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Wu CM, Chen XY, Wen CY, Sethares WA. Cooperative Networked PIR Detection System for Indoor Human Localization. Sensors (Basel) 2021; 21:s21186180. [PMID: 34577386 PMCID: PMC8469548 DOI: 10.3390/s21186180] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 08/23/2021] [Accepted: 09/11/2021] [Indexed: 12/01/2022]
Abstract
Pyroelectric Infrared (PIR) sensors are low-cost, low-power, and highly reliable sensors that have been widely used in smart environments. Indoor localization systems can be categorized as wearable and non-wearable systems, where the latter are also known as device-free localization systems. Since the binary PIR sensor detects only the presence of a human motion in its field of view (FOV) without any other information about the actual location, utilizing the information of overlapping FOV of multiple sensors can be useful for localization. In this study, a PIR detector and sensing signal processing algorithms were designed based on the characteristics of the PIR sensor. We applied the designed PIR detector as a sensor node to create a non-wearable cooperative indoor human localization system. To improve the system performance, signal processing algorithms and refinement schemes (i.e., the Kalman filter, a Transferable Belief Model, and a TBM-based hybrid approach (TBM + Kalman filter)) were applied and compared. Experimental results indicated system stability and improved positioning accuracy, thus providing an indoor cooperative localization framework for PIR sensor networks.
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Affiliation(s)
- Chia-Ming Wu
- Department of Electrical Engineering, National Chung Hsing University, Taichung 402, Taiwan; (C.-M.W.); (X.-Y.C.)
| | - Xuan-Ying Chen
- Department of Electrical Engineering, National Chung Hsing University, Taichung 402, Taiwan; (C.-M.W.); (X.-Y.C.)
| | - Chih-Yu Wen
- Department of Electrical Engineering, Bachelor Program of Electrical Engineering and Computer Science, Innovation and Development Center of Sustainable Agriculture (IDCSA), National Chung Hsing University, Taichung 402, Taiwan
- Correspondence: ; Tel.: +886-04-2285-1549
| | - William A. Sethares
- Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA;
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Hsieh AR, Huang YC, Yang YF, Lin HJ, Lin JM, Chang YW, Wu CM, Liao WL, Tsai FJ. Lack of association of genetic variants for diabetic retinopathy in Taiwanese patients with diabetic nephropathy. BMJ Open Diabetes Res Care 2020; 8:8/1/e000727. [PMID: 31958309 PMCID: PMC7039583 DOI: 10.1136/bmjdrc-2019-000727] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 12/11/2019] [Accepted: 01/04/2020] [Indexed: 12/23/2022] Open
Abstract
OBJECTIVE Diabetic nephropathy (DN) and diabetic retinopathy (DR) comprise major microvascular complications of diabetes that occur with a high concordance rate in patients and are considered to potentially share pathogeneses. In this case-control study, we sought to investigate whether DR-related single nucleotide polymorphisms (SNPs) exert pleiotropic effects on renal function outcomes among patients with diabetes. RESEARCH DESIGN AND METHODS A total of 33 DR-related SNPs were identified by replicating published SNPs and via a genome-wide association study. Furthermore, we assessed the cumulative effects by creating a weighted genetic risk score and evaluated the discriminatory and prediction ability of these genetic variants using DN cases according to estimated glomerular filtration rate (eGFR) status along with a cohort with early renal functional decline (ERFD). RESULTS Multivariate logistic regression models revealed that the DR-related SNPs afforded no individual or cumulative genetic effect on the nephropathy risk, eGFR status or ERFD outcome among patients with type two diabetes in Taiwan. CONCLUSION Our findings indicate that larger studies would be necessary to clearly ascertain the effects of individual genetic variants and further investigation is also required to identify other genetic pathways underlying DN.
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Affiliation(s)
- Ai-Ru Hsieh
- Department of Statistics, Tamkang University, Taipei, Taiwan
| | - Yu-Chuen Huang
- School of Chinese Medicine, China Medical University, Taichung, Taiwan
- Human Genetic Center, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Ya-Fei Yang
- Kidney Institute and Division of Nephrology, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Hui-Ju Lin
- School of Chinese Medicine, China Medical University, Taichung, Taiwan
- Department of Ophthalmology, China Medical University Hospital, Taichung, Taiwan
| | - Jane-Ming Lin
- Department of Ophthalmology, China Medical University Hospital, Taichung, Taiwan
| | - Ya-Wen Chang
- Human Genetic Center, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Chia-Ming Wu
- Human Genetic Center, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Wen-Ling Liao
- Graduate Institute of Integrated Medicine, China Medical University, Taichung, Taiwan
- Center for Personalized Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Fuu-Jen Tsai
- School of Chinese Medicine, China Medical University, Taichung, Taiwan
- Human Genetic Center, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
- Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan
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3
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Huang YC, Chen CC, Wang TY, Nguyen HTT, Chen YH, Wu CM, Chang YW, Liao WL, Tsai FJ. C-Reactive Protein Gene Variants and Their Serum Levels in Early Adult-onset Type 2 Diabetes Mellitus. In Vivo 2019; 33:1685-1690. [PMID: 31471424 DOI: 10.21873/invivo.11656] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 07/09/2019] [Accepted: 07/12/2019] [Indexed: 12/19/2022]
Abstract
BACKGROUND/AIM C-Reactive protein (CRP) is a common marker of inflammation. Elevated CRP levels have been associated with increased risk of development of type 2 diabetes mellitus (T2DM). This study aimed to evaluate the association of CRP gene polymorphisms with early-onset T2DM and the effect of genetic variants on CRP level. MATERIALS AND METHODS In total, 948 individuals with early-onset (n=271) or late-onset (n=677) T2DM were enrolled in the study. Five single-nucleotide polymorphisms (SNPs) in the CRP gene, namely rs3093077, rs2808630, rs1800947, rs11265263, and rs11265265, were selected for genotyping, and CRP levels were measured. RESULTS Genotypic, allelic, and haplotype frequencies of these five SNPs were not significantly different between patients with early- and those with late-onset. T2DM Higher serum CRP levels were independently associated with the C-allele of rs3093077 and T-allele of rs11265265 (p<0.001). Furthermore, the C-allele of rs3093077 was associated with higher CRP level in both early- (p=0.016) and late-onset (p<0.001) T2DM. CONCLUSION CRP gene variants may contribute to the risk of early-onset T2DM by affecting the serum CRP level.
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Affiliation(s)
- Yu-Chuen Huang
- School of Chinese Medicine, China Medical University, Taichung, Taiwan, R.O.C.,Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, R.O.C
| | - Ching-Chu Chen
- School of Chinese Medicine, China Medical University, Taichung, Taiwan, R.O.C.,Division of Endocrinology and Metabolism, Department of Medicine, China Medical University Hospital, Taichung, Taiwan, R.O.C
| | - Tzu-Yuan Wang
- Division of Endocrinology and Metabolism, Department of Medicine, China Medical University Hospital, Taichung, Taiwan, R.O.C
| | - Hung Tran The Nguyen
- International Master's Program of Biomedical Sciences, China Medical University, Taichung, Taiwan, R.O.C
| | - Yung-Hsiang Chen
- Graduate Institute of Integrated Medicine, China Medical University, Taichung, Taiwan, R.O.C
| | - Chia-Ming Wu
- Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, R.O.C
| | - Ya-Wen Chang
- Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, R.O.C
| | - Wen-Ling Liao
- Graduate Institute of Integrated Medicine, China Medical University, Taichung, Taiwan, R.O.C. .,Center for Personalized Medicine, China Medical University Hospital, Taichung, Taiwan, R.O.C
| | - Fuu-Jen Tsai
- Department of Medical Research, Medical Genetics and Pediatrics, China Medical University Hospital, Taichung, Taiwan, R.O.C. .,Department of Biotechnology and Bioinformatics, Asia University, Taichung, Taiwan, R.O.C
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4
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Liao WL, Chen YH, Chen CC, Huang YC, Lin HJ, Chen YT, Ban B, Wu CM, Chang YW, Hsieh AR, Tsai FJ. Effect of adiponectin level and genetic variation of its receptors on diabetic retinopathy: A case-control study. Medicine (Baltimore) 2019; 98:e14878. [PMID: 30882695 PMCID: PMC6426570 DOI: 10.1097/md.0000000000014878] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Adiponectin (APN) and its receptors have been reported to be associated with metabolic phenotypes. To better understand the effects of APN levels and its receptors on diabetic retinopathy (DR), we investigated the association of the plasma APN level and variations in APN-related genes with DR, individually and in combination.Patients with type 2 diabetes (T2D; N = 1604), above 20 years of age from the Taiwanese population participated in the study. Demographic information, blood pressure, and serological markers were recorded at enrollment. Genomic DNA was isolated and genotyped. The plasma APN levels were measured by enzyme-linked immunosorbent assay.T2D patients with DR (N = 632) had diabetes for a longer duration, and had higher HbA1c, and systolic and diastolic blood pressure compared to those without DR (N = 972) (P < .001, for all the parameters). Overall, 10 single nucleotide polymorphisms (SNPs) in ADIPOQ and CDH13 susceptibility loci were associated with DR. Gene risk score (GRS) was calculated based on 10 SNPs for each subject and the cumulative effect of genes was observed. Among the subjects with plasma APN level (N = 518), natural logarithm (LN) of APN (LN [APN]; odds ratio [OR] = 1.63, 95% confidence interval [CI] = 1.19-2.25) and GRS (OR = 1.90, 95% CI = 1.11-3.26 for middle range of GRS, and OR = 2.61, 95% CI = 1.48-4.59 for high range of GRS) were independent risk factors for DR after adjustment for other parameters.In conclusion, the plasma APN level and the genetic variations in adiponectin receptors were associated with DR.
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Affiliation(s)
- Wen-Ling Liao
- Graduate Institute of Integrated Medicine, China Medical University
- Center for Personalized Medicine, China Medical University Hospital
| | - Yung-Hsiang Chen
- Graduate Institute of Integrated Medicine, China Medical University
- Chinese Medicine Research Center, Research Center for Chinese Medicine & Acupuncture, China Medical University
- Department of Medical Research, China Medical University Hospital
- Department of Psychology, College of Medical and Health Science, Asia University
| | - Ching-Chu Chen
- School of Chinese Medicine, China Medical University
- Division of Endocrinology and Metabolism, Department of Medicine, China Medical University Hospital
| | - Yu-Chuen Huang
- School of Chinese Medicine, China Medical University
- Human Genetic Center, Department of Medical Research, China Medical University Hospital, China Medical University
| | - Hui-Ju Lin
- School of Chinese Medicine, China Medical University
- Department of Ophthalmology, China Medical University Hospital
| | - Yng-Tay Chen
- Graduate Institute of Food Safety, National Chung Hsing University, Taichung, Taiwan
| | - Bo Ban
- Department of Endocrinology, Affiliated Hospital of Jining Medical University
- Chinese Research Center for Behavior Medicine in Growth and Development, Jining, Shandong, China
| | - Chia-Ming Wu
- Human Genetic Center, Department of Medical Research, China Medical University Hospital, China Medical University
| | - Ya-Wen Chang
- Human Genetic Center, Department of Medical Research, China Medical University Hospital, China Medical University
| | - Ai-Ru Hsieh
- Graduate Institute of Biostatistics, Department of Public Health, China Medical University
| | - Fuu-Jen Tsai
- School of Chinese Medicine, China Medical University
- Human Genetic Center, Department of Medical Research, China Medical University Hospital, China Medical University
- Division of Pediatrics Genetics, China Medical University Children's Hospital, Taichung, Taiwan
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5
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Saha A, Wu CM, Peng R, Koodali R, Banerjee S. Facile Synthesis of 1,3,5-Triarylbenzenes and 4-Aryl-NH
-1,2,3-Triazoles Using Mesoporous Pd-MCM-41 as Reusable Catalyst. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801290] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Arijit Saha
- Department of Chemistry; Guru Ghasidas Vishwavidyalaya; 495009 Koni, Bilaspur C.G. India
| | - Chia-Ming Wu
- Department of Chemistry; University of South Dakota; 414E. Clark Street 57069 Vermillion SD USA
| | - Rui Peng
- Department of Chemistry; University of South Dakota; 414E. Clark Street 57069 Vermillion SD USA
| | - Ranjit Koodali
- Department of Chemistry; University of South Dakota; 414E. Clark Street 57069 Vermillion SD USA
| | - Subhash Banerjee
- Department of Chemistry; Guru Ghasidas Vishwavidyalaya; 495009 Koni, Bilaspur C.G. India
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6
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Liao WL, Chang CT, Chen CC, Lee WJ, Lin SY, Liao HY, Wu CM, Chang YW, Chen CJ, Tsai FJ. Urinary Proteomics for the Early Diagnosis of Diabetic Nephropathy in Taiwanese Patients. J Clin Med 2018; 7:jcm7120483. [PMID: 30486327 PMCID: PMC6306863 DOI: 10.3390/jcm7120483] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [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: 10/11/2018] [Revised: 11/16/2018] [Accepted: 11/22/2018] [Indexed: 12/28/2022] Open
Abstract
Diabetic nephropathy (DN) is a major complication in diabetic patients. Microalbuminuria testing is used to identify renal disease; however, its predictive value is questionable. We aimed to identify urinary biomarkers to early diagnosis nephropathy before identifiable alternations in kidney function or urine albumin excretion occurs. Proteomic approaches were used to identify potential urinary biomarkers and enzyme-linked immunosorbent assay was performed to verify the results. The data identified haptoglobin (HPT) and α-1-microglobulin/bikunin precursor (AMBP) as two biomarkers with the highest ability to distinguish between healthy individuals and patients with nephropathy, and between diabetic patients with and without DN. Further, the HPT-to-creatinine ratio (HCR) was evaluated as an independent predictor of early renal functional decline (ERFD) in a cohort with an average follow-up of 4.2 years. The area under the curve (AUC) value for ERFD prediction was significantly improved when the HCR biomarker was included in the model with albumin to creatinine ratio (ACR) and baseline characteristics (AUC values were 0.803 and 0.759 for HCR and ACR, respectively; p value was 0.0423 for difference between models). In conclusion, our results suggest that HCR represents an early indicator of nephropathy, and a marker related to ERFD among diabetic patients in Taiwan.
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Affiliation(s)
- Wen-Ling Liao
- Graduate Institute of Integrated Medicine, China Medical University, Taichung 404, Taiwan.
- Center for Personalized Medicine, China Medical University Hospital, Taichung 404, Taiwan.
| | - Chiz-Tzung Chang
- Division of Nephrology and Kidney Institute, Department of Internal Medicine, China Medical University Hospital, Taichung 404, Taiwan.
- Institute of Clinical Medical Science, China Medical University College of Medicine, Taichung 404, Taiwan.
| | - Ching-Chu Chen
- Division of Endocrinology and Metabolism, Department of Medicine, China Medical University Hospital, Taichung 404, Taiwan.
- School of Chinese Medicine, China Medical University, Taichung 404, Taiwan.
| | - Wen-Jane Lee
- Department of Medical Research, Taichung Veterans General Hospital, Taichung 404 Taiwan.
- Department of Social Work, Tunghai University, Taichung 404, Taiwan.
| | - Shih-Yi Lin
- Division of Nephrology and Kidney Institute, Department of Internal Medicine, China Medical University Hospital, Taichung 404, Taiwan.
- Institute of Clinical Medical Science, China Medical University College of Medicine, Taichung 404, Taiwan.
| | - Hsin-Yi Liao
- Proteomics Core Laboratory, Department of Medical Research, China Medical University Hospital, Taichung 404, Taiwan.
| | - Chia-Ming Wu
- Human Genetic Center, Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 404, Taiwan.
| | - Ya-Wen Chang
- Human Genetic Center, Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 404, Taiwan.
| | - Chao-Jung Chen
- Graduate Institute of Integrated Medicine, China Medical University, Taichung 404, Taiwan.
- Proteomics Core Laboratory, Department of Medical Research, China Medical University Hospital, Taichung 404, Taiwan.
| | - Fuu-Jen Tsai
- School of Chinese Medicine, China Medical University, Taichung 404, Taiwan.
- Human Genetic Center, Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 404, Taiwan.
- Department of Health and Nutrition Biotechnology, Asia University, Taichung 404, Taiwan.
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7
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Wu CM, Shen JZ. [Antimicrobial resistance of animal-borne bacteria: progresses, challenges and strategies]. Zhonghua Yu Fang Yi Xue Za Zhi 2018; 52:340-343. [PMID: 29614597 DOI: 10.3760/cma.j.issn.0253-9624.2018.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- C M Wu
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
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8
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Zhang L, Li YR, Zhou LQ, Wu CM. Comparison study on the calculation formula of evaporation mass flux through the plane vapour-liquid interface. ACTA ACUST UNITED AC 2017. [DOI: 10.1088/1742-6596/925/1/012019] [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: 11/12/2022]
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9
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Vinzant N, Scholl JL, Wu CM, Kindle T, Koodali R, Forster GL. Iron Oxide Nanoparticle Delivery of Peptides to the Brain: Reversal of Anxiety during Drug Withdrawal. Front Neurosci 2017; 11:608. [PMID: 29163012 PMCID: PMC5672019 DOI: 10.3389/fnins.2017.00608] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [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: 08/27/2017] [Accepted: 10/18/2017] [Indexed: 01/19/2023] Open
Abstract
Targeting neuropeptide systems is important for future advancements in treatment of neurological and psychiatric illnesses. However, many of the peptides and their analogs do not cross the blood-brain barrier (BBB) efficiently. Nanoparticles such as iron oxide can cross the BBB, and here we describe a novel method for the conjugation of a peptide antisauvagine-30 (ASV-30) to iron oxide nanoparticles. Previous research has shown that direct infusion of ASV-30 into the brain reduces anxiety-like behavior in animal models via actions on corticotropin releasing factor type 2 (CRF2) receptors. Therefore, we tested whether iron oxide+ASV-30 complexes cross the BBB of rats and then determined whether iron oxide+ASV-30 nanoparticles are localized with CRF2-expressing neurons. Finally we tested the hypothesis that systemic infusion of iron oxide+ASV-30 can reduce anxiety-like behavior. First we describe the synthesis and demonstrate the stability of iron oxide-peptide nanoparticle complexes. Next, nanoparticles (87.7 μg/kg Fe2O3) with or without ASV-30 (200 μg/kg, ip) were injected into male rats 30 min prior to transcardial perfusion and brain fixation for immunohistochemical analysis, or before testing on the elevated plus maze (EPM) in an amphetamine withdrawal model of anxiety. Systemically administered iron oxide+ASV-30 particles were present in the brain and associated with neurons, including those that express CRF2 receptors, but did not localize with the iron storage protein ferritin. Furthermore, systemic administration of ironoxide+ASV-30 reduced amphetamine withdrawal-induced anxiety without affecting locomotion, suggesting that the anxiolytic effects of ASV-30 were preserved and the bioavailability of ASV-30 was sufficient. The findings demonstrate a novel approach to peptide delivery across the BBB and provide insight as to the neural distribution and efficacy of this nanotechnology.
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Affiliation(s)
- Nathan Vinzant
- Division of Basic Biomedical Sciences, Center for Brain and Behavior Research, Sanford School of Medicine, University of South Dakota, Vermillion, SD, United States
| | - Jamie L Scholl
- Division of Basic Biomedical Sciences, Center for Brain and Behavior Research, Sanford School of Medicine, University of South Dakota, Vermillion, SD, United States
| | - Chia-Ming Wu
- Department of Chemistry, University of South Dakota, Vermillion, SD, United States
| | - Trevor Kindle
- Department of Chemistry, University of South Dakota, Vermillion, SD, United States
| | - Ranjit Koodali
- Department of Chemistry, University of South Dakota, Vermillion, SD, United States
| | - Gina L Forster
- Division of Basic Biomedical Sciences, Center for Brain and Behavior Research, Sanford School of Medicine, University of South Dakota, Vermillion, SD, United States
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10
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Wu CC, Hsu CJ, Huang FL, Lin YH, Lin YH, Liu TC, Wu CM. Timing of cochlear implantation in auditory neuropathy patients with OTOF mutations: Our experience with 10 patients. Clin Otolaryngol 2017; 43:352-357. [PMID: 28766844 DOI: 10.1111/coa.12949] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/19/2017] [Indexed: 11/27/2022]
Affiliation(s)
- C C Wu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - C J Hsu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan.,Department of Otolaryngology, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung, Taiwan
| | - F L Huang
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - Y H Lin
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan.,Graduate Institute of Molecular Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Y H Lin
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan.,Graduate Institute of Medical Genomics and Proteomics, National Taiwan University College of Medicine, Taipei, Taiwan
| | - T C Liu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - C M Wu
- Department of Otolaryngology, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan
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11
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Lin YJ, Liao WL, Wang CH, Tsai LP, Tang CH, Chen CH, Wu JY, Liang WM, Hsieh AR, Cheng CF, Chen JH, Chien WK, Lin TH, Wu CM, Liao CC, Huang SM, Tsai FJ. Association of human height-related genetic variants with familial short stature in Han Chinese in Taiwan. Sci Rep 2017; 7:6372. [PMID: 28744006 PMCID: PMC5527114 DOI: 10.1038/s41598-017-06766-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 06/19/2017] [Indexed: 12/19/2022] Open
Abstract
Human height can be described as a classical and inherited trait model. Genome-wide association studies (GWAS) have revealed susceptible loci and provided insights into the polygenic nature of human height. Familial short stature (FSS) represents a suitable trait for investigating short stature genetics because disease associations with short stature have been ruled out in this case. In addition, FSS is caused only by genetically inherited factors. In this study, we explored the correlations of FSS risk with the genetic loci associated with human height in previous GWAS, alone and cumulatively. We systematically evaluated 34 known human height single nucleotide polymorphisms (SNPs) in relation to FSS in the additive model (p < 0.00005). A cumulative effect was observed: the odds ratios gradually increased with increasing genetic risk score quartiles (p < 0.001; Cochran-Armitage trend test). Six affected genes-ZBTB38, ZNF638, LCORL, CABLES1, CDK10, and TSEN15-are located in the nucleus and have been implicated in embryonic, organismal, and tissue development. In conclusion, our study suggests that 13 human height GWAS-identified SNPs are associated with FSS risk both alone and cumulatively.
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Affiliation(s)
- Ying-Ju Lin
- Genetic Center, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan.,School of Chinese Medicine, China Medical University, Taichung, Taiwan
| | - Wen-Ling Liao
- Graduate Institute of Integrated Medicine, China Medical University, Taichung, Taiwan.,Center for Personalized Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Chung-Hsing Wang
- Children's Hospital of China Medical University, Taichung, Taiwan
| | - Li-Ping Tsai
- Department of Pediatrics, Buddhist Tzu Chi General Hospital, Taipei Branch, Taipei, Taiwan
| | - Chih-Hsin Tang
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
| | - Chien-Hsiun Chen
- School of Chinese Medicine, China Medical University, Taichung, Taiwan.,Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Jer-Yuarn Wu
- School of Chinese Medicine, China Medical University, Taichung, Taiwan.,Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Wen-Miin Liang
- Graduate Institute of Biostatistics, School of Public Health, China Medical University, Taichung, Taiwan
| | - Ai-Ru Hsieh
- Graduate Institute of Biostatistics, School of Public Health, China Medical University, Taichung, Taiwan
| | - Chi-Fung Cheng
- Graduate Institute of Biostatistics, School of Public Health, China Medical University, Taichung, Taiwan
| | - Jin-Hua Chen
- Biostatistics Center and School of Public Health, Taipei Medical University, Taipei, Taiwan
| | - Wen-Kuei Chien
- National Applied Research Laboratories, National Center for High-performance Computing, Hsinchu, Taiwan
| | - Ting-Hsu Lin
- Genetic Center, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Chia-Ming Wu
- Genetic Center, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Chiu-Chu Liao
- Genetic Center, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Shao-Mei Huang
- Genetic Center, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Fuu-Jen Tsai
- Genetic Center, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan. .,School of Chinese Medicine, China Medical University, Taichung, Taiwan. .,Children's Hospital of China Medical University, Taichung, Taiwan. .,Department of Biotechnology and Bioinformatics, Asia University, Taichung, Taiwan.
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12
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Yao B, Kolla P, Koodali R, Wu CM, Smirnova A. Mechanism of Alkaline Lignin Oxidation Using Laccase-methyl Syringate Mediator System. ACTA ACUST UNITED AC 2016. [DOI: 10.5539/ijc.v8n2p56] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
<p>The mechanism of alkaline lignin oxidation in presence of laccase-methyl syringate (MS) mediator is discussed in terms of morphological changes that take place during exposure of the lignin to the phosphate buffer solution (pH=6.5) for 72hr at 70<sup>o</sup>C. The SEM analysis of lignin before and after enzymatic treatment reveals the morphological changes explained by the interaction of the lignin surface groups with laccase-methyl syringate system. The BET analysis confirms that this interaction causes the change in the surface area from 2.75 to 5.50cm<sup>2</sup>/g. The corresponding pore-size distribution in lignin sample treated with laccase-methyl syringate is much broader in comparison to the untreated lignin and the pores within 25-150nm range are detected as a result of the BJH analysis. The electrochemical study of lignin, lignin with laccase, and lignin with laccase in presence of the mediator in the buffer solution has been performed in the potential range from -0.3 to +1.0V vs. Ag, AgCl, Cl<sup>-</sup> reference electrode. The cyclic voltammetry confirms reversible oxidation-reduction behavior of the methyl syringate natural mediator in anaerobic and aerobic environment. Specifically in anaerobic conditions three oxidation anodic peaks (0.265V, 0.474V and 0.884V) and two reduction peaks (0.421V and 0.103V) were detected out of which the oxidation peak at 0.474V was assigned to the formation of MS∙ radical. In aerobic conditions the methyl syringate demonstrates two oxidation peaks (0.473V and 0.812V) and two reduction peaks (0.410V and 0.135V). The mechanism of MS radical stability in oxygen vs. anaerobic environment is proposed based on formation of MS∙ radicals.</p>
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13
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Sharma S, Wu CM, Koodali RT, Rajesh N. An ionic liquid-mesoporous silica blend as a novel adsorbent for the adsorption and recovery of palladium ions, and its applications in continuous flow study and as an industrial catalyst. RSC Adv 2016. [DOI: 10.1039/c5ra26673d] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aliquat-336@SBA-15 blend adsorbent effectively adsorbs Pd from a spent catalyst.
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Affiliation(s)
- Shivani Sharma
- Department of Chemistry
- Birla Institute of Technology and Science
- Hyderabad 500 078
- India
| | - Chia-Ming Wu
- Department of Chemistry
- University of South Dakota
- Vermillion
- 57069 USA
| | - Ranjit T. Koodali
- Department of Chemistry
- University of South Dakota
- Vermillion
- 57069 USA
| | - N. Rajesh
- Department of Chemistry
- Birla Institute of Technology and Science
- Hyderabad 500 078
- India
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14
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Payra S, Saha A, Wu CM, Selvaratnam B, Dramstad T, Mahoney L, Verma SK, Thareja S, Koodali R, Banerjee S. Fe–SBA-15 catalyzed synthesis of 2-alkoxyimidazo[1,2-a]pyridines and screening of their in silico selectivity and binding affinity to biological targets. NEW J CHEM 2016. [DOI: 10.1039/c6nj02134d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Regioselective synthesis of 2-alkoxyimidazopyridines by Fe-SBA-15 and screening of their in silico binding affinity to biological targets.
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Affiliation(s)
- Soumen Payra
- Department of Chemistry
- Guru Ghasidas Vishwavidyalaya (A Central University)
- Bilaspur-495009
- India
| | - Arijit Saha
- Department of Chemistry
- Guru Ghasidas Vishwavidyalaya (A Central University)
- Bilaspur-495009
- India
| | - Chia-Ming Wu
- Department of Chemistry
- University of South Dakota
- Vermillion
- USA
| | | | - Thorn Dramstad
- Department of Chemistry
- University of South Dakota
- Vermillion
- USA
| | - Luther Mahoney
- Department of Chemistry
- University of South Dakota
- Vermillion
- USA
| | - Sant Kumar Verma
- School of Pharmaceutical Sciences
- Guru Ghasidas Vishwavidyalaya (A Central University)
- Bilaspur-495009
- India
| | - Suresh Thareja
- School of Pharmaceutical Sciences
- Guru Ghasidas Vishwavidyalaya (A Central University)
- Bilaspur-495009
- India
| | - Ranjit Koodali
- Department of Chemistry
- University of South Dakota
- Vermillion
- USA
| | - Subhash Banerjee
- Department of Chemistry
- Guru Ghasidas Vishwavidyalaya (A Central University)
- Bilaspur-495009
- India
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15
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Peng R, Shrestha K, Mishra G, Baltrusaitis J, Wu CM, Koodali RT. Efficient photocatalytic hydrogen evolution system by assembling earth abundant NixOy nanoclusters in cubic MCM-48 mesoporous materials. RSC Adv 2016. [DOI: 10.1039/c6ra09126a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A MCM-48 mesoporous support containing NiO and Ni2O3 nanoclusters exhibit high activity for photocatalytic hydrogen production in comparison to NiO.
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Affiliation(s)
- Rui Peng
- Department of Chemistry
- University of South Dakota
- Vermillion
- USA
| | - Khadga Shrestha
- Department of Chemistry
- University of South Dakota
- Vermillion
- USA
| | | | | | - Chia-Ming Wu
- Department of Chemistry
- University of South Dakota
- Vermillion
- USA
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16
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Mahoney L, Rasalingam S, Wu CM, Koodali RT. Nanocasting of Periodic Mesoporous Materials as an Effective Strategy to Prepare Mixed Phases of Titania. Molecules 2015; 20:21881-95. [PMID: 26670222 PMCID: PMC6331994 DOI: 10.3390/molecules201219812] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [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] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 12/01/2015] [Accepted: 12/03/2015] [Indexed: 11/16/2022] Open
Abstract
Mesoporous titanium dioxide materials were prepared using a nanocasting technique involving silica SBA-15 as the hard-template. At an optimal loading of titanium precursor, the hexagonal periodic array of pores in SBA-15 was retained. The phases of titanium dioxide could be easily varied by the number of impregnation cycles and the nature of titanium alkoxide employed. Low number of impregnation cycles produced mixed phases of anatase and TiO2(B). The mesoporous TiO2 materials were tested for solar hydrogen production, and the material consisting of 98% anatase and 2% TiO2(B) exhibited the highest yield of hydrogen from the photocatalytic splitting of water. The periodicity of the pores was an important factor that influenced the photocatalytic activity. This study indicates that mixed phases of titania containing ordered array of pores can be prepared by using the nanocasting strategy.
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Affiliation(s)
- Luther Mahoney
- Department of Chemistry, University of South Dakota, 414 E. Clark Street, Vermillion, 57069 SD, USA.
| | - Shivatharsiny Rasalingam
- Department of Chemistry, University of South Dakota, 414 E. Clark Street, Vermillion, 57069 SD, USA.
| | - Chia-Ming Wu
- Department of Chemistry, University of South Dakota, 414 E. Clark Street, Vermillion, 57069 SD, USA.
| | - Ranjit T Koodali
- Department of Chemistry, University of South Dakota, 414 E. Clark Street, Vermillion, 57069 SD, USA.
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17
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Rasalingam S, Peng R, Wu CM, Mariappan K, Koodali RT. Robust and effective Ru-bipyridyl dye sensitized Ti-MCM-48 cubic mesoporous materials for photocatalytic hydrogen evolution under visible light illumination. CATAL COMMUN 2015. [DOI: 10.1016/j.catcom.2015.02.019] [Citation(s) in RCA: 8] [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: 10/24/2022] Open
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18
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Fang GC, Chiang HC, Chen YC, Xiao YF, Wu CM, Kuo YC. A measurement of summertime dry deposition of ambient air particulates and associated metallic pollutants in Central Taiwan. Environ Geochem Health 2015; 37:233-249. [PMID: 25185928 DOI: 10.1007/s10653-014-9642-3] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Accepted: 08/12/2014] [Indexed: 06/03/2023]
Abstract
The purpose of this study is to characterize metallic elements associated with atmospheric particulate matter in the dry deposition plate, total suspended particulate, fine particles, and coarse particles at Taichung Harbor and Gong Ming Junior High School (airport) in central Taiwan at a sampling site from June 2013 to August 2013. The results indicated that: (1) the average concentrations of the metallic elements Cr and Cd were highest at the Gong Ming Junior High School (airport), and the average concentrations of the metallic elements Ni, Cu, and Pb were highest at the Taichung Harbor sampling site. (2) The high smelting industry density and export/import rate of heavily loaded cargos were the main reasons leading to these findings. (3) The average metallic element dry deposition and metallic element PM(2.5-10) all followed the order of Pb > Cr > Cu > Ni > Cd at the two sampling sites. However, the average metallic elements Cu and Pb were found to have the highest dry deposition velocities and concentrations in PM(2.5) for the two sampling sites in this study. (4) The correlation coefficients of ambient air particle dry deposition and concentration with wind speed at the airport were higher than those from the harbor sampling site. The wind and broad open spaces at Taichung Airport were the possible reasons for the increasing correlation coefficients for ambient air particle concentration and dry deposition with wind speed at the Taichung Airport sampling site.
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Affiliation(s)
- Guor-Cheng Fang
- Air Toxic and Environmental Analysis Laboratory, Department of Safety, Health and Environmental Engineering, Hungkuang University, Sha-Lu, Taichung, 433, Taiwan,
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19
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Payra S, Saha A, Peng R, Wu CM, Koodali RT, Banerjee S. Expeditious one-pot three component synthesis of N-aryl dithiocarbamate derivatives using mesoporous Cu-materials. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.01.158] [Citation(s) in RCA: 5] [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: 11/26/2022]
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20
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Rasalingam S, Wu CM, Koodali RT. Modulation of pore sizes of titanium dioxide photocatalysts by a facile template free hydrothermal synthesis method: implications for photocatalytic degradation of rhodamine B. ACS Appl Mater Interfaces 2015; 7:4368-4380. [PMID: 25633643 DOI: 10.1021/am508883f] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Mesoporous TiO2 photocatalysts were prepared in ethanol media by using relatively green, template free sol-gel technique. A mild hydrothermal treatment procedure was employed to tune the pore sizes of the materials. Comprehensive techniques that include powder X-ray diffraction, diffuse reflectance spectroscopy, specific surface area analysis, electron microscopy, FT-IR, TGA, and ζ-potential measurements were used to characterize the titania materials. Porosity (pore size and pore volume) of the materials were found to be key factors for the variation in the rate of photocatalytic degradation of rhodamine B; in addition to specific surface area, and surface hydroxyl groups. An increase in porosity permits effective transport of the dye molecules resulting in an increase in the rate of the degradation in materials having larger pores. A detailed electrospray ionization-mass spectrometric (ESI-MS) study was carried out for selected materials to identify photodegraded intermediates and products formed during the degradation of rhodamine B. In addition, experiments were also carried out to understand the role of reactive oxygen species (ROS). In summary, this work provides a simple way to tune pore sizes without the use of any template and an insight into the influence of pore size for the photocatalytic degradation of rhodamine B.
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Affiliation(s)
- Shivatharsiny Rasalingam
- Department of Chemistry, University of South Dakota , Vermillion, South Dakota 57069, United States
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21
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Borcherding J, Baltrusaitis J, Chen H, Stebounova L, Wu CM, Rubasinghege G, Mudunkotuwa IA, Caraballo JC, Zabner J, Grassian VH, Comellas AP. Iron oxide nanoparticles induce Pseudomonas aeruginosa growth, induce biofilm formation, and inhibit antimicrobial peptide function. Environ Sci Nano 2014; 1:123-132. [PMID: 25221673 PMCID: PMC4158920 DOI: 10.1039/c3en00029j] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Given the increased use of iron-containing nanoparticles in a number of applications, it is important to understand any effects that iron-containing nanoparticles can have on the environment and human health. Since iron concentrations are extremely low in body fluids, there is potential that iron-containing nanoparticles may influence the ability of bacteria to scavenge iron for growth, affect virulence and inhibit antimicrobial peptide (AMP) function. In this study, Pseudomonas aeruginosa (PA01) and AMPs were exposed to iron oxide nanoparticles, hematite (α-Fe2O3), of different sizes ranging from 2 to 540 nm (2 ± 1, 43 ± 6, 85 ± 25 and 540 ± 90 nm) in diameter. Here we show that the greatest effect on bacterial growth, biofilm formation, and AMP function impairment is found when exposed to the smallest particles. These results are attributed in large part to enhanced dissolution observed for the smallest particles and an increase in the amount of bioavailable iron. Furthermore, AMP function can be additionally impaired by adsorption onto nanoparticle surfaces. In particular, lysozyme readily adsorbs onto the nanoparticle surface which can lead to loss of peptide activity. Thus, this current study shows that co-exposure of nanoparticles and known pathogens can impact host innate immunity. Therefore, it is important that future studies be designed to further understand these types of impacts.
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Affiliation(s)
| | | | - Haihan Chen
- Department of Chemistry, University of Iowa, Iowa City, IA 52242, USA
| | | | - Chia-Ming Wu
- Department of Chemistry, University of Iowa, Iowa City, IA 52242, USA
| | | | | | | | - Joseph Zabner
- Department of Internal Medicine, University of Iowa, Iowa City, IA 52242, USA
| | - Vicki H. Grassian
- Department of Chemistry, University of Iowa, Iowa City, IA 52242, USA
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22
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Wu CM, Chen WJ, Zheng Y, Ma DC, Wang B, Liu JY, Woo CH. Controllability of vortex domain structure in ferroelectric nanodot: fruitful domain patterns and transformation paths. Sci Rep 2014; 4:3946. [PMID: 24492764 PMCID: PMC3912473 DOI: 10.1038/srep03946] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [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] [Received: 09/19/2013] [Accepted: 01/15/2014] [Indexed: 11/09/2022] Open
Abstract
Ferroelectric vortex domain structure which exists in low-dimensional ferroelectrics is being intensively researched for future applications in functional nanodevices. Here we demonstrate that adjusting surface charge screening in combination with temperature can provide an efficient way to gain control of vortex domain structure in ferroelectric nanodot. Systematical simulating experiments have been conducted to reveal the stability and evolution mechanisms of domain structure in ferroelectric nanodot under various conditions, including processes of cooling-down/heating-up under different surface charge screening conditions, and increasing/decreasing surface charge screening at different temperatures. Fruitful phase diagrams as functions of surface screening and temperature are presented, together with evolution paths of various domain patterns. Calculations discover up to 25 different kinds of domain patterns and 22 typical evolution paths of phase transitions. The fruitful controllability of vortex domain structure by surface charge screening in combination with temperature should shed light on prospective nanodevice applications of low-dimensional ferroelectric nanostructures.
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Affiliation(s)
- C M Wu
- State Key Laboratory of Optoelectronic Materials and Technologies, Micro&Nano Physics and Mechanics Research Laboratory, School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - W J Chen
- State Key Laboratory of Optoelectronic Materials and Technologies, Micro&Nano Physics and Mechanics Research Laboratory, School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Yue Zheng
- 1] State Key Laboratory of Optoelectronic Materials and Technologies, Micro&Nano Physics and Mechanics Research Laboratory, School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275, China [2] Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, China
| | - D C Ma
- Sino-French Institute of Nuclear Engineering and Technology, Zhuhai Campus, Sun Yat-sen University, Zhuhai 519082, China
| | - B Wang
- State Key Laboratory of Optoelectronic Materials and Technologies, Micro&Nano Physics and Mechanics Research Laboratory, School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - J Y Liu
- State Key Laboratory of Optoelectronic Materials and Technologies, Micro&Nano Physics and Mechanics Research Laboratory, School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - C H Woo
- Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, China
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23
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Peng R, Lin C, Baltrusaitis J, Wu CM, Dimitrijevic NM, Rajh T, May S, Koodali RT. Insight into band positions and inter-particle electron transfer dynamics between CdS nanoclusters and spatially isolated TiO2dispersed in cubic MCM-48 mesoporous materials: a highly efficient system for photocatalytic hydrogen evolution under visible light illumination. Phys Chem Chem Phys 2014; 16:2048-61. [DOI: 10.1039/c3cp52801d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Chung MH, Kuo EY, Wu CM, Chen KT, Lin HJ. Cerebral “eThrombosis”: Cerebral Venous Sinus Thrombosis Associated with Prolonged Sitting in Front of a Computer. HONG KONG J EMERG ME 2013. [DOI: 10.1177/102490791302000207] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Venous thromboembolism caused by prolonged sitting during air travel has been recognised as economy-class syndrome for more than 30 years. Since 2003, the term “eThrombosis” has been proposed to describe the 21st Century variant of venous thromboembolism associated with immobilisation. We reported a case of cerebral venous sinus thrombosis presenting with severe headache after a prolonged period of sitting for over 12 hours in front of a computer for recreational purpose. We described this case as cerebral “eThrombosis”. Considering the widespread use of computers for many purposes including working, recreation and communications in the present digital era, we would like to put forward that prolonged immobilisation associated with computer use is a possible provoking risk factor of cerebral venous sinus thrombosis.
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Affiliation(s)
| | | | | | - KT Chen
- Taipei Medical University, Department of Emergency Medicine, Taipei, Taiwan
| | - HJ Lin
- Southern Tainan University of Technology, Department of Biotechnology, Tainan, Taiwan
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25
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Wu CM, Rathi M, Ahrenkiel SP, Koodali RT, Wang Z. Facile synthesis of MOF-5 confined in SBA-15 hybrid material with enhanced hydrostability. Chem Commun (Camb) 2013; 49:1223-5. [PMID: 23282532 DOI: 10.1039/c2cc38366g] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A MOF-5 [Zn(4)O(BDC)(3); BDC = 1,4-benzenedicarboxylate]@SBA-15 hybrid material has been prepared by using SBA-15 as a matrix. This hybrid material exhibits improved hydrostability under ambient conditions and unique gas adsorption behavior compared with pristine MOF-5.
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Affiliation(s)
- Chia-Ming Wu
- Department of Chemistry, University of South Dakota, Vermillion, SD 57069, USA
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26
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Rasalingam S, Kibombo HS, Wu CM, Budhi S, Peng R, Baltrusaitis J, Koodali RT. Influence of Ti–O–Si hetero-linkages in the photocatalytic degradation of Rhodamine B. CATAL COMMUN 2013. [DOI: 10.1016/j.catcom.2012.11.016] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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27
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Peng R, Wu CM, Baltrusaitis J, Dimitrijevic NM, Rajh T, Koodali RT. Ultra-stable CdS incorporated Ti-MCM-48 mesoporous materials for efficient photocatalytic decomposition of water under visible light illumination. Chem Commun (Camb) 2013; 49:3221-3. [DOI: 10.1039/c3cc41362d] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Mudunkotuwa IA, Rupasinghe T, Wu CM, Grassian VH. Dissolution of ZnO nanoparticles at circumneutral pH: a study of size effects in the presence and absence of citric acid. Langmuir 2012; 28:396-403. [PMID: 22122742 DOI: 10.1021/la203542x] [Citation(s) in RCA: 201] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Understanding size-dependent processes, including dissolution, of engineered nanoparticles is essential in addressing the potential environmental and health impacts of these materials as well as their long-term stability. In this study, experimental measurements of size-dependent dissolution of well-characterized zinc oxide (ZnO) nanoparticles with particle diameters in the range of 4 to 130 nm have been measured at circumneutral pH (pH 7.5) and compared. Dissolution was found to be enhanced with smaller ZnO nanoparticles compared to larger-sized particles, even though the nanoparticles were present in solution as aggregates with hydrodynamic diameters on the order of 1-3 μm in size. The presence of citric acid significantly enhanced the extent of ZnO dissolution for all sizes, and the greatest enhancement was observed for the 4 nm particles. Although these results are found to be in qualitative agreement with theoretical predictions, a linearized form of the Kelvin equation to calculate a surface free energy yielded quantities inconsistent with expected values from the literature. Reasons for this inconsistency are discussed and include potential deviations of solubility behavior from classical thermodynamics as a result of a lack of detailed knowledge of surface structure and surface properties, including the presence of different surface crystal facets, and the aggregation state.
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Affiliation(s)
- Imali A Mudunkotuwa
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
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29
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Peng R, Zhao D, Baltrusaitis J, Wu CM, Koodali RT. Visible light driven photocatalytic evolution of hydrogen from water over CdS encapsulated MCM-48 materials. RSC Adv 2012. [DOI: 10.1039/c2ra20714a] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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30
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Hou LH, Wu CM, Huang HH, Chu HA. Effects of ammonia on the structure of the oxygen-evolving complex in photosystem II as revealed by light-induced FTIR difference spectroscopy. Biochemistry 2011; 50:9248-54. [PMID: 21942297 DOI: 10.1021/bi200943q] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
NH(3) is a structural analogue of substrate H(2)O and an inhibitor to the water oxidation reaction in photosystem II. To test whether or not NH(3) is able to replace substrate water molecules on the oxygen-evolving complex in photosystem II, we studied the effects of NH(3) on the high-frequency region (3750-3550 cm(-1)) of the S(2)Q(A)(-)/S(1)Q(A) FTIR difference spectra (pH 7.5 at 250 K), where OH stretch modes of weak hydrogen-bonded active water molecules occur. Our results showed that NH(3) did not replace the active water molecule on the oxygen-evolving complex that gave rise to the S(1) mode at ~3586 cm(-1) and the S(2) mode at ~3613 cm(-1) in the S(2)Q(A)(-)/S(1)Q(A) FTIR difference spectrum of PSII. In addition, our mid-frequency FTIR results showed a clear difference between pH 6.5 and 7.5 on the concentration dependence of the NH(4)Cl-induced upshift of the S(2) state carboxylate mode at 1365 cm(-1) in the S(2)Q(A)(-)/S(1)Q(A) spectra of NH(4)Cl-treated PSII samples. Our results provided strong evidence that NH(3) induced this upshift in the spectra of NH(4)Cl-treated PSII samples at 250 K. Moreover, our low-frequency FTIR results showed that the Mn-O-Mn cluster vibrational mode at 606 cm(-1) in the S(2)Q(A)(-)/S(1)Q(A) spectrum of the NaCl control PSII sample was diminished in those samples treated with NH(4)Cl. Our results suggest that NH(3) induced a significant alteration on the core structure of the Mn(4)CaO(5) cluster in PSII. The implication of our findings on the structure of the NH(3)-binding site on the OEC in PSII will be discussed.
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Affiliation(s)
- Li-Hsiu Hou
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei 11529, Taiwan
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31
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Wu CM, Zhang HB, Zhou Q, Wan L, Jin J, Ni L, Pan YJ, Wu XY, Ruan LY. Two novel DAX1 gene mutations in Chinese patients with X-linked adrenal hypoplasia congenita: clinical, hormonal and genetic analysis. J Endocrinol Invest 2011; 34:e235-9. [PMID: 21270512 DOI: 10.3275/7484] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [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: 11/17/2022]
Abstract
Mutations in the DAX1 gene result in X-linked congenital adrenal hypoplasia (AHC). Affected boys usually present with primary adrenal failure in early infancy or childhood and hypogonadotropic hypogonadism (HH) at puberty. This paper describes the clinical, hormonal, radiological, and genetic characteristics of 2 Chinese patients with X-linked AHC. Primary adrenal insufficiency occurred in the 2 patients during their childhood and HH was recognized at puberty. Genomic DNA was extracted from their peripheral blood leukocytes and coding sequence abnormalities of the DAX1 gene were assessed by PCR and direct sequencing analysis. Genetic analysis of the DAX1 gene revealed 2 novel mutations c.572-575 dupGGGC, p.Thr193Gly,fs,205X and c.773- 774 dupCC, p.Ser259Pro,fs,264X in exon 1, causing frameshifts and yeilding premature stop codons at 205 and 264, respectively. This study identifies 2 novel mutations in the DAX1 gene which can further expand the mutation database and benefit patients in the diagnosis and treatment of AHC.
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Affiliation(s)
- C M Wu
- Department of Endocrinology, The Second Affiliated Hospital of Wenzhou Medical College, Wenzhou 325027, Zhejiang, China.
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Wu CM, Song SF, Chi KM. Size-, and shape-selective synthesis of platinum nanoparticles from Pt(beta-diketonate)2 complexes in organic media. J Nanosci Nanotechnol 2010; 10:5715-5722. [PMID: 21133096 DOI: 10.1166/jnn.2010.2451] [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] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Preparation of platinum nanoparticles from two beta-diketonate complexes of platinum, Pt(hfac)2 and Pt(acac)2 (hfac: hexafluoroacetylacetonate, acac: acetylacetonate) in organic media will be presented in the contribution. Nearly spherical, well-dispersed platinum nanoparticles were fabricated by thermally-induced reduction of Pt(hfac)2 in the presence of teraalkylammonium salts as the stabilizing agents in several organic solvents. Particle sizes ranging from 9 to 15 nm can be controlled by variation of the surfactant, the concentrations of precursor and surfactant, as well as reaction temperature. Heating the solution of Pt(acac)2 complex in 1-octanol at appropriate temperatures provided the platinum nanocubes and the influence of reaction temperature on the particle shape was investigated.
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Affiliation(s)
- Chia-Ming Wu
- Department of Chemistry and Biochemistry, National Chung Cheng University, Min-Hsiung, Chia-Yi, 621, Taiwan
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Chiu YF, Lin WC, Wu CM, Chen YH, Hung CH, Ke SC, Chu HA. Identification and characterization of a cytochrome b559 Synechocystis 6803 mutant spontaneously generated from DCMU-inhibited photoheterotrophical growth conditions. Biochim Biophys Acta 2009; 1787:1179-88. [PMID: 19464256 DOI: 10.1016/j.bbabio.2009.05.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2008] [Revised: 05/12/2009] [Accepted: 05/14/2009] [Indexed: 11/29/2022]
Abstract
We identified a spontaneously generated mutant from Synechocystis sp. PCC6803 wild-type cells grown in BG-11 agar plates containing 5 mM Glu and 10 microM DCMU. This mutant carries an R7L mutation on the alpha-subunit of cyt b559 in photosystem II (PSII). In the recent 2.9 A PSII crystal structural model, the side chain of this arginine residue is in close contact with the heme propionates of cyt b559. We called this mutant WR7Lalpha cyt b559. This mutant grew at about the same rate as wild-type cells under photoautotrophical conditions but grew faster than wild-type cells under photoheterotrophical conditions. In addition, 77 K fluorescence and 295 K chlorophyll a fluorescence spectral results indicated that the energy delivery from phycobilisomes to PSII reaction centers was partially inhibited or uncoupled in this mutant. Moreover, WR7Lalpha cyt b559 mutant cells were more susceptible to photoinhibition than wild-type cells under high light conditions. Furthermore, our EPR results indicated that in a significant fraction of mutant reaction centers, the R7Lalpha cyt b559 mutation induced the displacement of one of the axial histidine ligands to the heme of cyt b559. On the basis of these results, we propose that the Arg7Leu mutation on the alpha-subunit of cyt b559 alters the interaction between the APC core complex and PSII reaction centers, which reduces energy delivery from the antenna to the reaction center and thus protects mutant cells from DCMU-induced photo-oxidative stress.
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Affiliation(s)
- Yi-Fang Chiu
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan
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Liu LB, Wu CM, Wen J, Chen JL, Zheng MQ, Zhao GP. Association of SNPs in exon 2 of the MHC B-F gene with immune traits in two distinct chicken populations: Chinese Beijing-You and White Leghorn. ACTA AGR SCAND A-AN 2009; 59:4-11. [PMID: 27453634 PMCID: PMC4936439 DOI: 10.1080/09064700902988905] [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] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2008] [Revised: 04/06/2009] [Accepted: 04/22/2009] [Indexed: 11/09/2022]
Abstract
Antibody titers raised for vaccinations against avian influenza (AI) and Newcastle disease (ND) were higher in Chinese Beijing-You (BJY) than in White Leghorn (WL) (P < 0.001), but there was no breed difference in titers for sheep red blood cells (SRBC). Genotyping by PCR-SSCP identified seven haplotypes in WL and 17 in BJY. After sequencing PCR products (35 and 85, respectively), 43 (WL) and 47 (BJY) single nucleotide polymorphisms (SNPs) were found in the 264 bp of exon 2. In WL chickens, significant associations were found with antibody responses to AI (two SNPs), ND (six SNPs), and SRBC (one SNP), while in BJY there was association with responses to ND (two SNPs) and SRBC (two SNPs), but none with AI. These results indicate that the genomic region bearing exon 2 of the major histocompatibility complex B-F gene has significant effects on antibody responses to SRBC and vaccination against AI and ND. Different SNPs affected antibody titers for each of the antigens and they differed between these very distinct breeds.
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Affiliation(s)
- L B Liu
- Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing 100094, China
| | - C M Wu
- Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing 100094, China
| | - J Wen
- Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing 100094, China
| | - J L Chen
- Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing 100094, China
| | - M Q Zheng
- Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing 100094, China
| | - G P Zhao
- Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing 100094, China
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Chang CJ, Wu MW, Wu CM. Effect of chemical structure and shear force on the morphology and properties of jet printed black micropatterns using imide epoxy binders. J Appl Polym Sci 2009. [DOI: 10.1002/app.28978] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [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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Wu CM, Cao JL, Zheng MH, Ou Y, Zhang L, Zhu XQ, Song JX. Effect and mechanism of andrographolide on the recovery of Pseudomonas aeruginosa susceptibility to several antibiotics. J Int Med Res 2008; 36:178-86. [PMID: 18304418 DOI: 10.1177/147323000803600123] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Effectiveness and mechanism of action of andrographolide on the recovery of Pseudomonas aeruginosa susceptibility to antibiotics was investigated. In the presence of andrographolide, the Mueller-Hinton broth dilution method measured minimal inhibitory concentrations (MIC) of ceftazidine, cefpirome, chloramphenicol, L-ofloxacin, kanamycin, imipenem and meropenem. Real-time fluorescence quantitative polymerase chain reaction was used to determine mexB mRNA expressions in P. aeruginosa PAO1 strain and MexAB-OprM overexpressing strain. Relative mexB mRNA expression was detected in both strains incubated for 3 and 9 h. When andrographolide-treated groups were compared with controls, the MIC of ceftazidine, cefpirome, L-ofloxacin and meropenem for both strains decreased, and the relative mexB mRNA expression was significantly lower, although between andrographolide groups there were no significant differences. Compared with the inactivated quorum-sensing system, relative amounts of mexB mRNA in the PAO1 strain and MexAB-OprM overexpressing strain in the activated quorum-sensing system increased 10- and 30-fold, respectively. Andrographolide recovered P. aeruginosa susceptibility to antibiotics and reduced the MexAB-OprM efflux pump expression level.
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Affiliation(s)
- C M Wu
- Department of Liver Diseases, The Traditional Chinese Medical Hospital of Wenzhou, Wenzhou, China
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Fukui K, Morioka T, Nishio S, Kawamura T, Wu CM, Uesaka T, Yoshiura T, Sasaki M. [Multiple focal cortical dysplasias presenting with intractable epilepsy: case report]. No To Shinkei 2001; 53:961-7. [PMID: 11725507] [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] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
A 14-year-old female, who had intractable epilepsy associated with multiple focal cortical dysplasias (FCD), was reported. She developed intractable epilepsy at the age of 7 and was diagnosed as having frontal lobe epilepsy based on the seizure semiology and interictal EEG. MRI revealed multiple lesions in the right frontal, bilateral occipital and left parietal lobes. EEG demonstrated that ictal discharge was preceded by spike on the right frontal region and FDG-PET showed hypometabolic area in the right frontal lobe. Chronic subdural electrode recordings from the right frontal lobe indicated that ictal onset zone was located around the right frontal lesion, especially frontal tip and base, and these areas including the lesion were resected. Postoperatively, residual seizure was noted although seizure frequency was decreased. It is well known that, postoperatively, satisfactory seizure outcome can be obtained in patients with FCD. However, further investigation in terms of surgical indication and strategies for multiple FCD should be needed.
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Affiliation(s)
- K Fukui
- Department of Neurosurgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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Abstract
Blood-brain barrier (BBB) permeability during sepsis with Escherichia coli or Streptococcus pneumoniae was examined in a mouse model and measured by a circulating beta-galactosidase tracer. The leakage of brain microvascular vessels during sepsis was confirmed by transmission electron microscopic examination of brain tissues stained with horseradish peroxidase. The increase of BBB permeability induced by E. coli and S. pneumoniae, which was maximal at 3 h and 12 h after injection, respectively, was transient because of rapid clearance of the bacteria from the blood. Tumour necrosis factor-alpha (TNF-alpha) was stained on microvascular vessels of the brain during sepsis and intravenous injection of recombinant TNF-alpha also increased the BBB permeability. The increase in BBB permeability induced by either E. coli or S. pneumoniae could be inhibited by anti-TNF-alpha antibody. It was concluded that circulating TNF-alpha generated during sepsis induced the increase in BBB permeability.
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Affiliation(s)
| | | | - C M Wu
- Departments of Microbiology and Immunology, *Anatomy and †Paediatrics, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - C C Liu
- Departments of Microbiology and Immunology, *Anatomy and †Paediatrics, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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Shieh SJ, Chiu HY, Shi GY, Wu CM, Wang JC, Chen CH, Wu HL. A novel platelet-rich arterial thrombosis model in rabbits. Simple, reproducible, and dynamic real-time measurement by using double-opposing inverted-sutures model. Thromb Res 2001; 103:363-76. [PMID: 11553369 DOI: 10.1016/s0049-3848(01)00317-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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: 11/21/2022]
Abstract
Though numerous animal thrombosis models have been introduced, an easy, reliable, and reproducible arterial thrombosis model remains a continuing challenge prior to a thrombolytic study. In an effort to evaluate the efficiency of various recombinant thrombolytic agents with specific affinity to activated platelets in vivo, we developed a novel double-opposing inverted-sutures model to create a platelet-rich thrombus in the femoral artery of rabbits. The arteriotomy was done semicircumferentially, and variously sized microsurgical sutures were introduced intraluminally in a double-opposing inverted manner. The animals were divided into three groups according to the double-opposing inverted-sutures used: Group 1 with 10-0 nylon (n=6), Group 2 with 9-0 nylon (n=6), and Group 3 with 8-0 nylon (n=22). The superficial epigastric branch was cannulated with a thin polyethylene (PE) tube for intraarterial administration of the studied thrombolytic agent. The blood flow was continuously measured with a real-time ultrasonic flow meter. Within 2 h of installation of the sutures, there was no thrombus formation in either Group 1 or 2. In Group 3, the thrombosis rate was 91% (20 of 22) under a steady baseline flow (with an average of 12.23+/-2.40 ml/min). It was highly statistically significant with a P-value of .0000743 using Fisher's Exact Test. The averaged time to thrombosis was 21.8+/-9.8 min. The ultrasonic flow meter to record the dynamic real-time measurement of blood flow was a guideline for thrombus formation or dissolution, which was correlated with the morphological findings of stenotic status of the vessel detected by the Doppler sonography. The components of the thrombus were proven to be platelet-rich predominant by histological examination via hematoxylin and eosin (H&E) stain and transmission electron microscopy (TEM). To confirm that the double-opposing inverted-sutures model would be useful for a study of thrombolytic agents, we evaluated the effects of recombinant tissue-type plasminogen activator (rt-PA) and streptokinase-human plasminogen (SK-HPlg). The average time to thrombolysis post rt-PA infusion was 16.0+/-8.2 min and that of SK-HPlg was 79.6+/-23.1, which were similar to the previous reports. In conclusion, the novel double-opposing inverted-sutures (8-0 nylon) model provides a simple, reliable, and reproducible platelet-rich arterial thrombosis model with noninvasive and dynamic real-time measurement. It may be applied in assessing the efficiency of the recombinant thrombolytic agents and offers many advantages of an arterial platelet-rich in vivo thrombosis model.
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Affiliation(s)
- S J Shieh
- Division of Plastic Surgery, Department of Surgery, College of Medicine, National Cheng Kung University, 1 Ta Hsueh Road, Tainan, 70101 Taiwan, ROC
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Wu CM, Inamura T, Ikezaki K, Nakamizo A, Inoha S, Yaosaka F, Fukui M. Efficacy of single-bolus vs. frequent low-dose treatment with nitrosourea in experimental gliomas. Anticancer Res 2001; 21:1835-8. [PMID: 11497267] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
BACKGROUND Malignant glioma remains a fatal disease. Continuous or frequent low-dose (FLD) chemotherapy with nitrosoureas reportedly causes fewer side-effects than single-bolus therapy without decreasing the antitumour effects. MATERIALS AND METHODS To study the effect of FLD treatment with nimustine (ACNU) in rats with glioma, we intracerebrally inoculated with C6 glioma cells. We began the ACNU treatment 5 or 8 days later (total dose, 25 or 40 mg/kg) i.p. as either one bolus or smaller doses spread over 5 days week. RESULTS At a total dose of 25 mg/kg beginning at day 8, survival duration did not differ between untreated controls and the FLD group, while the bolus significantly prolonged survival; the FLD group showed some improvement beyond control survival at 40 mg/kg (each p <0.001). Beginning treatment after 5 rather than 8 days prolonged survival somewhat further. CONCLUSION FLD treatment with ACNU is less effective against experimental glioma in rats than bolus treatment.
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Affiliation(s)
- C M Wu
- Department of Neurosurgery, Graduate School of Medical Sciences, Kyushu University, Japan
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Abstract
The VA Medical Center in Washington, DC, was the nexus for a number of computerization projects that were initiated by the Department of Veterans Affairs. The culmination of these initiatives is a software package that presents the complete electronic patient record in an easy-to-use graphic user interface. This record combines text data from the legacy data base, diagnostic images from patient procedures, electrocardiograms from a commercial server, an Internet connection, and a hospital web site with pertinent reference information. The information is available in over 1000 places in the hospital and can be accessed remotely using a remote access server. The computerization of the medical record has improved hospital efficiency, has made physician access to patient information more reliable, has opened new opportunities for patient education, and has given healthcare providers more time to care for patients.
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Wu CM, Liu TJ, Huang CC, Hwang TL, Pan RL. Human progesterone receptor shows differential sensitivity to carboxyl group modifying agents when bound to agonist and antagonist ligands. Chang Gung Med J 2001; 24:151-8. [PMID: 11355082] [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] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
Abstract
BACKGROUND Modulation of human uterine progesterone receptor (PR) in relation to its binding to synthetic steroids with known agonist (R5020) and antagonist (triamcinolone acetonide, T.A.) properties was studied in the presence of the specific carboxyl group modifiers, N,N'-dicyclohexylcarbodiimide (DCCD) and 1-ethyl-3-carbodiimide hydrochloride (EDC). METHODS Uterine cytosol was treated with DCCD or EDC. The amounts of total bound were detected using the steroid binding measurements. The formation and transformation of progesterone-receptor complexes (PRc) were analyzed using sedimentation rate analysis. RESULTS Our studies show that the modification of the COOH group differentially influences the properties of mammalian PR binding with either R5020 or T.A. DCCD and EDC affect the steroid binding of PR by decreasing the binding sites, not by the changing the affinity. CONCLUSION Our studies indicate the importance of the carboxyl group in steroid binding by PR. This implies that both aspartic acid and glutamic acid residues, which have the carboxyl group, may play an important role when PR binds with steroid ligands.
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Affiliation(s)
- C M Wu
- Department of Surgery, Chang Gung Memorial Hospital, 5, Fu-Shin Street, Kweishan, Taoyuan, Taiwan, R.O.C. chimingwu@.cgmh.org.tw
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Abstract
A mixture of soybean oil and/or water, sugar and/or monosodium glutamate (MSG) was water-boiled or oil-heated at 100, 120, 140, 160, or 170 degrees C, respectively, and volatile compounds produced were isolated by solid-phase microextraction and then identified by GC and GC/MS. Oxidative thermal degradation products of fatty acids (OTDPFA) were the major volatile compounds detected for all water-boiled samples. When MSG and sugar were heated together, 2, 5-dimethyl pyrazine and methyl pyrazine were also detected at or after 160 min heating. Water added in soybean oil increased OTDPFA production. In oil-heated samples of soybean oil alone, soybean oil with MSG, and soybean oil with sugar, OTDPFA were also the major compounds found. The samples containing MSG also produced 2-pyrrolidone, and the samples containing sugar also produced furfural and 5-hydroxy methyl furfural. The samples containing soybean oil, sugar, and MSG produced 23 pyrazines, OTDPFA, and gamma-butyrolactone as the major volatile compounds. The contents of OTDPFA were lower in MSG plus sugar and MSG-added samples, and it is postulated that antioxidant activities were produced in cooking.
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Affiliation(s)
- C M Wu
- Tingyi (Cayman Island) Holding Corp., TEDA Tianjin, China.
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Abstract
A new, to our knowledge, heterodyne interferometer for differential displacement measurements is presented. It is, in principle, free of periodic nonlinearity. A pair of spatially separated light beams with different frequencies is produced by two acousto-optic modulators, avoiding the main source of periodic nonlinearity in traditional heterodyne interferometers that are based on a Zeeman split laser. In addition, laser beams of the same frequency are used in the measurement and the reference arms, giving the interferometer theoretically perfect immunity from common-mode displacement. We experimentally demonstrated a residual level of periodic nonlinearity of less than 20 pm in amplitude. The remaining periodic error is attributed to unbalanced ghost reflections that drift slowly with time.
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Affiliation(s)
- C M Wu
- Physics Laboratory, National Institute of Standards and Technology, Building 221, Room A141, Gaithersburg, Maryland 20899, USA
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Chiou CJ, Wu CM, Wang RH, Lee ST. [Utilizing the PRECEDE model to predict health examination behavior of the elderly]. Kaohsiung J Med Sci 1999; 15:348-58. [PMID: 10441942] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023] Open
Abstract
Health examination of the elderly in Taiwan, the reported rates of health examination of the elderly were always below 30%. In order to explore the predictors related to the behavior of health examination of the elderly, the PRECEDE model was adopted for this study. Both the 1200 participants and spare samples were recruited from eleven districts of Kaohsiung city. 1193 participants had been completed by home interview. Sample size was based on the distribution of the elderly in the whole city and the stratified sampling method was applied. There was no significant difference after comparing the rates of gender, age, and examination between sample and population. The results showed that seven factors could be used to predict the behavior of health examination of the elderly. In the individual predisposing factors, "numbers of chronic diseases", "knowledge of health examination", "previous health examination", and "health promotion behavior" were related to the behavior of health examination of the elderly. In reinforcing factors, "attitude of family members for health examination", and in enabling factors "the guide and the convenience of health-examined services" also showed significantly affecting examination behavior. Therefore, referring to the improvement to be the examination rate, we can intervene or do something through academic, practical and administrative approaches.
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Affiliation(s)
- C J Chiou
- School of Nursing, Kaohsiung Medical College, Taiwan, Republic of China
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Affiliation(s)
- C M Wu
- Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, 601 N. Caroline Street, Baltimore, MD 21287-0801, USA
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Wu SG, Lin SL, Wu CM, Jeng FR, Su CZ. Optimal control of blood pressure can reverse left ventricular hypertrophy in uremic hypertensive hemodialysis patients. Kaohsiung J Med Sci 1999; 15:62-8. [PMID: 10089714] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023] Open
Abstract
We investigated the effects of antihypertensive treatment on left ventricular hypertrophy (LVH) of long-term hemodialysis patients. In uremic patients, it is still controversial in antihypertensive effect to the regression of LVH. The left ventricular size and function of 39 uremic hypertensive long-term hemodialysis patients (27 men, 12 women, mean age 58.3) was evaluated with M-mode, 2-dimensional and Doppler echocardiography before, and 12 months after, the start of combined antihypertensive therapy. This therapy included angiotensin II converting enzyme inhibitors, beta-blockers and calcium antagonists. Patients were classified as responders or nonresponders, depending upon whether their systolic blood pressure (SBP) decreased by more than 10 mmHg after antihypertensive treatment for 12 months. Before treatment, 36 (92%) patients had LVH and diastolic dysfunction and three (8%) had systolic dysfunction. At the end of 12 months, only 25 (64%) patients had LVH, 30 (77%) had diastolic dysfunction and 2 (5%) had systolic dysfunction. Left ventricular mass index (LVMI) also decreased from 203.63 +/- 70.47 g/m2 to 178.57 +/- 67.31 g/m2. LVMI correlated with systolic blood pressure (SBP) but did not correlate with diastolic blood pressure (DBP). There were 26 responders and 13 non-responders. Among responders, both the SBP (153.91 +/- 13.24 mmHg vs 134.43 +/- 14.21 mmHg, p < 0.01) and DBP (90.39 +/- 7.89 mmHg vs 79.98 +/- 7.35 mmHg, p < 0.01) decreased significantly after antihypertensive therapy. Responders also exhibited progressive regression of LVH (LVMI decreased significantly from 208.52 +/- 72.03 g/m2 to 168.52 +/- 55.53 g/m2, p < 0.05). However, LVH regression was not found in nonresponders (LVMI showed 194.84 +/- 64.36 g/m2 vs 193.66 +/- 77.67 g/m2). We conclude that good control of blood pressure can reverse LVH in hypertensive hemodialysis patients.
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Affiliation(s)
- S G Wu
- Department of Internal Medicine, Municipal General Hospital for Women and Children, Kaohsiung, Taiwan, Republic of China
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Wu CM, Fishman EK, Hruban RK, Schlott WD, Cameron JL. Serous cystic neoplasm involving the pancreas and liver: an unusual clinical entity. Abdom Imaging 1999; 24:75-7. [PMID: 9933679 DOI: 10.1007/s002619900445] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Serous cystic neoplasm of the pancreas is typically considered to represent a benign pancreatic neoplasm. We present a case where the tumor displayed unusually aggressive behavior with metastatic disease to the liver and pancreatic bed. Although serous cystic neoplasms should be considered a benign lesion and will be cured in most cases by surgical excision, the radiologist should be aware that on occasion they can exhibit aggressive behavior.
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Affiliation(s)
- C M Wu
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Medical Hospital, 600 North Wolfe Steet, Baltimore, MD, 21287, USA
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Abstract
The periodic nonlinearity that arises from nonideal laser sources and imperfections of optical components limits the accuracy of displacement measurements in heterodyne interferometry at the nanometer level. An analytical approach to investigating the nonlinearity is presented. Frequency mixing, polarization mixing, polarization-frequency mixing, and ghost reflections are all included in this investigation. A general form for the measurement signal, including that of the distortions, is given. The analytical approach is also applicable to homodyne interferometry.
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Abstract
The common sites of metastasis from breast carcinoma include local and distant lymph nodes, lung parenchyma, bone, liver and brain. While less common, gastrointestinal carcinoma, involving everything from the tip of the tongue to the rectum, secondary to metastatic breast carcinoma have been reported. Many of these lesions occur years after treatment of the primary breast cancer and they can be confused with a second primary. We present a case of breast cancer metastatic to the esophagus which produced symptoms of progressive dysphagia in a women thirteen years after mastectomy and radiation therapy for breast cancer.
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Affiliation(s)
- C M Wu
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Medical Institutions, Baltimore, Maryland 21287-0801, USA
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