Taipei Medical University

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Huang YK
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------>journal_name=Toxicol Appl Pharmacol
------>paper_name=Arsenic Methylation Capability and Hypertension Risk in Subjects Living in Arseniasis-Hyperendemic Areas in Southwestern Taiwan
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------>fullAbstract=BACKGROUND: Cumulative arsenic exposure (CAE) from drinking water has been shown to be associated with hypertension in a dose-response pattern. This study further explored the association between arsenic methylation capability and hypertension risk among residents of arseniasis-hyperendemic areas in Taiwan considering the effect of CAE and other potential confounders. METHOD: There were 871 subjects (488 women and 383 men) and among them 372 were diagnosed as having hypertension based on a positive history or measured systolic blood pressure >or=140 mm Hg and/or diastolic blood pressure >or=90 mm Hg. Urinary arsenic species were determined by high-performance liquid chromatography-hydride generator and atomic absorption spectrometry. Primary arsenic methylation index [PMI, defined as monomethylarsonic acid (MMA(V)) divided by (As(III)+As(V))] and secondary arsenic methylation index (SMI, defined as dimethylarsinic acid divided by MMA(V)) were used as indicators for arsenic methylation capability. RESULTS: The level of urinary arsenic was still significantly correlated with cumulative arsenic exposure (CAE) calculated from a questionnaire interview (p=0.02) even after the residents stopped drinking the artesian well water for 2-3 decades. Hypertensive subjects had higher percentages of MMA(V) and lower SMI than subjects without hypertension. However, subjects having CAE >0 mg/L-year had higher hypertension risk than those who had CAE=0 mg/L-year disregard a high or low methylation index. CONCLUSION: Inefficient arsenic methylation ability may be related with hypertension risk.
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------>authors2=Tseng CH
------>authors3=Huang YL
------>authors4=Yang MH
------>authors5=Chen CJ
------>authors6=Hsueh YM
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------>authors=Huang YK
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------>updateTitle=Arsenic methylation capability and hypertension risk in subjects living in arseniasis-hyperendemic areas in southwestern Taiwan.
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------>publish_year=2007
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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z