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Chen CY, Dong YZ, Liu SL, Yeh HC, Li HT, Li WJ, Cheng MJ. A New Naphthalen Derivative from Michelia champaca. Chem Nat Compd 2023. [DOI: 10.1007/s10600-023-03964-2] [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: 04/07/2023]
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Chen CY, Liu CM, Yeh HC, Li WJ, Li HT, Cheng MJ. New Metabolite from Cinnamomum tenuifolium. Chem Nat Compd 2023. [DOI: 10.1007/s10600-023-03988-8] [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: 04/07/2023]
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Chen CY, Liu CM, Yeh HC, Li WJ, Li HT, Chuang CH. Anti-Covid-19 Activity Compounds from Michelia crassipes. Chem Nat Compd 2023; 59:371-373. [PMID: 37266306 PMCID: PMC10068242 DOI: 10.1007/s10600-023-03997-7] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Indexed: 04/05/2023]
Affiliation(s)
- C. Y. Chen
- School of Medical and Health Sciences, Fooyin University, 83102 Kaohsiung, Taiwan
| | - C. M. Liu
- School of Medicine, Yichun University, 576 XueFu Road, Yuanzhou District 336000 Yichun, P. R. China
| | - H. C. Yeh
- School of Medical and Health Sciences, Fooyin University, 83102 Kaohsiung, Taiwan
| | - W. J. Li
- School of Nursing, Fooyin University, 83102 Kaohsiung, Taiwan
| | - H. T. Li
- Department of Medical Laboratory Science and Biotechnology, Fooyin University, 83102 Kaohsiung, Taiwan
| | - C. H. Chuang
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan
- Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan
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Chen CY, Liu SL, Yeh HC, Li HT, Li WJ, Cheng MJ. A New Ketone Derivative from Plukenetia volubilis. Chem Nat Compd 2023. [DOI: 10.1007/s10600-023-03958-0] [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: 04/05/2023]
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Chen CY, Kao CL, Yeh HC, Li HT, Wu MD, Cheng MJ, Tsai HK. A New Disaccharide from Aquilaria sinensis. Chem Nat Compd 2022. [DOI: 10.1007/s10600-022-03852-1] [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: 11/11/2022]
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Chen CY, Liu CM, Yeh HC, Li WJ, Li HT, Cheng MJ. A New β-Ionone from Epimedium sagittatum. Chem Nat Compd 2022. [DOI: 10.1007/s10600-022-03809-4] [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: 12/01/2022]
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Chen CY, Kao CL, Yeh HC, Li HT, Cheng MJ, Li WJ. A Novel Biaryl Ether from Cinnamomum osmophloeum. Chem Nat Compd 2022. [DOI: 10.1007/s10600-022-03799-3] [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: 10/14/2022]
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Chen CY, Kao CL, Kuo CE, Yeh HC, Li HT, Wu MD, Li WJ, Cheng MJ. A Novel Benzenoid from Liriodendron tulipifera. Chem Nat Compd 2022. [DOI: 10.1007/s10600-022-03808-5] [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: 12/01/2022]
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Liu CM, Yeh HC, Li WJ, Wang YC, Li HT, Wang HM, Chen CY. Cytotoxic Constituents of Michelia alba. Chem Nat Compd 2022. [DOI: 10.1007/s10600-022-03792-w] [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: 11/30/2022]
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Chen CY, Liu CM, Yeh HC, Li WJ, Li HT, Cheng MJ, Hsieh PC, Wang HM. A New β-Ionone from Liriodendron tulipifera. Chem Nat Compd 2022. [DOI: 10.1007/s10600-022-03708-8] [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: 11/29/2022]
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Chen CY, Kao CL, Huang ST, Yeh HC, Li HT. A New 4-Pyrane from Michelia figo. Chem Nat Compd 2022. [DOI: 10.1007/s10600-022-03695-w] [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: 11/28/2022]
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Chen CY, Kao CL, Yeh HC, Li HT, Lin RJ. Secondary Metabolites of Mahonia bealei. Chem Nat Compd 2022. [DOI: 10.1007/s10600-022-03629-6] [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: 11/28/2022]
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Chen CY, Wu MD, Yeh HC, Wu HM, Li HT, Cheng MJ. A Novel Biphenyl Derivative from Cinnamomum insulari-montanum. Chem Nat Compd 2022. [DOI: 10.1007/s10600-022-03590-4] [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: 10/19/2022]
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Liu CM, Yeh HC, Wu HM, Li WJ, Li HT, Chuang CH, Chen CY. Flavonoids of Morus alba. Chem Nat Compd 2021. [DOI: 10.1007/s10600-021-03564-y] [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: 11/28/2022]
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Chen CY, Liu CM, Yeh HC, Wu HM, Li WJ, Li HT. Flavonoids of Crithmum maritimum. Chem Nat Compd 2021. [DOI: 10.1007/s10600-021-03512-w] [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: 10/20/2022]
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Liu SL, Kao CL, Yeh HC, Li HT, Chen CY. A New β-Ionone from Cinnamomum burmanni. Chem Nat Compd 2021. [DOI: 10.1007/s10600-021-03498-5] [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: 10/20/2022]
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Chen CY, Kao CL, Yeh HC, Li HT, Wu MD, Cheng MJ, Li WJ. A New Benzylisoquinoline from Nelumbo nucifera cv. Rosa-plena. Chem Nat Compd 2021. [DOI: 10.1007/s10600-021-03456-1] [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: 10/20/2022]
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Chen CY, Kao CL, Yeh HC, Li HT, Wu MD, Cheng MJ. A New 2H-Pyran of Michelia compressa var. compressa. Chem Nat Compd 2021. [DOI: 10.1007/s10600-021-03383-1] [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: 11/30/2022]
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Chen CY, Liu CL, Kao CL, Yeh HC, Li HT, Li WJ, Chang HW. Secondary Metabolites of Elaeagnus grandifolia. Chem Nat Compd 2020. [DOI: 10.1007/s10600-020-03130-y] [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: 11/29/2022]
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Liu CC, Lee YC, Tsai VFS, Cheng KH, Wu WJ, Bao BY, Huang CN, Yeh HC, Tsai CC, Wang CJ, Huang SP. The interaction of serum testosterone levels and androgen receptor CAG repeat polymorphism on the risk of erectile dysfunction in aging Taiwanese men. Andrology 2015. [PMID: 26216079 DOI: 10.1111/andr.12068] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [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: 12/12/2022]
Abstract
Testosterone has been found to play important roles in men's sexual function. However, the effects of testosterone can be modulated by androgen receptor (AR) CAG repeat polymorphism. It could also contribute to the risk of erectile dysfunction (ED). The aim of this study is to evaluate the interaction of serum testosterone levels and AR CAG repeat polymorphism on the risk of ED in aging Taiwanese men. This cross-sectional data of Taiwanese men older than 40 years were collected from a free health screening held between August 2010 and August 2011 in Kaohsiung city, Taiwan. All participants completed a health questionnaires included five-item version of the International Index of Erectile Function (IIEF-5) and the International Prostate Symptoms Score, received a detailed physical examination and provided 20 cm3 whole blood samples for biochemical and genetic evaluation. The IIEF-5 was used to evaluate ED. Serum albumin, total testosterone (TT), and sex hormone-binding globulin levels were measured. Free testosterone level was calculated. AR gene CAG repeat polymorphism was determined by direct sequencing. Finally, 478 men with the mean age of 55.7 ± 4.8 years were included. When TT levels were above 330 ng/dL, the effect of testosterone level on erectile function seemed to reach a plateau and a significantly negative correlation between AR CAG repeat length and the score of IIEF-5 was found (r = -0.119, p = 0.034). After adjusting for other covariates, the longer AR CAG repeat length was still an independent risk factor for ED in subjects with TT above 330 ng/dL (p = 0.006), but not in TT of 330 ng/dL or below. In conclusion, both serum testosterone levels and AR CAG repeat polymorphism can influence erectile function concomitantly. In subjects with normal TT concentration, those with longer AR CAG repeat lengths have a higher risk of developing ED.
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Affiliation(s)
- C C Liu
- Department of Urology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Urology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Depratment of Urology, Pingtung Hospital, Ministry of Health and Welfare, Executive Yuan, Pingtung, Taiwan
| | - Y C Lee
- Department of Urology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Urology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - V F S Tsai
- Department of Urology, Ten-Chan General Hospital, Taoyuan, Taiwan
| | - K H Cheng
- Division of Cardiology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - W J Wu
- Department of Urology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Urology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Urology, Kaohsiung Municipal Hsiao-Kang Hospital, Kaohsiung, Taiwan
| | - B Y Bao
- Department of Pharmacy, China Medical University, Taichung, Taiwan
| | - C N Huang
- Department of Urology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Urology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - H C Yeh
- Department of Urology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Urology, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung, Taiwan
| | - C C Tsai
- Department of Urology, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung, Taiwan
| | - C J Wang
- Department of Urology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Urology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - S P Huang
- Department of Urology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Urology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
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Fan MC, Huang CC, Huang JS, Tsai SF, Yeh HC, Hong CF. First Report of Chrysoporthe deuterocubensis Causing Canker on Syzygium samarangense in Taiwan. Plant Dis 2013; 97:1508. [PMID: 30708484 DOI: 10.1094/pdis-03-13-0345-pdn] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Wax apple (Syzygium samarangense Merr. & Perry, syn. Eugenia javanica Lam.) belongs to the Myrtaceae family is an important economical tree fruit in Taiwan. The total production acreage of wax apple was 5,266 ha in which more than 77% were located in Pingtung County, southern Taiwan, in 2012. Since the winter of 2010, symptoms of withering leaves and cracking branches on wax apple trees were observed in some orchards in Nanjhou and Linbian Townships, Pingtung County. Diseased trees declined gradually and resulted in reduced fruit production. On the bark of diseased twigs and branches, black conidiamata with yellowish orange conidia were usually observed. For diagnosis, tissues from symptomatic branches were excised, surface sterilized with 0.5% sodium hypochlorite, and placed on 2% water agar in petri dishes. A total of four identical fungal isolates were obtained and maintained on potato dextrose agar (PDA). To fulfill Koch's postulates, three twigs of a wax apple tree were wounded with scalpel and inoculated with each of the four isolates, one tree per isolate. A 7-day-old hyphal mat (about 7 × 18 mm) of each fungal isolate was attached on the wound, wrapped with a wet absorbent cotton and Parafilm, and then covered with a layer of aluminum foil. For the control, the twigs of a wax apple tree were inoculated with PDA plugs. The pathogenicity test was repeated once. After 30 days, withering leaves and cracking twigs were observed on inoculated twigs and the same pathogen was reisolated. Conversely, all of the non-inoculated plants remained healthy. Identification of the pathogen was conducted using its morphological, physiological, and molecular characteristics. On malt extract agar, the colony was floccose and white with hazel hues. The optimal temperature for the mycelial growth was 30°C. Conidia were hyaline, and oblong, with the average size of 4.7 ± 0.6 × 2.7 ± 0.2 μm (100 conidia). Ascostromata were semi-immersed in the bark with fusoid asci, eight ascospores per ascus. Ascospores were hyaline, 2-celled, and tapered in both ends, with the average length of 6.8 ± 0.7 × 2.4 ± 0.3 μm (100 ascospores). For molecular identification, the internal transcribed spacer (ITS) of ribosomal DNA and β-tubulin genes was amplified using the ITS1/ITS4 (3), Bt1a/Bt1b, and Bt2a/Bt2b (1) primer pairs. The gene sequences were deposited in GenBank (Accessions KC792616, KC792617, KC792618, and KC792619 for the ITS region; KC792620, KC792621, KC792622, and KC792623 for Bt1 region, and KC812732, KC812733, KC812734, and KC812735 for Bt2 region) and showed 99 to 100% identity to the Chrysoporthe deuterocubensis isolate CMW12745 (DQ368764 for ITS region; GQ290183 for Bt1 region, and DQ368781 for Bt2 region). In addition, the Bt1 region of the β-tubulin gene consisted of two restriction sites for AvaI and one restriction site for HindIII. This is identical to the description of C. deuterocubensis, a cryptic species in C. cubensis, by Van Der Merwe et al. (2). According to these results, the pathogen was identified as C. deuterocubensis Gryzenh. & M. J. Wingf. To the best of our knowledge, this is the first report of canker disease caused by C. deuterocubensis on S. samarangense in Taiwan. References: (1) N. L. Glass and G. C. Donaldson. Appl. Environ. Microbiol. 61:1323, 1995. (2) N. A. Van Der Merwe et al. Fungal Biol. 114:966, 2010. (3) T. J. White et al. Page 315 in: PCR Protocols: A Guide to Methods and Applications. Academic Press, San Diego, 1990.
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Affiliation(s)
- M C Fan
- Department of Plant Protection, Fengshan Tropical Horticultural Experiment Branch, Taiwan Agricultural Research Institute, Kaohsiung 83052, Taiwan, R.O.C
| | - C C Huang
- Department of Tropical Fruit Trees, Fengshan Tropical Horticultural Experiment Branch, Taiwan Agricultural Research Institute, Kaohsiung 83052, Taiwan, R.O.C
| | - J S Huang
- Department of Plant Protection, Fengshan Tropical Horticultural Experiment Branch, Taiwan Agricultural Research Institute, Kaohsiung 83052, Taiwan, R.O.C
| | - S F Tsai
- Department of Plant Protection, Fengshan Tropical Horticultural Experiment Branch, Taiwan Agricultural Research Institute, Kaohsiung 83052, Taiwan, R.O.C
| | - H C Yeh
- Department of Plant Protection, Fengshan Tropical Horticultural Experiment Branch, Taiwan Agricultural Research Institute, Kaohsiung 83052, Taiwan, R.O.C
| | - C F Hong
- Department of Plant Protection, Fengshan Tropical Horticultural Experiment Branch, Taiwan Agricultural Research Institute, Kaohsiung 83052, Taiwan, R.O.C
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Hong CF, Tsai SF, Yeh HC, Fan MC. First Report of Myrothecium roridum Causing Myrothecium Leaf Spot on Dieffenbachia picta 'Camilla' in Taiwan. Plant Dis 2013; 97:1253. [PMID: 30722414 DOI: 10.1094/pdis-02-13-0177-pdn] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Dumb cane (Dieffenbachia picta (Lodd.) Schott 'Camilla'), family Araceae, is a popular houseplant in Taiwan. During the winter of 2012, dumb canes with dark brown concentric spots on leaves and bright yellow borders were found in a protected ornamental nursery in Wandan township, Pingtung County, Taiwan. On diseased leaves, fungal fruiting bodies were sometimes observed in the concentric lesions and a fungal isolate was consistently isolated from the lesions. A single spore isolate, myr 2-2, was maintained on potato dextrose agar (PDA) for further tests. To fulfill Koch's postulates, the spores of myr 2-2 were suspended in sterilized distilled water containing 0.05% of Tween 20, 1 × 105 conidia ml-1, and then sprayed on leaves of D. picta 'Camilla' growing in polypropylene plant pots (about 7 cm in diameter), three plants per treatment. For the control, three plants were sprayed with sterilized distilled water containing 0.05% of Tween 20. Both inoculated and non-inoculated plants were covered with plastic bags and incubated in a growth chamber at 26 ± 1°C. Nine to 12 days after inoculation, symptoms described above were observed on inoculated plants whereas the plants in control remained healthy. The same fungus was reisolated from inoculated plants but not from the controls. Furthermore, the fungal pathogen was identified using its physiological, morphological, and molecular characteristics. In the mycelial growth test, the diameter of the fungal colony reaches 58.2 mm on PDA at 25°C after 14 days. The colonies were floccose, white to buff, and sporulate in concentric zones with olivaceous black to black sporodochia bearing viscid masses of conidia. Conidia were narrowly ellipsoid with rounded ends. The average size of 100 conidia was 6.25 ± 0.04 × 1.63 ± 0.02 μm. For molecular identification, the rDNA internal transcribed spacer (ITS) of isolate myr 2-2 was PCR amplified using ITS1 (5'-TCCGTAGGTGAACCTGCGG-3') and ITS4 (5'- TCCTCCGCTTATTGATATGC-3') primer pairs (3) and sequenced. The rDNA sequence was deposited in GenBank (KC469695) and showed 100% identity to the Myrothecium roridum isolates BBA 71015 (AJ302001) and BBA 67679 (AJ301995) (4). According to the physiological, morphological (1,2), and molecular characteristics, the fungal isolate was identified as M. roridum Tode ex Fr. To the best of our knowledge, this is the first report of Myrothecium leaf spot caused by M. roridum on D. picta 'Camilla' in Taiwan. References: (1) D. F. Farr and A. Y. Rossman. Fungal Databases, Systematic Mycology and Microbiology Laboratory, ARS, USDA. Retrieved from http://nt.ars-grin.gov/fungaldatabases/ , January 31, 2013. (2) M. Tulloch. Mycol. Pap. 130: 1-42, 1972. (3) T. J. White et al. Page 315 in: PCR Protocols: A Guide to Methods and Applications. M. A. Innis et al., eds. Academic Press, New York, 1990. (4) Y. X. Zhang et al. Plant Dis. 95:1030, 2011.
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Affiliation(s)
- C F Hong
- Department of Plant Protection, Fengshan Tropical Horticultural Experiment Branch, Taiwan Agricultural Research Institute, Kaohsiung 83052, Taiwan, R.O.C
| | - S F Tsai
- Department of Plant Protection, Fengshan Tropical Horticultural Experiment Branch, Taiwan Agricultural Research Institute, Kaohsiung 83052, Taiwan, R.O.C
| | - H C Yeh
- Department of Plant Protection, Fengshan Tropical Horticultural Experiment Branch, Taiwan Agricultural Research Institute, Kaohsiung 83052, Taiwan, R.O.C
| | - M C Fan
- Department of Plant Protection, Fengshan Tropical Horticultural Experiment Branch, Taiwan Agricultural Research Institute, Kaohsiung 83052, Taiwan, R.O.C
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Chatterjee R, Colangelo LA, Yeh HC, Anderson CA, Daviglus ML, Liu K, Brancati FL. Potassium intake and risk of incident type 2 diabetes mellitus: the Coronary Artery Risk Development in Young Adults (CARDIA) Study. Diabetologia 2012; 55:1295-303. [PMID: 22322920 PMCID: PMC3934349 DOI: 10.1007/s00125-012-2487-3] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Accepted: 01/05/2012] [Indexed: 10/14/2022]
Abstract
AIMS/HYPOTHESIS Serum potassium has been found to be a significant predictor of diabetes risk, but the effect of dietary potassium on diabetes risk is not clear. We sought to determine if dietary potassium is associated with risk of incident type 2 diabetes in young adults. METHODS We used data from the Coronary Artery Risk Development in Young Adults (CARDIA) Study. Potassium intake was measured by (1) an average of three 24 h urinary potassium collections at the 5-year study visit, and (2) the CARDIA dietary assessment instrument at baseline. Incident type 2 diabetes cases were ascertained on the basis of use of diabetes medication and laboratory measurements. Analyses were adjusted for relevant confounders including intake of fruit and vegetables and other dietary factors. RESULTS Of 1,066 participants with urinary potassium measurements, 99 (9.3%) developed diabetes over 15 years of follow-up. In multivariate models, adults in the lowest urinary potassium quintile were more than twice as likely to develop diabetes as their counterparts in the highest quintile (HR 2.45; 95% CI 1.08, 5.59). Of 4,754 participants with dietary history measurements, 373 (7.8%) developed diabetes over 20 years of follow-up. In multivariate models, African-Americans had a significantly increased risk of diabetes with lower potassium intake, which was not found in whites. CONCLUSIONS/INTERPRETATION Low dietary potassium is associated with increased risk of incident diabetes in African-Americans. Randomised clinical trials are needed to determine if potassium supplementation, from either dietary or pharmacological sources, could reduce the risk of diabetes, particularly in higher-risk populations.
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Affiliation(s)
- R Chatterjee
- Duke University School of Medicine, Sutton Station Internal Medicine, 5832 Fayetteville Road, Suite 113, Durham, NC 27713, USA.
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Affiliation(s)
- C. P. Ko
- Graduate Institute of Space Science, National Central University; Chung-Li Taiwan
| | - H. C. Yeh
- Graduate Institute of Space Science, National Central University; Chung-Li Taiwan
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Abstract
The unique photophysical properties of semiconductor quantum dots (QDs) have made them ideal for use as spectral labels and luminescent probes. In this review, applications are presented in which QDs function as active participants in nanoscale biosensor assemblies, where replacing traditional molecular fluorophores results in improved assay performance. Specific focus is on disease detection with applications including multiplexed target detection, mutation detection by coincidence analysis and QD-based FRET reporters for miRNA detection and DNA methylation analysis.
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Affiliation(s)
- V J Bailey
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, USA
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Liew G, Wang JJ, Klein R, Duncan BB, Yeh HC, Brancati FL, Mitchell P, Wong TY. Birth Weight is Not Related to Risk of Diabetic Retinopathy in Type 2 Diabetes: The Atherosclerosis Risk in Communities Study. Curr Eye Res 2009; 33:193-8. [DOI: 10.1080/02713680701855044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Samuels TA, Bolen S, Yeh HC, Abuid M, Marinopoulos SS, Weiner JP, McGuire M, Brancati FL. Missed opportunities in diabetes management: a longitudinal assessment of factors associated with sub-optimal quality. J Gen Intern Med 2008; 23:1770-7. [PMID: 18787908 PMCID: PMC2585658 DOI: 10.1007/s11606-008-0757-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [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: 11/14/2007] [Revised: 05/13/2008] [Accepted: 07/08/2008] [Indexed: 01/19/2023]
Abstract
BACKGROUND In diabetic adults, tight control of risk factors reduces complications. OBJECTIVE To determine whether failure to make visits, monitor risk factors, or intensify therapy affects control of blood pressure, glucose, and lipids. DESIGN A non-concurrent, prospective study of data from electronic files and standardized abstraction of hard-copy medical records for the period 1/1/1999-12/31/2001. PARTICIPANTS Three hundred eighty-three adults with diabetes managed in an academically affiliated managed care program. MEASUREMENTS Main exposure variable: Intensification of therapy or failure to intensify, reckoned on a quarterly basis. MAIN OUTCOME MEASURE Hemoglobin A1c (A1c), systolic blood pressure (SBP), and LDL-cholesterol at the end of the interval. RESULTS In this visit-adherent cohort, control of glycemia and lipids showed improvement over 24 months, but many patients did not achieve targets. Only those with the worst blood pressure control (SBP >or=160 mmHg) showed any improvement over 2 years. Failure to intensify treatment in patients who kept visits was the single strongest predictor of sub-optimal control. Compared to their counterparts with no failures of intensification, patients with failures in >or=3 quarters showed markedly worse control of blood glucose (A1c 1.4% higher: 95% CI: 0.7, 2.1); hypertension (SBP 22.2 mmHg higher: 95% CI: 16.6, 27.9) and LDL cholesterol (LDL 43.7 mg/dl higher: 95% CI: 24.1, 63.3). These relationships were strong, graded, and independent of socio-demographic factors, baseline risk factor values, and co-morbidities. CONCLUSIONS Failure to intensify therapy leads to suboptimal control, even with adequate visits and monitoring. Interventions designed to promote appropriate intensification should enhance diabetes care in primary practice.
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Affiliation(s)
- T Alafia Samuels
- Department of Epidemiology, Johns Hopkins University, Baltimore, MD, USA.
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Yeh HC, Snipes MB, Eidson AF, Hobbs CH, Henry MC. Comparative Evaluation of Nose-Only Versus Whole-Body Inhalation Exposures for Rats—Aerosol Characteristics and Lung Deposition. Inhal Toxicol 2008. [DOI: 10.3109/08958379009145255] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Chen BT, Benz JV, Finch GL, Mauderly JL, Sabourin PJ, Yeh HC, Snipes MB. Effect of Exposure Mode on Amounts of Radiolabeled Cigarette Particles in Lungs and Gastrointestinal Tracts of F344 Rats. Inhal Toxicol 2008. [DOI: 10.3109/08958379509002569] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Puleo CM, Yeh HC, Liu KJ, Wang TH. Coupling confocal fluorescence detection and recirculating microfluidic control for single particle analysis in discrete nanoliter volumes. Lab Chip 2008; 8:822-5. [PMID: 18432356 DOI: 10.1039/b717941c] [Citation(s) in RCA: 10] [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] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
The recent proliferation of platforms designed to handle arrays of nano- and picolitre volumes is in response to the need to perform biological assays on discrete entities, such as single cells. However, a critical challenge associated with this trend for in vitro compartmentalization is the need for highly sensitive, yet low-volume detection platforms. In this paper, we coupled confocal fluorescence detection with recirculating microfluidic control to perform single particle DNA assays within five nL chambers. The performance of this low-volume assay was shown to match that of traditional single molecule detection platforms. However, volume requirements per measurement were nearly 3 orders of magnitude less than conventional systems, enabling future integration with lab-on-a-chip systems that require discrete or digitalized sample processing.
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Affiliation(s)
- C M Puleo
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
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Lin CH, Richmond AD, Heelis RA, Bailey GJ, Lu G, Liu JY, Yeh HC, Su SY. Theoretical study of the low- and midlatitude ionospheric electron density enhancement during the October 2003 superstorm: Relative importance of the neutral wind and the electric field. ACTA ACUST UNITED AC 2005. [DOI: 10.1029/2005ja011304] [Citation(s) in RCA: 160] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Sun AS, Yeh HC, Wang LH, Huang YP, Maeda H, Pivazyan A, Hsu C, Lewis ER, Bruckner HW, Fasy TM. Pilot study of a specific dietary supplement in tumor-bearing mice and in stage IIIB and IV non-small cell lung cancer patients. Nutr Cancer 2002; 39:85-95. [PMID: 11588907 DOI: 10.1207/s15327914nc391_12] [Citation(s) in RCA: 21] [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: 10/31/2022]
Abstract
Previously, a specific dietary supplement, selected vegetables (SV), was found to be associated with prolonged survival of stage III and IV non-small cell lung cancer (NSCLC) patients. In this study, several anticancer components in SV were measured; the anticancer activity of SV was assessed using a lung tumor model, line 1 in BALB/c mice. SV was also used in conjunction with conventional therapies by stage IIIB and IV NSCLC patients whose survival and clinical responses were evaluated. A daily portion (283 g) of SV was found to contain 63 mg of inositol hexaphosphate, 4.4 mg of daidzein, 2.6 mg of genistein, and 16 mg of coumestrol. Mouse food containing 5% SV (wt/wt) was associated with a 53-74% inhibition of tumor growth rate. Fourteen of the 18 patients who ingested SV daily for 2-46 months were included in the analyses; none showed evidence of toxicity. The first lead case remained tumor free for > 133 months; the second case showed complete regression of multiple brain lesions after using SV and radiotherapy. The median survival time of the remaining 12 patients was 33.5 months, and one-year survival was > 70%. The median survival time of the 16 "intent-to-treat" patients (including ineligible patients) was 20 months, and one-year survival was 55%. The Karnofsky performance status of eligible patients was 55 +/- 13 at entry but improved to 92 +/- 9 after use of SV for five months or longer (p < 0.01). Five patients had stable lesions for 30, 30, 20, 12, and 2 months; two of them, whose primary tumor was resected, used SV alone and demonstrated an objective response of their metastatic tumors. In addition to the two lead cases, eight patients had no new metastases after using SV. Three patients had complete regression of brain metastases after using radiotherapy and SV. In this study, daily ingestion of SV was associated with objective responses, prolonged survival, and attenuation of the normal pattern of progression of stage IIIB and IV NSCLC. A large randomized phase III clinical trial is needed to confirm the results observed in this pilot study.
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Affiliation(s)
- A S Sun
- Connecticut Institute for Aging and Cancer, Milford, CT 06460, USA
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Chen JA, Lai JL, Lee GH, Wang Y, Su JK, Yeh HC, Lin WY, Leung M. Cooperative and selective lithium complexation of 2,11,13,22-tetraaza-5,8,16,19- tetraoxa-1,12-dioxocyclodocosanes. Org Lett 2001; 3:3999-4002. [PMID: 11735569 DOI: 10.1021/ol010189z] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] Ureyleno crown ethers 2 and 3 bind with 2 equiv of Li(+) cooperatively and selectively over other alkali metal ions such as Na(+), K(+), and Cs(+). The binding constant for 3 was found to be 3.0 x 10(7) (L/mol)(2).
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Affiliation(s)
- J A Chen
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 106, Republic of China
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Affiliation(s)
- Y Oppenheim
- Mount Sinai School of Medicine, New York, NY 10029, USA.
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