
| | - Toshiki Kan
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, Toyoake, Japan
| | - Kazunori Nakaoka
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, Toyoake, Japan
| | - Masashi Ohki
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, Toyoake, Japan
| | - Takamitsu Kurashita
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, Toyoake, Japan
| | - Tomoki Takamura
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, Toyoake, Japan
| | - Sayuri Nomura
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, Toyoake, Japan
| | - Toru Nishikawa
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, Toyoake, Japan
| | - Aiko Fukui
- Department of Clinical Pharmacy Practice and Health Care Management, Faculty of Pharmacy, Meijo University, Nagoya, Japan
| | - Keisuke Osakabe
- Faculty of Medical Technology, School of Health Sciences, Fujita Health University, Toyoake, Japan
| | - Naohiro Ichino
- Faculty of Medical Technology, School of Health Sciences, Fujita Health University, Toyoake, Japan
| | - Kentaro Yoshioka
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, Toyoake, Japan
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12
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Yamada H, Suzuki K, Ichino N, Ohashi K, Osakabe K, Sugimoto K, Ando Y, Ishikawa H, Teradaira R, Inoue T, Hamajima N, Hashimoto S. Association of Serum Level of microRNAs (miR-27a, miR-122, and miR-320) with Obesity Index among Japanese Subjects. Int J Epidemiol 2015. [DOI: 10.1093/ije/dyv096.309] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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13
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Osakabe K, Ichino N, Nishikawa T, Sugiyama H, Kato M, Shibata A, Asada W, Kawabe N, Hashimoto S, Murao M, Nakano T, Shimazaki H, Kan T, Nakaoka K, Takagawa Y, Ohki M, Kurashita T, Takamura T, Yoshioka K. Changes of shear-wave velocity by interferon-based therapy in chronic hepatitis C. World J Gastroenterol 2015; 21:10215-23. [PMID: 26401087 PMCID: PMC4572803 DOI: 10.3748/wjg.v21.i35.10215] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 06/03/2015] [Accepted: 07/18/2015] [Indexed: 02/07/2023] Open
Abstract
AIM To evaluate the changes of shear-wave velocity (Vs) by acoustic radiation force impulse after treatment in chronic hepatitis C. METHODS Eighty-seven patients with chronic hepatitis C were consecutively treated with combinations of interferon (IFN) plus ribavirin (RBV). Vs value (m/s) was measured with acoustic radiation force impulse before treatment, at end of treatment (EOT), 1 year after EOT, and 2 years after EOT. RESULTS In patients with a sustained virological response (SVR) (n = 41), Vs significantly decreased at EOT [1.19 (1.07-1.37), P = 0.0004], 1 year after EOT [1.10 (1.00-1.22), P = 0.0001], and 2 years after EOT [1.05 (0.95-1.16), P < 0.0001] compared with baseline [1.27 (1.11-1.49)]. In patients with a relapse (n = 26), Vs did not significantly decrease at EOT [1.23 (1.12-1.55)], 1 year after EOT [1.20 (1.12-1.80)], and 2 years after EOT [1.41 (1.08-2.01)] compared with baseline [1.39 (1.15-1.57)]. In patients with a nonvirological response (n = 20), Vs did not significantly decrease at EOT [1.64 (1.43-2.06)], 1 year after EOT [1.66 (1.30-1.95)], and 2 years after EOT [1.61 (1.36-2.37)] compared with baseline [1.80 (1.54-2.01)]. Among genotype 1 patients, baseline Vs was significantly lower in SVR patients [1.28 (1.04-1.40)] than in non-SVR patients [1.56 (1.20-1.83)] (P = 0.0142). CONCLUSION Reduction of Vs values was shown in SVR patients after IFN-plus-RBV therapy by acoustic radiation force impulse.
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14
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Yamada H, Ohashi K, Suzuki K, Munetsuna E, Ando Y, Yamazaki M, Ishikawa H, Ichino N, Teradaira R, Hashimoto S. Longitudinal study of circulating miR-122 in a rat model of non-alcoholic fatty liver disease. Clin Chim Acta 2015; 446:267-71. [PMID: 25958847 DOI: 10.1016/j.cca.2015.05.002] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Revised: 05/02/2015] [Accepted: 05/02/2015] [Indexed: 12/30/2022]
Abstract
BACKGROUND Circulating microRNAs (miRs) may be promising biomarkers for several diseases. We previously found that miR-122 can function as a biomarker for non-alcoholic fatty liver disease (NAFLD). However, little is known regarding the time course of circulating miR-122 levels during the development of NAFLD. Here, we examined circulating miR-122 levels using a rat model of NAFLD. METHODS To clarify changes in serum levels of miR-122 during development of NAFLD, experimental rats were fed a high-fat diet (HFD) for 2-10 weeks, while control rats received standard chow. Serum and liver tissue was collected from all animals at 2, 6, and 10 weeks of feeding. Clinical laboratory parameters (cholesterol, TG, AST, ALT, NEFA) were determined by biochemistry analyzer. Hepatic lipid accumulation was estimated by Oil red O staining. Circulating miR-122 levels were then measured by real-time polymerase chain reaction. RESULTS Over the 10 weeks of feeding, body weight, total liver lipids, and liver and serum triacylglycerol were increased in the HFD group compared to the control group. However, no significant changes in serum alanine aminotransferase activity were observed, suggesting that NAFLD status was mild. In contrast, we observed drastic up-regulation of circulating miR-122 levels. Our findings suggest that serum miR-122 level is indeed useful for assessing early NAFLD and might be superior to clinical markers traditionally used to monitor hepatic disease.
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Affiliation(s)
- Hiroya Yamada
- Department of Hygiene, Fujita Health University School of Medicine, Toyoake, Japan.
| | - Koji Ohashi
- Department of Clinical Biochemistry, Fujita Health University School of Health Sciences, Toyoake, Japan
| | - Koji Suzuki
- Department of Public Health, Fujita Health University School of Health Sciences, Toyoake, Japan
| | - Eiji Munetsuna
- Department of Biochemistry, Fujita Health University School of Medicine, Toyoake, Japan
| | - Yoshitaka Ando
- Department of Joint Research Laboratory of Clinical Medicine, Fujita Health University School of Medicine, Toyoake, Japan
| | - Mirai Yamazaki
- Department of Clinical Biochemistry, Fujita Health University School of Health Sciences, Toyoake, Japan
| | - Hiroaki Ishikawa
- Department of Clinical Biochemistry, Fujita Health University School of Health Sciences, Toyoake, Japan
| | - Naohiro Ichino
- Department of Clinical Physiology, Fujita Health University School of Health Sciences, Toyoake, Japan
| | - Ryouji Teradaira
- Department of Clinical Biochemistry, Fujita Health University School of Health Sciences, Toyoake, Japan
| | - Shuji Hashimoto
- Department of Hygiene, Fujita Health University School of Medicine, Toyoake, Japan
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15
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Nakaoka K, Hashimoto S, Kawabe N, Nitta Y, Murao M, Nakano T, Shimazaki H, Kan T, Takagawa Y, Ohki M, Kurashita T, Takamura T, Nishikawa T, Ichino N, Osakabe K, Yoshioka K. PNPLA3 I148M associations with liver carcinogenesis in Japanese chronic hepatitis C patients. Springerplus 2015; 4:83. [PMID: 25713769 PMCID: PMC4334918 DOI: 10.1186/s40064-015-0870-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Accepted: 02/03/2015] [Indexed: 12/15/2022]
Abstract
Aim To investigate associations between patatin-like phospholipase domain-containing 3 (PNPLA3) genotypes and fibrosis and hepatocarcinogenesis in Japanese chronic hepatitis C (CHC) patients. Methods Two hundred and thirty-one patients with CHC were examined for PNPLA3 genotypes, liver stiffness measurements (LSM), and hepatocellular carcinoma (HCC) from May 2010 to October 2012 at Fujita Health University Hospital. The rs738409 single nucleotide polymorphism (SNP) encoding for a functional PNPLA3 I148M protein variant was genotyped using a TaqMan predesigned SNP genotyping assay. LSM was determined as the velocity of a shear wave (Vs) with an acoustic radiation force impulse. Vs cut-off values for cirrhosis were set at 1.55 m/s. We excluded CHC patients with a sustained virological response or relapse after interferon treatment. Results PNPLA3 genotypes were CC, CG, and GG for 118, 72, and 41 patients, respectively. Multivariable logistic regression analysis selected older age (OR = 1.06; 95% CI: 1.03–1.09; p < 0.0001), higher body mass index (BMI) (OR= 1.12; 95% CI: 1.03–1.22; p = 0.0082), and PNPLA3 genotype GG (OR = 2.07; 95% CI: 0.97–4.42; p = 0.0599) as the factors independently associated with cirrhosis. When 137 patients without past history of interferon treatment were separately assessed, multivariable logistic regression analysis selected older age (OR = 1.05; 95% CI: 1.02–1.09; p = 0.0034), and PNPLA3 genotype GG (OR = 3.35; 95% CI: 1.13–9.91; p = 0.0291) as the factors independently associated with cirrhosis. Multivariable logistic regression analysis selected older age (OR = 1.12; 95% CI: 1.07–1.17; p < 0.0001), PNPLA3 genotype GG (OR = 2.62; 95% CI: 1.15–5.96; p = 0.0218), and male gender (OR = 1.83; 95% CI: 0.90–3.71); p = 0.0936) as the factors independently associated with HCC. Conclusion PNPLA3 genotype I148M is one of risk factors for developing HCC in Japanese CHC patients, and is one of risk factors for progress to cirrhosis in the patients without past history of interferon treatment.
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Affiliation(s)
- Kazunori Nakaoka
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, 1-98 Dengakugakubo, Kutsukakecho, Toyoake, Aichi 470-1192 Japan
| | - Senju Hashimoto
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, 1-98 Dengakugakubo, Kutsukakecho, Toyoake, Aichi 470-1192 Japan
| | - Naoto Kawabe
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, 1-98 Dengakugakubo, Kutsukakecho, Toyoake, Aichi 470-1192 Japan
| | - Yoshifumi Nitta
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, 1-98 Dengakugakubo, Kutsukakecho, Toyoake, Aichi 470-1192 Japan
| | - Michihito Murao
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, 1-98 Dengakugakubo, Kutsukakecho, Toyoake, Aichi 470-1192 Japan
| | - Takuji Nakano
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, 1-98 Dengakugakubo, Kutsukakecho, Toyoake, Aichi 470-1192 Japan
| | - Hiroaki Shimazaki
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, 1-98 Dengakugakubo, Kutsukakecho, Toyoake, Aichi 470-1192 Japan
| | - Toshiki Kan
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, 1-98 Dengakugakubo, Kutsukakecho, Toyoake, Aichi 470-1192 Japan
| | - Yuka Takagawa
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, 1-98 Dengakugakubo, Kutsukakecho, Toyoake, Aichi 470-1192 Japan
| | - Masashi Ohki
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, 1-98 Dengakugakubo, Kutsukakecho, Toyoake, Aichi 470-1192 Japan
| | - Takamitsu Kurashita
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, 1-98 Dengakugakubo, Kutsukakecho, Toyoake, Aichi 470-1192 Japan
| | - Tomoki Takamura
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, 1-98 Dengakugakubo, Kutsukakecho, Toyoake, Aichi 470-1192 Japan
| | - Toru Nishikawa
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, 1-98 Dengakugakubo, Kutsukakecho, Toyoake, Aichi 470-1192 Japan
| | - Naohiro Ichino
- Faculty of Medical Technology, School of Health Sciences, Fujita Health University, Toyoake, Aichi 470-1192 Japan
| | - Keisuke Osakabe
- Faculty of Medical Technology, School of Health Sciences, Fujita Health University, Toyoake, Aichi 470-1192 Japan
| | - Kentaro Yoshioka
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, 1-98 Dengakugakubo, Kutsukakecho, Toyoake, Aichi 470-1192 Japan
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16
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Ichino N, Osakabe K, Sugimoto K, Suzuki K, Yamada H, Takai H, Sugiyama H, Yukitake J, Inoue T, Ohashi K, Hata T, Hamajima N, Nishikawa T, Hashimoto S, Kawabe N, Yoshioka K. The NAFLD Index: A Simple and Accurate Screening Tool for the Prediction of Non-Alcoholic Fatty Liver Disease. Rinsho Byori 2015; 63:32-43. [PMID: 26524877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE Non-alcoholic fatty liver disease (NAFLD) is a common debilitating condition in many industrialized countries that increases the risk of cardiovascular disease. The aim of this study was to derive a simple and accurate screening tool for the prediction of NAFLD in the Japanese population. METHODS A total of 945 participants, 279 men and 666 women living in Hokkaido, Japan, were enrolled among residents who attended a health check-up program from 2010 to 2014. Participants with an alcohol consumption > 20 g/day and/or a chronic liver disease, such as chronic hepatitis B, chronic hepatitis C or autoimmune hepatitis, were excluded from this study. Clinical and laboratory data were examined to identify predictive markers of NAFLD. RESULTS A new predictive index for NAFLD, the NAFLD index, was constructed for men and for women. The NAFLD index for men = -15.5693+0.3264 [BMI] +0.0134 [triglycerides (mg/dl)], and for women = -31.4686+0.3683 [BMI] +2.5699 [albumin (g/dl)] +4.6740[ALT/AST] -0.0379 [HDL cholesterol (mg/dl)]. The AUROC of the NAFLD index for men and for women was 0.87(95% CI 0.88-1.60) and 0.90 (95% CI 0.66-1.02), respectively. The cut-off point of -5.28 for men predicted NAFLD with an accuracy of 82.8%. For women, the cut-off point of -7.65 predicted NAFLD with an accuracy of 87.7%. CONCLUSION A new index for the non-invasive prediction of NAFLD, the NAFLD index, was constructed using available clinical and laboratory data. This index is a simple screening tool to predict the presence of NAFLD.
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Watarai R, Suzuki K, Ichino N, Osakabe K, Sugimoto K, Yamada H, Hamajima T, Hamajima N, Inoue T. Association between serum levels of carotenoids and serum asymmetric dimethylarginine levels in Japanese subjects. J Epidemiol 2014; 24:250-7. [PMID: 24727752 PMCID: PMC4000773 DOI: 10.2188/jea.je20130137] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Background Asymmetric dimethylarginine (ADMA) is an endogenous inhibitor of endothelium nitric oxide synthase (NOS). ADMA binds to a substrate-binding site of NOS and then inhibits nitric oxide production from vascular endothelial cells. Elevated ADMA levels are a risk factor for cardiovascular disease. Recently, it was reported that plasma ADMA levels were negatively correlated with vegetable and fruit consumption. The purpose of this study was to examine the association between serum levels of carotenoids and serum ADMA levels in Japanese subjects. Methods We conducted a cross-sectional study of 470 subjects (203 men and 267 women) who attended a health examination in August 2011. Serum levels of several carotenoids were separately measured by high-performance liquid chromatography. Serum ADMA levels were determined by using an enzyme-linked immunosorbent assay kit. Results In women, the multivariate-adjusted odds ratios (ORs) of elevated serum ADMA levels were significantly decreased in the highest tertile for β-cryptoxanthin (OR 0.47, 95% CI 0.23–0.95), α-carotene (OR 0.39, 95% CI 0.18–0.79), and β-carotene (OR 0.36, 95% CI 0.17–0.73) compared to the lowest tertile. In men, significantly decreased ORs were observed in the highest tertiles of serum zeaxanthin/lutein (OR 0.23, 95% CI 0.06–0.69) and α-carotene (OR 0.26, 95% CI 0.07–0.82), and in the middle and the highest tertiles of serum β-carotene (OR 0.27, 95% CI 0.09–0.74 and OR 0.20, 95% CI 0.03–0.88, respectively) when the tertile cutoff points of women were extrapolated to men. Conclusions Higher serum levels of carotenoids, such as α-carotene and β-carotene, may help to prevent elevated serum ADMA levels in Japanese subjects.
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Affiliation(s)
- Rika Watarai
- Clinical Laboratory Medicine, Fujita Health University Graduate School of Health Sciences
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Nishikawa T, Hashimoto S, Kawabe N, Harata M, Nitta Y, Murao M, Nakano T, Mizuno Y, Shimazaki H, Kan T, Nakaoka K, Takagawa Y, Ohki M, Ichino N, Osakabe K, Yoshioka K. Factors correlating with acoustic radiation force impulse elastography in chronic hepatitis C. World J Gastroenterol 2014; 20:1289-1297. [PMID: 24574802 PMCID: PMC3921510 DOI: 10.3748/wjg.v20.i5.1289] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Revised: 09/28/2013] [Accepted: 11/13/2013] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the factors other than fibrosis stage correlating with acoustic radiation force impulse (ARFI) elastograpy in chronic hepatitis C.
METHODS: ARFI elastograpy was performed in 108 consecutive patients with chronic hepatitis C who underwent a liver biopsy. The proportion of fibrosis area in the biopsy specimens was measured by computer-assisted morphometric image analysis.
RESULTS: ARFI correlated significantly with fibrosis stage (β = 0.1865, P < 0.0001) and hyaluronic acid levels (β = 0.0008, P = 0.0039) in all patients by multiple regression analysis. Fibrosis area correlated significantly with ARFI by Spearman’s rank correlation test but not by multiple regression analysis. ARFI correlated significantly with body mass index (BMI) (β = -0.0334, P = 0.0001) in F 0 or F 1, with γ-glutamyltranspeptidase levels (β = 0.0048, P = 0.0012) in F 2, and with fibrosis stage (β = 0.2921, P = 0.0044) and hyaluronic acid levels (β = 0.0012, P = 0.0025) in F 3 or F 4. The ARFI cutoff value was 1.28 m/s for F≥ 2, 1.44 m/s for F≥ 3, and 1.73 m/s for F 4.
CONCLUSION: ARFI correlated with fibrosis stage and hyaluronic acid but not with inflammation. ARFI was affected by BMI, γ-glutamyltranspeptidase, and hyaluronic acid in each fibrosis stage.
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Suzuki K, Honjo H, Ichino N, Osakabe K, Sugimoto K, Yamada H, Kusuhara Y, Watarai R, Hamajima T, Hamajima N, Inoue T. Association of serum carotenoid levels with urinary albumin excretion in a general Japanese population: the Yakumo study. J Epidemiol 2013; 23:451-6. [PMID: 24097248 PMCID: PMC3834283 DOI: 10.2188/jea.je20130058] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Background Albuminuria is a risk factor for not only nephropathy progression but also cardiovascular disease. Oxidative stress may have a role in the positive association between albuminuria and cardiovascular disease. Methods This cross-sectional study investigated the associations of serum levels of carotenoids, which are dietary antioxidants, with albuminuria among 501 Japanese adults (198 men, mean age ± SD: 66.4 ± 10.0 years; 303 women, mean age ± SD: 65.4 ± 9.8 years) who attended a health examination. Serum levels of carotenoids were determined by high-performance liquid chromatography. Logistic regression analysis was used to estimate odds ratios (ORs) with 95% CIs for albuminuria after adjustment for age, body mass index, smoking habits, drinking habits, hypertension, diabetes mellitus, and dyslipidemia. Results Prevalence of albuminuria was 15.4% among men and 18.1% among women. Among women with albuminuria, geometric mean serum levels of canthaxanthin, lycopene, β-carotene, total carotenes, and provitamin A were significantly lower than those of normoalbuminuric women. Adjusted ORs for albuminuria among women in the highest tertiles of serum β-carotene (OR, 0.45; 95% CI, 0.20–0.98) and provitamin A (OR, 0.45; 95% CI, 0.20–0.97) were significantly lower as compared with those for women in the lowest tertile. There were no associations between serum carotenoids and albuminuria in men. Conclusions An increased level of serum provitamin A, especially serum β-carotene, was independently associated with lower risk of albuminuria among Japanese women.
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Affiliation(s)
- Koji Suzuki
- Department of Public Health, Fujita Health University School of Health Sciences
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20
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Suzuki K, Ishii J, Kitagawa F, Kuno A, Kusuhara Y, Ochiai J, Ichino N, Osakabe K, Sugimoto K, Yamada H, Ito Y, Hamajima N, Inoue T. Association of serum carotenoid levels with N-terminal pro-brain-type natriuretic peptide: a cross-sectional study in Japan. J Epidemiol 2013; 23:163-8. [PMID: 23474820 PMCID: PMC3700260 DOI: 10.2188/jea.je20120087] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Several epidemiologic studies have reported an inverse association between serum levels of carotenoids and cardiovascular disease risk. However, no studies have reported an association between serum carotenoids and N-terminal pro-brain-type natriuretic peptide (NT-proBNP) in the general population. METHODS In this cross-sectional study, we investigated whether serum carotenoids were associated with serum NT-proBNP in 1056 Japanese subjects (390 men, 666 women) who attended a health examination. Serum levels of carotenoids were separately determined by high-performance liquid chromatography. Serum NT-proBNP level was measured by electrochemiluminescence immunoassay. RESULTS Serum NT-proBNP was elevated (≥55 pg/ml) in 31.8% of men and 48.2% of women. Multivariate logistic regression analyses adjusted for confounding factors showed a significant association between the highest quartile of serum α-carotene and elevated NT-proBNP in men (odds ratio [OR] = 0.40, 95% CI = 0.19-0.82, P for trend = 0.005) and women (OR = 0.62, 95% CI = 0.39-0.99, P for trend = 0.047). In women, moreover, elevated serum NT-proBNP was significantly associated with serum canthaxanthin (OR = 0.57, 95% CI = 0.36-0.90 for highest quartile, P for trend = 0.026) and β-cryptoxanthin (OR = 0.53, 95% CI = 0.32-0.85 for highest quartile, P for trend = 0.026), after adjusting for potential confounders. CONCLUSIONS Higher levels of serum carotenoids were associated with lower risk of elevated serum NT-proBNP levels after adjusting for possible confounders, which suggests that a diet rich in carotenoids could help prevent cardiac overload in the Japanese population.
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Affiliation(s)
- Koji Suzuki
- Department of Public Health, Fujita Health University School of Health Sciences, Toyoake, Aichi 470-1192, Japan.
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Osakabe K, Ichino N, Nishikawa T, Sugiyama H, Kato M, Kitahara S, Hashimoto S, Kawabe N, Harata M, Nitta Y, Murao M, Nakano T, Shimazaki H, Arima Y, Suzuki K, Yoshioka K. Reduction of liver stiffness by antiviral therapy in chronic hepatitis B. J Gastroenterol 2011; 46:1324-34. [PMID: 21822591 DOI: 10.1007/s00535-011-0444-4] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [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] [Received: 04/04/2011] [Accepted: 07/07/2011] [Indexed: 02/04/2023]
Abstract
BACKGROUND Liver stiffness (LS) has been reported to correlate with fibrosis stage (F). The correlation between LS and fibrosis stage and the reduction of LS by antiviral therapy were examined in patients with hepatitis B infection. METHODS LS was measured by FibroScan in 212 patients infected with hepatitis B virus. Liver biopsies were done in 51 patients. Changes of LS were assessed in 29 patients treated with nucleotide or nucleoside analogs and 52 patients without antiviral therapy. RESULTS LS was significantly correlated with fibrosis stage (ρ = 0.686, P < 0.0001). The optimal cut-off values of LS were 7.1 kPa for F ≥ 2, 10.7 kPa for F ≥ 3, and 16.0 kPa for F4. LS was significantly reduced by antiviral therapy, from 12.9 (range 6.2-17.9) kPa to 6.6 (4.4-10.3) kPa measured at an interval of 512 (range 366-728) days (P < 0.0001). Eleven of 19 (58%) patients with baseline fibrosis stages of F3-4 deduced from LS had 2-point or greater reductions of deduced stage at the last LS measurement. The change ratio of hyaluronic acid (P = 0.0390) was associated with a 2-point or greater reduction of deduced fibrosis stage. Without antiviral therapy, LS tended to increase, increasing from 6.1 (range 3.9-8.5) kPa to 6.3 (range 4.4-9.7) kPa at an interval of 422 (range 358-709) days (P = 0.0682). CONCLUSIONS LS was significantly correlated with fibrosis stage in patients with chronic hepatitis B. The reduction of LS by antiviral therapy was significantly correlated with the reduction of hyaluronic acid. Thus, we conclude that LS can be useful to assess the progression and regression of liver fibrosis stage noninvasively.
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Affiliation(s)
- Keisuke Osakabe
- School of Health Sciences, Fujita Health University, Aichi, Japan
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22
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Ichino N, Osakabe K, Sugimoto K, Yokoi A, Inoue T, Suzuki K, Kusuhara Y, Hamajima N, Takai H, Hata T. The stiffness parameter β assessed by an ultrasonic phase-locked echo-tracking system is associated with plaque formation in the common carotid artery. J Med Ultrason (2001) 2011; 39:3-9. [DOI: 10.1007/s10396-011-0323-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Accepted: 07/06/2011] [Indexed: 10/17/2022]
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23
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Harata M, Hashimoto S, Kawabe N, Nitta Y, Murao M, Nakano T, Arima Y, Shimazaki H, Ishikawa T, Okumura A, Ichino N, Osakabe K, Nishikawa T, Yoshioka K. Liver stiffness in extrahepatic cholestasis correlates positively with bilirubin and negatively with alanine aminotransferase. Hepatol Res 2011; 41:423-9. [PMID: 21435129 DOI: 10.1111/j.1872-034x.2011.00797.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [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: 12/18/2022]
Abstract
AIM Transient elastography is a non-invasive tool to measure liver stiffness (LS), which has been reported to correlate with stage of liver fibrosis. Extrahepatic cholestasis was reported to cause elevated LS, which is considered to be attributed to the increased hydrostatic pressure in the liver. In the present study, the correlation of LS with laboratory data was investigated in extrahepatic cholestasis. The change of LS after biliary drainage was also assessed. METHODS LS was measured in 29 patients with extrahepatic cholestasis due to carcinomas in 12 and non-neoplastic diseases of biliary tract or pancreas in 17. RESULTS In 15 patients, LS was 11.4 kPa or higher which suggested liver cirrhosis in chronic infection of hepatitis C virus. LS significantly correlated positively with serum bilirubin levels (r = 0.726, P < 0.0001) and negatively with serum aspartate aminotransferase (AST) levels (r = -0.481, P = 0.0082) and alanine aminotransferase (ALT) levels (r = -0.631, P = 0.0002). Biliary drainage led to a reduction of bilirubin by 13.5 to 0.9 mg/dL which was significantly correlated with a reduction of LS by 14.3 to 0.5 kPa (r = 0.524, P = 0.0257). CONCLUSION In extrahepatic cholestasis, the elevation of LS which is probably attributed to the increased hydrostatic pressure in the liver, correlates positively with the accumulation of bilirubin but negatively with damage of hepatocytes indicated by ALT levels. Further studies on the mechanism underlying the elevation of LS should be helpful to elucidate the pathogenesis of extrahepatic cholestasis.
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Affiliation(s)
- Masao Harata
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University Faculty of Medical Technology, School of Health Sciences Department of Clinical Laboratory, Fujita Health University Hospital, Toyoake Department of Medical Technology, Nagoya University School of Health Sciences, Nagoya Department of Gastroenterology, Kainan Hospital, Yatomi, Aichi, Japan
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Ichino N, Osakabe K, Nishikawa T, Sugiyama H, Kato M, Kitahara S, Hashimoto S, Kawabe N, Harata M, Nitta Y, Murao M, Nakano T, Arima Y, Shimazaki H, Suzuki K, Yoshioka K. A new index for non-invasive assessment of liver fibrosis. World J Gastroenterol 2010; 16:4809-16. [PMID: 20939109 PMCID: PMC2955250 DOI: 10.3748/wjg.v16.i38.4809] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To construct and evaluate a new non-invasive fibrosis index for assessment of the stage of liver fibrosis.
METHODS: A new fibrosis index (Fibro-Stiffness index) was developed in 165 of 285 patients with chronic hepatitis C, and was validated in the other 120 patients where liver biopsy was performed. Its usefulness was compared with liver stiffness (LS) measured by FibroScan, the aminotransferase-to-platelet ratio index, the Forns index and the FibroIndex.
RESULTS: The Fibro-Stiffness index consists of LS, platelet count and prothrombin time. The values of the Fibro-Stiffness index differed significantly between neighboring fibrosis stages except F0-F1. The area under the receiver operating characteristics curves of the Fibro-Stiffness index for prediction of F ≥ 2 (0.90), F ≥ 3 (0.90) and F = 4 (0.92) in the estimation group and those for F ≥ 3 (0.93) and F = 4 (0.97) in the validation group were the highest among the 5 methods examined. The accuracy of the Fibro-Stiffness index had highest values for F ≥ 2, F ≥ 3 and F = 4 in both the estimation and validation groups. The diagnostic performance for F = 4 was improved by a combination of the Fibro-Stiffness index with serum hyaluronic acid level.
CONCLUSION: The Fibro-Stiffness index was constructed and validated. It showed superior diagnostic performance to other indices for F ≥ 2, 3 and 4.
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Arima Y, Kawabe N, Hashimoto S, Harata M, Nitta Y, Murao M, Nakano T, Shimazaki H, Kobayashi K, Ichino N, Osakabe K, Nishikawa T, Okumura A, Ishikawa T, Yoshioka K. Reduction of liver stiffness by interferon treatment in the patients with chronic hepatitis C. Hepatol Res 2010; 40:383-92. [PMID: 20236358 DOI: 10.1111/j.1872-034x.2009.00618.x] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [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: 12/23/2022]
Abstract
AIM To assess the regression of liver fibrosis after interferon (IFN) treatment in patients with chronic hepatitis C, liver stiffness (LS) was measured repeatedly and the factors associated with reduction of LS were assessed. METHODS LS was measured by transient elastography before treatment, at end of treatment (EOT), and 1 year and 2 years after EOT in 145 patients with chronic hepatitis C treated by IFN with or without ribavirin. RESULTS In the patients with sustained virological response (SVR) (n = 93) and relapsers (n = 28), LS significantly decreased at EOT (median, 5.4 [interquartile range, 4.0-8.6] kilopascals [kPa], P < 0.0001 and 6.8 [4.5-8.9] kPa, P = 0.0023) and 1 year after EOT (5.3 [4.2-7.0] kPa, P < 0.0001 and 6.8 [4.5-9.3] kPa, P = 0.0204) compared with baseline (8.0 [5.0-11.9] kPa and 10.6 [7.0-16.6] kPa). In SVR patients, LS significantly decreased 2 years after EOT (5.3 [4.1-6.3] kPa) compared with baseline (P < 0.0001) and LS at EOT (P = 0.0034). Two points or greater reduction of deduced stage at last LS measurement was observed in 78% of SVR patients, 59% of relapsers and 15% of patients with non-virological response whose pretreatment deduced stages were F3-F4. Fibrosis stage, hyaluronic acid levels, duration of treatment, response to treatment and alanine aminotransferase levels were associated with a 2-point or greater decrease of deduced fibrosis stage. CONCLUSION IFN treatment reduced LS in SVR patients and relapsers. Significant reduction of LS is associated with milder fibrosis stage, lower hyaluronic acid levels, longer IFN treatment, virological response of SVR or relapse and higher alanine aminotransferase levels.
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Affiliation(s)
- Yuko Arima
- Department of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University,1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi 470-1192, Japan
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26
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Nitta Y, Kawabe N, Hashimoto S, Harata M, Komura N, Kobayashi K, Arima Y, Shimazaki H, Nakano T, Murao M, Ichino N, Osakabe K, Aoki H, Hosoe Y, Sugiyama H, Nishikawa T, Yoshioka K. Liver stiffness measured by transient elastography correlates with fibrosis area in liver biopsy in patients with chronic hepatitis C. Hepatol Res 2009; 39:675-84. [PMID: 19261000 DOI: 10.1111/j.1872-034x.2009.00500.x] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [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: 12/12/2022]
Abstract
AIM Liver stiffness (LS) measured by transient elastography (TE) has been reported to correlate with liver fibrosis, which is usually semiquantitatively assessed. In the present study, the fibrosis area was measured by image analysis software in liver biopsy specimens and its correlation with LS was assessed. METHODS LS was measured by TE in all 165 patients with chronic hepatitis C virus (HCV) infection who underwent liver biopsy consecutively in Fujita Health University Hospital from July 2004 to September 2007. RESULTS Fibrosis area was significantly correlated with fibrosis stage as assessed by the Metavir score (rho = 0.733, P < 0.0001). The optimal cut-off value of fibrosis area was 1.6% for F > or = 2, 3.1% for F > or = 3, and 3.8-6.4% for F4. LS was significantly correlated with fibrosis stage (rho = 0.734, P < 0.0001). The optimal cut-off value of LS was 7.1 kPa for F > or = 2, 9.6 kPa for F > or = 3 and 11.6-16.9 kPa for F4. Multiple linear regression analysis selected fibrosis area (P = 0.0002), alanine aminotransferase (ALT) (P = 0.0237), gamma-glutamyltransferase (gamma-GTP) (P = 0.0114), prothrombin time (P = 0.0114) and hyaluronic acid (P < 0.0001) as factors correlating with LS. CONCLUSION The correlation between LS and liver fibrosis was confirmed by the objective measurement of fibrosis area. ALT was significantly correlated with LS, suggesting that inflammatory activity also affects LS values. Despite some limitation, LS measurement is a useful method for the diagnosis of liver fibrosis.
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Affiliation(s)
- Yoshifumi Nitta
- Division of Liver, Biliary Tract and Pancreas Diseases, Department of Internal Medicine, Fujita Health University, Fujita Health University Hospital, Aichi, Japan
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27
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Nitta Y, Kawabe N, Hashimoto S, Harata M, Komura N, Kobayashi K, Arima Y, Shimazaki H, Nakano T, Murao M, Ichino N, Osakabe K, Aoki H, Hosoe Y, Sugiyama H, Nishikawa T, Yoshioka K. Liver stiffness measured by transient elastography correlates with fibrosis area in liver biopsy in patients with chronic hepatitis C. Hepatol Res 2009. [PMID: 19261000 DOI: 10.1111/j.1872–034x.2009.00500.x] [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] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIM Liver stiffness (LS) measured by transient elastography (TE) has been reported to correlate with liver fibrosis, which is usually semiquantitatively assessed. In the present study, the fibrosis area was measured by image analysis software in liver biopsy specimens and its correlation with LS was assessed. METHODS LS was measured by TE in all 165 patients with chronic hepatitis C virus (HCV) infection who underwent liver biopsy consecutively in Fujita Health University Hospital from July 2004 to September 2007. RESULTS Fibrosis area was significantly correlated with fibrosis stage as assessed by the Metavir score (rho = 0.733, P < 0.0001). The optimal cut-off value of fibrosis area was 1.6% for F > or = 2, 3.1% for F > or = 3, and 3.8-6.4% for F4. LS was significantly correlated with fibrosis stage (rho = 0.734, P < 0.0001). The optimal cut-off value of LS was 7.1 kPa for F > or = 2, 9.6 kPa for F > or = 3 and 11.6-16.9 kPa for F4. Multiple linear regression analysis selected fibrosis area (P = 0.0002), alanine aminotransferase (ALT) (P = 0.0237), gamma-glutamyltransferase (gamma-GTP) (P = 0.0114), prothrombin time (P = 0.0114) and hyaluronic acid (P < 0.0001) as factors correlating with LS. CONCLUSION The correlation between LS and liver fibrosis was confirmed by the objective measurement of fibrosis area. ALT was significantly correlated with LS, suggesting that inflammatory activity also affects LS values. Despite some limitation, LS measurement is a useful method for the diagnosis of liver fibrosis.
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Affiliation(s)
- Yoshifumi Nitta
- Division of Liver, Biliary Tract and Pancreas Diseases, Department of Internal Medicine, Fujita Health University, Fujita Health University Hospital, Aichi, Japan
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Suzuki K, Inoue T, Hioki R, Ochiai J, Kusuhara Y, Ichino N, Osakabe K, Hamajima N, Ito Y. Association of abdominal obesity with decreased serum levels of carotenoids in a healthy Japanese population. Clin Nutr 2006; 25:780-9. [PMID: 16698146 DOI: 10.1016/j.clnu.2006.01.025] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2005] [Revised: 12/08/2005] [Accepted: 01/22/2006] [Indexed: 11/19/2022]
Abstract
BACKGROUND & AIMS Few epidemiological studies have investigated the relationship between abdominal adiposity and serum levels of carotenoids. This study investigated the relationship between total and abdominal obesity and serum levels of carotenoids. METHODS Study population consisted of healthy Japanese males (n=192) and females (n=398) who attended a health examination screening (age: 49-86 years). Serum carotenoids were measured by high-performance liquid chromatography. Multiple logistic regression analysis was used to provide the multivariate-adjusted odds ratio (OR) and 95% confidence interval (CI) of obesity indices for low levels of serum carotenoids. RESULTS In females, High waist circumference was associated with low levels of serum canthaxanthin (OR=2.00, 95% CI=1.26-3.19) and beta-carotene (BC) (OR=2.01, 95% CI=1.23-3.28). High waist hip ratio was also associated with low levels of serum alpha- carotene and BC (OR=2.44, 95% CI=1.49-4.03, and OR =1.97, 95% CI=1.20-3.28, respectively). Similar results were obtained when body mass index was added to confounding factors. In males, however, there were no significant associations between obesity indices and serum levels of carotenoids. CONCLUSIONS Our results suggest that abdominal fat accumulation is associated with oxidative stress as determined by low levels of serum carotenoids in females. In males, further study excluding the effect of strong confounding factors, including smoking, is needed.
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Affiliation(s)
- Koji Suzuki
- Department of Public Health, School of Health Sciences, Fujita Health University, 1-98 Dengakugakubo Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
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29
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Ichino N, Horiguchi Y, Imai H, Osakabe K, Nishikawa T, Sugita Y, Utsugi H, Togo Y, Sawai T, Mizoguchi Y. Contrast-enhanced sonography of pancreatic ductal carcinoma using agent detection imaging. J Med Ultrason (2001) 2006; 33:29-35. [DOI: 10.1007/s10396-005-0058-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2005] [Accepted: 07/15/2005] [Indexed: 11/24/2022]
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Yamada K, Ishiguro H, Ichino N, Nishii K, Sawada H, Hida T, Nagatsu T. Expression levels of Rab2, a G protein, and Bag-1, a Bcl-2 binding protein are controlled by withdrawal of nicotine from cultured pheochromocytoma PC12 cells. J Neural Transm (Vienna) 2005; 112:633-9. [PMID: 15785859 DOI: 10.1007/s00702-005-0294-4] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2004] [Accepted: 02/12/2005] [Indexed: 10/25/2022]
Abstract
We previously reported that nicotine withdrawal up-regulates transcription of some immediately early genes (IEGs), c-fos (Ichino et al., 1999) and egr1, nur77 (Ichino et al., 2002) in cultures of pheochromocytoma PC12 cells, which are of neuronal lineage. In the present study we aimed at further elucidating the effects of nicotine withdrawal on the expression of the genes downstream of IEGs. We examined the changes in the protein levels of 2 GTP-binding proteins, Rab2 (Ras-related protein) and Rac1. PC12 cells were cultured in the presence of nicotine for 24 hours, and then the nicotine was removed from the medium. The protein level of Rab2 was low in the presence of nicotine, but was rapidly increased after nicotine withdrawal. In contrast, that of Rac1 did not change after the withdrawal. Considering the neuroprotective effect of nicotine, we also examined the level of Bag-1 protein, which is a binding protein for Bcl-2, an anti-apoptotic factor, and found a slight increase in the gene expression of Bag-1 following nicotine withdrawal. Among 56-kDa, 50-kDa, and 36-kDa protein components of the Bag-1 protein complex, the levels of 56-kDa and 50-kDa proteins were not changed by the addition or withdrawal of nicotine; but the level of the 36-kDa protein, which had been increased in the presence of nicotine, was markedly decreased after nicotine withdrawal. The present results suggest that such changes may also occur in individuals during abstaining from smoking and be related to the withdrawal symptoms experienced after smokers stop smoking.
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Affiliation(s)
- K Yamada
- School of Health Science, Fujita Health University, Toyoake, Aichi, Japan.
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Ito Y, Suzuki K, Ichino N, Imai H, Sakaguchi H, Hokama M, Nishii M, Nakano H. The Risk of Helicobacter Pylori Infection and Atrophic Gastritis from Food and Drink Intake: a Cross-sectional Study in Hokkaido, Japan. Asian Pac J Cancer Prev 2003; 1:147-156. [PMID: 12718682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023] Open
Abstract
One-hundred and fifteen subjects were diagnosed with Helicobacter pylori (HP) infection and 93 subjects with atrophic gastritis (AG) from tests of HP antibodies or serum levels of pepsinogen I and pepsinogen II involving 210 inhabitants, who participated in the health check-up program. Logistic regression analysis found that refreshing (isotonic) beverages significantly reduced the risk of HP infection (odds ratio: 0.767, 95% C.I.: 0.616-0.956). A higher frequency of intake for margarine (odds ratio: 1.413, 95% C.I.: 1.080-1.848), cheese (odds ratio: 1.416, 95% C.I.: 1.044-1.920), Tsukemono (odds ratio: 1.277, 95% C.I.: 1.000-1.631) or Cola-beverages (odds ratio: 1.471, 95% C.I.: 1.051-1.239) showed a significantly increased risk of AG. In addition, high serum values of &mgr;-carotene (odds ratio: 0.691, 95%C.I.: 0.498-0.958), linoleic acid (odds ratio: 0.594, 95%C.I.: 0.382-0.924), and &mgr;-linolenic acid (odds: 0.987, 95%C.I.: 0.976-0.998) were found to reduce the risk of AG, but not HP infection. Furthermore, these results suggest that a more frequent intake of margarine, Tsukemono (pickled vegetables), or Cola-beverages may be a risk factor for AG, while foods rich in carotenes, such as, &mgr;-carotene and n-6PUFAs, such as &mgr;-linolenic acid, may reduce the risk of AG.
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Affiliation(s)
- Yoshinori Ito
- Departments of Public Health and Clinical Physiology, Fujita Health University School of Health Sciences, Toyoake, Japan
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Ichino N, Yamada K, Nishii K, Sawada H, Nagatsu T, Ishiguro H. Increase of transcriptional levels of egr-1 and nur77 genes due to both nicotine treatment and withdrawal in pheochromocytoma cells. J Neural Transm (Vienna) 2002; 109:1015-22. [PMID: 12111438 DOI: 10.1007/s007020200084] [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: 11/26/2022]
Abstract
The influence of nicotine on the expression of egr-1 and nur77 genes by nicotine treatment and withdrawal was assessed using PC12 cells. Nicotine treatment significantly increased the amount of mRNA for egr-1 and nur77 genes at 0.5 h post-nicotine treatment in the PC12 cells. In addition, nicotine withdrawal also elevated transcriptional levels of egr-1 and nur77 genes in Northern blot analyses. Nicotine treatment (200 microM) was also found to significantly increase expressional levels of Egr-1 and Nur77 proteins at 0.5 h post-nicotine treatment. In contrast, Egr-1 and Nur77 protein levels were dramatically decreased by nicotine withdrawal. These results suggest that expressional levels of Egr-1 and Nur77 proteins in neural cells may affect the transcriptional activity of late-response genes after nicotine withdrawal.
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Affiliation(s)
- N Ichino
- Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Aichi 470-1192, Japan
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Ishiguro H, Yamada K, Sawada H, Nishii K, Ichino N, Sawada M, Kurosawa Y, Matsushita N, Kobayashi K, Goto J, Hashida H, Masuda N, Kanazawa I, Nagatsu T. Age-dependent and tissue-specific CAG repeat instability occurs in mouse knock-in for a mutant Huntington's disease gene. J Neurosci Res 2001; 65:289-97. [PMID: 11494364 DOI: 10.1002/jnr.1153] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.3] [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: 11/09/2022]
Abstract
Huntington's disease (HD) is a neurodegenerative disorder characterized by the expansion of CAG repeats in exon 1 of the HD gene. To clarify the instability of expanded CAG repeats in HD patients, an HD model mouse has been generated by gene replacement with human exon 1 of the HD gene with expansion to 77 CAG repeats. Chimeric proteins composed of human mutated exon 1 and mouse huntingtin are expressed ubiquitously in brain and peripheral tissues. One or two CAG repeat expansion was found in litters from paternal transmission, whereas contraction of CAG repeat in litters was observed through maternal transmission. Elderly mice show greater CAG repeat instability than younger mice, and a unique case was observed of an expanded 97 CAG repeat mouse. Somatic CAG repeat instability is particularly pronounced in the liver, kidney, stomach, and brain but not in the cerebellum of 100-week-old mice. The same results of expanded CAG repeat instability as observed in this HD model mouse were confirmed in the human brain of HD patients. Glial fibrillary acidic protein (GFAP)-positive cells have been found to be increased in the substantia nigra (SN), globus pallidus (GP), and striatum (St) in the brains of 40-week-old affected mice, although without neuronal cell death. The CAG repeat instability and increase in GFAP-positive cells in this mouse model appear to mirror the abnormalities in HD patients. The HD model mouse may therefore have advantages for investigations of molecular mechanisms underlying instability of CAG repeats.
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Affiliation(s)
- H Ishiguro
- Institute for Comprehensive Medical Science, Fujita Health University, Toyoake Aichi 470-1192, Japan
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Nishimoto S, Hikasa H, Ichino N, Kurita T, Yoshino K. Venous anastomoses with a microvascular anastomotic device in head and neck reconstruction. J Reconstr Microsurg 2000; 16:553-6. [PMID: 11083395 DOI: 10.1055/s-2000-8394] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.5] [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: 10/17/2022]
Abstract
The Microvascular Anastomotic System (3M coupler) uses a friction-fit union of implant rings composed of high-density polyethylene and stainless-steel pins. Several reports have described equal or greater patency rates, as well as more rapid performance, using the device, compared to conventional suturing techniques. Eighty-nine patients, who underwent head and neck surgery with free-tissue transfers, using the Microvascular Anastomotic System, were evaluated. A hundred and twenty-one venous anastomoses were done using the device. All but one was done in an end-to-end manner Arteries were anastomosed with a conventional suture technique. The flap survival rate was 100 percent. The authors conclude that the device is reliable and time-sparing for end-to-end venous anastomoses in head and neck reconstruction.
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Affiliation(s)
- S Nishimoto
- Department of Otolaryngology, Head and Neck Surgery, Osaka Medical Center for Cancer and Cardiovascular Diseases, Japan
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Yamada K, Ichino N, Nishii K, Sawada H, Higashiyama S, Ishiguro H, Nagatsu T. Characterization of the human NTAK gene structure and distribution of the isoforms for rat NTAK mRNA. Gene 2000; 255:15-24. [PMID: 10974560 DOI: 10.1016/s0378-1119(00)00309-7] [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: 12/24/2022]
Abstract
NTAK (neural- and thymus-derived activator for the ErbB kinase, neuregulin-2) is a novel member of the epidermal growth factor (EGF) family. We have isolated and characterized the human NTAK gene, comprising 12 exons spanning in excess of 55 kilobases (kb). The 7. 0kb long mRNA of the human NTAK gene was expressed in the human neuroblastoma SK-N-SH cell line with two alternative isoforms detected. Furthermore, six isoforms have been identified from rat brain and PC-12 cells. Although the alpha isoform of the NTAK gene was found to be expressed in all tissues including brain, the beta isoform was expressed only in rat brain tissues. Potential regulatory regions included consensus binding sites for AP-2, TF-IIIA, Sp-1, and YY-1 located in the 5'-flanking region of the NTAK gene.
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Affiliation(s)
- K Yamada
- Institute for Comprehensive Medical Science, Fujita Health University, Aichi 470-1192, Toyoake, Japan
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Abstract
The influence of nicotine on the expression of Fos family proteins, which specifically formed complexes with the AP-1 sequence, was assessed. mRNA for c-Fos, c-jun and jun-B were up-regulated at 0.5 h after nicotine treatment, elevated c-Fos also being apparent after withdrawal. Although nicotine failed to up-regulate the mRNA level of the fra-1 gene, the Fra- protein was highly expressed after both treatment and withdrawal. These results indicate that nicotine treatment may affect the transcriptional activity of many genes through c-Fos and c-Jun protein expression in neural cells, and that Fra-1 protein may make a contribution. These changes in immediately early genes (IEGs) may be associated with nicotine withdrawal symptoms.
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Affiliation(s)
- N Ichino
- Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Aichi, Japan
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Ishiguro H, Yamada K, Ichino N, Nagatsu T. Identification and characterization of a novel phorbol ester-responsive DNA sequence in the 5'-flanking region of the human dopamine beta-hydroxylase gene. J Biol Chem 1998; 273:21941-9. [PMID: 9705334 DOI: 10.1074/jbc.273.34.21941] [Citation(s) in RCA: 10] [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: 11/06/2022] Open
Abstract
The phorbol ester, 12-O-tetradecanoylphorbol-13-acetate (TPA), enhances transcription of many eukaryotic genes, including that for dopamine beta-hydroxylase (DBH). In the present study, we report identification and characterization of a novel sequence motif residing in the 5'-flanking region of the human DBH gene, which mediates transcriptional induction by TPA. Deletional analyses indicated the promoter region between -223 and -187 base pairs to be critical. Whereas this region does not contain any putative regulatory motifs with significant sequence homology to the AP-1 motif, extensive deletional and site-directed mutational analyses indicated that a sequence between -210 and -199 base pairs, 5'-ATCCGCCTGTCT-3', may represent a novel TPA-response element (TRE). In addition, alteration of the YY1-binding site decreased TPA-mediated induction of the DBH promoter activity, suggesting that contiguous cis-regulatory element(s) cooperate with this novel sequence motif. Furthermore, insertional mutation analyses between the YY1-binding site and the cyclic AMP-responsive element indicated that the stereospecificity of these motifs is important for intact transcriptional induction by TPA. Taken together, these data suggest that transcriptional up-regulation of the human DBH gene in response to TPA requires coordination of a novel TRE (human DBH TRE, hDTRE), cyclic AMP-responsive element, and the YY1-binding site.
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Affiliation(s)
- H Ishiguro
- Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Aichi 470-1192, Japan
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Ishiguro H, Higashiyama S, Yamada K, Ichino N, Taniguchi N, Nagatsu T. [Structure and function of a novel ErbB ligand, NTAK]. Nihon Shinkei Seishin Yakurigaku Zasshi 1998; 18:137-42. [PMID: 9866830] [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] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
A novel member of the epidermal growth factor (EGF) family, the neural and thymus-derived activator for ErbB kinase (NTAK) has been cloned from the cDNA library of a rat pheochromocytoma cell line, PC12 cells and human neuroblastoma cell line, SK-N-SH cells. Four alternative spliced isoforms from rat cDNA have been detected by the methods of RT-PCR. The rat NTAK alpha 2a isoform exhibits 94% identity in its sequence with the human NTAK alpha isoform. Three characteristic Ig-like, EGF-like and hydrophobic domains have been identified in rat and human NTAK molecules. Recombinant NTAK, the soluble 46 kDa form, binds directly to ErbB3 and ErbB4, but not ErbB1 and B2. NTAK, however, transactivates with heterodimer such as ErbB1/B3, B1/B4, B2/B3, B2/B4, and B3/B4. NTAK stimulates the differentiation of MDA-MB-453 cells, derived from blast carcinoma. NTAK competitively inhibits the binding of [125I] NRG-1 to these cells. Thus, NTAK is a new member of the EGF family displaying NRG-1 properties.
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Affiliation(s)
- H Ishiguro
- Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan
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Higashiyama S, Horikawa M, Yamada K, Ichino N, Nakano N, Nakagawa T, Miyagawa J, Matsushita N, Nagatsu T, Taniguchi N, Ishiguro H. A novel brain-derived member of the epidermal growth factor family that interacts with ErbB3 and ErbB4. J Biochem 1997; 122:675-80. [PMID: 9348101 DOI: 10.1093/oxfordjournals.jbchem.a021806] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.7] [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] Open
Abstract
A novel member of the epidermal growth factor (EGF) family, the neural- and thymus-derived activator for ErbB kinases (NTAK), has been purified and cloned. Five alternative spliced isoforms have been detected in the rat adrenal pheochromocytoma cell line, PC-12 cells. The rat NTAK alpha2a isoform exhibits 94% identity in its primary sequence with the human NTAK alpha isoform. In vivo, NTAK is only expressed in the brain of rat E11.5 embryos, and in the brain and thymus of adult rats. The soluble 46 kDa form binds directly to ErbB3 and B4, but not to ErbB1 or B2. NTAK, however, transactivates ErbB1 and B2 via heterodimerization with ErbB3 or B4. NTAK stimulates the differentiation of MDA-MB-453 cells and competitively inhibits the binding of [125I]neuregulin to these cells. In addition to these neuregulin-like properties, NTAK exhibits limited structural homology to neuregulins in the immunoglobulin (Ig)-like, EGF-like, and hydrophobic domains. Thus, NTAK appears to be a new member of the EGF family displaying neuregulin properties.
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Affiliation(s)
- S Higashiyama
- Department of Biochemistry, Osaka University Medical School, Suita.
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Ishiguro H, Ichino N, Yamada K, Nagatsu T. Nicotine regulates mRNA level of tyrosine hydroxylase gene but not that of nicotinic acetylcholine receptor genes in PC12 cells. Neurosci Lett 1997; 228:37-40. [PMID: 9197282 DOI: 10.1016/s0304-3940(97)00360-1] [Citation(s) in RCA: 14] [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: 02/04/2023]
Abstract
To understand the molecular mechanism of nicotine addiction, we examined the mRNA level of the tyrosine hydroxylase (TH) gene and that of the nicotinic acetylcholine receptor (nAChR) genes by long-term nicotine treatment. The transcript levels of the four subunit genes of the nAChR (alpha3, alpha5, alpha7, and beta4) were down-regulated by the treatment with forskolin, whereas the mRNA levels of the TH gene was increased in PC12 cells. By long-term nicotine treatment, the mRNA level of the nAChR genes did not change, but transcript levels of alpha3, alpha5, alpha7, and beta4 nAChR genes were still negatively regulated by forskolin. However, the mRNA level of TH gene did not change by forskolin under long-term nicotine treatment. The TH gene may be regulated by a nicotine-related signaling pathway, whereas alpha3, alpha5, alpha7, and beta4 nAChR genes may be further regulated by a protein kinase A (PKA) pathway under long-term nicotine treatment.
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Affiliation(s)
- H Ishiguro
- Institute for Comprehensive Medical Science, School of Medicine, Fujita Health University, Aichi, Japan
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