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Fukatsu-Chikumoto A, Hirano T, Takahashi S, Ishida T, Yasuda K, Donishi T, Suga K, Doi K, Oishi K, Ohata S, Murata Y, Yamaji Y, Asami-Noyama M, Edakuni N, Kakugawa T, Matsunaga K. Correlation between frailty and reduction in cortical thickness in patients with chronic obstructive pulmonary disease. Sci Rep 2024; 14:6106. [PMID: 38480723 PMCID: PMC10937661 DOI: 10.1038/s41598-024-53933-0] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 02/06/2024] [Indexed: 03/17/2024] Open
Abstract
Physical inactivity and cognitive impairment in patients with chronic obstructive pulmonary disease (COPD) can lead to frailty and poor prognoses. However, little is known regarding the association between frailty and the human brain. We hypothesized that the brain structure could change according to frailty in patients with COPD and focused on cortical thickness. Cortical thickness measured by magnetic resonance imaging and frailty scores using the Kihon Checklist (KCL) were assessed in 40 patients with stable COPD and 20 healthy controls. Among the 34 regions assessed, multiple regions were thinner in patients with COPD than in healthy individuals (p < 0.05). We found significant negative correlations between the eight regions and the KCL scores only in patients with COPD. After adjusting for age and cognitive impairment, the association between the left and six right regions remained statistically significant. The correlation coefficient was the strongest in the bilateral superior frontal gyrus (left: ρ = - 0.5319, p = 0.0006) (right: ρ = - 0.5361, p = 0.0005). Interestingly, among the KCL scores, the daily activity domain showed the strongest correlation (sensitivity, 90%; specificity, 73%) with the bottom quartile of the reduction in the superior frontal gyrus. Frailty in patients with COPD is associated with a thickness reduction in the cortical regions, reflecting social vulnerability.
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Affiliation(s)
- Ayumi Fukatsu-Chikumoto
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-Kogushi, Ube, 755-8505, Japan
| | - Tsunahiko Hirano
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-Kogushi, Ube, 755-8505, Japan.
| | - Shun Takahashi
- Department of Psychiatry, Osaka University Graduate School of Medicine, Suita, 565-0871, Japan
- Department of Neuropsychiatry, Wakayama Medical University, Wakayama, 641-0012, Japan
- Graduate School of Rehabilitation Science, Osaka Metropolitan University, Habikino, 583-8555, Japan
- Clinical Research and Education Center, Asakayama General Hospital, Sakai, 590-0018, Japan
| | - Takuya Ishida
- Department of Neuropsychiatry, Wakayama Medical University, Wakayama, 641-0012, Japan
| | - Kasumi Yasuda
- Department of Neuropsychiatry, Wakayama Medical University, Wakayama, 641-0012, Japan
| | - Tomohiro Donishi
- Department of System Neurophysiology, Wakayama Medical University, Wakayama, 641-0012, Japan
| | - Kazuyoshi Suga
- Department of Radiology, St. Hill Hospital, Ube, 755-0155, Japan
| | - Keiko Doi
- Department of Pulmonology and Gerontology, Graduate School of Medicine, Yamaguchi University, Ube, 755-8505, Japan
| | - Keiji Oishi
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-Kogushi, Ube, 755-8505, Japan
| | - Shuichiro Ohata
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-Kogushi, Ube, 755-8505, Japan
| | - Yoriyuki Murata
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-Kogushi, Ube, 755-8505, Japan
| | - Yoshikazu Yamaji
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-Kogushi, Ube, 755-8505, Japan
| | - Maki Asami-Noyama
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-Kogushi, Ube, 755-8505, Japan
| | - Nobutaka Edakuni
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-Kogushi, Ube, 755-8505, Japan
| | - Tomoyuki Kakugawa
- Department of Pulmonology and Gerontology, Graduate School of Medicine, Yamaguchi University, Ube, 755-8505, Japan
| | - Kazuto Matsunaga
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-Kogushi, Ube, 755-8505, Japan
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Yamaji Y, Hirano T, Ogawa H, Fukatsu-Chikumoto A, Matsuda K, Hamada K, Ohata S, Suetake R, Murata Y, Oishi K, Asami-Noyama M, Edakuni N, Kakugawa T, Matsunaga K. Utility of the Shortness of Breath in Daily Activities Questionnaire (SOBDA-Q) to Detect Sedentary Behavior in Patients with Chronic Obstructive Pulmonary Disease (COPD). J Clin Med 2023; 12:4105. [PMID: 37373800 DOI: 10.3390/jcm12124105] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 06/09/2023] [Accepted: 06/15/2023] [Indexed: 06/29/2023] Open
Abstract
Sedentary behavior has been shown to be an independent predictor of mortality in patients with chronic obstructive pulmonary disease (COPD). However, physicians have difficulty ascertaining patients' activity levels because they tend to avoid shortness of breath. The reformed shortness of breath (SOB) in the daily activities questionnaire (SOBDA-Q) specifies the degree of SOB by measuring low-intensity activity behavior in everyday living. Therefore, we aimed to explore the utility of the SOBDA-Q in detecting sedentary COPD. We compared the modified Medical Research Council dyspnea scale (mMRC), COPD assessment test (CAT), and SOBDA-Q with physical activity levels (PAL) in 17 healthy patients, 32 non-sedentary COPD patients (PAL ≥ 1.5 METs·h), and 15 sedentary COPD patients (PAL < 1.5 METs·h) in this cross-sectional study. CAT and all domains of the SOBDA-Q in all patients are significantly correlated with PAL, even after adjusting for age. The dietary domain has the highest specificity, and the outdoor activity domain has the highest sensitivity for detecting sedentary COPD. Combining these domains helped determine patients with sedentary COPD (AUC = 0.829, sensitivity = 1.00, specificity = 0.55). The SOBDA-Q is associated with PAL and could be a useful tool for determining patients with sedentary COPD. Moreover, eating and outing inactivity claims reflect sedentary behavior in patients with COPD.
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Affiliation(s)
- Yoshikazu Yamaji
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan
| | - Tsunahiko Hirano
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan
| | - Hiromasa Ogawa
- Department of Occupational Health, Graduate School of Medicine, Tohoku University, Sendai 980-8575, Japan
| | - Ayumi Fukatsu-Chikumoto
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan
| | - Kazuki Matsuda
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan
| | - Kazuki Hamada
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan
| | - Shuichiro Ohata
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan
| | - Ryo Suetake
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan
| | - Yoriyuki Murata
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan
| | - Keiji Oishi
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan
| | - Maki Asami-Noyama
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan
| | - Nobutaka Edakuni
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan
| | - Tomoyuki Kakugawa
- Department of Pulmonology and Gerontology, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan
| | - Kazuto Matsunaga
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan
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Ohteru Y, Hamada K, Oishi K, Suizu J, Harada M, Murakawa K, Chikumoto A, Matsuda K, Uehara S, Ohata S, Murata Y, Yamaji Y, Sakamoto K, Asami-Noyama M, Edakuni N, Hirano T, Kakugawa T, Murakami T, Takemura T, Matsunaga K. Antineutrophil cytoplasmic antibody-negative granulomatosis with polyangiitis localized to the lungs. Respir Med Case Rep 2022; 36:101600. [PMID: 35169540 PMCID: PMC8829757 DOI: 10.1016/j.rmcr.2022.101600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 12/30/2021] [Accepted: 01/31/2022] [Indexed: 11/04/2022] Open
Abstract
Patients with granulomatosis with polyangiitis (GPA), formerly known as Wegener's granulomatosis, sometimes exhibit no clinical features. Here, we describe a case of antineutrophil cytoplasmic antibody (ANCA)-negative GPA presenting with only lung granuloma. A 55-year-old woman with a right upper lung mass underwent lobectomy for suspected lung cancer; however, only granuloma was detected, and the etiology was not identified. Serum ANCA results were negative. Four years postoperatively, another pulmonary nodule appeared in the left lung's apex. The kidneys and sinuses were not impaired, but re-examination of the resected specimen revealed necrotizing vasculitis and granulomas around the vessels. Thus, the patient was diagnosed with GPA localized to the lungs. Although this was a non-life-threatening disease, the patient was administered oral prednisolone (PSL) and intravenous cyclophosphamide (IVCY) to prevent fatal complications of GPA as she was non-elderly and had no comorbidities, leading to a decrease in the mass size. Detailed re-examination by expert pulmonary pathologists could aid in GPA diagnosis when clinical features are absent, as in our case. In patients with granulomas of unknown etiology, a careful multidisciplinary approach is pivotal in the diagnosis. If patients tolerate adverse effects, a PSL and IVCY combination may prevent fatal outcomes, even in patients with non-life-threatening disease.
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Hirano T, Matsunaga K, Oishi K, Doi K, Harada M, Suizu J, Murakawa K, Chikumoto A, Ohteru Y, Matsuda K, Uehara S, Hamada K, Ohata S, Murata Y, Yamaji Y, Asami-Noyama M, Edakuni N. Abundant TNF-LIGHT expression in the airways of patients with asthma with persistent airflow limitation: Association with nitrative and inflammatory profiles. Respir Investig 2021; 59:651-660. [PMID: 34244107 DOI: 10.1016/j.resinv.2021.05.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 05/12/2021] [Accepted: 05/22/2021] [Indexed: 01/15/2023]
Abstract
BACKGROUND The role of the inflammatory secretory protein TNF-LIGHT (LIGHT) in the molecular mechanisms underlying persistent airflow limitation (PAL) in asthma remains unclear. We hypothesized that high airway LIGHT expression may be a feature of asthma with PAL associated with specific expression patterns of inflammatory molecules. METHODS This hypothesis was tested in 16 patients with asthma on inhaled corticosteroid treatment. Induced sputum was collected, the expression of LIGHT and 3-nitrotyrosine (NT), which reflects the footprint of reactive nitrogen species content, was measured using immunohistochemical staining, and the inflammatory molecules in the sputum supernatant were analyzed using a magnetic bead array. RESULTS LIGHT staining in the cells had a significantly higher intensity in participants with PAL than in participants without PAL (47.9 × 104/ml vs. 5.4 × 104/ml; p < 0.05). The array analysis indicated that IL-8, IL-19, matrix metalloproteinase 2, and osteopontin, were associated with high LIGHT immunoreactivity. The fractionation of 3-NT-positive cells was positively correlated with that of LIGHT-positive cells (r = 0.57, p < 0.05) and the TGF-β1 level (r = 0.61, p < 0.05). LIGHT- and 3-NT-positive cells showed significant positive correlation with the differential cell counts of neutrophils, macrophages, and eosinophils in the induced sputum. Intense immunoreactivities of LIGHT (r = -0.54, p < 0.05) and 3-NT (r = -0.42, p = 0.1) were negatively associated with decreased forced expiratory volume in 1/forced vital capacity ratio. CONCLUSIONS The findings suggest that LIGHT is a key component in the association between airway inflammation and airflow limitation in patients with asthma, and its expression may be persistently correlated with the abundance of inflammatory cells and inflammatory and profibrogenic radical/molecules.
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Affiliation(s)
- Tsunahiko Hirano
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-kogushi, Ube, 755-8505, Japan.
| | - Kazuto Matsunaga
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-kogushi, Ube, 755-8505, Japan
| | - Keiji Oishi
- Department of Medicine and Clinical Science, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-kogushi, Ube, 755-8505, Japan
| | - Keiko Doi
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-kogushi, Ube, 755-8505, Japan
| | - Misa Harada
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-kogushi, Ube, 755-8505, Japan
| | - Junki Suizu
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-kogushi, Ube, 755-8505, Japan
| | - Keita Murakawa
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-kogushi, Ube, 755-8505, Japan
| | - Ayumi Chikumoto
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-kogushi, Ube, 755-8505, Japan
| | - Yuichi Ohteru
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-kogushi, Ube, 755-8505, Japan
| | - Kazuki Matsuda
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-kogushi, Ube, 755-8505, Japan
| | - Sho Uehara
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-kogushi, Ube, 755-8505, Japan
| | - Kazuki Hamada
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-kogushi, Ube, 755-8505, Japan
| | - Shuichiro Ohata
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-kogushi, Ube, 755-8505, Japan
| | - Yoriyuki Murata
- Department of Medicine and Clinical Science, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-kogushi, Ube, 755-8505, Japan
| | - Yoshikazu Yamaji
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-kogushi, Ube, 755-8505, Japan
| | - Maki Asami-Noyama
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-kogushi, Ube, 755-8505, Japan
| | - Nobutaka Edakuni
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-kogushi, Ube, 755-8505, Japan
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Hirano T, Doi K, Matsunaga K, Takahashi S, Donishi T, Suga K, Oishi K, Yasuda K, Mimura Y, Harada M, Suizu S, Murakawa K, Chikumoto A, Ohteru Y, Matsuda K, Uehara S, Hamada K, Ohata S, Murata Y, Yamaji Y, Asami-Noyama M, Edakuni N, Kakugawa T. A Novel Role of Growth Differentiation Factor (GDF)-15 in Overlap with Sedentary Lifestyle and Cognitive Risk in COPD. J Clin Med 2020; 9:E2737. [PMID: 32847145 PMCID: PMC7565594 DOI: 10.3390/jcm9092737] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 08/19/2020] [Accepted: 08/21/2020] [Indexed: 12/18/2022] Open
Abstract
Sedentary behavior and cognitive impairment have a direct impact on patients' outcomes. An energy metabolic disorder may be involved in the overlap of these comorbid conditions (motoric cognitive risk (MCR)) in patients with chronic obstructive pulmonary disease (COPD). We aimed to explore the linkage between a proapoptotic protein, growth differentiation factor (GDF)-15, and MCR. Physical activity (PA), cognitive function (Japanese version of the Montreal Cognitive Assessment: MOCA-J), and the serum GDF-15 levels were assessed in healthy subjects (n = 14), asthmatics (n = 22), and COPD patients (n = 28). In the entire cohort, serum GDF-15 had negative correlations with exercise (Ex) (ρ = -0.43, p < 0.001) and MoCA-J (ρ = -0.44, p < 0.001), and Ex and MOCA-J showed a positive correlation (ρ = 0.52, p < 0.0001). Compared to healthy subjects and asthmatics, COPD patients showed the highest serum GDF-15 levels and had a significantly higher proportion of subjects with MCR (both sedentary lifestyle (EX < 1.5) and cognitive risk (MoCA-J ≤ 25)). Also, we found that serum GDF-15 has a screening potential (100% sensitivity) greater than aging (67% sensitivity) for detecting MCR in COPD patients. In conclusion, higher serum GDF-15 had interrelationships with a sedentary lifestyle and cognitive risk. This protein was not disease-specific but could be a screening biomarker to detect MCR related to poor health outcomes of COPD patients.
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Affiliation(s)
- Tsunahiko Hirano
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan; (K.D.); (K.M.); (M.H.); (S.S.); (K.M.); (A.C.); (Y.O.); (K.M.); (S.U.); (K.H.); (S.O.); (Y.Y.); (M.A.-N.); (N.E.)
| | - Keiko Doi
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan; (K.D.); (K.M.); (M.H.); (S.S.); (K.M.); (A.C.); (Y.O.); (K.M.); (S.U.); (K.H.); (S.O.); (Y.Y.); (M.A.-N.); (N.E.)
| | - Kazuto Matsunaga
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan; (K.D.); (K.M.); (M.H.); (S.S.); (K.M.); (A.C.); (Y.O.); (K.M.); (S.U.); (K.H.); (S.O.); (Y.Y.); (M.A.-N.); (N.E.)
| | - Shun Takahashi
- Department of Neuropsychiatry, Wakayama Medical University, Wakayama 641-8510, Japan; (S.T.); (K.Y.)
| | - Tomohiro Donishi
- Department of System Neurophysiology, Graduate School of Wakayama Medical University, Wakayama 641-8510, Japan;
| | - Kazuyoshi Suga
- Department of Radiology, Semui PET Screening and Radiatiotherapeutic Site, St. Hill Hospital, Ube 755-0155, Japan;
| | - Keiji Oishi
- Department of Medicine and Clinical Science, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan; (K.O.); (Y.M.)
| | - Kasumi Yasuda
- Department of Neuropsychiatry, Wakayama Medical University, Wakayama 641-8510, Japan; (S.T.); (K.Y.)
| | - Yusuke Mimura
- Department of Clinical Research, National Hospital Organization Yamaguchi Ube Medical Center, Ube 755-0241, Japan;
| | - Misa Harada
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan; (K.D.); (K.M.); (M.H.); (S.S.); (K.M.); (A.C.); (Y.O.); (K.M.); (S.U.); (K.H.); (S.O.); (Y.Y.); (M.A.-N.); (N.E.)
| | - Sumiteru Suizu
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan; (K.D.); (K.M.); (M.H.); (S.S.); (K.M.); (A.C.); (Y.O.); (K.M.); (S.U.); (K.H.); (S.O.); (Y.Y.); (M.A.-N.); (N.E.)
| | - Keita Murakawa
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan; (K.D.); (K.M.); (M.H.); (S.S.); (K.M.); (A.C.); (Y.O.); (K.M.); (S.U.); (K.H.); (S.O.); (Y.Y.); (M.A.-N.); (N.E.)
| | - Ayumi Chikumoto
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan; (K.D.); (K.M.); (M.H.); (S.S.); (K.M.); (A.C.); (Y.O.); (K.M.); (S.U.); (K.H.); (S.O.); (Y.Y.); (M.A.-N.); (N.E.)
| | - Yuichi Ohteru
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan; (K.D.); (K.M.); (M.H.); (S.S.); (K.M.); (A.C.); (Y.O.); (K.M.); (S.U.); (K.H.); (S.O.); (Y.Y.); (M.A.-N.); (N.E.)
| | - Kazuki Matsuda
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan; (K.D.); (K.M.); (M.H.); (S.S.); (K.M.); (A.C.); (Y.O.); (K.M.); (S.U.); (K.H.); (S.O.); (Y.Y.); (M.A.-N.); (N.E.)
| | - Sho Uehara
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan; (K.D.); (K.M.); (M.H.); (S.S.); (K.M.); (A.C.); (Y.O.); (K.M.); (S.U.); (K.H.); (S.O.); (Y.Y.); (M.A.-N.); (N.E.)
| | - Kazuki Hamada
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan; (K.D.); (K.M.); (M.H.); (S.S.); (K.M.); (A.C.); (Y.O.); (K.M.); (S.U.); (K.H.); (S.O.); (Y.Y.); (M.A.-N.); (N.E.)
| | - Shuichiro Ohata
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan; (K.D.); (K.M.); (M.H.); (S.S.); (K.M.); (A.C.); (Y.O.); (K.M.); (S.U.); (K.H.); (S.O.); (Y.Y.); (M.A.-N.); (N.E.)
| | - Yoriyuki Murata
- Department of Medicine and Clinical Science, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan; (K.O.); (Y.M.)
| | - Yoshikazu Yamaji
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan; (K.D.); (K.M.); (M.H.); (S.S.); (K.M.); (A.C.); (Y.O.); (K.M.); (S.U.); (K.H.); (S.O.); (Y.Y.); (M.A.-N.); (N.E.)
| | - Maki Asami-Noyama
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan; (K.D.); (K.M.); (M.H.); (S.S.); (K.M.); (A.C.); (Y.O.); (K.M.); (S.U.); (K.H.); (S.O.); (Y.Y.); (M.A.-N.); (N.E.)
| | - Nobutaka Edakuni
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan; (K.D.); (K.M.); (M.H.); (S.S.); (K.M.); (A.C.); (Y.O.); (K.M.); (S.U.); (K.H.); (S.O.); (Y.Y.); (M.A.-N.); (N.E.)
| | - Tomoyuki Kakugawa
- Department of Pulmonology and Gerontology Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan;
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6
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Hamada K, Oishi K, Chikumoto A, Murakawa K, Ohteru Y, Matsuda K, Uehara S, Suetake R, Ohata S, Murata Y, Yamaji Y, Asami-Noyama M, Ito K, Edakuni N, Hirano T, Matsunaga K. Impact of sinus surgery on type 2 airway and systemic inflammation in asthma. J Asthma 2020; 58:750-758. [PMID: 32050820 DOI: 10.1080/02770903.2020.1729380] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Objective: Asthma is frequently associated with chronic rhinosinusitis with nasal polyps (CRSwNP). Although endoscopic sinus surgery (ESS) improves asthma control in CRSwNP patients with asthma, the mechanism that underlies the response to surgical treatment is still unclear. We evaluated the relevance of changes in asthma control and changes in airway/systemic inflammation in eosinophilic CRSwNP patients with not well controlled asthma who underwent ESS.Methods: We prospectively assessed changes in the asthma control questionnaire (ACQ) score, blood eosinophil counts (B-Eos), forced expiratory volume in 1 s (FEV1), and fraction of exhaled nitric oxide (FeNO) levels at 1-week before and 8 and 52 weeks after ESS.Results: Twenty-five subjects were analyzed. The ACQ score, B-Eos, and FeNO decreased, and FEV1 increased significantly after ESS. In the period from baseline to 52 weeks after ESS, changes in ACQ were significantly correlated with the changes in blood eosinophil counts (r = 0.58, p<.01) and FeNO (r = 0.45, p<.05). Ten subjects (40%) showed consistently improved asthma control at 52-weeks after ESS. In the remaining subjects, although the ACQ score temporarily improved at 8-weeks after ESS, but eventually deteriorated at 52-weeks. Higher levels of total immunoglobulin E were associated with long-term improved asthma control after ESS.Conclusions: In eosinophilic CRSwNP patients with asthma, sinus surgery impacts asthma control through the suppression of airway/systemic type 2 inflammation. The present study reinforced the common pathophysiology of type 2 inflammation between the upper and lower airways.
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Affiliation(s)
- Kazuki Hamada
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube, Yamaguchi, Japan
| | - Keiji Oishi
- Department of Medicine and Clinical Science, Graduate School of Medicine, Yamaguchi University, Ube, Yamaguchi, Japan
| | - Ayumi Chikumoto
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube, Yamaguchi, Japan
| | - Keita Murakawa
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube, Yamaguchi, Japan
| | - Yuichi Ohteru
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube, Yamaguchi, Japan
| | - Kazuki Matsuda
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube, Yamaguchi, Japan
| | - Sho Uehara
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube, Yamaguchi, Japan
| | - Ryo Suetake
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube, Yamaguchi, Japan
| | - Shuichiro Ohata
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube, Yamaguchi, Japan
| | - Yoriyuki Murata
- Department of Medicine and Clinical Science, Graduate School of Medicine, Yamaguchi University, Ube, Yamaguchi, Japan
| | - Yoshikazu Yamaji
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube, Yamaguchi, Japan
| | - Maki Asami-Noyama
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube, Yamaguchi, Japan
| | - Kosuke Ito
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube, Yamaguchi, Japan
| | - Nobutaka Edakuni
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube, Yamaguchi, Japan
| | - Tsunahiko Hirano
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube, Yamaguchi, Japan
| | - Kazuto Matsunaga
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, Ube, Yamaguchi, Japan
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7
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Ishibashi Y, Shimada T, Murakami Y, Takahashi N, Sakane T, Sugamori T, Ohata S, Inoue S, Ohta Y, Nakamura K, Shimizu H, Katoh H, Hashimoto M. An inhibitor of inducible nitric oxide synthase decreases forearm blood flow in patients with congestive heart failure. J Am Coll Cardiol 2001; 38:1470-6. [PMID: 11691525 DOI: 10.1016/s0735-1097(01)01582-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES The functional activation of inducible nitric oxide synthase (iNOS) was evaluated as a source of nitric oxide (NO) in the forearm of patients with heart failure. BACKGROUND Although endogenous NO is normally produced by constitutive NO synthase (cNOS) in patients with congestive heart failure (CHF), expression of iNOS provides an additional source of NO. However, there are no in vivo studies showing functional activation of iNOS in humans. METHODS A nonselective NOS inhibitor, N(G)-monomethyl-L-arginine (L-NMMA), and a selective inhibitor of iNOS, aminoguanidine, were administered intra-arterially in graded doses into the brachial arteries of 13 patients with CHF and 10 normal control subjects. Forearm blood flow (FBF) was measured simultaneously in the infused and noninfused arms by plethysmography. Arterial and venous plasma concentrations of nitrite/nitrate (NOx) were measured at baseline and at the highest dose of each drug. RESULTS L-NMMA significantly reduced the FBF ratio between the infused and noninfused arms in both the control and patient groups (35 +/- 12% and 34 +/- 10%, respectively; both p < 0.001). Aminoguanidine at the same concentration significantly reduced the ratio in the patient group (15 +/- 9%, p < 0.01), with no change in the control group. The arterial NOx concentration was not affected by either drug; however, venous NOx concentrations were significantly decreased in both the control and patient groups by L-NMMA (18 +/- 5% and 18 +/- 17%, respectively; both p < 0.05) and in the patient group only by aminoguanidine (7 +/- 6%, p < 0.05). CONCLUSIONS These findings suggest that NO production in the forearms of patients with CHF is induced partly by iNOS activation, whereas in normal subjects, it can be ascribed to cNOS activation.
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Affiliation(s)
- Y Ishibashi
- Fourth Department of Internal Medicine, Izumo, Japan.
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8
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Takahashi N, Ishibashi Y, Shimada T, Sakane T, Ohata S, Sugamori T, Ohta Y, Inoue S, Nakamura K, Shimizu H, Katoh H, Sano K, Murakami Y, Hashimoto M. Atrial fibrillation impairs endothelial function of forearm vessels in humans. J Card Fail 2001; 7:45-54. [PMID: 11264550 DOI: 10.1054/jcaf.2001.22107] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
BACKGROUND Although there have been many studies on the effects of atrial fibrillation (AF) on cardiac function, few studies have been done on its effects on endothelial function. The present study was designed to examine the effects of AF on endothelial function in human subjects. METHODS AND RESULTS Changes in forearm blood flow (FBF) induced by acetylcholine and nitroglycerin were measured by using plethysmography in 14 patients with lone AF, 13 patients with AF and underlying heart disease, and 12 normal control subjects. In the patients, these measurements were repeated after cardioversion. Although baseline FBF was the same in the 3 groups, acetylcholine-induced increases in FBF were significantly smaller in both patient groups than in the control group, and FBF increases were particularly depressed in AF patients with underlying heart disease. After restoration of sinus rhythm by cardioversion, FBF response to the highest dose of acetylcholine increased by 46% in patients with lone AF (n = 10) and by 90% in AF patients with underlying heart disease (n = 11). Nitroglycerin-induced vasodilatation was the same in all 3 groups and was not affected by cardioversion. CONCLUSIONS These findings suggest that endothelium-dependent vasodilatation is impaired by AF and improves after sinus rhythm is restored.
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Affiliation(s)
- N Takahashi
- Fourth Department of Internal Medicine, Shimane Medical University, Izumo City, Shimane, Japan
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9
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Sakane T, Ishibashi Y, Shimada T, Takahashi N, Sugamori T, Hirano Y, Ohata S, Inoue SI, Nakamura K, Murakami Y. Impaired vasodilatation response to amrinone in the forearm of patients with congestive heart failure: role of endothelium-derived nitric oxide. J Cardiovasc Pharmacol 2000; 36:188-95. [PMID: 10942160 DOI: 10.1097/00005344-200008000-00008] [Citation(s) in RCA: 3] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Recent in vitro experiments have shown that amrinone enhances the release of nitric oxide (NO) from the endothelium and induces NO mediated vasodilatation. This in vivo study examined whether amrinone causes vasodilatation mediated by endothelium-derived NO, and whether this effect is attenuated in patients with endothelial dysfunction. Eight patients with congestive heart failure and 10 age- and sex-matched healthy volunteers were studied. Forearm blood flow (FBF) was measured before and during infusion of drugs of acetylcholine, amrinone, and nitroglycerin in incremental doses. After the completion of these measurements, 100 micromol of N(G)-monomethyl-L-arginine (L-NMMA) was infused intraarterially. Thereafter, FBF measurement in response to incremental doses of amrinone was repeated. Infusion of incremental doses of amrinone caused a comparable increase in amrinone plasma concentration in both groups. Baseline FBF was 3.2+/-0.79 ml/min/100 ml in controls vs. 2.91+/-0.79 ml/min/100 ml in patients (p = 0.43). In both groups, FBF increased in response to acetylcholine, amrinone, and nitroglycerin. During infusion of the highest dose of nitroglycerin, FBF was not different between the two groups (p = 0.51); however, FBF during infusion of the highest doses of acetylcholine and amrinone was significantly less in patients than in controls: 9.75+/-2.69 vs. 24.87+/-8.65 ml/min/100 ml (p < 0.001) and 3.79+/-1.21 vs. 7.15+/-2.06 ml/min/100 ml (p < 0.001), respectively. L-NMMA significantly depressed the increase in FBF in response to amrinone in controls, but not in patients. In conclusion, the selective PDE III inhibitor, amrinone, has endothelium-derived NO-mediated vasodilating effects in addition to direct effects. This property may be impaired in patients with endothelial dysfunction.
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Affiliation(s)
- T Sakane
- The Fourth Department of Internal Medicine, Shimane Medical University, Izumo City, Japan
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10
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Ohata S, Ishibashi Y, Hirano Y, Sakane T, Takahashi N, Sugamori T, Inoue S, Katoh H, Ochiai K, Sano K, Murakami Y, Shimada T. [Relationship between endothelial function and female hormone level in very old females: evaluation from ischemic reactive hyperemic response in forearm vessels]. J Cardiol 2000; 35:417-24. [PMID: 10884978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Recently, the mechanism of longevity in females was proposed to be associated with female hormones. This study examined the effect of aging and sex on vascular endothelial function, and the relationship between female hormone level and endothelial function by ischemic reactive hyperemic response in the forearm using plethysmography. The study population consisted of 246 healthy subjects aged from 20 to 76 years (119 males, 127 females) and 20 healthy females aged 85 years and older (85 to 103 years; mean age 94 years) without distinct cardiovascular disease, hypertension, diabetes mellitus, renal disease, liver dysfunction or anemia. Levels of the female hormones, estradiol and estriol, were measured in females aged more than 85 years. The duration of reactive hyperemia decreased with aging, but the difference between males and females was not significant at any age. In females, the duration was markedly decreased from 110 +/- 36 sec in the fifties to 81 +/- 29 sec in the sixties or older (p < 0.05). Excess flow also showed similar changes to the duration of reactive hyperemia. The duration of reactive hyperemia and excess flow in females aged 85 years and older were similar to those in the fifties, but was significantly longer than those in females 60 years or older. The concentrations of estradiol (44.9 +/- 27.1 pg/ml) and estriol (22.1 +/- 13.4 pg/ml) in females aged 85 years were higher than in the sixties. There was a positive correlation between the duration of reactive hyperemia and the concentration of estradiol (r = 0.56, p < 0.01) or estriol (r = 0.57, p < 0.01). In summary, vascular endothelial function was impaired gradually with aging, but preservation of the function in healthy, very old females was closely associated with levels of female hormone.
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Affiliation(s)
- S Ohata
- Fourth Department of Internal Medicine, Shimane Medical University
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11
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Igarashi K, Sugiyama Y, Kasuya F, Saiki K, Yamakawa T, Ohata S. Determination of 1-methyl-1,2,3,4-tetrahydroisoquinoline in mouse brain after treatment with haloperidol by gas chromatography-selected ion monitoring. J Chromatogr B Biomed Sci Appl 1999; 731:53-8. [PMID: 10491989 DOI: 10.1016/s0378-4347(99)00187-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The content of the endogenous amine, 1-methyl-1,2,3,4-tetrahydroisoquinoline (1-MeTIQ), in mouse brain, treated with the antipsychotic agent haloperidol (HP) was determined by GC-SIM (selected ion monitoring) system. 1-MeTIQ in brain was extracted with chloroform at pH 11-12 and was detected as PFP derivative by GC-SIM. The 1-MeTIQ contents in mouse brains following intraperitoneal administration of HP or its dehydrated product, HPTP (1 and 4 mg/kg per day, for four days), were markedly reduced compared with control groups. This result agrees well with the findings in human idiopathic parkinsonianism and in MPTP-treated mouse brain. In addition, this finding suggests that the change of the endogenous amine 1-MeTIQ content in the brain plays an important role in the pathogenesis of toxin-induced parkinsonism.
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Affiliation(s)
- K Igarashi
- Biochemical Toxicology Laboratory, Faculty of Pharmaceutical Sciences, Kobegakuin University, Kobe, Japan
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12
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Miki H, Masuda E, Ohata S, Komaki K, Hirokawa M, Uehara H, Asano H, Monden Y. Late recurrence of acinic cell carcinoma of the parotid gland. J Med Invest 1999; 46:213-6. [PMID: 10687318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
Acinic cell carcinoma of the salivary glands is a rare cancer representing a low grade malignancy. The recurrence of a tumor is sometimes encountered, usually within 5 years of initial operation. We describe an unusual recurrence after a long interval following primary surgery. In 1987, a 60-year-old woman underwent excision of a mass in the superficial lobe of the right parotid gland under the preoperative diagnosis of a benign tumor. A histologic diagnosis of acinic cell carcinoma was made by examining sections from the resected mass. The patient noted several small nodules in the right parotid region in 1995, but she did not visit our clinic until 1998 when tenderness developed. A locally recurrent tumor and cervical lymph nodes containing metastases were resected and postoperative radiotherapy was given 11 years after the first operation. At least 10 years of follow-up may be necessary for patients with acinic cell carcinoma because of slow-tumor growth.
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Affiliation(s)
- H Miki
- Second Department of Surgery, University of Tokushima School of Medicine, Japan
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13
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Sakane T, Ishibashi Y, Shimada T, Inoue S, Sugamori T, Hirano Y, Takahashi N, Ohata S, Asanuma T, Kato H, Yoshitomi H, Sano K, Murakami Y, Murakami R. [Endothelial-derived nitric oxide mediates the peripheral vasodilatory effects of amrinone in humans]. J Cardiol 1999; 33:13-9. [PMID: 10028457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Amrinone, which is used for the treatment of acute congestive heart failure, has vasodilatory and positive inotropic effects through the increment of intracellular cyclic adenosine monophosphate. Recent in vitro investigations have shown that amrinone has an endothelium-dependent vasodilatory effect. The present study examined whether amrinone shows this endothelium-dependent vasodilatory effect in human peripheral vessels. Forearm blood flow during intra-arterial infusion of graded doses (12.5, 25, 50, 100, 200 micrograms/min) of amrinone was measured using plethysmography in 10 healthy subjects without organic vascular disease before and after nitric oxide synthase blocking with NG-monomethyl-L-arginine (L-NMMA, 400 mumol). The graded dose of amrinone produced progressive increases in amrinone plasma concentrations, and a dose over 100 micrograms/min caused amrinone plasma concentrations of more than 1.0 microgram/ml. The increase in forearm blood flow in response to amrinone was significantly depressed after L-NMMA doses of less than 100 micrograms/min, but the increase in forearm blood flow during infusion of higher doses (100, 200 micrograms/min) was not affected by L-NMMA. These results suggest that endothelial-derived nitric oxide may partially contribute to amrinone-induced vasodilation in humans. Thus, the vasodilatory effect of amrinone might be impaired in patients with endothelial dysfunction.
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Affiliation(s)
- T Sakane
- Fourth Department of Internal Medicine, Shimane Medical University
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14
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Affiliation(s)
- T Inoue
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo 142, Japan
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15
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Harata M, Ouchi K, Ohata S, Kikuchi A, Mizuno S. Purification and characterization of W-protein. A DNA-binding protein showing high affinity for the W chromosome-specific repetitive DNA sequences of chicken. J Biol Chem 1988; 263:13952-61. [PMID: 2843543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
A protein component, which binds with high affinity to the W chromosome-specific XhoI family repetitive DNA of chicken (Tone, M., Sakaki, Y., Hashiguchi, T., and Mizuno, S. (1984) Chromosoma (Berl.) 89, 228-237), was detected in the 0.35 M NaCl extract of the female chicken liver nuclei. This protein, designated as W-protein, was substantially purified by phosphocellulose, hydroxyapatite, and DEAE-Toyopearl column chromatography. Molecular weight of W-protein was estimated to be about 72,000 by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, but it seems to form multimeric structure having apparent molecular weight of about 2.3 X 10(6) under nondenaturing conditions. W-Protein binds strongly to both 0.7- and 1.1-kb repeating units of the XhoI family, both of which show curved DNA characteristics, and weakly to the AATAT-satellite sequence of Drosophila melanogaster. Stable binding of W-protein requires greater than or equal to 300 base pairs of the 0.7-kilobases sequence, or more than 14 tandem repeats of the 21-base pair internal repeating unit of the 0.7-kilobase sequence. DNA footprint analysis and effects of some DNA-binding compounds suggest that the DNA double helix wraps around W-protein or its multimeric form contacting through A-T-rich minor grooves. A possible role of W-protein in the formation of W heterochromatic body is discussed.
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Affiliation(s)
- M Harata
- Department of Agricultural Chemistry, Tohoku University, Sendai, Japan
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16
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Harata M, Ouchi K, Ohata S, Kikuchi A, Mizuno S. Purification and characterization of W-protein. A DNA-binding protein showing high affinity for the W chromosome-specific repetitive DNA sequences of chicken. J Biol Chem 1988. [DOI: 10.1016/s0021-9258(18)68336-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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17
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Ohata S, Aisawa K, Oishi T, Sadatsuki T, Kurata K. [Analysis of chick's vitelline membrane, developing neurula, and central nervous system by the application of infrared spectroscopy]. Zasshi Tokyo Ika Daigaku 1966; 24:497-504. [PMID: 6009095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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18
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Ohata S, Aisawa K, Kuboshima H, Kurata K, Oishi T. [Effects of NaCl, KCl, MgCl-2, and CaCl-2 solutions upon the rotatory polarization of unfertile vitelline membrane of a white Leghorn egg]. Zasshi Tokyo Ika Daigaku 1966; 24:505-12. [PMID: 6009096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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19
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Ohata S. [Spectrum analysis of vitelline membrane and germinal cells]. Zasshi Tokyo Ika Daigaku 1966; 24:349-50. [PMID: 6009979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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