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Seol J, Chiba S, Kawana F, Tsumoto S, Masaki M, Tominaga M, Amemiya T, Tani A, Hiei T, Yoshimine H, Kondo H, Yanagisawa M. Validation of sleep-staging accuracy for an in-home sleep electroencephalography device compared with simultaneous polysomnography in patients with obstructive sleep apnea. Sci Rep 2024; 14:3533. [PMID: 38347028 PMCID: PMC10861536 DOI: 10.1038/s41598-024-53827-1] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 02/05/2024] [Indexed: 02/15/2024] Open
Abstract
Efforts to simplify standard polysomnography (PSG) in laboratories, especially for obstructive sleep apnea (OSA), and assess its agreement with portable electroencephalogram (EEG) devices are limited. We aimed to evaluate the agreement between a portable EEG device and type I PSG in patients with OSA and examine the EEG-based arousal index's ability to estimate apnea severity. We enrolled 77 Japanese patients with OSA who underwent simultaneous type I PSG and portable EEG monitoring. Combining pulse rate, oxygen saturation (SpO2), and EEG improved sleep staging accuracy. Bland-Altman plots, paired t-tests, and receiver operating characteristics curves were used to assess agreement and screening accuracy. Significant small biases were observed for total sleep time, sleep latency, awakening after falling asleep, sleep efficiency, N1, N2, and N3 rates, arousal index, and apnea indexes. All variables showed > 95% agreement in the Bland-Altman analysis, with interclass correlation coefficients of 0.761-0.982, indicating high inter-instrument validity. The EEG-based arousal index demonstrated sufficient power for screening AHI ≥ 15 and ≥ 30 and yielded promising results in predicting apnea severity. Portable EEG device showed strong agreement with type I PSG in patients with OSA. These suggest that patients with OSA may assess their condition at home.
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Affiliation(s)
- Jaehoon Seol
- Faculty of Health and Sports Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8574, Japan.
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, 1-2 Kasuga, Tsukuba, Ibaraki, 305-8550, Japan.
- Department of Frailty Research, Center for Gerontology and Social Science, National Center for Geriatrics and Gerontology, Obu, Aichi, 474-8511, Japan.
| | - Shigeru Chiba
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, 1-2 Kasuga, Tsukuba, Ibaraki, 305-8550, Japan
| | - Fusae Kawana
- Cardiovascular Respiratory Sleep Medicine, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Saki Tsumoto
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, 1-2 Kasuga, Tsukuba, Ibaraki, 305-8550, Japan
- Ph.D. Program in Humanics, University of Tsukuba, Tsukuba, Ibaraki, 305-8575, Japan
| | - Minori Masaki
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, 1-2 Kasuga, Tsukuba, Ibaraki, 305-8550, Japan
- Ph.D. Program in Humanics, University of Tsukuba, Tsukuba, Ibaraki, 305-8575, Japan
| | | | | | | | | | - Hiroyuki Yoshimine
- Department of Respiratory Medicine, Inoue Hospital, Nagasaki, Nagasaki, 850-0045, Japan
| | - Hideaki Kondo
- Department of General Medicine, Institute of Biomedical Sciences, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, 852-8102, Japan
| | - Masashi Yanagisawa
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, 1-2 Kasuga, Tsukuba, Ibaraki, 305-8550, Japan.
- S'UIMIN, Inc., Tokyo, 151-0061, Japan.
- Life Science Center for Survival Dynamics (TARA), University of Tsukuba, Ibaraki, 305-8577, Japan.
- R&D Center for Frontiers of Mirai in Policy and Technology (F-MIRAI), University of Tsukuba, Ibaraki, 305-8575, Japan.
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA.
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Misaki T, Murao F, Shinomiya K, Tani A, Yamada M, Mitamura Y. A Case of Osteopetrosis with Orbital Inflammation Secondary to Maxillary Osteomyelitis. Case Rep Ophthalmol 2024; 15:92-99. [PMID: 38288029 PMCID: PMC10824520 DOI: 10.1159/000536140] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 12/26/2023] [Indexed: 01/31/2024] Open
Abstract
Introduction Osteopetrosis is a rare heritable disorder characterized by increased bone density resulting from osteoclast dysfunction. Major complications include bone fracture, osteomyelitis, anemia, and cranial nerve compression. Optic atrophy can occur due to compression of the optic nerve. Although osteomyelitis of the jaw is a common complication, it rarely occurs in the maxilla. Here, we report a case of a 74-year-old female with osteopetrosis who developed maxillary osteomyelitis, leading to orbital inflammation. Case Presentation She was referred to our clinic for 2 months of ptosis and swelling of the left eyelid and temporal region. Previous imaging revealed a left intraorbital occupying lesion, but a biopsy of the temporal subcutaneous tissue did not provide a definitive diagnosis. After 7 months, she presented with severe temporal swelling and purulent discharge. Upon examination, maxillary osteomyelitis resulting from caries of the upper jaw was observed. Treatment with oral antibiotics, drainage of the temporal skin fistula, and regular cleaning of the maxillary drainage improved her symptoms. Conclusion This is a rare case of maxillary osteomyelitis associated with osteopetrosis, causing orbital inflammation.
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Affiliation(s)
- Takafumi Misaki
- Department of Ophthalmology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Fumiko Murao
- Department of Ophthalmology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Kayo Shinomiya
- Department of Ophthalmology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Akihiro Tani
- Department of Ophthalmology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Masayuki Yamada
- Department of Ophthalmology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Yoshinori Mitamura
- Department of Ophthalmology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
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Iwagami M, Seol J, Hiei T, Tani A, Chiba S, Kanbayashi T, Kondo H, Tanaka T, Yanagisawa M. Association between electroencephalogram-based sleep characteristics and physical health in the general adult population. Sci Rep 2023; 13:21545. [PMID: 38066043 PMCID: PMC10709300 DOI: 10.1038/s41598-023-47979-9] [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: 03/25/2023] [Accepted: 11/20/2023] [Indexed: 12/18/2023] Open
Abstract
We examined the associations between electroencephalogram (EEG)-based sleep characteristics and physical health parameters in general adults via a cross-sectional study recruiting 100 volunteers aged 30-59 years. Sleep characteristics were measured at home using a portable multichannel electroencephalography recorder. Using the k-means + + clustering method, according to 10 EEG-based parameters, participants were grouped into better (n = 39), middle (n = 46), and worse (n = 15) sleep groups. Comparing 50 physical health parameters among the groups, we identified four signals of difference (P < 0.05), including systolic (sBP) and diastolic blood pressure (dBP), γ-glutamyl transpeptidase (γ-GTP), and serum creatinine, where sBP reached a Bonferroni-corrected threshold (P < 0.001). The sBP was higher by 7.9 (95% confidence interval 1.9-13.9) and 15.7 (7.3-24.0) mmHg before adjustment and 5.4 (- 0.1-10.9) and 8.7 (1.1-16.3) mmHg after adjustment for age, sex, body mass index, smoking, drinking habits, and 3% oxygen desaturation index in the middle and worse sleep groups, respectively, than in the better group. As another approach, among 500 combinations of EEG-based and physical health parameters, there were 45 signals of correlation, of which 4 (N1% and sBP, dBP, γ-GTP, and triglycerides) reached a Bonferroni-corrected threshold (P < 0.0001). Thus, EEG-based sleep characteristics are associated with several physical health parameters, particularly sBP.
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Affiliation(s)
- Masao Iwagami
- International Institute for Integrative Sleep Medicine (IIIS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan.
- Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, Keppel Street, London, WC1E 7HT, UK.
- Department of Health Services Research, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan.
| | - Jaehoon Seol
- International Institute for Integrative Sleep Medicine (IIIS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
- Research Center for Overwork-Related Disorders, National Institute of Occupational Safety and Health, Japan (JNIOSH), Kawasaki, Kanagawa, 214-8585, Japan
- R&D Center for Tailor-Made QOL, University of Tsukuba, Tsukuba, Ibaraki, 305-8575, Japan
| | - Tetsuro Hiei
- S'UIMIN Inc., 1-51-1 Hatsudai, Shibuya, Tokyo, 151-0061, Japan
| | - Akihiro Tani
- S'UIMIN Inc., 1-51-1 Hatsudai, Shibuya, Tokyo, 151-0061, Japan
| | - Shigeru Chiba
- International Institute for Integrative Sleep Medicine (IIIS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
- Ibaraki Prefectural Medical Center of Psychiatry, 654 Asahimachi, Kasama, Ibaraki, 309-1717, Japan
- Minamisaitama Hospital, 252 Masumori, Koshigaya, Ibaraki, 343-0012, Japan
| | - Takashi Kanbayashi
- International Institute for Integrative Sleep Medicine (IIIS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
- Ibaraki Prefectural Medical Center of Psychiatry, 654 Asahimachi, Kasama, Ibaraki, 309-1717, Japan
| | - Hideaki Kondo
- International Institute for Integrative Sleep Medicine (IIIS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
- Department of General Medicine, Institute of Biomedical Sciences, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, 852-8521, Japan
| | - Takashi Tanaka
- KRD Nihombashi, 4-4-2 Nihonbashi Honcho, Chuo, Tokyo, 103-0023, Japan
| | - Masashi Yanagisawa
- International Institute for Integrative Sleep Medicine (IIIS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan.
- S'UIMIN Inc., 1-51-1 Hatsudai, Shibuya, Tokyo, 151-0061, Japan.
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Yasui S, Kaneko Y, Yamagami H, Hosoki M, Hori T, Tani A, Hara T, Kurahashi K, Harada T, Nakamura S, Otoda T, Yuasa T, Mori H, Kuroda A, Endo I, Matsuhisa M, Soeki T, Aihara KI. Dehydroepiandrosterone Sulfate, an Adrenal Androgen, Is Inversely Associated with Prevalence of Dynapenia in Male Individuals with Type 2 Diabetes. Metabolites 2023; 13:1129. [PMID: 37999225 PMCID: PMC10673440 DOI: 10.3390/metabo13111129] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/13/2023] [Accepted: 11/01/2023] [Indexed: 11/25/2023] Open
Abstract
Dehydroepiandrosterone sulfate (DHEAS) is thought to be associated with life expectancy and anti-aging. Although skeletal muscle disorders are often found in diabetic people, the clinical significance of DHEAS in skeletal muscle remains unclear. Therefore, we aimed to determine whether DHEAS is associated with the development of skeletal muscle disorders in individuals with type 2 diabetes (T2D). A cross-sectional study was conducted in 361 individuals with T2D. Serum DHEAS levels, skeletal muscle mass index (SMI), handgrip strength (HS), and gait speed (GS) were measured in the participants. Pre-sarcopenia, sarcopenia, and dynapenia were defined according to the definitions of the AWGS 2019 criteria. DHEAS level was positively associated with HS but not with SMI or GS after adjustment of confounding factors. Multiple logistic regression analyses in total subjects showed that DHEAS level had an inverse association with the prevalence of dynapenia but not with the prevalence of pre-sarcopenia or sarcopenia. Furthermore, a significant association between DHEAS level and dynapenia was found in males but not in females. ROC curve analysis indicated that cutoff values of serum DHEAS for risk of dynapenia in males was 92.0 μg/dL. Therefore, in male individuals with T2D who have low serum levels of DHEAS, adequate exercise might be needed to prevent dynapenia.
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Affiliation(s)
- Saya Yasui
- Department of Internal Medicine, Anan Medical Center, 6-1 Kawahara Takarada-cho, Anan 774-0045, Japan; (S.Y.); (Y.K.); (H.Y.); (M.H.); (T.H.); (A.T.)
| | - Yousuke Kaneko
- Department of Internal Medicine, Anan Medical Center, 6-1 Kawahara Takarada-cho, Anan 774-0045, Japan; (S.Y.); (Y.K.); (H.Y.); (M.H.); (T.H.); (A.T.)
| | - Hiroki Yamagami
- Department of Internal Medicine, Anan Medical Center, 6-1 Kawahara Takarada-cho, Anan 774-0045, Japan; (S.Y.); (Y.K.); (H.Y.); (M.H.); (T.H.); (A.T.)
- Department of Hematology, Endocrinology and Metabolism, Tokushima University Graduate School of Biomedical Sciences, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan; (T.H.); (K.K.); (T.H.)
| | - Minae Hosoki
- Department of Internal Medicine, Anan Medical Center, 6-1 Kawahara Takarada-cho, Anan 774-0045, Japan; (S.Y.); (Y.K.); (H.Y.); (M.H.); (T.H.); (A.T.)
| | - Taiki Hori
- Department of Internal Medicine, Anan Medical Center, 6-1 Kawahara Takarada-cho, Anan 774-0045, Japan; (S.Y.); (Y.K.); (H.Y.); (M.H.); (T.H.); (A.T.)
- Department of Hematology, Endocrinology and Metabolism, Tokushima University Graduate School of Biomedical Sciences, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan; (T.H.); (K.K.); (T.H.)
| | - Akihiro Tani
- Department of Internal Medicine, Anan Medical Center, 6-1 Kawahara Takarada-cho, Anan 774-0045, Japan; (S.Y.); (Y.K.); (H.Y.); (M.H.); (T.H.); (A.T.)
| | - Tomoyo Hara
- Department of Hematology, Endocrinology and Metabolism, Tokushima University Graduate School of Biomedical Sciences, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan; (T.H.); (K.K.); (T.H.)
| | - Kiyoe Kurahashi
- Department of Hematology, Endocrinology and Metabolism, Tokushima University Graduate School of Biomedical Sciences, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan; (T.H.); (K.K.); (T.H.)
| | - Takeshi Harada
- Department of Hematology, Endocrinology and Metabolism, Tokushima University Graduate School of Biomedical Sciences, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan; (T.H.); (K.K.); (T.H.)
| | - Shingen Nakamura
- Department of Community Medicine and Medical Science, Tokushima University Graduate School of Biomedical Sciences, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan; (S.N.); (T.O.); (T.Y.); (T.S.)
| | - Toshiki Otoda
- Department of Community Medicine and Medical Science, Tokushima University Graduate School of Biomedical Sciences, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan; (S.N.); (T.O.); (T.Y.); (T.S.)
| | - Tomoyuki Yuasa
- Department of Community Medicine and Medical Science, Tokushima University Graduate School of Biomedical Sciences, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan; (S.N.); (T.O.); (T.Y.); (T.S.)
| | - Hiroyasu Mori
- Diabetes Therapeutics and Research Center, Institute of Advanced Medical Sciences, Tokushima University, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan; (H.M.); (A.K.); (M.M.)
| | - Akio Kuroda
- Diabetes Therapeutics and Research Center, Institute of Advanced Medical Sciences, Tokushima University, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan; (H.M.); (A.K.); (M.M.)
| | - Itsuro Endo
- Department of Bioregulatory Sciences, Tokushima University Graduate School of Biomedical Sciences, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan;
| | - Munehide Matsuhisa
- Diabetes Therapeutics and Research Center, Institute of Advanced Medical Sciences, Tokushima University, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan; (H.M.); (A.K.); (M.M.)
| | - Takeshi Soeki
- Department of Community Medicine and Medical Science, Tokushima University Graduate School of Biomedical Sciences, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan; (S.N.); (T.O.); (T.Y.); (T.S.)
| | - Ken-ichi Aihara
- Department of Internal Medicine, Anan Medical Center, 6-1 Kawahara Takarada-cho, Anan 774-0045, Japan; (S.Y.); (Y.K.); (H.Y.); (M.H.); (T.H.); (A.T.)
- Department of Community Medicine and Medical Science, Tokushima University Graduate School of Biomedical Sciences, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan; (S.N.); (T.O.); (T.Y.); (T.S.)
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Oeun B, Hikoso S, Nakatani D, Mizuno H, Kitamura T, Okada K, Dohi T, Sotomi Y, Kida H, Sunaga A, Sato T, Matsuoka Y, Kurakami H, Yamada T, Tamaki S, Seo M, Yano M, Hayashi T, Nakagawa A, Nakagawa Y, Yamada T, Yasumura Y, Sakata Y, Watanabe T, Yamada T, Hayashi T, Higuchi Y, Masuda M, Asai M, Mano T, Fuji H, Tamaki S, Masuda D, Shutta R, Yamashita S, Sairyo M, Nakagawa Y, Abe H, Ueda Y, Matsumura Y, Nagai K, Yano M, Nishino M, Tanouchi J, Arita Y, Ogasawara N, Ishizu T, Ichikawa M, Takano Y, Rin E, Shinoda Y, Tachibana K, Hoshida S, Izumi M, Yamamoto H, Kato H, Nakatani K, Yasuga Y, Nishio M, Hirooka K, Yoshimura T, Kashiwase K, Hasegawa S, Tani A, Okumoto Y, Makino Y, Onishi T, Iwakura K, Kijima Y, Kitao T, Fujita M, Harada K, Kumada M, Nakagawa O, Nakagawa A, Yasumura Y, Matsuoka Y, Sato T, Sunaga A, Oeun B, Kida H, Sotomi Y, Dohi T, Akazawa Y, Nakamoto K, Okada K, Sera F, Kioka H, Ohtani T, Takeda T, Nakatani D, Mizuno H, Hikoso S, Sakata Y. Clinical trajectories and outcomes of patients with heart failure with preserved ejection fraction with normal or indeterminate diastolic function. Clin Res Cardiol 2023; 112:145-157. [PMID: 36357804 DOI: 10.1007/s00392-022-02121-z] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Accepted: 10/19/2022] [Indexed: 11/12/2022]
Abstract
BACKGROUND We recently reported that nearly half of patients with heart failure with preserved ejection fraction (HFpEF) did not show echocardiographic diastolic dysfunction (DD), but had normal diastolic function (ND) or indeterminate diastolic function (ID). However, the clinical course and outcomes of patients with HFpEF with ND or ID (ND/ID) remain unknown. METHODS From the PURSUIT-HFpEF registry, we extracted 289 patients with HFpEF with ND/ID at discharge who had echocardiographic data at 1-year follow-up. Patients were classified according to the status of progression from ND/ID to DD at 1 year. Primary endpoint was a composite of all-cause death or HF rehospitalization. RESULTS Median age was 81 years, and 138 (47.8%) patients were female. At 1 year, 107 (37%) patients had progressed to DD. The composite endpoint occurred in 90 (31.1%) patients. Compared to patients without progression to DD, those with progression had a significantly higher cumulative rate of the composite endpoint (P < 0.001) and HF rehospitalization (P < 0.001) after discharge and at the 1-year landmark (P = 0.030 and P = 0.001, respectively). Progression to DD was independently associated with the composite endpoint (hazard ratio (HR): 2.014, 95%CI 1.239-3.273, P = 0.005) and HF rehospitalization (HR: 2.362, 95%CI 1.402-3.978) after discharge. Age (odds ratio (OR): 1.043, 95%CI 1.004-1.083, P = 0.031), body mass index (BMI) (OR: 1.110, 95%CI 1.031-1.195, P = 0.006), and albumin (OR: 0.452, 95%CI 0.211-0.969, P = 0.041) were independently associated with progression from ND/ID to DD. CONCLUSIONS More than one-third of HFpEF patients with ND/ID progressed to DD at 1 year and had poor outcomes. Age, BMI and albumin were independently associated with this progression. UMIN-CTR ID UMIN000021831.
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Affiliation(s)
- Bolrathanak Oeun
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, 565-0871, Japan
| | - Shungo Hikoso
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, 565-0871, Japan.
| | - Daisaku Nakatani
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, 565-0871, Japan
| | - Hiroya Mizuno
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, 565-0871, Japan
| | - Tetsuhisa Kitamura
- Department of Social and Environmental Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, 565-0871, Japan
| | - Katsuki Okada
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, 565-0871, Japan.,Department of Transformative System for Medical Information, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, 565-0871, Japan
| | - Tomoharu Dohi
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, 565-0871, Japan
| | - Yohei Sotomi
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, 565-0871, Japan
| | - Hirota Kida
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, 565-0871, Japan
| | - Akihiro Sunaga
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, 565-0871, Japan
| | - Taiki Sato
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, 565-0871, Japan
| | - Yuki Matsuoka
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, 565-0871, Japan
| | - Hiroyuki Kurakami
- Department of Medical Innovation, Osaka University Hospital, 2-15 Yamadaoka, Suita, 565-0871, Japan
| | - Tomomi Yamada
- Department of Medical Innovation, Osaka University Hospital, 2-15 Yamadaoka, Suita, 565-0871, Japan
| | - Shunsuke Tamaki
- Department of Cardiology, Rinku General Medical Center, 2-23 Ourai-Kita, Rinku, Izumisano, Osaka, 598-8577, Japan
| | - Masahiro Seo
- Division of Cardiology, Osaka General Medical Center, 3-1-56 Bandaihigashi, Osaka, 558-8558, Japan
| | - Masamichi Yano
- Division of Cardiology, Osaka Rosai Hospital, 3-1179 Nagasonecho, Kita-Ku, Sakai, Osaka, 591-8025, Japan
| | - Takaharu Hayashi
- Cardiovascular Division, Osaka Police Hospital, 10-31 Kitayamacho, Tennojiku, Osaka, 543-0035, Japan
| | - Akito Nakagawa
- Division of Cardiology, Amagasaki Chuo Hospital, 1-12-1 Shioe, Amagasaki, Hyogo, 661-0976, Japan.,Department of Medical Informatics, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, 565-0871, Japan
| | - Yusuke Nakagawa
- Division of Cardiology, Kawanishi City Hospital, 5-21-1 Higashiuneno, Kawanishi, 666-0117, Japan
| | - Takahisa Yamada
- Division of Cardiology, Osaka General Medical Center, 3-1-56 Bandaihigashi, Osaka, 558-8558, Japan
| | - Yoshio Yasumura
- Division of Cardiology, Amagasaki Chuo Hospital, 1-12-1 Shioe, Amagasaki, Hyogo, 661-0976, Japan
| | - Yasushi Sakata
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, 565-0871, Japan
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Tani A, Tarumi Y, Kakibuchi A, Aoyama K, Kokabu T, Kataoka H, Yoriki K, Nagamine M, Mori T. Giant retroperitoneal dedifferentiated liposarcoma mimicking ovarian cancer: A case report. Gynecol Oncol Rep 2022; 44:101088. [PMID: 36299399 PMCID: PMC9589010 DOI: 10.1016/j.gore.2022.101088] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/11/2022] [Accepted: 10/17/2022] [Indexed: 11/06/2022] Open
Abstract
Clinical features of the dedifferentiated subtype of LPS that has a diameter of >30 cm remains unknown. Surgical resection entails a high risk due to the size and anatomical location and difficulty in preoperative diagnosis. CT is the most useful imaging method for evaluating tumor location, size, origin, and relationship to adjacent organs. Retroperitoneal LPS should be considered in the case of a giant intra-abdominal tumor with a fatty component. Surgical resection is the mainstay of treatment for retroperitoneal LPS.
Retroperitoneal liposarcoma is a rare tumor, and its dedifferentiated subtype and a larger diameter are associated with a poor prognosis. However, there are few reports of retroperitoneal liposarcomas, both with a dedifferentiated subtype and a diameter of >30 cm. We report a case of a giant retroperitoneal liposarcoma with a dedifferentiated subtype. A 78-year-old woman presented to our hospital with abdominal distension and loss of appetite. Computed tomography and magnetic resonance imaging findings revealed a 35-cm-diameter solid tumor in the peritoneal cavity. CA125 (64.8 U/mL) and HE4 (229.0 pmol/L) were elevated preoperatively raising suspicion for ovarian malignancy. However, intraoperative findings revealed that the tumor originated in the retroperitoneal cavity. Reductive surgery for the tumor and partial resection of the sigmoid colon and left ureter were performed, and pathological examination confirmed a retroperitoneal dedifferentiated liposarcoma. Although her symptoms improved postoperatively, she died 11 months after surgery due to disease progression.
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Affiliation(s)
- Akihiro Tani
- Department of Obstetrics and Gynecology, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Yosuke Tarumi
- Department of Obstetrics and Gynecology, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan,Corresponding author.
| | - Akiyo Kakibuchi
- Department of Obstetrics and Gynecology, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Kohei Aoyama
- Department of Obstetrics and Gynecology, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Tetsuya Kokabu
- Department of Obstetrics and Gynecology, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Hisashi Kataoka
- Department of Obstetrics and Gynecology, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Kaori Yoriki
- Department of Obstetrics and Gynecology, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Michiko Nagamine
- Department of Surgical Pathology, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Taisuke Mori
- Department of Obstetrics and Gynecology, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
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7
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Sunaga A, Hikoso S, Tamaki S, Seo M, Yano M, Hayashi T, Nakagawa A, Nakagawa Y, Kurakami H, Yamada T, Kitamura T, Sato T, Oeun B, Kida H, Sotomi Y, Dohi T, Okada K, Mizuno H, Nakatani D, Yamada T, Yasumura Y, Sakata Y, Seo M, Watanabe T, Yamada T, Hayashi T, Higuchi Y, Masuda M, Asai M, Mano T, Fuji H, Masuda D, Tamaki S, Shutta R, Yamashita S, Sairyo M, Nakagawa Y, Abe H, Ueda Y, Matsumura Y, Nagai K, Yano M, Nishino M, Tanouchi J, Arita Y, Ogasawara N, Ishizu T, Ichikawa M, Takano Y, Rin E, Shinoda Y, Tachibana K, Hoshida S, Izumi M, Yamamoto H, Kato H, Nakatani K, Yasuga Y, Nishio M, Hirooka K, Yoshimura T, Yasuoka Y, Tani A, Okumoto Y, Makino Y, Onishi T, Iwakura K, Kijima Y, Kitao T, Kanai H, Fujita M, Harada K, Kumada M, Nakagawa O, Araki R, Yamada T, Nakagawa A, Yasumura Y, Sato T, Sunaga A, Oeun B, Kida H, Sotomi Y, Dohi T, Nakamoto K, Okada K, Sera F, Kioka H, Ohtani T, Takeda T, Nakatani D, Mizuno H, Hikoso S, Sakata Y. Association between prognosis and the use of angiotensin‐converting enzyme inhibitors and/or angiotensin II receptor blockers in frail patients with heart failure with preserved ejection fraction. ESC Heart Fail 2022. [PMCID: PMC9065837 DOI: 10.1002/ehf2.13873] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Aims The effectiveness of angiotensin‐converting enzyme inhibitors (ACE‐I) and angiotensin II receptor blockers (ARB) has not been demonstrated in patients with heart failure with preserved ejection fraction (HFpEF). We recently reported significant interaction between the use of ACE‐I and/or ARB (ACE‐I/ARB) and frailty on prognosis in patients with HFpEF. In the present study, we examined the association between ACE‐I/ARB and prognosis in patients with HFpEF stratified by the presence or absence of frailty. Methods and results We examined the association between the use of ACE‐I/ARB and prognosis according to the presence [Clinical Frailty Scale (CFS) ≥ 5] or absence (CFS ≤ 4) of frailty in patients with HFpEF in a post hoc analysis of registry data. Primary endpoint was the composite of all‐cause mortality and heart failure admission. Secondary endpoints were all‐cause mortality and heart failure admission. Of 1059 patients, median age was 83 years and 45% were male. Kaplan–Meier analysis showed that the risk of composite endpoint (log‐rank P = 0.001) and all‐cause death (log‐rank P = 0.005) in patients with ACE‐I/ARB was lower in those with CFS ≥ 5, but similar between patients with and without ACE‐I/ARB in patients with CFS ≤ 4 (composite endpoint: log‐rank P = 0.830; all‐cause death: log‐rank P = 0.192). In a multivariable Cox proportional hazards model, use of ACE‐I/ARB was significantly associated with lower risk of the composite endpoint [hazard ratio (HR) = 0.52, 95% confidence interval (CI) = 0.33–0.83, P = 0.005] and heart failure admission (HR = 0.45, 95% CI = 0.25–0.83, P = 0.010) in patients with CFS ≥ 5, but not in patients with CFS ≤ 4 (composite endpoint: HR = 1.41, 95% CI = 0.99–2.02, P = 0.059; heart failure admission: HR = 1.43, 95% CI = 0.94–2.18, P = 0.091). The association between ACE‐I or ARB and prognosis did not significantly differ by CFS (CFS ≤ 4: log‐rank P = 0.562; CFS ≥ 5: log‐rank P = 0.100, for with ACE‐I vs. ARB, respectively). Adjusted HRs for CFS 1–4 were higher than 1.0 but were <1.0 at CFS 5. Conclusions In patients with HFpEF, use of ACE‐I/ARB was associated with better prognosis in patients with frailty as assessed with the CFS, but not in those without frailty.
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Affiliation(s)
- Akihiro Sunaga
- Department of Cardiovascular Medicine Osaka University Graduate School of Medicine Suita Japan
| | - Shungo Hikoso
- Department of Cardiovascular Medicine Osaka University Graduate School of Medicine Suita Japan
| | - Shunsuke Tamaki
- Department of Cardiology Rinku General Medical Center Osaka Japan
| | - Masahiro Seo
- Division of Cardiology Osaka General Medical Center Osaka Japan
| | | | | | - Akito Nakagawa
- Division of Cardiology Amagasaki Chuo Hospital Amagasaki Japan
- Department of Medical Informatics Osaka University Graduate School of Medicine Suita Japan
| | - Yusuke Nakagawa
- Division of Cardiology Kawanishi City Hospital Kawanishi Japan
| | - Hiroyuki Kurakami
- Department of Medical Innovation Osaka University Hospital Suita Japan
| | - Tomomi Yamada
- Department of Medical Innovation Osaka University Hospital Suita Japan
| | - Tetsuhisa Kitamura
- Department of Social and Environmental Medicine Osaka University Graduate School of Medicine Suita Japan
| | - Taiki Sato
- Department of Cardiovascular Medicine Osaka University Graduate School of Medicine Suita Japan
| | - Bolrathanak Oeun
- Department of Cardiovascular Medicine Osaka University Graduate School of Medicine Suita Japan
| | - Hirota Kida
- Department of Cardiovascular Medicine Osaka University Graduate School of Medicine Suita Japan
| | - Yohei Sotomi
- Department of Cardiovascular Medicine Osaka University Graduate School of Medicine Suita Japan
| | - Tomoharu Dohi
- Department of Cardiovascular Medicine Osaka University Graduate School of Medicine Suita Japan
| | - Katsuki Okada
- Department of Cardiovascular Medicine Osaka University Graduate School of Medicine Suita Japan
- Department of Transformative System for Medical Information Osaka University Graduate School of Medicine Suita Japan
| | - Hiroya Mizuno
- Department of Cardiovascular Medicine Osaka University Graduate School of Medicine Suita Japan
| | - Daisaku Nakatani
- Department of Cardiovascular Medicine Osaka University Graduate School of Medicine Suita Japan
| | - Takahisa Yamada
- Division of Cardiology Osaka General Medical Center Osaka Japan
| | - Yoshio Yasumura
- Division of Cardiology Amagasaki Chuo Hospital Amagasaki Japan
| | - Yasushi Sakata
- Department of Cardiovascular Medicine Osaka University Graduate School of Medicine Suita Japan
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8
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Hoshida S, Tachibana K, Shinoda Y, Minamisaka T, Seo M, Yano M, Hayashi T, Nakagawa A, Nakagawa Y, Tamaki S, Yamada T, Yasumura Y, Sotomi Y, Hikoso S, Nakatani D, Sakata Y, Seo M, Watanabe T, Yamada T, Hayashi T, Higuchi Y, Masuda M, Asai M, Mano T, Fuji H, Masuda D, Tamaki S, Shutta R, Yamashita S, Sairyo M, Nakagawa Y, Abe H, Ueda Y, Matsumura Y, Nagai K, Yano M, Nishino M, Tanouchi J, Arita Y, Ogasawara N, Ishizu T, Ichikawa M, Takano Y, Rin E, Shinoda Y, Tachibana K, Hoshida S, Izumi M, Yamamoto H, Kato H, Nakatani K, Yasuga Y, Nishio M, Hirooka K, Yoshimura T, Yasuoka Y, Tani A, Okumoto Y, Makino Y, Onishi T, Iwakura K, Kijima Y, Kitao T, Kanai H, Fujita M, Harada K, Kumada M, Nakagawa O, Araki R, Yamada T, Nakagawa A, Yasumura Y, Sato T, Sunaga A, Oeun B, Kida H, Sotomi Y, Dohi T, Nakamoto K, Okada K, Sera F, Kioka H, Ohtani T, Takeda T, Nakatani D, Mizuno H, Hikoso S, Sakata Y. Relation of left atrial overload indices with prognostic endpoints in heart failure and preserved ejection fraction. ESC Heart Fail 2022. [PMCID: PMC9065817 DOI: 10.1002/ehf2.13865] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Aims Considerable variation in the relationships between the indices of left atrial (LA) volume and pressure could possibly affect the selection of medications or efforts to improve the prognoses of patients with heart failure and preserved ejection fraction (HFpEF). We aimed to clarify the association between the prognostic endpoint and LA overload indices in elderly patients with HFpEF. Methods and results We analysed 898 patients with HFpEF hospitalized for acute decompensated heart failure (men/women: 406/492). Blood tests and transthoracic echocardiography were performed before discharge. The primary endpoint was re‐admission for heart failure or all‐cause mortality. Stroke volume (SV)/left atrial volume (LAV), an index for LA volume overload, was a significant prognostic factor of re‐admission for heart failure in the multivariable Cox hazard analysis adjusted for comorbidities [hazard ratio (HR) 0.616, 95% confidence interval (CI) 0.430–0.882, P = 0.008]. Additionally, the ratio of diastolic elastance (Ed) to arterial elastance (Ea), an index for LA pressure overload, was also significant (HR 1.444, 95% CI 1.014–2.058, P = 0.041). Furthermore, Ed/Ea, but not SV/LAV, was a significant prognostic factor of all‐cause mortality (HR 1.594, 95% CI 1.102–2.306, P = 0.013). Conclusions The index of LA overload for prognosis may differ according to the different endpoints in elderly patients with HFpEF.
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9
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Yagi S, Takahashi T, Murakami K, Azuma M, Sugano M, Miyamoto R, Niki M, Yamada H, Kawabata Y, Tani A, Fukuda D, Kadota M, Ise T, Kusunose K, Tobiume T, Matsuura T, Yamaguchi K, Soeki T, Wakatsuki T, Hata H, Sata M. Infective Endocarditis from Furuncle with Meningitis Complication Caused by Methicillin-resistant Staphylococcus aureus. Intern Med 2021; 60:3251-3255. [PMID: 33867390 PMCID: PMC8580777 DOI: 10.2169/internalmedicine.6902-20] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Infective endocarditis (IE) may be acquired in the community as community-acquired (CA) IE or in the healthcare setting. In Japan, cases of CA-methicillin-resistant Staphylococcus aureus (MRSA) infection as skin infection have been increasing. CA-MRSA strains, including the USA300 clone, have higher pathogenicity and are more destructive to tissue than healthcare-associated MRSA strains because of the toxins they produce, including arginine-catabolic mobile element (ACME) and Panton-Valentine leukocidin (PVL). However, only a few IE cases induced by USA300 have been reported. We herein report a 64-year-old man who developed CA-IE from a furuncle caused by USA300 MRSA producing PVL and ACME, which resulted in complications of meningitis.
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Affiliation(s)
- Shusuke Yagi
- Department of Cardiovascular Medicine, Tokushima University Graduate School of Biomedical Sciences, Japan
- Department of Community Medicine and Human Resource Development, Tokushima University Graduate School of Biomedical Sciences, Japan
- Shikoku Central Hospital, Japan
| | - Tomoko Takahashi
- Department of Cardiovascular Medicine, Tokushima University Graduate School of Biomedical Sciences, Japan
| | - Keiji Murakami
- Infection Control Team, Tokushima University Hospital, Japan
| | - Momoyo Azuma
- Infection Control Team, Tokushima University Hospital, Japan
| | - Mikio Sugano
- Department of Cardiovascular Surgery, Tokushima University Graduate School of Biomedical Sciences, Japan
| | - Ryosuke Miyamoto
- Department of Neurology, Tokushima University Graduate School of Biomedical Sciences, Japan
| | - Mariko Niki
- Department of Dermatology, Tokushima University Graduate School of Biomedical Sciences, Japan
| | - Hirotsugu Yamada
- Department of Cardiovascular Medicine, Tokushima University Graduate School of Biomedical Sciences, Japan
| | - Yutaka Kawabata
- Department of Cardiovascular Medicine, Tokushima University Graduate School of Biomedical Sciences, Japan
| | - Akihiro Tani
- Department of Cardiovascular Medicine, Tokushima University Graduate School of Biomedical Sciences, Japan
| | - Daiju Fukuda
- Department of Cardiovascular Medicine, Tokushima University Graduate School of Biomedical Sciences, Japan
| | - Muneyuki Kadota
- Department of Cardiovascular Medicine, Tokushima University Graduate School of Biomedical Sciences, Japan
| | - Takayuki Ise
- Department of Cardiovascular Medicine, Tokushima University Graduate School of Biomedical Sciences, Japan
| | - Kenya Kusunose
- Department of Cardiovascular Medicine, Tokushima University Graduate School of Biomedical Sciences, Japan
| | - Takeshi Tobiume
- Department of Cardiovascular Medicine, Tokushima University Graduate School of Biomedical Sciences, Japan
| | - Tomomi Matsuura
- Department of Cardiovascular Medicine, Tokushima University Graduate School of Biomedical Sciences, Japan
| | - Koji Yamaguchi
- Department of Cardiovascular Medicine, Tokushima University Graduate School of Biomedical Sciences, Japan
| | - Takeshi Soeki
- Department of Cardiovascular Medicine, Tokushima University Graduate School of Biomedical Sciences, Japan
| | - Tetsuzo Wakatsuki
- Department of Cardiovascular Medicine, Tokushima University Graduate School of Biomedical Sciences, Japan
| | - Hiroki Hata
- Department of Cardiovascular Surgery, Tokushima University Graduate School of Biomedical Sciences, Japan
| | - Masataka Sata
- Department of Cardiovascular Medicine, Tokushima University Graduate School of Biomedical Sciences, Japan
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10
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Tani A, Kusunose K, Matsumoto K, Yamada H, Sata M. Diastolic Mitral Regurgitation on Color M-Mode Echocardiography in a Patient With Complete Atrioventricular Block. Circ Rep 2020; 2:207-208. [PMID: 33693230 PMCID: PMC7921352 DOI: 10.1253/circrep.cr-20-0002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Akihiro Tani
- Department of Cardiovascular Medicine, Tokushima University Hospital
| | - Kenya Kusunose
- Department of Cardiovascular Medicine, Tokushima University Hospital
| | | | - Hirotsugu Yamada
- Department of Cardiovascular Medicine, Tokushima University Hospital
| | - Masataka Sata
- Department of Cardiovascular Medicine, Tokushima University Hospital
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11
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Kondo A, Akada S, Akiyama K, Arakawa M, Ichi S, Inamoto Y, Ishida T, Ishikawa H, Itoh T, Izumi A, Kimura F, Kondo AS, Matsuoka R, Miyauchi A, Mochizuki J, Momohara Y, Morikawa S, Morioka M, Morota N, Nakabe K, Obayashi S, Oku M, Samura O, Sasahara J, Sase M, Shimamoto K, Shimamura K, Sumigama S, Tada K, Takahashi H, Tani A, Wada S, Wada-HIraike O, Watanabe T, Yamaguchi M, Yasui T, Yokomine M. Real prevalence of neural tube defects in Japan: How many of such pregnancies have been terminated? Congenit Anom (Kyoto) 2019; 59:118-124. [PMID: 30883906 DOI: 10.1111/cga.12333] [Citation(s) in RCA: 5] [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: 01/28/2019] [Revised: 03/08/2019] [Accepted: 03/14/2019] [Indexed: 12/30/2022]
Abstract
The vital role of folic acid is to reduce the risk of having a neonate afflicted with neural tube defects. The prevalence of neural tube defects (myelomeningocele and anencephaly) has been reported in an incomplete form over the last 40 years in Japan. We aimed to evaluate the total number of neural tube defects including those delivered or terminated, to clarify the proportion of those terminated, and to internationally compare their prevalence. Through information on >311 000 deliveries obtained from 262 hospitals/clinics for 2 years of 2014 and 2015, we identified that the rate of total neural tube defects (termination of pregnancy, live births and stillbirths) was 8.29 per 10 000 deliveries for the year 2014 and was 8.72 for 2015, which were 1.5 and 1.6 times higher than the respective values (live births and stillbirths) reported. It is also observed that the ratio of the total number of myelomeningocele (termination of pregnancy, live births, and stillbirths) to that of anencephaly was approximately 1:1.2, that a half of pregnancies afflicted with neural tube defects were terminated, and that the proportion of termination of pregnancy due to myelomeningocele and due to anencephaly was 20% and 80%, respectively. Internationally, the real prevalence of neural tube defects in Japan was comparatively high, ranking fifth among the seven developed countries. In conclusion, the real prevalence of total neural tube defects was approximately 1.5 times higher than that currently reported by the Japan Association of Obstetricians and Gynecologists.
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Affiliation(s)
- Atsuo Kondo
- Department of Urology, Atsuta Rehabilitation Hospital, Nagoya, Japan
| | - Shinobu Akada
- Department of Obstetrics and Gynecology, Osaka Habikino Medical Center, Habikino
| | - Kunihisa Akiyama
- Department of Obstetrics and Gynecology, Tokyo Metropolitan Hiroo Hospital, Tokyo, Japan
| | | | - Shunsuke Ichi
- Department of Neurosurgery, Japanese Red Cross Hospital, Tokyo, Japan
| | - Yutaka Inamoto
- Department of Obstetrics and Gynecology, JA Shizuoka Kohseiren Enshu Hospital, Hamamatsu, Japan
| | - Tomohiko Ishida
- Department of Obstetrics and Gynecology, Itabashi Chuo Medical Center, Tokyo, Japan
| | - Hiroshi Ishikawa
- Department of Obstetrics and Gynecology, Kanagawa Children's Medical Center, Yokohama, Japan
| | - Tomonori Itoh
- Department of Internal Medicine, Atsuta Rehabilitation Hospital, Nagoya, Japan
| | | | - Fuminori Kimura
- Department of Obstetrics and Gynecology, Shiga University of Medical Science Hospital, Ohtsu, Japan
| | - Atsuya S Kondo
- Department of Urology, Kariya Toyota General Hospital, Kariya, Japan
| | - Ryu Matsuoka
- Department of Obstetrics and Gynecology, Showa University School of Medicine, Tokyo, Japan
| | - Akito Miyauchi
- Department of Obstetrics and Gynecology, Japanese Red Cross Medical Center, Tokyo, Japan
| | - Junko Mochizuki
- Department of Obstetrics and Gynecology, Kitasato University Hospital, Sagamihara, Japan
| | - Yoshihito Momohara
- Department of Obstetrics and Gynecology, Tokyo Metropolitan Ohtsuka Hospital, Tokyo, Japan
| | - Shigehiko Morikawa
- Department of Obstetrics and Gynecology, Komaki Municipal Hospital, Komaki, Japan
| | - Miki Morioka
- Department of Obstetrics and Gynecology, Showa University Fujigaoka Hospital, Yokohama, Japan
| | - Nobuhito Morota
- Department of Neurosurgery, Kitasato University Hospital, Sagamihara, Japan
| | | | - Satoshi Obayashi
- Department of Obstetrics and Gynecology, Tokyo Medical and Dental University, Medical Hospital, Tokyo, Japan
| | - Masataka Oku
- Department of Obstetrics and Gynecology, Higashiosaka City Medical Center, Higashiosaka, Japan
| | - Osamu Samura
- Department of Obstetrics and Gynecology, The Jikei University Hospital, Tokyo, Japan
| | - Jun Sasahara
- Department of Obstetrics and Gynecology, Osaka Medical Center and Research Institute for Maternal and Child Health, Izumi, Japan
| | - Masakatsu Sase
- Department of Obstetrics and Gynecology, Yamaguchi Prefectural Grand Medical Center, Houhu, Japan
| | - Kumi Shimamoto
- Department of Obstetrics and Gynecology, Matsuyama Red Cross Hospital, Matsuyama, Japan
| | - Katsunori Shimamura
- Department of Obstetrics and Gynecology, Yamaguchi-ken Saiseikai Shimonoseki General Hospital, Shimonoseki, Japan
| | - Seiji Sumigama
- Department of Obstetrics and Gynecology, Nagoya University Hospital, Nagoya, Japan
| | - Katsuhiko Tada
- Department of Obstetrics and Gynecology, Okayama Medical Center, Okayama, Japan
| | - Hiroyuki Takahashi
- Department of Obstetrics and Gynecology, Tottori Prefectural Central Hospital, Tottori, Japan
| | | | - Seiji Wada
- Division of Fetal Medicine, National Center for Child Health and Development, Tokyo, Japan
| | - Osamu Wada-HIraike
- Department of Obstetrics and Gynecology, The University of Tokyo, Tokyo, Japan
| | - Tomoyuki Watanabe
- Department of Nutritional Science, Aichi Gakuin University, Nisshin, Japan
| | - Masatoshi Yamaguchi
- Department of Obstetrics and Gynecology, University of Miyazaki Hospital, Miyazaki, Japan
| | - Tomoyo Yasui
- Department of Obstetrics and Gynecology, Osaka City University Hospital, Osaka, Japan
| | - Masato Yokomine
- Department of Obstetrics and Gynecology, Kurume University Hospital, Kurume, Japan
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Tani A, Imoto H, Kananoka Y. Conservative Surgical Management for Uterine Adenomyosis without Using the Double Flap Method: A Case Report. J Minim Invasive Gynecol 2018. [DOI: 10.1016/j.jmig.2018.09.493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Demmel F, Tani A. Stokes-Einstein relation of the liquid metal rubidium and its relationship to changes in the microscopic dynamics with increasing temperature. Phys Rev E 2018; 97:062124. [PMID: 30011507 DOI: 10.1103/physreve.97.062124] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Indexed: 06/08/2023]
Abstract
For liquid rubidium the Stokes-Einstein (SE) relation is well fulfilled near the melting point with an effective hydrodynamic diameter, which agrees well with a value from structural investigations. A wealth of thermodynamic and microscopic data exists for a wide range of temperatures for liquid rubidium and hence it represents a good test bed to challenge the SE relation with rising temperature from an experimental point of view. We performed classical molecular dynamics simulations to complement the existing experimental data using a pseudopotential, which describes perfectly the structure and dynamics of liquid rubidium. The derived SE relation from combining experimental shear viscosity data with simulated diffusion coefficients reveals a weak violation at about 1.3T_{melting}≈400 K. The microscopic relaxation dynamics on nearest neighbor distances from neutron spectroscopy demonstrate distinct changes in the amplitude with rising temperature. The derived average relaxation time for density fluctuations on this length scale shows a non-Arrhenius behavior, with a slope change around 1.5T_{melting}≈450 K. Combining the simulated macroscopic self-diffusion coefficient with that microscopic average relaxation time, a distinct violation of the SE relation in the same temperature range can be demonstrated. One can conclude that the changes in the collective dynamics, a mirror of the correlated movements of the particles, are at the origin for the violation of the SE relation. The changes in the dynamics can be understood as a transition from a more viscous liquid metal to a more fluid-like liquid above the crossover temperature range of 1.3-1.5 T_{melting}. The decay of the amplitude of density fluctuations in liquid aluminium, lead, and rubidium demonstrates a remarkable agreement and points to a universal thermal crossover in the dynamics of liquid metals.
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Affiliation(s)
- F Demmel
- ISIS Facility, Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom
| | - A Tani
- Dipartimento di Chimica, Universita di Pisa, Via G. Moruzzi 13, I-56124 Pisa, Italy
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Cavallaro L, Indelli A, Tani A. Sur le mécanisme des chromates dans la corrosion en milieu liquide des aciers communs et inoxydables. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/metal/194946120818] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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15
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Tani A, Yamamoto S, Maegawa M, Kunimi K, Matsui S, Keyama K, Kato T, Uemura H, Kuwahara A, Matsuzaki T, Yasui T, Kamada M, Soeki T, Sata M, Irahara M. Arterial stiffness is increased in young women with endometriosis. J OBSTET GYNAECOL 2014; 35:711-5. [PMID: 25543526 DOI: 10.3109/01443615.2014.992871] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [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: 11/13/2022]
Abstract
Endometriosis is a chronic gynaecological disorder that is accompanied by inflammation and oxidative stress. Atherosclerosis has a long subclinical progression in arteries of children and young adults decades before overt clinical manifestations of the disease. In this study, we determined arterial stiffness by measuring brachial-ankle pulse wave velocity (baPWV) in women with endometriosis to assess the presence of subclinical atherosclerosis. We also measured markers of inflammation and oxidative stress in women with endometriosis. baPWV in women with endometriosis aged over 30 years was significantly higher than that in women without endometriosis aged over 30 years (p < 0.05), but not in women aged less than 30. Serum high-sensitivity C-reactive protein level in women with endometriosis was significantly higher than that in controls (p < 0.05). Young women with endometriosis show significantly increased arterial stiffness, suggesting that women with endometriosis need to be cautious of the future onset of atherosclerosis.
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Affiliation(s)
- A Tani
- a Department of Obstetrics and Gynecology , Institute of Health Biosciences, The University of Tokushima Graduate School , Tokushima , Japan
| | - S Yamamoto
- a Department of Obstetrics and Gynecology , Institute of Health Biosciences, The University of Tokushima Graduate School , Tokushima , Japan
| | - M Maegawa
- b Department of Obstetrics and Gynecology , Tokushima Prefectural Central Hospital , Tokushima , Japan
| | - K Kunimi
- a Department of Obstetrics and Gynecology , Institute of Health Biosciences, The University of Tokushima Graduate School , Tokushima , Japan
| | - S Matsui
- a Department of Obstetrics and Gynecology , Institute of Health Biosciences, The University of Tokushima Graduate School , Tokushima , Japan
| | - K Keyama
- a Department of Obstetrics and Gynecology , Institute of Health Biosciences, The University of Tokushima Graduate School , Tokushima , Japan
| | - T Kato
- a Department of Obstetrics and Gynecology , Institute of Health Biosciences, The University of Tokushima Graduate School , Tokushima , Japan
| | - H Uemura
- c Department of Preventive Medicine , Institute of Health Biosciences, The University of Tokushima Graduate School , Tokushima , Japan
| | - A Kuwahara
- a Department of Obstetrics and Gynecology , Institute of Health Biosciences, The University of Tokushima Graduate School , Tokushima , Japan
| | - T Matsuzaki
- a Department of Obstetrics and Gynecology , Institute of Health Biosciences, The University of Tokushima Graduate School , Tokushima , Japan
| | - T Yasui
- d Department of Reproductive Technology , Institute of Health Biosciences, The University of Tokushima Graduate School , Tokushima , Japan
| | - M Kamada
- e Department of Obstetrics and Gynecology , Shikoku Central Hospital of the Mutual Aid Association of Public School Teachers , Ehime , Japan
| | - T Soeki
- f Department of Cardiovascular Medicine , Institute of Health Bioscience, The University of Tokushima Graduate School , Tokushima , Japan
| | - M Sata
- f Department of Cardiovascular Medicine , Institute of Health Bioscience, The University of Tokushima Graduate School , Tokushima , Japan
| | - M Irahara
- a Department of Obstetrics and Gynecology , Institute of Health Biosciences, The University of Tokushima Graduate School , Tokushima , Japan
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Tani A, Yasui T, Kasai K, Keyama K, Matsui S, Kato T, Irahara M. Different circulating levels of monocyte chemoattractant protein-1 and interleukin-8 during the menopausal transition. J Reprod Immunol 2014. [DOI: 10.1016/j.jri.2014.09.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Tani A, Kato T, Keyama K, Matsui S, Irahara M. Accidental Findings of Minimal Endometriosis during Laparoscopic Surgery: A Retrospective Study. J Minim Invasive Gynecol 2014. [DOI: 10.1016/j.jmig.2014.08.456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Kato T, Yoshida K, Tani A, Kuwahara A, Irahara M. In Order to Prevent Urethral Injury in Total Laparoscopic Hysterectomy (TLH), How to Check the Ureter Is Selectively Used Depending on the Risk of Each Patient. J Minim Invasive Gynecol 2014. [DOI: 10.1016/j.jmig.2014.08.545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Matsui S, Yasui T, Tani A, Kato T, Uemura H, Kuwahara A, Matsuzaki T, Arisawa K, Irahara M. Effect of ultra-low-dose estradiol and dydrogesterone on arterial stiffness in postmenopausal women. Climacteric 2013; 17:191-6. [DOI: 10.3109/13697137.2013.856399] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Matsui S, Yasui T, Tani A, Kato T, Kunimi K, Uemura H, Kuwahara A, Matsuzaki T, Irahara M. Difference in the ratio of high-molecular weight (HMW) to total adiponectin and HMW adiponectin in late post-menopausal women. J Endocrinol Invest 2013; 36:982-5. [PMID: 23765418 DOI: 10.3275/9001] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
Abstract
OBJECTIVE High-molecular weight (HMW) isoform level and HMW ratio have been shown to be better predictors of insulin sensitivity and metabolic syndrome than total adiponectin level.We examined the changes in circulating levels of HMW adiponectin and ratios of HMW to total adiponectin in women during the menopausal transition. METHODS We conducted a cross-sectional study in 217 healthy women and divided them into 4 stages: 58 women in pre-menopausal, 69 women in perimenopausal, 62 women in early post-menopausal and 28 women in late post-menopausal phase. Serum levels of total adiponectin and HMW adiponectin were measured by an enzyme-linked immunosorbent assay. RESULTS In late post-menopausal women, HMW adiponectin level was significantly higher than that in peri-menopausal women and the HMW to total adiponectin ratio was significantly lower than that in early post-menopausal women. In peri-menopausal women, HMW adiponectin level was significantly lower than that in pre-menopausal women and HMW to total adiponectin ratio was significantly lower than the ratios in pre-menopausal and early post-menopausal women. CONCLUSION The ratio of HMW to total adiponectin is low in late post-menopausal women, though both levels of total and HMW adiponectin were high after menopause in our cross-sectional study.
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Affiliation(s)
- S Matsui
- Department of Obstetrics and Gynecology, Institute of Health Biosciences, The University of Tokushima Graduate School, 3-18-15 Kuramoto, Tokushima 770-8503, Japan.
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Ryu I, Tani A, Fukuyama T, Ravelli D, Montanaro S, Fagnoni M. Efficient C–H/C–N and C–H/C–CO–N Conversion via Decatungstate-Photoinduced Alkylation of Diisopropyl Azodicarboxylate. Org Lett 2013; 15:2554-7. [DOI: 10.1021/ol401061v] [Citation(s) in RCA: 113] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Ilhyong Ryu
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan, and PhotoGreen Lab, Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Akihiro Tani
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan, and PhotoGreen Lab, Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Takahide Fukuyama
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan, and PhotoGreen Lab, Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Davide Ravelli
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan, and PhotoGreen Lab, Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Sara Montanaro
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan, and PhotoGreen Lab, Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Maurizio Fagnoni
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan, and PhotoGreen Lab, Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
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Bertolini D, Tani A. Generalized thermodynamic and transport properties. I. Simple liquids. Phys Rev E Stat Nonlin Soft Matter Phys 2011; 83:031201. [PMID: 21517485 DOI: 10.1103/physreve.83.031201] [Citation(s) in RCA: 2] [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] [Received: 11/11/2010] [Indexed: 05/30/2023]
Abstract
We propose a method by which the generalized transport properties and coefficients at all wavelengths and frequencies can be obtained by inversion of an exact kinetic equation. The necessary data are the density-density, energy-energy, and density-energy time correlation functions, which can be obtained by molecular-dynamics simulation. In addition, also the coupling between viscous stress tensor and energy flux vector can be obtained without approximation. This allows one to check the validity of the Markov assumption in a straightforward way. As a first test case, the theory is applied to liquid argon in two thermodynamic states. For this system, we calculate and discuss generalized thermodynamic (enthalpy, specific heats, and thermal expansion) and transport properties (longitudinal viscosity, thermal conductivity).
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Affiliation(s)
- D Bertolini
- Istituto per i Processi Chimico-Fisici del Consiglio Nazionale delle Ricerche, Via Moruzzi 1, I-56124 Pisa, Italy.
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Bertolini D, Tani A. Generalized thermodynamic and transport properties. II. Molecular liquids. Phys Rev E Stat Nonlin Soft Matter Phys 2011; 83:031202. [PMID: 21517486 DOI: 10.1103/physreve.83.031202] [Citation(s) in RCA: 3] [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] [Received: 11/11/2010] [Indexed: 05/30/2023]
Abstract
In the present paper, we extend the method described in paper I [D. Bertolini and A. Tani, preceding paper, Phys. Rev. E 83, 031201 (2011)] to molecular liquids, which allows us to solve the exact kinetic equation proposed by de Schepper et al. [Phys. Rev. A 38, 271 (1988)] without approximations. In particular, generalized thermodynamic properties (enthalpy, specific heat, and thermal expansion coefficient) and transport properties (longitudinal viscosity, thermal conductivity) have been calculated for three liquids of increasing complexity, namely dimethyl sulfoxide, hydrogen fluoride, and SPC/E water. All results have been obtained by the molecular formalism as well as the atomic one, corrected for intramolecular correlations that are due to the models adopted. As done for simple liquids, the coupling between the viscous stress tensor and the energy flux vector has been calculated exactly. We also show that the Markov assumption for the dynamics related to thermal conductivity can only be adopted with caution.
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Affiliation(s)
- D Bertolini
- Istituto per i Processi Chimico-Fisici del Consiglio Nazionale delle Ricerche, Via Moruzzi 1, I-56124 Pisa, Italy.
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Ryu I, Tani A, Fukuyama T, Ravelli D, Fagnoni M, Albini A. Atom-Economical Synthesis of Unsymmetrical Ketones through Photocatalyzed CH Activation of Alkanes and Coupling with CO and Electrophilic Alkenes. Angew Chem Int Ed Engl 2011; 50:1869-72. [DOI: 10.1002/anie.201004854] [Citation(s) in RCA: 134] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2010] [Revised: 10/30/2010] [Indexed: 11/06/2022]
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Ryu I, Tani A, Fukuyama T, Ravelli D, Fagnoni M, Albini A. Atom-Economical Synthesis of Unsymmetrical Ketones through Photocatalyzed CH Activation of Alkanes and Coupling with CO and Electrophilic Alkenes. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201004854] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Khludnev A, Kovtunenko V, Tani A. On the topological derivative due to kink of a crack with non-penetration. Anti-plane model. J Math Pures Appl 2010; 94:571-596. [PMID: 22163369 PMCID: PMC3212851 DOI: 10.1016/j.matpur.2010.06.002] [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] [Subscribe] [Scholar Register] [Received: 06/30/2009] [Indexed: 05/31/2023]
Abstract
A topological derivative is defined, which is caused by kinking of a crack, thus, representing the topological change. Using variational methods, the anti-plane model of a solid subject to a non-penetration condition imposed at the kinked crack is considered. The objective function of the potential energy is expanded with respect to the diminishing branch of the incipient crack. The respective sensitivity analysis is provided by a Saint-Venant principle and a local decomposition of the solution of the variational problem in the Fourier series.
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Affiliation(s)
- A.M. Khludnev
- Lavrent'ev Institute of Hydrodynamics, 630090 Novosibirsk, Russia
| | - V.A. Kovtunenko
- Lavrent'ev Institute of Hydrodynamics, 630090 Novosibirsk, Russia
- Institute for Mathematics and Scientific Computing, Karl-Franzens-University of Graz, 8010 Graz, Austria
| | - A. Tani
- Department of Mathematics, Keio University, Yokohama 223-8522, Japan
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Vitali L, Selmi V, Tani A, Margheri M, Miranda M, Innocenti C, Gaudio RD, Adembri C. Sepsis induces an early impairment of endothelial glycocalyx in glomerular capillaries. Crit Care 2009. [PMCID: PMC4084135 DOI: 10.1186/cc7413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Nazef L, Belguesmia Y, Tani A, Prévost H, Drider D. Identification of Lactic Acid Bacteria from Poultry Feces: Evidence on Anti-Campylobacter and Anti-Listeria Activities. Poult Sci 2008; 87:329-34. [DOI: 10.3382/ps.2007-00282] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Giannelli M, Chellini F, Margheri M, Tonelli P, Tani A. Effect of chlorhexidine digluconate on different cell types: a molecular and ultrastructural investigation. Toxicol In Vitro 2007; 22:308-17. [PMID: 17981006 DOI: 10.1016/j.tiv.2007.09.012] [Citation(s) in RCA: 159] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2007] [Revised: 09/14/2007] [Accepted: 09/14/2007] [Indexed: 10/22/2022]
Abstract
Although several studies have shown that chlorhexidine digluconate (CHX) has bactericidal activity against periodontal pathogens and exerts toxic effects on periodontal tissues, few have been directed to evaluate the mechanisms underlying its adverse effects on these tissues. Therefore, the aim of the present study was to investigate the in vitro cytotoxicity of CHX on cells that could represent common targets for its action in the surgical procedures for the treatment of periodontitis and peri-implantitis and to elucidate its mechanisms of action. Osteoblastic, endothelial and fibroblastic cell lines were exposed to various concentrations of CHX for different times and assayed for cell viability and cell death. Also analysis of mitochondrial membrane potential, intracellular Ca2+ mobilization and reactive oxygen species (ROS) generation were done in parallel, to correlate CHX-induced cell damage with alterations in key parameters of cell homeostasis. CHX affected cell viability in a dose and time-dependent manners, particularly in osteoblasts. Its toxic effect consisted in the induction of apoptotic and autophagic/necrotic cell deaths and involved disturbance of mitochondrial function, intracellular Ca2+ increase and oxidative stress. These data suggest that CHX is highly cytotoxic in vitro and invite to a more cautioned use of the antiseptic in the oral surgical procedures.
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Affiliation(s)
- M Giannelli
- Department of Oral Surgery, University of Florence, Viale Morgagni 85, 50134 Florence, Italy.
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Tani A, Henderson D, Barker J, Hecht C. Application of perturbation theory to the calculation of the dielectric constant of a dipolar hard sphere fluid. Mol Phys 2006. [DOI: 10.1080/00268978300100621] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Tani A, Ishikawa K, Takeya K. Thermal stability of methyl radical in -ray irradiated methane hydrate under different pressure from 0.003 to 1MPa. RADIAT MEAS 2006. [DOI: 10.1016/j.radmeas.2006.04.022] [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] [Indexed: 11/17/2022]
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Hiratani K, Haruta T, Tani A, Kawahara J, Usui I, Kobayashi M. Roles of mTOR and JNK in serine phosphorylation, translocation, and degradation of IRS-1. Biochem Biophys Res Commun 2005; 335:836-42. [PMID: 16099428 DOI: 10.1016/j.bbrc.2005.07.152] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2005] [Accepted: 07/26/2005] [Indexed: 11/17/2022]
Abstract
In 3T3-L1 adipocytes, insulin or anisomycin stimulated phosphorylation of IRS-1 at Ser(307) and Ser(636/639), both of which were partially reduced by the mTOR inhibitor, rapamycin, or the JNK inhibitor, SP600125, and were further inhibited by a combination of them. Interestingly, anisomycin-induced p70(S6K) phosphorylation was reduced by SP600125, while insulin-induced p70(S6K) phosphorylation was not. Furthermore, unlike insulin, anisomycin failed to elicit translocation or degradation of IRS-1. These results indicate that mTOR and JNK play roles in phosphorylating IRS-1 serine residues, and that insulin and anisomycin are different in terms of the relationship of activation between mTOR and JNK, and the effects on IRS-1 localization and stability.
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Affiliation(s)
- Kazuyuki Hiratani
- First Department of Medicine, Toyama Medical and Pharmaceutical University, Toyama, Japan
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Saito M, Okutomi T, Kanai Y, Mochizuki J, Tani A, Amano K, Hoka S. Patient-controlled epidural analgesia during labor using ropivacaine and fentanyl provides better maternal satisfaction with less local anesthetic requirement. J Anesth 2005; 19:208-12. [PMID: 16032448 DOI: 10.1007/s00540-005-0316-2] [Citation(s) in RCA: 11] [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] [Received: 02/10/2004] [Accepted: 02/23/2005] [Indexed: 10/25/2022]
Abstract
PURPOSE To test the hypothesis that patient-controlled epidural analgesia (PCEA) using ropivacaine and fentanyl provides better maternal satisfaction and less anesthetic requirement than conventional continuous epidural infusion (CEI) during labor, we studied 58 uncomplicated parturients (singleton, vertex presentation). METHODS After establishing effective epidural analgesia with 11 ml of 0.2% ropivacaine, all parturients were randomly divided into one of two groups: the PCEA group (n = 29) or the CEI group (n = 29). In the PCEA group, the pump was initiated to deliver a basal infusion at 6 ml x h(-1) and a demand dose of 5 ml; the lockout interval was 10 min, and there was a 31 ml x h(-1) limit. The drugs used were 0.1% ropivacaine + fentanyl 2 microg x ml(-1). In the CEI group, epidural analgesia was maintained with the same solution as the PCEA group at a constant rate of 10 ml x h(-1). If parturients requested additional analgesia in the CEI group, we added 8 ml of epidural 0.2% ropivacaine without fentanyl. RESULTS Parturients' demographic data, such as duration of labor, mode of delivery, Apgar score, and umbilical arterial pH did not differ between the two groups. However, the hourly requirement of ropivacaine was significantly less in the PCEA group than in the CEI group (9.3 +/- 2.5 vs. 17.6 +/- 7.6 mg x h(-1); P < 0.05). Parturients' satisfaction assessed by the Visual Analogue Scale tended to be higher in the PCEA group than in the CEI group. Side effects such as nausea, hypotension, and itching were similar for the two groups. CONCLUSION We found that PCEA was an effective means of providing optimal analgesia, with better satisfaction during labor and less local anesthetic requirement.
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Affiliation(s)
- Miwako Saito
- Department of Anesthesiology, Kitasato University School of Medicine, 1-15-1 Kitasato, Sagamihara, 228-8555, Japan
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Nosi D, Vassalli M, Polidori L, Giannini R, Tani A, Chellini F, Paternostro F. Effects of S1P on myoblastic cell contraction: possible involvement of Ca-independent mechanisms. Cells Tissues Organs 2005; 178:129-38. [PMID: 15655330 DOI: 10.1159/000082243] [Citation(s) in RCA: 2] [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] [Accepted: 10/29/2004] [Indexed: 01/19/2023] Open
Abstract
Sphingosine-1-phosphate (S1P) is a lipid mediator, which affects many essential processes such as cell proliferation, differentiation and contraction in many cell types. We have previously demonstrated that the lipid mediator elicits Ca(2+) transients in a myoblastic cell line (C2C12) by interacting with its specific receptors (S1PR(s)). In the present study, we wanted to correlate the Ca(2+) response with activation of myoblastic cell contractility. C2C12 cells were first investigated for the expression and cellular organization of cytoskeletal proteins by immunoconfocal microscopy. We found that myoblasts exhibited a quite immature cytoskeleton, with filamentous actin dispersed as a web-like structure within the cytoplasm. To evaluate intracellular Ca(2+) mobilization, the cells were loaded with a fluorescent Ca(2+) indicator (Fluo-3), stimulated with S1P and simultaneously observed with differential interference contrast and fluorescence optics. Exogenous S1P-induced myoblastic cell contraction was temporally unrelated to S1P-induced intracellular Ca(2+) increase; cell contraction occurred within 5-8 s from stimulation, whereas intracellular Ca(2+) increase was evident only after 15-25 s. To support the Ca(2+) independence of myoblastic cell contraction, the cells were pretreated with a Ca(2+) chelator, BAPTA/AM, prior to stimulation with S1P. In these experimental conditions, the myoblasts were still able to contract, whereas the S1P-induced Ca(2+) transients were completely abolished. On the contrary, when C2C12 cells were induced to differentiate into skeletal myotubes, they responded to S1P with a rapid cell contraction concurrent with an increase in the intracellular Ca(2+). These data suggest that Ca(2+)-independent mechanism of cell contraction may be replaced by Ca(2+)-dependent ones during skeletal muscle differentiation.
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Affiliation(s)
- D Nosi
- Department of Anatomy, Histology and Forensic Medicine, University of Florence, Viale Morgagni, 85, IT-50134 Florence, Italy
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Ohta T, Tani A, Kimbara K, Kawai F. A novel nicotinoprotein aldehyde dehydrogenase involved in polyethylene glycol degradation. Appl Microbiol Biotechnol 2005; 68:639-46. [PMID: 15726348 DOI: 10.1007/s00253-005-1936-z] [Citation(s) in RCA: 33] [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] [Received: 01/05/2005] [Revised: 01/30/2005] [Accepted: 02/03/2005] [Indexed: 12/01/2022]
Abstract
A gene (pegC) encoding aldehyde dehydrogenase (ALDH) was located 3.4 kb upstream of a gene encoding polyethylene glycol (PEG) dehydrogenase (pegA) in Sphingomonas macrogoltabidus strain 103. ALDH was expressed in Escherichia coli and purified on a Ni-nitrilotriacetic acid agarose column. The recombinant enzyme was a homotetramer consisting of four 46.1-kDa subunits. The alignment of the putative amino acid sequence of the cloned enzyme showed high similarity with a group of NAD(P)-dependent ALDHs (identity 36-52%); NAD-binding domains (Rossmann fold and four glycine residues) and catalytic residues (Glu225 and Cys259) were well conserved. The cofactor, which was extracted from the purified enzyme, was tightly bound to the enzyme and identified as NADP. The enzyme contained 0.94 mol NADP per subunit. The enzyme was activated by Ca(2+), but by no other metals; no metal (Zn, Fe, Mg, or Mn) was detected in the purified recombinant enzyme. Activity was inhibited by p-chloromercuric benzoate, and heavy metals such as Hg, Cu, Pb and Cd, indicating that a cysteine residue is involved in the activity. Enzyme activity was independent of N,N-dimethyl-p-nitrosoaniline as an electron acceptor. Trans-4-(N,N-dimethylamino)-cinnamaldehyde was not oxidized as a substrate, but the compound worked as an inhibitor for the enzyme, as did pyrazole. The enzyme acted on n-aldehydes C(2)-C(14)) and PEG-aldehydes. Thus the enzyme was concluded to be a novel Ca(2+)-activating nicotinoprotein (NADP-containing) PEG-aldehyde dehydrogenase involved in the degradation of PEG in S. macrogoltabidus strain 103.
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Affiliation(s)
- T Ohta
- Research Institute for Bioresources, Okayama University, Kurashiki, Japan
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Manneschi LI, Del Rosso A, Milia AF, Tani A, Nosi D, Pignone A, Generini S, Giacomelli R, Cerinic MM. Damage of cutaneous peripheral nervous system evolves differently according to the disease phase and subset of systemic sclerosis. Rheumatology (Oxford) 2005; 44:607-13. [PMID: 15728417 DOI: 10.1093/rheumatology/keh559] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE Evidence shows that peripheral nervous system (PNS) is involved in systemic sclerosis (SSc), but few morphological studies have assessed the ultrastructural pathological modifications. The aim was to study ultrastructural modifications of skin PNS fibres in SSc according to subsets [limited SSc (lSSc) and diffuse SSc (dSSc)] and phases (early and advanced) of the disease. METHODS Skin biopsies were taken from the forearms of 23 SSc patients (11 lSSc and 12 dSSc) and 10 controls. Each biopsy was processed for transmission electron microscopy (TEM). RESULTS At TEM, observation in skin from early lSSc, signs of inflammation were evident, while PNS fibres were not damaged. The microvascular wall showed hypertrophic endothelial cells bulging into the lumen. In advanced lSSc, fibrosis prevailed on inflammation and slight ultrastructural alterations of PNS fibres were evident in the papillary derma. In early dSSc, ultrastructural alterations of PNS fibres, similar to those observed in the advanced phase of lSSc, were found together with signs of inflammation and fibrosis. In advanced dSSc, in the papillary and reticular dermis PNS fibres were reduced and showed relevant ultrastructural alterations. CONCLUSIONS In SSc, PNS ultrastructure damage is linked to the progression and severity of skin involvement. The alterations evolve from the early to the advanced phase mainly in the diffuse subset. In particular, the severe PNS lesions found in advanced lSSc are already present and widely diffuse in early dSSc and the microvascular involvement in early lSSc seems to precede the modification of the PNS in the skin. Thus, an early therapeutic approach can be useful to reduce the progression of PNS and skin damage in SSc patients.
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Affiliation(s)
- L Ibba Manneschi
- Department of Anatomy, Histology and Forensic Medicine, University of Florence, Viale Morgagni, 85, 50134, Florence, Italy.
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Del Rosso A, Ibba Manneschi L, Tani A, Nosi D, Franca Milia A, Generini S, Guiducci S, Melchiorre D, Pignone A, Matucci Cerinic M. [Peripheral nervous system in limited systemic sclerosis]. Reumatismo 2005; 56:247-52. [PMID: 15643479 DOI: 10.4081/reumatismo.2004.247] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES PNS is involved in Systemic Sclerosis (SSc) since the earliest phases. Our aim is to perform an ultrastructural study on skin PNS fibers in SSc. METHODS Skin biopsies were taken from forearms of 8 patients affected by limited SSc (lSSc) and 3 controls and processed for transmission electron microscopy (TEM). The semithin sections (2 mm) were observed at light microscope and optical fields were chosen for ultrathin sections (1 mm) preparation and TEM examination. RESULTS In lSSc skin, in the semithin sections, damaged areas are close to apparently spared areas. At TEM, in early lSSc patients, signs of inflammation and damaged microvessels are visible in derma. PNS fibers are no damaged. In advanced lSSc, fibrosis prevails on inflammation, and slight ultrastructural alterations of PNS fibers are evident in papillar derma. CONCLUSIONS PNS lesions are different in severity in lSSc according to the disease duration, resulting more severe in advanced than in early phase.
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Affiliation(s)
- A Del Rosso
- Dipartimento di Medicina Interna, Divisione di Reumatologia, Università di Firenze, 50139 Firenze, Italy.
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Cacelli I, Cinacchi G, Prampolini G, Tani A. Modeling benzene with single-site potentials fromab initiocalculations: A step toward hybrid models of complex molecules. J Chem Phys 2004; 120:3648-56. [PMID: 15268527 DOI: 10.1063/1.1642594] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Extensive ab initio calculations at the MP2/6-31G* level have been carried out to sample the energy surface for the interactions of the benzene dimers. This database has been used to parameterize two anisotropic single-site models, meant to be used as building blocks in hybrid models of complex, liquid crystal forming molecules. A quadrupolar Gay-Berne (GBQIII) and an S-function (SF) Corner potentials have been obtained in this way. Their ability to reproduce, qualitatively at least, the phase diagram as well as energetic and structural properties of benzene has been tested with Monte Carlo simulations and compared with previous literature potentials, GBQI [S. Gupta et al., Mol. Phys. 65, 961 (1988)] and GBQII [T. R. Walsh, Mol. Phys. 100, 2867 (2002)]. It turned out that GBQI showed no melting transition in the temperature range explored (100-400 K), while GBQII underwent a phase transition from solid to gas, with no liquid phase. Conversely, both models parameterized on our database of ab initio interaction energies (GBQIII and SF) gave rise to a stable liquid phase. Melting has been observed between 100 and 150 K (GBQIII) and in the range 300-350 K (SF), i.e., substantially below and slightly above the experimental value at ambient pressure, 278 K. The description of the crystal structure of benzene at atmospheric pressure is also in better agreement with experimental data if the SF model is used, while positional correlations in the liquid are better described by the GBQIII potential. The S-function potential is also computationally more convenient. These results could be useful in the semirealistic modeling of more complex molecules.
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Affiliation(s)
- I Cacelli
- Dipartimento di Chimica e Chimica Industriale, Universita' di Pisa, Via Risorgimento 35, I-56126, Italy.
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Tani A, Zhang D, Duine JA, Kawai F. Treatment of the yeast Rhodotorula glutinis with AlCl3 leads to adaptive acquirement of heritable aluminum resistance. Appl Microbiol Biotechnol 2004; 65:344-8. [PMID: 14740194 DOI: 10.1007/s00253-003-1546-6] [Citation(s) in RCA: 9] [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] [Received: 10/02/2003] [Revised: 12/06/2003] [Accepted: 12/12/2003] [Indexed: 11/30/2022]
Abstract
When aluminum (Al) was added to a culture, growth of Rhodotorula glutinis IFO1125 was temporarily arrested, showing longer lag phases, depending on the Al concentrations (50-300 microM) added, but the growth rates were not affected at all. Resistant strains obtained by one round of plate treatment containing Al reverted the resistance level to the wild-type level when cultivated without Al. Repeated Al treatments, however, induced heritable and stable Al resistance, the level of which was increased up to 4,000 microM by stepwise increments in Al concentrations. Thus, the heritable Al resistance adaptively acquired was due neither to adaptation nor to mutation, but to a mechanism which has yet to be studied. Heritable Al resistance seemed to release the Al inhibition of magnesium uptake.
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Affiliation(s)
- A Tani
- Research Institute for Bioresources, Okayama University, 2-20-1 Chuo, Kurashiki, 710-0046, Okayama, Japan
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Futamura A, Yoshida Y, Tani A. [Chronic nephrotic syndrome as an example of nursing home care service]. Gan To Kagaku Ryoho 2003; 30 Suppl 1:157. [PMID: 14708324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
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Futamura A, Yoshida Y, Tani A. [Chronic nephrotic syndrome as an example of nursing home care service]. Gan To Kagaku Ryoho 2003; 30:157. [PMID: 15311791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
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Formigli L, Ibba-Manneschi L, Perna AM, Pacini A, Polidori L, Nediani C, Modesti PA, Nosi D, Tani A, Celli A, Neri-Serneri GG, Quercioli F, Zecchi-Orlandini S. Altered Cx43 expression during myocardial adaptation to acute and chronic volume overloading. Histol Histopathol 2003; 18:359-69. [PMID: 12647785 DOI: 10.14670/hh-18.359] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Gap-junctions are specialized regions of intercellular contacts allowing electrical impulse propagation among adjacent cardiomyocytes. Connexin43 (Cx43) is the predominant gap-junction protein in the working ventricular myocardium and its reduced expression has been extensively implicated in the genesis of conduction abnormalities and re-entry arrhythmia of chronically hypertrophied hearts. In contrast, data on the role played by this protein during cardiac remodeling and early phases of developing hypertrophy are lacking. Therefore, in the present study, we investigated this issue using an experimental model of pig left ventricle (LV) volume overloading consisting in the creation of an aorto-cava fistula. At scheduled times (6, 24, 48, 96, 168 h, and 2, 3 months after surgery) echocardiographic and haemodynamic measurements were performed and myocardial biopsies were taken for the morphological and biochemical analyses. When faced with the increased load, pig myocardium underwent an initial period (from 6 up to 48 h) of remarkable tissue remodeling consisting in the occurrence of cardiomyocyte damage and apoptosis. After that time, the tissue developed a hypertrophic response that was associated with early dynamic changes (up-regulation) in Cx43 protein expression, as demonstrated by Western blot and confocal immunofluorescence analyses. However, an initial transient increase of this protein was also found after 6 h from surgery. With the progression of LV hypertrophy (from 168 hr up to 3 months), a reduction in the myocardial Cx43 expression was, instead, observed. The increased expression of Cx43 protein during acute hypertrophic response was associated with a corresponding increase in the levels of its specific mRNA, as detected by RT-PCR. We concluded that up-regulation of Cx43 gap-junction protein could represent an immediate compensatory response to support the new working conditions in the early stages of ventricular overloading.
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Affiliation(s)
- L Formigli
- Department of Anatomy, Histology, Forensic Medicine, University of Florence, Florence, Italy
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Kitaya Y, Kawai M, Tsuruyama J, Takahashi H, Tani A, Goto E, Saito T, Kiyota M. The effect of gravity on surface temperatures of plant leaves. Plant Cell Environ 2003; 26:497-503. [PMID: 12817604 DOI: 10.1046/j.1365-3040.2003.00980.x] [Citation(s) in RCA: 8] [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] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A fundamental study was conducted to develop a facility having an adequate air circulation system for growing healthy plants over a long-term under microgravity conditions in space. To clarify the effects of gravity on heat exchange between plant leaves and the ambient air, surface temperatures of sweet potato and barley leaves and replica leaves made of wet paper and copper were evaluated at gravity levels of 0.01, 1.0, 1.5 and 2.0 g for 20 s each during parabolic aeroplane flights. Thermal images were captured using infrared thermography at an air temperature of 26 degrees C, a relative humidity of 18% and an irradiance of 260 W m-2. Mean leaf temperatures increased by 0.9-1.0 degrees C with decreasing gravity levels from 1.0 to 0.01 g and decreased by 0.5 degrees C with increasing gravity levels from 1.0 to 2.0 g. The increase in leaf temperatures was at most 1.9 degrees C for sweet potato leaves over 20 s as gravity decreased from 1.0 to 0.01 g. The boundary layer conductance to sensible heat exchange decreased by 5% when the gravity decreased from 1.0 to 0.01 g at the air velocity of 0.2 m s-1. The decrease in the boundary layer conductance with decrease in the gravity levels was more significant in a lower air velocity. Heat exchange between leaves and the ambient air was more retarded at lower gravity levels because of less sensible and latent heat transfers with less heat convection.
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Affiliation(s)
- Y Kitaya
- Graduate School of Agriculture and Biological Sciences, Osaka Prefecture University, Gakuen-cho, Sakai, Osaka, Japan.
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Hewitt CN, Hayward S, Tani A. The application of proton transfer reaction-mass spectrometry (PTR-MS) to the monitoring and analysis of volatile organic compounds in the atmosphere. J Environ Monit 2003; 5:1-7. [PMID: 12619749 DOI: 10.1039/b204712h] [Citation(s) in RCA: 154] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Proton transfer reaction-mass spectrometry (PTR-MS) is a new and emerging technique for the measurement and monitoring of volatile organic compounds (VOCs) at low concentrations in gaseous samples in more-or-less real time. Utilising chemical ionisation, it combines the desirable attributes of high sensitivity and short integration times with good precision and accuracy. Recently it has been exploited in applications related to atmospheric science. Here, the principles of operation of the PTR-MS are described, its advantages and disadvantages discussed, its inherent uncertainties highlighted, some of its uses in atmospheric sciences reviewed, and some suggestions made on its future application to atmospheric chemistry.
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Affiliation(s)
- C N Hewitt
- Department of Environmental Science, Institute of Environmental and Natural Sciences, Lancaster University, Lancaster, UK LA1 4YQ
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Formigli L, Meacci E, Vassalli M, Nosi D, Quercioli F, Tiribilli B, Tani A, Squecco R, Francini F, Bruni P, Zecchi Orlandini S. Sphingosine 1-phosphate induces cell contraction via calcium-independent/Rho-dependent pathways in undifferentiated skeletal muscle cells. J Cell Physiol 2003; 198:1-11. [PMID: 14584038 DOI: 10.1002/jcp.10366] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
We have previously shown that sphingosine 1-phosphate (S1P) can induce intracellular Ca(2+) mobilization and cell contraction in C2C12 myoblasts and that the two phenomena are temporally unrelated. Although Ca(2+)-independent mechanisms of cell contraction have been the focus of numerous studies on Ca(2+) sensitization of smooth muscle, comparatively less studies have focused on the role that these mechanisms play in the regulation of skeletal muscle contractility. Phosphorylation and activation of myosin by Rho-dependent kinase mediate most of Ca(2+)-independent contractile responses. In the present study, we examined the potential role of Rho/Rho-kinase cascade activation in S1P-induced C2C12 cell contraction. First, we showed that depletion of Ca(2+), by pre-treatment with BAPTA, did not affect S1P-induced myoblastic contractility, whereas it abolished S1P-induced Ca(2+) transients. These results correlated with the absence of troponin C and with the immature cytoskeletal organization of these cells. Experimental evidence demonstrating the involvement of Rho pathway in S1P-stimulated myoblast contraction included: the activation/translocation of RhoA to the membrane in response to agonist-stimulation in cells depleted of Ca(2+) and the inhibition of dynamic changes of the actin cytoskeleton in cells where Rho functions had been inhibited either by overexpression of RhoGDI, a physiological inhibitor of GDP dissociation from Rho proteins, or by pretreatment with Y-27632, a specific Rho kinase inhibitor. Contribution of protein kinase C in this cytoskeletal rearrangement was also evaluated. However, the pretreatment with Gö6976 or rottlerin, specific inhibitors of PKC alpha and PKC delta, respectively, failed to inhibit the agonist-induced myoblastic contraction. Single particle tracking of G-actin fluorescent probe was performed to statistically evaluate actin cytoskeletal dynamics in response to S1P. Stimulation with S1P was also able to increase the phosphorylation level of myosin light chain II. In conclusion, our results strongly suggest that Ca(2+)-independent/Rho-Rho kinase-dependent pathways may exert an important role in S1P-induced myoblastic cell contraction.
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Affiliation(s)
- L Formigli
- Department of Anatomy, Histology, Forensic Medicine, University of Florence, Italy
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Ibba-Manneschi L, Del Rosso A, Pacini S, Tani A, Bechi P, Matucci Cerinic M. Ultrastructural study of the muscle coat of the gastric wall in a case of systemic sclerosis. Ann Rheum Dis 2002; 61:754-6. [PMID: 12117690 PMCID: PMC1754189 DOI: 10.1136/ard.61.8.754] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Abstract
A 17-year-old girl with hereditary multiple exostoses, who was thought to have malignant transformation of an exostotic lesion, was examined by bone and Tl-201 chloride scintigraphy. Scintigraphy showed markedly intense uptake by the lesion, whereas Tl-201 imaging did not. Bone scintigraphy revealed intense to moderate uptake in other exostotic lesions, but none was apparent on the Tl-201 study. The lesion was resected and the histopathologic diagnosis was osteochondroma. Negative findings of Tl-201 scintigraphy may not exclude the possibility of chondrosarcoma, and the utility of this method may be limited. However, Tl-201 scintigraphy appears to have a useful role in differentiating malignant transformation from benign osteochondroma in hereditary multiple exostoses.
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Affiliation(s)
- A Tani
- Department of Radiology, Faculty of Medicine, Kagoshima University, Kagoshima, Japan
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Tani A, Thomson AJ, Butt JN. Methylene blue as an electrochemical discriminator of single- and double-stranded oligonucleotides immobilised on gold substrates. Analyst 2001; 126:1756-9. [PMID: 11693619 DOI: 10.1039/b104260m] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.5] [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: 11/21/2022]
Abstract
Self-assembly of thiol-terminated oligonucleotides on gold substrates provides a convenient and versatile route to DNA-functionalised surfaces. Here we show that the square-wave voltammetric peak position of methylene blue complexed to thiol-terminated single-stranded oligonucleotides immobilised on gold electrodes differs from that of methylene blue complexed to thiol-terminated double-stranded oligonucleotides immobilised on gold electrodes. The peak potential of methylene blue at the single-stranded oligonucleotide array was consistently found to occur at potentials ca. 10-15 mV more positive than that at double-stranded oligonucleotide arrays, the precise difference being dependent on the direction of the voltammetry. This voltammetric behaviour mirrors that found for methylene blue bound to freely diffusing single- and double-stranded calf thymus DNA and suggests that the immobilised oligonucleotides retain the methylene blue binding properties of their freely diffusing counterparts. Thus methylene blue provides a simple electrochemical indicator for the status of oligonucleotide-functionalised gold surfaces.
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Affiliation(s)
- A Tani
- School of Chemical Sciences, University of East Anglia, Norwich, UK
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