Browsing by Author "Huang, Chen-Cheng"

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Quantiferon TB-Gold conversion can predict active tuberculosis development in elderly nursing home residents
(2015-10-01)
Tsou, Ping-Hsien
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Huang, Wei-Chang
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Huang, Chen-Cheng
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Lin, Chen-Fu
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Wu, Kun-Ming
AimThe study was carried out on elderly nursing home residents in Taiwan. We assessed whether the serial QuantiFERON-TB Gold (QFT-G) assay and serial tuberculin skin test (TST) were reliable tools to predict or exclude the development of active tuberculosis (TB). MethodsThis prospective observational cohort study involved non-bacillus Calmette-Guerin-vaccinated 259 elderly nursing home residents free of active TB at baseline. Of these, 147 were eligible for follow up. Participants underwent serial QFT-G and TST at baseline and 2-year follow up, and were monitored for active TB over 5years. Agreement between QFT-G and TST, incidence rate ratio, positive predictive value, and negative predictive value for progression to active TB were measured. ResultsDuring 5-year follow up, three participants developed active TB. The agreement between these two tests was 54.13% (?=0.167, P=0.001). The incidence rate ratio was 15.8 (P=0.016) for the QFT-G-conversion group compared with the TST-positive group at baseline. Positive predictive value for QFT-G conversion groups was 25%. Negative predictive value was 100% for the TST-negative group at baseline. ConclusionIn the elderly nursing home residents, QFT-G conversion is a more reliable tool to predict the development of active TB. Meanwhile, TST is a valuable tool for predicting the chance of not developing active TB. Geriatr Gerontol Int 2015; 15: 1179-1184.
SoRT(2): a tool for sorting genomes and reconstructing phylogenetic trees by reversals, generalized transpositions and translocations
(2010-07-01)
Huang, Yen-Lin
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Huang, Chen-Cheng
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Tang, Chuan Yi
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Lu, Chin Lung
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生物科技學系
SoRT(2) is a web server that allows the user to perform genome rearrangement analysis involving reversals, generalized transpositions and translocations (including fusions and fissions), and infer phylogenetic trees of genomes being considered based on their pairwise genome rearrangement distances. It takes as input two or more linear/circular multi-chromosomal gene (or synteny block) orders in FASTA-like format. When the input is two genomes, SoRT(2) will quickly calculate their rearrangement distance, as well as a corresponding optimal scenario by highlighting the genes involved in each rearrangement operation. In the case of multiple genomes, SoRT(2) will also construct phylogenetic trees of these genomes based on a matrix of their pairwise rearrangement distances using distance-based approaches, such as neighbor-joining (NJ), unweighted pair group method with arithmetic mean (UPGMA) and Fitch-Margoliash (FM) methods. In addition, if the function of computing jackknife support values is selected, SoRT(2) will further perform the jackknife analysis to evaluate statistical reliability of the constructed NJ, UPGMA and FM trees. SoRT(2) is available online at http://bioalgorithm.life.nctu.edu.tw/SORT2/.