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53. Potential effects of climate change on geographic distribution of the Tertiary relict tree species Davidia involucrata in China

Author

Herrando Moraira, Sonia [0000-0002-0488-5112], López-Pujol, Jordi [0000-0002-2091-6222], Tang, Cindy Q., Dong, Yi-Fei, Herrando Moraira, Sonia, Matsui, Tetsuya, Ohashi, Haruka, He, Long-Yuan, Nakao, Katsuhiro, Tanaka, Nobuyuki, Tomita, Mizuki, Li, Xiao-Shuang, Yan, Hai-Zhong, Peng, Ming-Chun, Hu, Jun, Yang, Ruo-Han, Li, Wang-Jun, Yan, Kai, Hou, Xiuli, López-Pujol, Jordi, Herrando Moraira, Sonia [0000-0002-0488-5112], López-Pujol, Jordi [0000-0002-2091-6222], Tang, Cindy Q., Dong, Yi-Fei, Herrando Moraira, Sonia, Matsui, Tetsuya, Ohashi, Haruka, He, Long-Yuan, Nakao, Katsuhiro, Tanaka, Nobuyuki, Tomita, Mizuki, Li, Xiao-Shuang, Yan, Hai-Zhong, Peng, Ming-Chun, Hu, Jun, Yang, Ruo-Han, Li, Wang-Jun, Yan, Kai, Hou, Xiuli, and López-Pujol, Jordi

Abstract

The conservation and management of Tertiary relict plants will eventually depend on knowledge of their geographic distribution and the environmental changes that threaten them. This study, using species distribution modeling (involving a new approach that allows for uncertainty), predicts the distribution of climatically suitable areas prevailing during the mid-Holocene, the Last Glacial Maximum (LGM), and at present, and estimates the potential formation of new habitats in 2070 of the endangered and rare Tertiary relict tree Davidia involucrata Baill. The results regarding the mid-Holocene and the LGM demonstrate that south-central and southwestern China have been long-term stable refugia, and that the current distribution is limited to the prehistoric refugia. Given future distribution under six possible climate scenarios, only some parts of the current range of D. involucrata in the midhigh mountains of south-central and southwestern China would be maintained, while some shift west into higher mountains would occur. Our results show that the predicted suitable area offering high probability (0.5¿1) accounts for an average of only 29.2% among the models predicted for the future (2070), making D. involucrata highly vulnerable. We assess and propose priority protected areas in light of climate change. The information provided will also be relevant in planning conservation of other paleoendemic species having ecological traits and distribution ranges comparable to those of D. involucrata.

Published
2017

54. Potential effects of climate change on geographic distribution of the Tertiary relict tree species Davidia involucrata in China

Author

Pro Natura Foundation, Ministry of Environment (Japan), Consejo Superior de Investigaciones Científicas (España), National Natural Science Foundation of China, Tang, Cindy Q., Dong, Yi-Fei, Herrando Moraira, Sonia, Matsui, Tetsuya, Ohashi, Haruka, He, Long-Yuan, Nakao, Katsuhiro, Tanaka, Nobuyuki, Tomita, Mizuki, Li, Xiao-Shuang, Yan, Hai-Zhong, Peng, Ming-Chun, Hu, Jun, Yang, Ruo-Han, Li, Wang-Jun, Yan, Kai, Hou, Xiuli, Zhang, Zhi-Ying, López-Pujol, Jordi, Pro Natura Foundation, Ministry of Environment (Japan), Consejo Superior de Investigaciones Científicas (España), National Natural Science Foundation of China, Tang, Cindy Q., Dong, Yi-Fei, Herrando Moraira, Sonia, Matsui, Tetsuya, Ohashi, Haruka, He, Long-Yuan, Nakao, Katsuhiro, Tanaka, Nobuyuki, Tomita, Mizuki, Li, Xiao-Shuang, Yan, Hai-Zhong, Peng, Ming-Chun, Hu, Jun, Yang, Ruo-Han, Li, Wang-Jun, Yan, Kai, Hou, Xiuli, Zhang, Zhi-Ying, and López-Pujol, Jordi

Abstract

This study, using species distribution modeling (involving a new approach that allows for uncertainty), predicts the distribution of climatically suitable areas prevailing during the mid-Holocene, the Last Glacial Maximum (LGM), and at present, and estimates the potential formation of new habitats in 2070 of the endangered and rare Tertiary relict tree Davidia involucrata Baill. The results regarding the mid-Holocene and the LGM demonstrate that south-central and southwestern China have been long-term stable refugia, and that the current distribution is limited to the prehistoric refugia. Given future distribution under six possible climate scenarios, only some parts of the current range of D. involucrata in the mid-high mountains of south-central and southwestern China would be maintained, while some shift west into higher mountains would occur. Our results show that the predicted suitable area offering high probability (0.5‒1) accounts for an average of only 29.2% among the models predicted for the future (2070), making D. involucrata highly vulnerable. We assess and propose priority protected areas in light of climate change. The information provided will also be relevant in planning conservation of other paleoendemic species having ecological traits and distribution ranges comparable to those of D. involucrata.

Published
2017

55. Independent association between age and circadian systolic blood pressure patterns in adults with hypertension.

Author

Deng, Ming, Chen, Da ‐ Wei, Dong, Yi ‐ Fei, Lu, Peng, Zhan, Bi ‐ Ming, Xu, Jian ‐ Qing, Ji, Xi ‐ Xin, Li, Ping, Cheng, Xiao ‐ Shu, Chen, Da-Wei, Dong, Yi-Fei, Zhan, Bi-Ming, Xu, Jian-Qing, Ji, Xi-Xin, and Cheng, Xiao-Shu

Subjects
ANTIHYPERTENSIVE agents, AGE distribution, AMBULATORY blood pressure monitoring, BLOOD pressure, CIRCADIAN rhythms, CARDIAC contraction, HEART beat, HYPERTENSION, HYPOTENSION, COMORBIDITY, BODY mass index
Abstract

Previous studies indicate a preliminary association between age and circadian blood pressure (BP) variation. This association would be affected by confounding factors in real-world populations. The authors investigated whether this is a convincingly independent association in a real-world population of adults with hypertension. Clinical data and findings of 24-hour ambulatory BP monitoring were obtained from 297 consecutive adults with hypertension (60.19±0.77 years). BP dipping patterns were categorized based on the percentage of nocturnal BP drop. Multivariate linear regression analysis identified an independent correlation between age and percentage of nocturnal systolic BPdrop (β=-7.296; 95% CI, -10.430 to -4.162 [P<.001]). Reverse dippers were the oldest and extreme dippers were the youngest. A significant age difference was noted among patients grouped into four BP dipping patterns with and without adjustments for sex, body mass index, drugs, diabetes mellitus, smoking, 24-hour mean heart rate, and 24-hour mean systolic and diastolic BP. [ABSTRACT FROM AUTHOR]

Published
2017
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60. Novel mechanism of angiotensin II-induced cardiac injury in hypertensive rats: The critical role of ASK1 and VEGF

Author

Nako, Hisato, Kataoka, Keiichiro, Koibuchi, Nobutaka, Dong, Yi-Fei, Toyama, Kensuke, Yamamoto, Eiichiro, Yasuda, Osamu, Ichijo, Hidenori, Ogawa, Hisao, Kim-Mitsuyama, Shokei, ナコウ, ヒサト, カタオカ, ケイイチロウ, コイブチ, ノブタカ, トヤマ, ケンスケ, ヤマモト, エイイチロウ, ヤスダ, オサム, イチジョウ, ヒデノリ, オガワ, ヒサオ, ミツヤマ, ショウケイ, 名幸, 久仁, 片岡, 恵一郎, 鯉渕, 信孝, 董, 一飛, 外山, 研介, 山本, 英一郎, 安田, 修, 一條, 秀憲, 小川, 久雄, 光山, 勝慶, Nako, Hisato, Kataoka, Keiichiro, Koibuchi, Nobutaka, Dong, Yi-Fei, Toyama, Kensuke, Yamamoto, Eiichiro, Yasuda, Osamu, Ichijo, Hidenori, Ogawa, Hisao, Kim-Mitsuyama, Shokei, ナコウ, ヒサト, カタオカ, ケイイチロウ, コイブチ, ノブタカ, トヤマ, ケンスケ, ヤマモト, エイイチロウ, ヤスダ, オサム, イチジョウ, ヒデノリ, オガワ, ヒサオ, ミツヤマ, ショウケイ, 名幸, 久仁, 片岡, 恵一郎, 鯉渕, 信孝, 董, 一飛, 外山, 研介, 山本, 英一郎, 安田, 修, 一條, 秀憲, 小川, 久雄, and 光山, 勝慶

Abstract

This study was undertaken to elucidate a novel mechanism underlying angiotensin II-induced cardiac injury, focusing on the role of oxidative stress and myocardial capillary density. Salt-loaded Dahl salt-sensitive hypertensive rats (DS rats), a useful model for hypertensive cardiac remodeling or heart failure, were orally given irbesartan (an AT1 receptor blocker), tempol (a superoxide dismutase mimetic) or hydralazine (a vasodilator). Irbesartan significantly ameliorated left ventricular ischemia and prevented the development of cardiac hypertrophy and fibrosis in DS rats. The benefits were associated with the attenuation of oxidative stress, normalization of myocardial capillary density and inhibition of capillary endothelial apoptosis. Moreover, DS rats with significant cardiac hypertrophy and fibrosis displayed decreased myocardial vascular endothelial growth factor (VEGF) expression and increased cardiac apoptosis signal-regulating kinase 1 (ASK1) activation. Treatment with irbesartan significantly reversed these phenotypes. Tempol treatment of DS rats mimicked all the above-mentioned effects of irbesartan, indicating the critical role of oxidative stress in cardiac injury. We also investigated the role of VEGF and ASK1 in oxidative stress-induced endothelial apoptosis by using cultured endothelial cells from wild-type and ASK1-deficient mice. Oxidative stress-induced ASK1 activation led to endothelial apoptosis, and VEGF treatment prevented oxidative stress-induced endothelial apoptosis by inhibiting ASK1 activation. We obtained the first evidence that oxidative stress-induced cardiac VEGF repression and ASK1 activation caused the enhancement of endothelial apoptosis and contributed to a decrease in myocardial capillary density. These effects resulted in angiotensin II-induced progression of cardiac injury.

Published
2012

61. Calcium Channel Blockers, More than Diuretics, Enhance Vascular Protective Effects of Angiotensin Receptor Blockers in Salt-Loaded Hypertensive Rats

Author

Yamamoto, Eiichiro, primary, Kataoka, Keiichiro, additional, Dong, Yi-Fei, additional, Koibuchi, Nobutaka, additional, Toyama, Kensuke, additional, Sueta, Daisuke, additional, Katayama, Tetsuji, additional, Yasuda, Osamu, additional, Ogawa, Hisao, additional, and Kim-Mitsuyama, Shokei, additional

Published
2012
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62. Amlodipine enhances amelioration of vascular insulin resistance, oxidative stress, and metabolic disorders by candesartan in metabolic syndrome rats

Author

Sueta, Daisuke, primary, Nakamura, Taishi, additional, Dong, Yi-Fei, additional, Kataoka, Keiichiro, additional, Koibuchi, Nobutaka, additional, Yamamoto, Eiichiro, additional, Toyama, Kensuke, additional, Yasuda, Osamu, additional, Ogawa, Hisao, additional, and Kim-Mitsuyama, Shokei, additional

Published
2012
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66. Novel mechanism of salt-induced glomerular injury

Author

Nakamura, Taishi, primary, Kataoka, Keiichiro, additional, Tokutomi, Yoshiko, additional, Nako, Hisato, additional, Toyama, Kensuke, additional, Dong, Yi-Fei, additional, Koibuchi, Nobutaka, additional, Yamamoto, Eiichiro, additional, Yasuda, Osamu, additional, Ogawa, Hisao, additional, and Kim-Mitsuyama, Shokei, additional

Published
2011
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68. Telmisartan protects against diabetic vascular complications in a mouse model of obesity and type 2 diabetes, partially through peroxisome proliferator activated receptor-γ-dependent activity

Author

Toyama, Kensuke, primary, Nakamura, Taishi, additional, Kataoka, Keiichiro, additional, Yasuda, Osamu, additional, Fukuda, Masaya, additional, Tokutomi, Yoshiko, additional, Dong, Yi-Fei, additional, Ogawa, Hisao, additional, and Kim-Mitsuyama, Shokei, additional

Published
2011
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69. Perindopril, a centrally active angiotensin‐converting enzyme inhibitor, prevents cognitive impairment in mouse models of Alzheimer's disease

Author

Dong, Yi‐Fei, primary, Kataoka, Keiichiro, additional, Tokutomi, Yoshiko, additional, Nako, Hisato, additional, Nakamura, Taishi, additional, Toyama, Kensuke, additional, Sueta, Daisuke, additional, Koibuchi, Nobutaka, additional, Yamamoto, Eiichiro, additional, Ogawa, Hisao, additional, and Kim‐Mitsuyama, Shokei, additional

Published
2011
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72. Nifedipine prevents vascular endothelial dysfunction in a mouse model of obesity and type 2 diabetes, by improving eNOS dysfunction and dephosphorylation

Author

Yamamoto, Eiichiro, primary, Nakamura, Taishi, additional, Kataoka, Keiichiro, additional, Tokutomi, Yoshiko, additional, Dong, Yi-Fei, additional, Fukuda, Masaya, additional, Nako, Hisato, additional, Yasuda, Osamu, additional, Ogawa, Hisao, additional, and Kim-Mitsuyama, Shokei, additional

Published
2010
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78. Aliskiren Enhances the Protective Effects of Valsartan Against Cardiovascular and Renal Injury in Endothelial Nitric Oxide Synthase–Deficient Mice

Author

Yamamoto, Eiichiro, primary, Kataoka, Keiichiro, additional, Dong, Yi-Fei, additional, Nakamura, Taishi, additional, Fukuda, Masaya, additional, Tokutomi, Yoshiko, additional, Matsuba, Shinji, additional, Nako, Hisato, additional, Nakagata, Naomi, additional, Kaneko, Takehito, additional, Ogawa, Hisao, additional, and Kim-Mitsuyama, Shokei, additional

Published
2009
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86. Automatic image capturing and processing for PetrolWatch.

Author

Dong, Yi Fei, Kanhere, Salil, Chou, Chun Tung, and Ren Ping Liu

Abstract

In our previous work [1], we proposed a Participatory Sensing (PS) architecture called PetrolWatch to collect and share fuel prices from camera images of road-side price board (billboard) of service (or gas) stations. A key part of the PetrolWatch architecture, and the main focus of this paper, is the automatic billboard image capture from a moving car without user intervention. We develop the system design and implementation of the automatic image collection for PetrolWatch. Capturing a clear image by an unassisted mobile phone from a moving car is proved to be a challenge by our street driving experiments. We design the camera control and image pre-selection schemes to address this challenge. In particular, we leverage the advanced capabilities of modern mobile phones to design an acceptable camera triggering range and set the camera focus accordingly. Experiment results show that our design improve fuel price extraction rate by more than 40%. To deal with blurred images caused by vehicle vibrations, we design a set of pre-selection thresholds based on the measures from embedded accelerometer of the mobile phone. Our experiments show that our pre-selection improves the system efficiency by eliminating 78.57% of the blurred images. [ABSTRACT FROM PUBLISHER]

Published
2011
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87. Association of Endothelial and Mild Renal Dysfunction With the Severity of Left Ventricular Hypertrophy in Hypertensive Patients.

Author

Cao C, Hu JX, Dong YF, Zhan R, Li P, Su H, Peng Q, Wu T, Huang X, Sun WH, Wu QH, and Cheng XS

Subjects
Aged, Cross-Sectional Studies, Female, Glomerular Filtration Rate, Humans, Hyperemia physiopathology, Hypertension diagnosis, Hypertension physiopathology, Hypertrophy, Left Ventricular diagnosis, Hypertrophy, Left Ventricular physiopathology, Kidney Diseases diagnosis, Kidney Diseases physiopathology, Linear Models, Logistic Models, Male, Middle Aged, Multivariate Analysis, Odds Ratio, Risk Factors, Vascular Stiffness, Blood Pressure, Endothelium, Vascular physiopathology, Hypertension complications, Hypertrophy, Left Ventricular etiology, Kidney physiopathology, Kidney Diseases etiology, Vascular Remodeling
Abstract

Background: The association between impaired renal function and increase left ventricular mass was shown to be related to increase in arterial stiffness, which indicates that vascular homeostasis and remodeling may impact the left ventricular hypertrophy (LVH) in patients with renal dysfunction., Methods: We measured the peripheral arterial reactive hyperemia index (RHI) and estimated glomerular filtration rate (eGFR) in 317 hypertensive patients comprising 115 normal RHI (RHI > 1.67) and normal eGFR (eGFR ≥ 90ml/min per 1.73 m(2)), 136 low RHI (RHI ≤ 1.67), 27 low eGFR (60 ≤ eGFR < 90ml/min per 1.73 m(2)) and 39 low RHI combined with low eGFR., Results: Multivariate logistic regression analysis identified lg RHI (odds ratio (OR): 0.001, 95% confidence interval (CI): 10(-6) to 0.426, P = 0.024) and lg eGFR (OR: 0.009, 95% CI: 10(-4) to 0.414, P = 0.016) as independent factors correlated with LVH respectively in hypertensive patients. Compared with normal RHI and eGFR patients, the extent of LVH in patients with either low RHI (OR: 1.224 95% CI: 0.451 to 3.327, P = 0.691) or low eGFR (OR: 0.593 95% CI: 0.070 to 5.037, P = 0.632) did not significantly increase, while it increased significantly in patients with low RHI combined with low eGFR (OR: 4.629 95% CI: 1.592 to 13.458, P = 0.005)., Conclusions: The concurrence of endothelial and mild renal dysfunction was significantly associated with the severity of LVH in hypertensive patients., (© American Journal of Hypertension, Ltd 2015. All rights reserved. For Permissions, please email: journals.permissions@oup.com.)

Published
2016
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88. Novel mechanism of angiotensin II-induced cardiac injury in hypertensive rats: the critical role of ASK1 and VEGF.

Author

Nako H, Kataoka K, Koibuchi N, Dong YF, Toyama K, Yamamoto E, Yasuda O, Ichijo H, Ogawa H, and Kim-Mitsuyama S

Subjects
Animals, Antihypertensive Agents pharmacology, Apoptosis drug effects, Biphenyl Compounds pharmacology, Blood Pressure physiology, Blotting, Western, Capillaries drug effects, Cells, Cultured, Cyclic N-Oxides pharmacology, Endothelial Cells drug effects, Heart Diseases diagnostic imaging, Heart Diseases pathology, Hydralazine pharmacology, Hypertension complications, Hypertension diagnostic imaging, Hypertrophy, Left Ventricular pathology, Immunohistochemistry, Irbesartan, Myocardial Ischemia physiopathology, Oxidative Stress drug effects, Rats, Rats, Inbred Dahl, Reactive Oxygen Species metabolism, Real-Time Polymerase Chain Reaction, Spin Labels, Superoxides metabolism, Tetrazoles pharmacology, Ultrasonography, Angiotensin II toxicity, Heart Diseases chemically induced, Hypertension physiopathology, MAP Kinase Kinase Kinase 5 physiology, Vascular Endothelial Growth Factor A physiology
Abstract

This study was undertaken to elucidate a novel mechanism underlying angiotensin II-induced cardiac injury, focusing on the role of oxidative stress and myocardial capillary density. Salt-loaded Dahl salt-sensitive hypertensive rats (DS rats), a useful model for hypertensive cardiac remodeling or heart failure, were orally given irbesartan (an AT1 receptor blocker), tempol (a superoxide dismutase mimetic) or hydralazine (a vasodilator). Irbesartan significantly ameliorated left ventricular ischemia and prevented the development of cardiac hypertrophy and fibrosis in DS rats. The benefits were associated with the attenuation of oxidative stress, normalization of myocardial capillary density and inhibition of capillary endothelial apoptosis. Moreover, DS rats with significant cardiac hypertrophy and fibrosis displayed decreased myocardial vascular endothelial growth factor (VEGF) expression and increased cardiac apoptosis signal-regulating kinase 1 (ASK1) activation. Treatment with irbesartan significantly reversed these phenotypes. Tempol treatment of DS rats mimicked all the above-mentioned effects of irbesartan, indicating the critical role of oxidative stress in cardiac injury. We also investigated the role of VEGF and ASK1 in oxidative stress-induced endothelial apoptosis by using cultured endothelial cells from wild-type and ASK1-deficient mice. Oxidative stress-induced ASK1 activation led to endothelial apoptosis, and VEGF treatment prevented oxidative stress-induced endothelial apoptosis by inhibiting ASK1 activation. We obtained the first evidence that oxidative stress-induced cardiac VEGF repression and ASK1 activation caused the enhancement of endothelial apoptosis and contributed to a decrease in myocardial capillary density. These effects resulted in angiotensin II-induced progression of cardiac injury.

Published
2012
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