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Ren YB, Wang XW, Bai JX, Liu C, Yu SL, Zhou Y, Lin CC, Yao DH, Huang J, Wang JH. Three new tyrosol derivatives from Huangjing wine. J Asian Nat Prod Res 2022; 24:1018-1024. [PMID: 34842008 DOI: 10.1080/10286020.2021.2008371] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 11/16/2021] [Indexed: 06/13/2023]
Abstract
Phytochemical investigation on the concentrate of Huangjing wine, resulted in the isolation of three new tyrosol derivatives 4'''-hydroxyphenethyl 2-(R)-hydroxy-3-phenylpropionate (1), 4'''-hydroxyphenethyl(4'-hydroxy-3'-methoxyphenyl)propionate (2) and 4''-hydroxyphenethyl ethyl succinate (3), together with 5 known compounds, ferulic acid (4), L-phenyllactic acid (5), hydroxytyrosol (6), dihydroferulic acid (7), cyclo(L-Pro-D-Tyr) (8). Their structures were elucidated using spectroscopic analysis and by comparison with the literature data. All compounds displayed antioxidant effect in the DPPH (2,2-diphenyl-1-picrylhydrazyl) radical. Among them, the new compound 2 exhibited obvious antioxidant effect, and new compounds 1 and 3 exhibited medium antioxidant effect.
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Affiliation(s)
- Yan-Bin Ren
- Department of Medicinal Chemistry and Natural Medicine Chemistry, College of Pharmacy, Harbin Medical University, Harbin 150000, China
| | - Xing-Wen Wang
- Department of Medicinal Chemistry and Natural Medicine Chemistry, College of Pharmacy, Harbin Medical University, Harbin 150000, China
| | - Jia-Xuan Bai
- Department of Medicinal Chemistry and Natural Medicine Chemistry, College of Pharmacy, Harbin Medical University, Harbin 150000, China
| | - Chang Liu
- Department of Medicinal Chemistry and Natural Medicine Chemistry, College of Pharmacy, Harbin Medical University, Harbin 150000, China
| | - Si-Lin Yu
- Department of Medicinal Chemistry and Natural Medicine Chemistry, College of Pharmacy, Harbin Medical University, Harbin 150000, China
| | - Yue Zhou
- Department of Medicinal Chemistry and Natural Medicine Chemistry, College of Pharmacy, Harbin Medical University, Harbin 150000, China
| | - Cong-Cong Lin
- Department of Medicinal Chemistry and Natural Medicine Chemistry, College of Pharmacy, Harbin Medical University, Harbin 150000, China
| | - Da-Hong Yao
- School of Pharmaceutical Sciences, Health Science Center, Shenzhen Technology University, Shenzhen 518060, China
| | - Jian Huang
- Department of Medicinal Chemistry and Natural Medicine Chemistry, College of Pharmacy, Harbin Medical University, Harbin 150000, China
| | - Jin-Hui Wang
- Department of Medicinal Chemistry and Natural Medicine Chemistry, College of Pharmacy, Harbin Medical University, Harbin 150000, China
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Chan SL, Lin CC, Chau PH, Takemura N, Fung JTC. Evaluating online learning engagement of nursing students. Nurse Educ Today 2021; 104:104985. [PMID: 34058645 DOI: 10.1016/j.nedt.2021.104985] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 04/20/2021] [Accepted: 05/17/2021] [Indexed: 05/24/2023]
Abstract
BACKGROUND Previous studies suggest that increased learning satisfaction may encourage learning engagement in an online learning environment. OBJECTIVES To evaluate the level of learning engagement and its relationship with students' perceived learning satisfaction in an online clinical nursing elective course. DESIGN A prospective interventional study. SETTINGS A nursing course was converted to an online format because of the coronavirus disease COVID pandemic. PARTICIPANTS Part-time post-registration nursing undergraduates enrolled in an elective online clinical course. METHODS Related teaching and learning strategies were deployed in the course using the Community of Inquiry framework. All students who completed the course were invited to complete an online survey that included a validated Online Student Engagement questionnaire (OSE). Pearson's correlations were used to determine the association between perceived learning satisfaction and learning engagement. A logistic regression model was used to explore the associations of gender, age, working experience and perceived learning satisfaction with higher learning engagement. RESULTS The questionnaires were completed by 56 of 68 students (82%). The Pearson's correlation coefficient between the mean perceived learning satisfaction and OSE scores was 0.75 (p < .001). Twenty-five students (45%) were identified as highly engaged, using a cut-off of ≥3.5 for the mean OSE score. The mean perceived learning satisfaction (SD) score differed significantly between highly engaged and not highly engaged students [4.02 (0.49) vs. 3.27 (0.62), p < .001]. The logistic regression model showed that a greater perceived learning satisfaction [adjusted odds ratio (OR): 17.2, 95% C.I.: 3.46-86.0, p = .001] was associated with an increased likelihood of higher learning engagement, and >1 year of working experience (adjusted OR: 0.11, 95% C.I.: 0.01-0.89, p = .0039) was associated with a decreased likelihood of higher learning engagement. CONCLUSIONS The study findings suggest that perceived learning satisfaction predicts learning engagement among nursing students in this online learning course.
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Affiliation(s)
- S L Chan
- University of Hong Kong School of Nursing, Hong Kong.
| | - C C Lin
- University of Hong Kong School of Nursing, Hong Kong.
| | - P H Chau
- University of Hong Kong School of Nursing, Hong Kong.
| | - N Takemura
- University of Hong Kong School of Nursing, Hong Kong.
| | - J T C Fung
- University of Hong Kong School of Nursing, Hong Kong.
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Lin CC, Lai CH, Lin WS, Lin CS. Severe myocardial bridge presenting as paroxysmal atrioventricular block. J Postgrad Med 2021; 67:171-173. [PMID: 33835057 PMCID: PMC8445129 DOI: 10.4103/jpgm.jpgm_1027_20] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 12/09/2020] [Accepted: 12/24/2020] [Indexed: 11/11/2022] Open
Abstract
Chest pain complicated with electrocardiographic changes is not an uncommon scenario in emergency departments, which should be examined cautiously. We describe a 51-years-old man with a myocardial bridge of coronary artery presenting with simultaneous Mobitz type I atrioventricular block on electrocardiography. Echocardiography excluded valvular abnormality and systolic/diastolic dysfunction. Coronary angiography confirmed the diagnosis of a myocardial bridge at the middle segment of the left anterior descending artery, involving the most dominant septal perforator branch with marked systolic compression. The patient underwent coronary artery bypass grafting surgery and was followed up uneventfully at the outpatient department with medical treatment of diltiazem and clopidogrel. The present case is being reported to highlight that clinicians should be alert to such a congenital abnormality as a potential cause of repeated myocardial infarction and conduction abnormality.
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Affiliation(s)
- CC Lin
- Division of Cardiology, Department of Internal Medicine, Taichung Armed Forces General Hospital, Taichung City, Taiwan
| | - CH Lai
- Division of Cardiology, Department of Internal Medicine, Taichung Armed Forces General Hospital, Taichung City, Taiwan
| | - WS Lin
- Division of Cardiology, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei City, Taiwan
| | - CS Lin
- Division of Cardiology, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei City, Taiwan
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Lee YW, Chuang JY, Lin CC, Paul MC, Das S, Dhar A. High-efficiency picosecond mode-locked laser using a thulium-doped nanoengineered yttrium-alumina-silica fiber as the gain medium. Opt Express 2021; 29:14682-14693. [PMID: 33985185 DOI: 10.1364/oe.422947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 04/22/2021] [Indexed: 06/12/2023]
Abstract
We report the theoretical and experimental investigation of a self-starting mode-locked fiber laser with a nanoengineered Tm3+-doped yttrium-alumina-silica (YAS) fiber as the gain medium. The YAS fiber exhibits a higher capability of Tm3+ cluster elimination than commercial silica fibers. The Tm3+ fluorescence properties and YAS dispersion are well characterized. As a result, an efficient picosecond mode-locked fiber laser is demonstrated with a slope efficiency of 14.14% and maximum pulse energy of 1.27 nJ. To the best of our knowledge, this is the first mode-locked fiber laser based on a Tm3+-doped YAS fiber. The experimental observation is also supported by the numerical analysis.
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Sun DJ, Zhu LJ, Zhao YQ, Zhen YQ, Zhang L, Lin CC, Chen LX. Diarylheptanoid: A privileged structure in drug discovery. Fitoterapia 2020; 142:104490. [DOI: 10.1016/j.fitote.2020.104490] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Revised: 01/29/2020] [Accepted: 01/31/2020] [Indexed: 12/11/2022]
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Hsieh YC, Liao YC, Li CH, Lin JC, Weng CJ, Lin CC, Lo CP, Huang KC, Huang JL, Lin CH, Wu TJ, Sheu WH. P5644Hypoglycemic episodes increase the risk of ventricular arrhythmias and sudden cardiac arrest in patients with type 2 diabetes - a nationwide cohort study. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0587] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Hypoglycemic episode (HE) increases the risk of cardiovascular mortality. The impact of HE on the risk of sudden death remains unclear. We hypothesized that HE increases the risks of ventricular arrhythmia (VA) and sudden cardiac arrest (SCA), and that anti-diabetic agents (ADAs) causing hypoglycemia also increase the risks of VA and SCA.
Methods
Patients aged ≥20 years with newly diagnosed diabetes were identified from the Taiwan National Insurance Database. HE was defined as the presentation of hypoglycemic coma or specified/unspecified hypoglycemia. For control group, we included diabetic patients without HE, and they were frequency-matched to the HE group at a 4:1 ratio. The primary outcome was the occurrence of any event of VA (including ventricular tachycardia and fibrillation) and SCA during the defined follow-up periods. Multivariate Cox hazards regression model was used to evaluate the hazard ratio (HR) for VA or SCA.
Results
A total of 54,303 diabetic patients were screened with 1,037 of them in the HE group, and 4,148 in the control group. During a mean follow-up period of 3.3±2.5 years, 29 VA/SCA events had occurred. Compared to the control group, the HE group had a higher incidence of VA/SCA (adjusted HR: 2.42, p=0.04). Diabetic patients medicated with insulin for glycemic control increased the risk of VA/SCA compared to those without insulin (adjusted HR: 3.05, p=0.01).
Kaplan-Meier survival curves
Conclusions
HEs in patients with diabetes increased the risks of VA and SCA compared to those without. Their use of insulin also independently increased the risk of VA/SCA.
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Affiliation(s)
- Y C Hsieh
- Taichung Veterans General Hospital, Cardiovascular Center, Taichung, Taiwan
| | - Y C Liao
- Taichung Veterans General Hospital, Cardiovascular Center, Taichung, Taiwan
| | - C H Li
- Taichung Veterans General Hospital, Cardiovascular Center, Taichung, Taiwan
| | - J C Lin
- Chiayi Branch, Taichung Veterans General Hospital, Department of Internal Medicine, Chiayi, Taiwan
| | - C J Weng
- Taichung Veterans General Hospital, Cardiovascular Center, Taichung, Taiwan
| | - C C Lin
- Taichung Veterans General Hospital, Department of Medical Research, Taichung, Taiwan
| | - C P Lo
- Providence University, Department of Financial Engineering, Taichung, Taiwan
| | - K C Huang
- Providence University, Department of Financial Engineering, Taichung, Taiwan
| | - J L Huang
- Taichung Veterans General Hospital, Cardiovascular Center, Taichung, Taiwan
| | - C H Lin
- Taichung Veterans General Hospital, Department of Medical Research, Taichung, Taiwan
| | - T J Wu
- Taichung Veterans General Hospital, Cardiovascular Center, Taichung, Taiwan
| | - W H Sheu
- Taichung Veterans General Hospital, Division of Endocrinology and Metabolism, Department of Medicine, Taichung, Taiwan
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Chen MN, Ho KY, Hung YN, Su CC, Kuan CH, Tai HC, Cheng NC, Lin CC. Pre-treatment quality of life as a predictor of distant metastasis-free survival and overall survival in patients with head and neck cancer who underwent free flap reconstruction. Eur J Oncol Nurs 2019; 41:1-6. [PMID: 31358241 DOI: 10.1016/j.ejon.2019.05.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 05/14/2019] [Accepted: 05/14/2019] [Indexed: 12/22/2022]
Abstract
PURPOSE This study examined the prognostic associations of pre-treatment quality of life (QoL) with overall survival (OS) and distant metastasis-free survival (DFMS) among patients with head and neck cancer (HNC) who underwent free flap reconstruction. METHODS A cohort of 127 HNC patients who received free flap reconstruction between November 2010 and June 2014 at a hospital were recruited. Pre-treatment QoL was measured by the University of Washington Quality of Life Questionnaire, which contains six physical domains, including speech, swallowing, appearance, saliva, taste and chewing, as well as the six social-emotional domains of pain, activity, recreation, shoulder, mood, and anxiety. Cox regression analyses were performed. RESULTS Results showed that pre-treatment QoL was predictive of OS and DMFS. Of the domains, swallowing, chewing, speech, taste, saliva, pain and shoulder were demonstrated to be significant predictors of OS. Additionally, swallowing, chewing, speech, pain and activity were demonstrated making significant contributions to DMFS. CONCLUSION Our data supported that physical domains of pre-treatment QoL were predictors for OS and DFMS in HNC patients with free-flap reconstruction. Longitudinal studies are warranted to clarify the prognostic abilities of social-emotional domains. Information on pre-treatment QoL should be taken into account to individualize care plan for these patients, and hence prolong their survival.
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Affiliation(s)
- M N Chen
- Department of Nursing, National Taiwan University Hospital, Taipei, Taiwan; School of Nursing, College of Nursing, Taipei Medical University, Taipei, Taiwan.
| | - K Y Ho
- School of Nursing, The University of Hong Kong, HKSAR, China.
| | - Y N Hung
- School of Gerontology and Health Management, College of Nursing, Taipei Medical University, Taipei, Taiwan.
| | - C C Su
- Department of Nursing, Chang Gung University of Science and Technology, Chiayi, Taiwan.
| | - C H Kuan
- Graduate Institute of Clinical Research, College of Medicine, National Taiwan University, Taipei, Taiwan; Division of Plastic Surgery, Department of Surgery, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan.
| | - H C Tai
- Division of Plastic Surgery, Department of Surgery, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan.
| | - N C Cheng
- Division of Plastic Surgery, Department of Surgery, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan.
| | - C C Lin
- School of Nursing, College of Nursing, Taipei Medical University, Taipei, Taiwan; School of Nursing, The University of Hong Kong, HKSAR, China; Alice Ho Miu Ling Nethersole Charity Foundation Professor in Nursing, Hong Kong.
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Hao S, Lu CH, Lin CC, Chen HY, Li L, Wang YB, Feng MX, He Y. [The role and mechanism of 2-deoxyglucose in reversing osimertinib-acquired resistance of non-small cell lung cancer cell line]. Zhonghua Jie He He Hu Xi Za Zhi 2019; 42:198-205. [PMID: 30845397 DOI: 10.3760/cma.j.issn.1001-0939.2019.03.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the role and mechanism of 2-deoxyglucose (2-dg) in reversing osimertinib- acquired resistance of non-small cell lung cancer(NSCLC)cell line. Methods: The NSCLC line H1975 (purchased from the American Type Culture Collection) was conducted by induction method in vitro to construct the osimertinib-resistance NSCLC cell line H1975-OR. The osimertinib-resistance of H1975-OR cell line was examined by 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, colony-formation assay, Ki67 incorporation assay and the expression of apoptosis-related protein. The glycolysis level was assayed by the lactic acid production measured in the culture medium supernatant of H1975 and H1975-OR. The expression of glycolysis key enzymes (HK2, GLUT1, P-PKM2) and apoptosis-related protein (BIM, Bcl-2) were detected by Western blot. The cells were divided into control group, 2-deoxyglucose (4 mmol/L) monotherapy group, osimertinib (3 μmol/L) monotherapy group and 2-deoxyglucose (4 mmol/L)+ osimertinib (3 μmol/L) combination therapy group, then the apoptosis rate of cells was measured by flow cytometry to evaluate the pro-apoptotic ability of drugs. Date were analyzed by Independent-Samples t-test using SPSS 16.0 statistical software. Results: The glycolysis level of osimertinib-sensitive cell line H1975 was lower than that of osimertinib-resistance cell line H1975-OR [the yield of lactic acid, respectively, was (21.0±0.9) and (26.5±2.8) mmol·L(-1)·10(4)cells(-1), P<0.05]. The osimertinib- acquired resistance of H1975-OR could be reversed by 4 mmol/L 2-deoxyglucose(the IC(50) value of osimertinib in H1975-OR cell line decreased from (7.0±1.9) μmol/L to (1.4±0.1) μmol/L, which was close to the IC(50) value of osimertinib in H1975 cell line (1.0±0.2) μmol/L. The apoptosis rate of H1975-OR was significantly higher in 2-deoxyglucose + osimertinib combination therapy group (26.7±2.4)%, compared to control group (5.1±0.7)%, 2-deoxyglucose monotherapy group (6.1±2.5)% and osimertinib monotherapy group (11.4±2.7)%(all P<0.05). The expression of pro-apoptotic protein BIM in H1975-OR was significantly higher in 2-deoxyglucose+ osimertinib combination therapy group (177.8±28.1)% and the expression of anti-apoptotic protein Bcl-2 in H1975-OR was significantly lower in 2-deoxyglucose+ osimertinib combination therapy group (24.6±5.2)%, compared to control group (100±0)%, all P<0.05. Conclusion: 2-deoxyglucose can reverse the acquired resistance of NSCLC cell line to osimertinib, which may be related to the inhibition of cell glycolysis and the induction of apoptosis.
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Affiliation(s)
- S Hao
- Department of Respiratory Disease, Daping Hospital, Army Military Medical University, Chongqing 400042, China
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Suen KM, Lin CC, Seiler C, George R, Poncet-Montange G, Biter AB, Ahmed Z, Arold ST, Ladbury JE. Phosphorylation of threonine residues on Shc promotes ligand binding and mediates crosstalk between MAPK and Akt pathways in breast cancer cells. Int J Biochem Cell Biol 2018; 94:89-97. [PMID: 29208567 DOI: 10.1016/j.biocel.2017.11.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 11/16/2017] [Accepted: 11/30/2017] [Indexed: 01/14/2023]
Abstract
Scaffold proteins play important roles in regulating signalling network fidelity, the absence of which is often the basis for diseases such as cancer. In the present work, we show that the prototypical scaffold protein Shc is phosphorylated by the extracellular signal-regulated kinase, Erk. In addition, Shc threonine phosphorylation is specifically up-regulated in two selected triple-negative breast cancer (TNBC) cell lines. To explore how Erk-mediated threonine phosphorylation on Shc might play a role in the dysregulation of signalling events, we investigated how Shc affects pathways downstream of EGF receptor. Using an in vitro model and biophysical analysis, we show that Shc threonine phosphorylation is responsible for elevated Akt and Erk signalling, potentially through the recruitment of the 14-3-3 ζ and Pin-1 proteins.
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Affiliation(s)
- K M Suen
- Department of Biochemistry and Molecular Biology, The University of Texas MD Anderson Cancer Center, Unit 1954, 1515 Holcombe Blvd, Houston, TX 77030, USA; Graduate School of Biological Sciences, The University of Texas MD Anderson Cancer Center, Unit 1954, 1515 Holcombe Blvd, Houston, TX 77030, USA
| | - C C Lin
- School of Molecular and Cellular Biology, University of Leeds, LC Miall Building, Leeds, LS2 9JT, UK
| | - C Seiler
- School of Molecular and Cellular Biology, University of Leeds, LC Miall Building, Leeds, LS2 9JT, UK
| | - R George
- Structural Biology STP, The Francis Crick Institute, Lincolns Inn Fields Laboratory, 44 Lincolns Inn Fields, Holborn, London, WC2A 3LY, UK
| | - G Poncet-Montange
- Orthogon Therapeutics, 960 Turnpike Street, Unit 10, Canton, MA 02021, USA
| | - A B Biter
- Sabin Vaccine Institute and Texas Children's Hospital Center for Vaccine Development, 1102 Bates Avenue, Houston, TX 77030, USA
| | - Z Ahmed
- Department of Biochemistry and Molecular Biology, The University of Texas MD Anderson Cancer Center, Unit 1954, 1515 Holcombe Blvd, Houston, TX 77030, USA
| | - S T Arold
- Division of Biological and Environmental Sciences and Engineering, CBRC, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - J E Ladbury
- School of Molecular and Cellular Biology, University of Leeds, LC Miall Building, Leeds, LS2 9JT, UK.
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Chan CW, Yu CW, Lin CC, Lee CH. Hepatic Portal Venous Gas in a Patient with Penetrating Injuries. HONG KONG J EMERG ME 2017. [DOI: 10.1177/102490791302000608] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Hepatic portal venous gas (HPVG) refers to the branching area of low attenuation extending to within 2 cm of the liver capsule in computed tomography scan. The most common causes of HPVG are mesenteric ischaemia in adults and necrotising enterocolitis in infants. HPVG in trauma patients is mostly reported in cases of blunt abdominal trauma. We present a deceased patient who had chest and abdominal wall penetrating injuries with concomitant hypovolemic shock. A computed tomography scan revealed HPVG and pulmonary artery air emboli. The mechanism of the presentation of HPVG in this patient and the possible cause of death would be discussed. (Hong Kong j.emerg.med. 2013;20:382-384)
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Affiliation(s)
- CW Chan
- Chang Gung Memorial Hospital, Department of Emergency Medicine, Taoyuan, Taiwan
| | - CW Yu
- Chang Gung Memorial Hospital, Department of Emergency Medicine, Keelung, Taiwan
| | - CC Lin
- Chang Gung Memorial Hospital, Department of Emergency Medicine, Taoyuan, Taiwan
| | - CH Lee
- Chang Gung Memorial Hospital, Department of Emergency Medicine, Keelung, Taiwan
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Lin CC, Lu CH, Pan YH, Jiao L, Chen HY, Li L, He Y. [Effect and mechanism of silibinin on the inhibition of ALK positive NSCLC cells by sensitizing crizotinib]. Zhonghua Zhong Liu Za Zhi 2017; 39:650-656. [PMID: 28926892 DOI: 10.3760/cma.j.issn.0253-3766.2017.09.003] [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] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the synergistic effect of silibinin combined with crizotinib on anaplastic lymphoma kinase positive (ALK+ ) non-small cell lung cancer (NSCLC) cells and its mechanism. Methods: H2228 and H3122 cells were treated with silibinin, crizotinib alone or in combination. Cell proliferation was measured by 3-(4, 5-Dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assay and colony formation assay. Migration or invasion ability was tested by wound healing assay or transwell assay, respectively. Expressions of E-Cadherin and vimentin protein were examined by immunofluorescence staining. The protein expressions of ALK, p-ALK, E-Cadherin and Vimentin were detected by western blotting.The anti-cancer effect of silibinin combined with crizotinib in vivo was determined by subcutaneously injecting 2×10(6) H2228 cells into immunodeficient nude mice. Results: The result of MTT assay showed that the cell viability of H2228 or H3122 treated with 100 μmol/L silibinin was (88.38±4.10)% or (72.27±3.62)%, respectively, marginally decreased compared with that of the control. The 50% inhibitory concentration (IC(50)) of H2228 cells treated with crizotinib alone or combined with 100 μmol/L silibinin was (917.10±7.75) nmol/L or (238.73±7.67) nmol/L, respectively. The IC(50) of H3122 cells treated with crizotinib alone or combined with 100 μmol/L silibinin was (472.50±15.70) nmol/L or (206.10±12.01) nmol/L, respectively. The IC(50s) of H2228 and H3122 cells were significantly decreased by combined treatment of crizotinib and silibinin compared to crizotinib treatment alone (P<0.01). When compared with the control group, colony forming ratios of H2228 cells were (83.34±2.72)% in 100 μmol/L silibinin treatment group, (69.42±3.06)% in 400 nmol/L crizotinib treatment group and (27.32±1.42)% in combined treatment group. When compared with the control group, colony forming ratios of H3122 cells were (84.45±5.67)% in 100 μmol/L silibinin treatment group, (45.02±5.83)% in 400 nmol/L crizotinib treatment group and (17.43±3.83)% in combined treatment group. Silibinin combined with crizotinib treatment significantly inhibited the colony formation ability of H2228 and H3122 cells (P<0.01). Migration and invasion results showed that combined treatment of crizotinib and silibinin markedly inhibited the migration and invasion ability of H2228 cells (P<0.01). Western blot results indicated that treated with silibinin alone or in combination of crozitinib for 48 hours, the protein level of E-cadherin in H2228 cells was upregulated, while the expressions of p-ALK and vimentin were downregulated, without obvious alteration of ALK protein expression. In the xenograft model, the mean tumor weight was (9.40±2.58)g in crizotinib treatment group and (4.58±1.07)g in the combined treatment group. The inhibitory effect of tumor growth in vivo of combined treatment was significantly superior to that of crizotinib treatment alone (P<0.05). Conclusion: Silibinin enhances the inhibitory effect of crizotinib on ALK positive NSCLC cells, which may be associated with suppression of ALK activity and mesenchymal-epithelial transition.
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Affiliation(s)
- C C Lin
- Department of Respiratory, Daping Hospital, the Third Military Medical University, Chongqing 400042, China
| | - C H Lu
- Department of Respiratory, Daping Hospital, the Third Military Medical University, Chongqing 400042, China
| | - Y H Pan
- Department of Respiratory, Daping Hospital, the Third Military Medical University, Chongqing 400042, China
| | - L Jiao
- Department of Respiratory, Daping Hospital, the Third Military Medical University, Chongqing 400042, China
| | - H Y Chen
- Department of Respiratory, Daping Hospital, the Third Military Medical University, Chongqing 400042, China
| | - L Li
- Department of Respiratory, Daping Hospital, the Third Military Medical University, Chongqing 400042, China
| | - Y He
- Department of Respiratory, Daping Hospital, the Third Military Medical University, Chongqing 400042, China
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Hung YC, Lin CC, Chen HJ, Chang MP, Huang KC, Chen YH, Chen CC. Severe hypoglycemia and hip fracture in patients with type 2 diabetes: a nationwide population-based cohort study. Osteoporos Int 2017; 28:2053-2060. [PMID: 28374044 DOI: 10.1007/s00198-017-4021-4] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 03/27/2017] [Indexed: 02/01/2023]
Abstract
UNLABELLED Hypoglycemia is a major concern in glycemic control. Using the Taiwan National Health Insurance Research Database, we found that the risk of hip fracture was associated with emergency or hospitalization visits of severe hypoglycemia in patients with type 2 diabetes; greater visits were associated with higher incidence of hip fracture. INTRODUCTION The objective of the study was to assess the risk of hip fracture among patients with type 2 diabetes mellitus (T2DM) and severe hypoglycemia. METHODS Using the National Health Insurance Research database in Taiwan, we identified 2588 patients with T2DM who had developed severe hypoglycemia from 2001 to 2009. A comparison cohort who had never developed severe hypoglycemia was frequency matched at a ratio of approximately 1:2. Multivariate Cox proportional hazard regression analysis was used to evaluate the risk of hip fracture. RESULTS During a median follow-up period of 3.9 years, there were 219 hip fracture events in 5173 comparison cohorts and 148 hip fracture events in 2588 hypoglycemia cohorts. The incidence of hip fracture was higher in patients with severe hypoglycemia than without severe hypoglycemia (17.19 vs. 8.83 per 1000 person-years; adjusted HR 1.71, 95% CI = 1.35-2.16). Approximately half of the individuals developed hip fracture within 2 years from the first occurrence of severe hypoglycemia. There was a significant associated trend towards increased hip fracture risk with increasing average visit of severe hypoglycemia per year (p for trend <0.001). Medication analysis showed that patients taking sulfonylurea alone, insulin alone, and insulin secretagogues combined with insulin had a higher associated risk to develop hip fracture. CONCLUSIONS Severe hypoglycemia was associated with a higher risk to develop hip fracture. The more the visits of severe hypoglycemia per year indicated the higher associated risk in patients with T2DM. Fall is likely an important reason for severe hypoglycemia in relation to increased risk of hip fracture.
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Affiliation(s)
- Y C Hung
- Division of Endocrinology and Metabolism, Department of Medicine, China Medical University Hospital, 2, Yuh-Der Road, Taichung, 40447, Taiwan
- Department of Medicine, China Medical University, Taichung, 40402, Taiwan
| | - C C Lin
- Management Office for Health Data, China Medical University Hospital, Taichung, 40447, Taiwan
- Veterans General Hospital, Taichung, Taiwan
| | - H J Chen
- Management Office for Health Data, China Medical University Hospital, Taichung, 40447, Taiwan
| | - M P Chang
- Department of Nursing, School of Health, National Taichung University of Science and Technology, Taichung, 40343, Taiwan
| | - K C Huang
- Department of Integration of Traditional Chinese and Western Medicine, China Medical University Hospital, Taichung, 40447, Taiwan
- School of Chinese Medicine, China Medical University, Taichung, 40402, Taiwan
| | - Y H Chen
- Division of Endocrinology and Metabolism, Department of Medicine, China Medical University Hospital, 2, Yuh-Der Road, Taichung, 40447, Taiwan
- Department of Medicine, China Medical University, Taichung, 40402, Taiwan
| | - C C Chen
- Division of Endocrinology and Metabolism, Department of Medicine, China Medical University Hospital, 2, Yuh-Der Road, Taichung, 40447, Taiwan.
- School of Chinese Medicine, China Medical University, Taichung, 40402, Taiwan.
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Zhang X, Lin CC, Chan WKN, Liu KL, Yang ZJ, Zhang HQ. Augmented Anticancer Effects of Cantharidin with Liposomal Encapsulation: In Vitro and In Vivo Evaluation. Molecules 2017; 22:molecules22071052. [PMID: 28672816 PMCID: PMC6152072 DOI: 10.3390/molecules22071052] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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: 05/16/2017] [Revised: 06/20/2017] [Accepted: 06/21/2017] [Indexed: 01/10/2023] Open
Abstract
PEGylated liposomes have received much attention as pharmaceutical carriers to deliver chemotherapeutic agents for therapeutic purpose. The aim of this study was to prepare and characterize PEGylated liposome of cantharidin and investigate its therapeutic effect on human hepatocellular carcinoma treatment in vitro and in vivo. Liposomal cantharidin was evaluated for their anticancer effects in vitro using human hepatocellular carcinoma HepG2 cells and in vivo using HepG2-bearing nude mice compared to free drug. PEGylated liposome of cantharidin had a particle size of 129.9 nm and a high encapsulation efficacy of approximately 88.9%. The liposomal cantharidin had a higher anti-proliferative effect vis-à-vis free cantharidin in inducing G2/M cell cycle arrest and apoptosis. Liposomal cantharidin killed more HepG2 cancer cells at the same concentration equivalent to free cantharidin. Further study in vivo also showed that liposomal cantharidin achieved a higher tumor growth inhibition efficacy than free drug on hepatocellular carcinoma. As our study exhibited enhanced cytotoxicity against HepG2 cells and augmented tumor inhibitory effects in vivo, the results validate the potential value of cantharidin-liposome in improving the therapeutic efficacy of cantharidin for liver cancer.
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Affiliation(s)
- Xue Zhang
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China.
| | - Cong-Cong Lin
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China.
| | | | - Kang-Lun Liu
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China.
| | - Zhi-Jun Yang
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China.
- Changshu Research Institute, Hong Kong Baptist University, Changshu Economic and Technological Development (CETD) Zone, Changshu 215500, China.
| | - Hong-Qi Zhang
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China.
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Emmakah AM, Arman HE, Bragg JC, Greene T, Alvarez MB, Childress PJ, Goebel WS, Kacena MA, Lin CC, Chu TM. A fast-degrading thiol–acrylate based hydrogel for cranial regeneration. Biomed Mater 2017; 12:025011. [DOI: 10.1088/1748-605x/aa5f3e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Huang PH, Shih BF, Tsai YF, Chung PCH, Liu FC, Yu HP, Lee WC, Chang CJ, Lin CC. Accuracy and Trending of Continuous Noninvasive Hemoglobin Monitoring in Patients Undergoing Liver Transplantation. Transplant Proc 2017; 48:1067-70. [PMID: 27320558 DOI: 10.1016/j.transproceed.2015.12.121] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Accepted: 12/30/2015] [Indexed: 01/05/2023]
Abstract
BACKGROUND Shift in large fluid volumes and massive blood loss during liver transplantation frequently leads to rapid changes in hemoglobin (Hb) concentration; thus, to ensure adequate tissue oxygenation, accurate and rapid determination of Hb concentration is essential in transplant recipients. The Radical-7 Pulse CO-Oximeter provides a noninvasive and continuous way to monitor Hb concentration (SpHb) in real time and is an ideal candidate for use during liver transplantation. In this study, we assessed the relationship between SpHb and total Hb (tHb) obtained from arterial blood samples during surgery. METHODS Forty patients undergoing liver transplantation were enrolled in this study. tHb and time-matched SpHb were measured at 5 different phases throughout surgery. Paired SpHb and tHb levels were assessed using linear regression, Bland-Altman analysis, and the Critchley polar plot method. RESULTS A total of 161 paired measurements with sufficient signal quality were analyzed. The correlation between SpHb and tHb was 0.59 (P < .001). Bland-Altman analysis revealed that a bias between SpHb and tHb was 2.28 g/dL, and limits of agreement (LoA) were from -0.78 to 5.34 g/dL. Trending analysis showed that 87% of data were located within the acceptable trending area, indicating that the trending ability was not satisfied. CONCLUSIONS The Radical-7 Pulse CO-Oximeter was not sufficient to monitor Hb levels and trends during liver transplantation surgery in our cohort. In particular, in critical patients and in those with low Hb levels, invasive Hb measurement should be used for assessment.
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Affiliation(s)
- P H Huang
- Department of Anesthesiology, Chang Gung Memorial Hospital, Guishan, Taoyuan, Taiwan
| | - B F Shih
- Department of Anesthesiology, Chang Gung Memorial Hospital, Guishan, Taoyuan, Taiwan
| | - Y-F Tsai
- Department of Anesthesiology, Chang Gung Memorial Hospital, Guishan, Taoyuan, Taiwan; College of Medicine, Chang Gung University, Guishan, Taoyuan, Taiwan
| | - P C H Chung
- Department of Anesthesiology, Chang Gung Memorial Hospital, Guishan, Taoyuan, Taiwan; College of Medicine, Chang Gung University, Guishan, Taoyuan, Taiwan
| | - F C Liu
- Department of Anesthesiology, Chang Gung Memorial Hospital, Guishan, Taoyuan, Taiwan; College of Medicine, Chang Gung University, Guishan, Taoyuan, Taiwan
| | - H P Yu
- Department of Anesthesiology, Chang Gung Memorial Hospital, Guishan, Taoyuan, Taiwan; College of Medicine, Chang Gung University, Guishan, Taoyuan, Taiwan
| | - W C Lee
- College of Medicine, Chang Gung University, Guishan, Taoyuan, Taiwan; Department of General Surgery, Chang Gung Memorial Hospital, Guishan, Taoyuan, Taiwan
| | - C J Chang
- Clinical Informatics and Medical Statistics Research Center, Chang Gung University, Guishan, Taoyuan, Taiwan; Biostatistical Center for Clinical Research, Chang Gung Memorial Hospital, Guishan, Taoyuan, Taiwan
| | - C C Lin
- Department of Anesthesiology, Chang Gung Memorial Hospital, Guishan, Taoyuan, Taiwan; College of Medicine, Chang Gung University, Guishan, Taoyuan, Taiwan.
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van Essen TH, van Zijl L, Possemiers T, Mulder AA, Zwart SJ, Chou CH, Lin CC, Lai HJ, Luyten GPM, Tassignon MJ, Zakaria N, El Ghalbzouri A, Jager MJ. Biocompatibility of a fish scale-derived artificial cornea: Cytotoxicity, cellular adhesion and phenotype, and in vivo immunogenicity. Biomaterials 2015; 81:36-45. [PMID: 26717247 DOI: 10.1016/j.biomaterials.2015.11.015] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [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: 11/04/2015] [Accepted: 11/06/2015] [Indexed: 01/30/2023]
Abstract
PURPOSE To determine whether a fish scale-derived collagen matrix (FSCM) meets the basic criteria to serve as an artificial cornea, as determined with in vitro and in vivo tests. METHODS Primary corneal epithelial and stromal cells were obtained from human donor corneas and used to examine the (in)direct cytotoxicity effects of the scaffold. Cytotoxicity was assessed by an MTT assay, while cellular proliferation, corneal cell phenotype and adhesion markers were assessed using an EdU-assay and immunofluorescence. For in vivo-testing, FSCMs were implanted subcutaneously in rats. Ologen(®) Collagen Matrices were used as controls. A second implant was implanted as an immunological challenge. The FSCM was implanted in a corneal pocket of seven New Zealand White rabbits, and compared to sham surgery. RESULTS The FSCM was used as a scaffold to grow corneal epithelial and stromal cells, and displayed no cytotoxicity to these cells. Corneal epithelial cells displayed their normal phenotypical markers (CK3/12 and E-cadherin), as well as cell-matrix adhesion molecules: integrin-α6 and β4, laminin 332, and hemi-desmosomes. Corneal stromal cells similarly expressed adhesion molecules (integrin-α6 and β1). A subcutaneous implant of the FSCM in rats did not induce inflammation or sensitization; the response was comparable to the response against the Ologen(®) Collagen Matrix. Implantation of the FSCM in a corneal stromal pocket in rabbits led to a transparent cornea, healthy epithelium, and, on histology, hardly any infiltrating immune cells. CONCLUSION The FSCM allows excellent cell growth, is not immunogenic and is well-tolerated in the cornea, and thus meets the basic criteria to serve as a scaffold to reconstitute the cornea.
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Affiliation(s)
- T H van Essen
- Department of Ophthalmology, J3-S, Leiden University Medical Center, PO Box 9600, 2300 RC Leiden, The Netherlands.
| | - L van Zijl
- Department of Research, Aeon Astron Europe B.V., J.H. Oortweg 19, 2333 CH, Leiden, The Netherlands.
| | - T Possemiers
- Department of Ophthalmology, Antwerp University Hospital, Wilrijkstraat 10, 2650 Edegem, Belgium.
| | - A A Mulder
- Department of Molecular Cell-biology, Leiden University Medical Center, PO Box 9600, 2300 RC Leiden, The Netherlands.
| | - S J Zwart
- Department of Research, Aeon Astron Europe B.V., J.H. Oortweg 19, 2333 CH, Leiden, The Netherlands.
| | - C-H Chou
- Department of Research, Body Organ Biomedical Corporation, 5F, No. 153, Section 3, Xinyi Road, Da'an District, Taipei City 106, Taiwan, ROC.
| | - C C Lin
- Department of Research, Body Organ Biomedical Corporation, 5F, No. 153, Section 3, Xinyi Road, Da'an District, Taipei City 106, Taiwan, ROC.
| | - H J Lai
- Department of Research, Aeon Astron Europe B.V., J.H. Oortweg 19, 2333 CH, Leiden, The Netherlands.
| | - G P M Luyten
- Department of Ophthalmology, J3-S, Leiden University Medical Center, PO Box 9600, 2300 RC Leiden, The Netherlands.
| | - M J Tassignon
- Department of Ophthalmology, Antwerp University Hospital, Wilrijkstraat 10, 2650 Edegem, Belgium.
| | - N Zakaria
- Department of Ophthalmology, Antwerp University Hospital, Wilrijkstraat 10, 2650 Edegem, Belgium; University of Antwerp, Prinsstraat 13, 2000 Antwerpen, Belgium.
| | - A El Ghalbzouri
- Department of Molecular Cell-biology, Leiden University Medical Center, PO Box 9600, 2300 RC Leiden, The Netherlands.
| | - M J Jager
- Department of Ophthalmology, J3-S, Leiden University Medical Center, PO Box 9600, 2300 RC Leiden, The Netherlands.
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Klatt BN, Carender WJ, Lin CC, Alsubaie SF, Kinnaird CR, Sienko KH, Whitney SL. A Conceptual Framework for the Progression of Balance Exercises in Persons with Balance and Vestibular Disorders. Phys Med Rehabil Int 2015; 2:1044. [PMID: 27489886 PMCID: PMC4968039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
There is little information in peer-reviewed literature to specifically guide the choice of exercise for persons with balance and vestibular disorders. The purpose of this study is to provide a rationale for the establishment of a progression framework and propose a logical sequence in progressing balance exercises for persons with vestibular disorders. Our preliminary conceptual framework was developed by a multidisciplinary team of physical therapists and engineers with extensive experience with people with vestibular disorders. Balance exercises are grouped into six different categories: static standing, compliant surface, weight shifting, modified center of gravity, gait, and vestibulo-ocular reflex (VOR). Through a systematized literature review, interviews and focus group discussions with physical therapists and postural control experts, and pilot studies involving repeated trials of each exercise, exercise progressions for each category were developed and ranked in order of degree of difficulty. Clinical expertise and experience guided decision making for the exercise progressions. Hundreds of exercise combinations were discussed and research is ongoing to validate the hypothesized rankings. The six exercise categories can be incorporated into a balance training program and the framework for exercise progression can be used to guide less experienced practitioners in the development of a balance program. It may also assist clinicians and researchers to design, develop, and progress interventions within a treatment plan of care, or within clinical trials. A structured exercise framework has the potential to maximize postural control, decrease symptoms of dizziness/visual vertigo, and provide "rules" for exercise progression for persons with vestibular disorders. The conceptual framework may also be applicable to persons with other balance-related issues.
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Affiliation(s)
- BN Klatt
- Department of Physical Therapy, University of Pittsburgh, USA
| | - WJ Carender
- Department of Otolaryngology, University of Michigan Health System, USA
| | - CC Lin
- Department of Physical Therapy, University of Pittsburgh, USA
| | - SF Alsubaie
- Department of Physical Therapy, University of Pittsburgh, USA
| | - CR Kinnaird
- Department of Mechanical Engineering, University of Michigan, USA
| | - KH Sienko
- Department of Mechanical Engineering, University of Michigan, USA
- Department of Biomedical Engineering, University of Michigan, USA
| | - SL Whitney
- Department of Physical Therapy, University of Pittsburgh, USA
- Rehabilitation Research Chair, Department of Rehabilitation Sciences, King Saud University, Saudi Arabia
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Abstract
AIM To evaluate whether aspirin can reduce the risk of colorectal cancer in people with diabetes. METHODS We studied ≥ 30-year-old people with diabetes, included in the Longitudinal Health Insurance Database 2005 in Taiwan, who were treated with hypoglycaemic drugs. We used a time-varying Cox regression model to adjust for immortal time bias and to estimate the adjusted hazard ratio and 95% CI for the association between aspirin use and colorectal cancer occurrence. RESULTS We studied a total of 60 828 people with diabetes (31 176 men and 29 652 women). Their mean (sd) age was 58.72 (13.33) years. A total of 26 494 people were taking aspirin. Aspirin use 3-5 times/week (moderate frequency) for > 5 years (long duration) was found to reduce the risk of colorectal cancer by 46% (hazard ratio 0.54, 95% CI 0.34-0.86). Aspirin use > 5 times/week (high frequency) for 4-5 years (moderate duration) and > 5 years reduced the risk of colorectal cancer by 56 and 68%, respectively (hazard ratio 0.44, 95% CI 0.24-0.80; hazard ratio 0.32, 95% CI 0.20-0.50). Low frequency (≤ 2 times/week) and/or short duration (≤ 3 years) of aspirin use did not reduce the risk of colorectal cancer. CONCLUSIONS Aspirin use with high frequency and long duration reduced the risk of colorectal cancer in people with diabetes in a frequency- and duration-dependent manner, whereas low frequency and/or short duration of aspirin use did not. The dosage, frequency and duration of aspirin use that are sufficient to prevent the incidence of colorectal cancer in people with diabetes require further study.
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Affiliation(s)
- C C Lin
- Department of Family Medicine, Wan Fang Hospital, Taipei Medical University, Taipei; Graduate Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei
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Zheng ZY, Jiang Y, Zhan XB, Ma LW, Wu JR, Zhang LM, Lin CC. An increase of curdlan productivity by integration of carbon/nitrogen sources control and sequencing dual fed-batch fermentors operation. ACTA ACUST UNITED AC 2014; 50:44-51. [PMID: 25272751 DOI: 10.7868/s0555109914010152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Curdlan is produced by Agrobacterium sp. ATCC 31749 under nitrogen-limited conditions not associated with cell growth. A novel curdlan production process was developed based on the different nutrient requirements for microbial cell growth and its efficiency was increased by integrating carbon/nitrogen sources control and sequencing dual fed-batch fermentors operation. By feeding ammonium solution to supply abundant nitrogen source and controlling pH in Fermentor I, cell growth was accelerated. High cell density of 29 g/L was attained. The culture broth in Fermentor I was then inoculated into sequencing Fermentor II which alleviated the high requirement for dissolved oxygen and accumulation of inhibitory metabolic by-products during curdlan production. Fermentor I promoted cell growth. Curdlan production started instantaneously in Fermentor II. By feeding nutrient solution with high carbon/nitrogen ratio and NaOH solution for pH adjustment, a feasible and optimal curdlan production process was formulated. The productivity, conversion efficiency and curdlan yield were achieved of 0.98 g/(L h), 57% (w) and 67 g/L, respectively. Such novel process can be scaled up for significant cost reduction at the industrial level.
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Jeng KS, Chu SH, Huang CC, Lin CK, Lin CC, Chen KH. Loss of speech after living-related donor liver transplantation: detection of the lesion by diffusion tensor image. Transplant Proc 2014; 46:880-2. [PMID: 24767371 DOI: 10.1016/j.transproceed.2013.11.097] [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] [Received: 10/01/2013] [Accepted: 11/22/2013] [Indexed: 11/17/2022]
Abstract
INTRODUCTION Loss of speech after living-related liver transplantation is uncommon. Either immunosuppressive agents, related sequelae, or a neurological event may cause it. CASE REPORT A 46-year-old man developed dysarthria and dysphagia on the 10th day after living-related donor liver transplantation for alcoholic cirrhosis with Child-Pugh class C. Brain magnetic resonance images and electroencephalograms could not detect any lesion, but the diffusion tensor image showed a subacute lacunar infarction at right midbrain. The patient's speech improved 1 month after rehabilitation. CONCLUSIONS Some unexpected neurological events, such as loss of speech, may occur after liver transplantation. The differential diagnosis becomes very important before active treatment. Magnetic resonance imaging supplemented with diffusion tensor imaging is an effective imaging study in establishing the diagnosis.
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Affiliation(s)
- K S Jeng
- Department of Surgery, Far Eastern Memorial Hospital, Taipei, Taiwan.
| | - S H Chu
- Department of Surgery, Far Eastern Memorial Hospital, Taipei, Taiwan
| | - C C Huang
- Department of Radiology, Far Eastern Memorial Hospital, Taipei, Taiwan
| | - C K Lin
- Division of Gastroenterology, Far Eastern Memorial Hospital, Taipei, Taiwan
| | - C C Lin
- Division of Gastroenterology, Far Eastern Memorial Hospital, Taipei, Taiwan
| | - K H Chen
- Department of Surgery, Far Eastern Memorial Hospital, Taipei, Taiwan
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Affiliation(s)
- Y C Chen
- Division of Gastroenterology, Department of Internal Medicine, Chung Shan Medical University Hospital, Taichung, Taiwan
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Chen YT, Yang WC, Chen TW, Lin CC. Trichosporon mucoides peritonitis in a continuous ambulatory peritoneal dialysis patient. Perit Dial Int 2014; 33:341-2. [PMID: 23660618 DOI: 10.3747/pdi.2012.00146] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Lin TN, Huang LT, Shu GW, Yuan CT, Shen JL, Lin CAJ, Chang WH, Chiu CH, Lin DW, Lin CC, Kuo HC. Distance dependence of energy transfer from InGaN quantum wells to graphene oxide. Opt Lett 2013; 38:2897-2899. [PMID: 23903173 DOI: 10.1364/ol.38.002897] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We report the distance-dependent energy transfer from an InGaN quantum well to graphene oxide (GO) by time-resolved photoluminescence (PL). A pronounced shortening of the PL decay time in the InGaN quantum well was observed when interacting with GO. The nature of the energy-transfer process has been analyzed, and we find the energy-transfer efficiency depends on the 1/d² separation distance, which is dominated by the layer-to-layer dipole coupling.
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Affiliation(s)
- T N Lin
- Department of Physics and Institute of Biomedical Technology, Chung Yuan Christian University, Chung-Li, Taiwan
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Chaou CH, Lin CC, Chen HY, Lee CH, Chen THH. Chlorpyrifos is associated with slower serum cholinesterase recovery in acute organophosphate-poisoned patients. Clin Toxicol (Phila) 2013; 51:402-8. [PMID: 23590812 DOI: 10.3109/15563650.2013.782035] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
PURPOSE Organophosphate poisoning (OPP) accounts for 200,000 deaths annually in developing countries. Serum cholinesterase (SChE) is of diagnostic value in patients with OPP and is checked repeatedly during the course of treatment. This study aimed to investigate the recovery pattern in patients with OPP using linear mixed models. METHODS Using a retrospective cohort study design, we included 212 adult OPP patients who had visited the emergency department (ED) in a tertiary medical center between 2000 and 2010. One hundred and thirty-one patients were available for analysis, as 81 patients did not meet the criteria and were excluded. Information regarding basic personal characteristics, initial vital signs and severity scores, laboratory data, type and amount of organophosphate ingested, treatment, and serial SChE values was collected. A random coefficient model with a random intercept and a random slope of time were added to address the dynamic relationships of SChE with time and other associated factors. RESULTS The initial SChE activity and recovery rates varied among patients with OPP. The type of organophosphate, the first SChE activity, and the initial APACHE II score were significantly related to the SChE recovery trend. Chlorpyrifos and methamidophos had significantly slower and faster SChE recovery rates, respectively, than other organophosphates. Sex, dose of Pralidoxim (2-PAM), and delay in obtaining medical assistance did not significantly affect SChE recovery. CONCLUSIONS This study demonstrated the pattern and associated correlates of SChE activity recovery in patients with acute OPP. Chlorpyrifos appeared to have a slower SChE activity recovery rate than other organophosphates.
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Affiliation(s)
- C H Chaou
- Department of Emergency Medicine, Chang Gung Memorial Hospital and Chang Gung University College of Medicine , Taoyuan , Taiwan
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Lin CC, Lin CC, Lin HJ, Chen KT. Capnography: An Accurate Method to Assess the Position of the Feeding Tube in a Porcine Model. HONG KONG J EMERG ME 2013. [DOI: 10.1177/102490791302000202] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Objective To test the accuracy of capnography in the differential placement of feeding tubes into the trachea versus the oesophagus. Method Nineteen pigs were anesthetised, and feeding tubes were placed into their tracheas and oesophagi. A naïve examiner attached a capnography to the tube and evaluated the presence or absence of flow waveforms on the capnography. In the next step experiment, we gave 20 intentional oesophageal ventilations to the animals to create a distended stomach. The feeding tubes were reinserted, and examined by a naïve examiner by capnography. Results Capnography demonstrated continuous flow waveforms for the feeding tubes placed in the tracheas, but no waveforms were observed for those placed in the oesophagi. In the next step experiment, we found the same results. Conclusion Capnography can be used to accurately determine the placement of tracheal versus oesophageal feeding tubes based on the presence or absence of flow waveforms.
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Affiliation(s)
- CC Lin
- Chi-Mei Hospital, Department of Nursing, Chiali, Tainan, Taiwan
| | - CC Lin
- Chi-Mei Medical Center, Department of Medical Research, Tainan, Taiwan
| | - HJ Lin
- Southern Tainan University of Technology, Department of Biotechnology, Tainan, Taiwan
| | - KT Chen
- Taipei Medical University, Department of Emergency Medicine, Taipei, Taiwan
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Peng JJ, Lin CC, Li J, Zhu ZH, Yang XG, Pan WS. [Intestinal absorption kinetics of flurbiprofen in rats]. Yao Xue Xue Bao 2013; 48:423-427. [PMID: 23724659] [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: 06/02/2023]
Abstract
To study the in situ intestinal absorption kinetics of flrubiprofen in rats, the absorption of flurbiprofen in small intestine (duodenum, jejunum and ileum) and colon of rats was investigated using in situ single-pass perfusion method and the drug content was measured by HPLC. The effects of drug concentration on the intestinal absorption were investigated. The K(a) and P(app) values of flurbiprofen in the small intestine and colon had no significant difference (P > 0.05). Drug concentration (4.0, 10.0 and 16.0 mg x L(-1)) had no significant influence on the K(a) values (P > 0.05). However, when concentration was 4.0 mg x L(-1) and 10.0 mg x L(-1), significant effect on the P(app) values (P < 0.05) was found, but significant effect on the P(app) values was not shown between 10.0 mg x L(-1) and 16.0 mg x L(-1) (P > 0.05). The K(a) and P(app) values of flurbiprofen on the perfusion flow rate had significant difference (P < 0.05). Flurbiprofen could be absorbed at all segments of the intestine in rats and had no special absorption window. The absorption of flurbiprofen complies with the facilitated diffusion in the general intestinal segments, and accompany with the cytopsistransport mechanism probably. The perfusion flow rate had significant effect on the K(a) and P(app).
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Affiliation(s)
- Jun-Jie Peng
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
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Yang HL, Lin HY, Lin CC. Development of an NNV-free larvae rearing system and production of SPR grouper fingerlings. Commun Agric Appl Biol Sci 2013; 78:500. [PMID: 25141752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
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Affiliation(s)
- S F Yang
- Division of Nephrology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
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Su BC, Tsai YF, Cheng CW, Yu HP, Yang MW, Lee WC, Lin CC. Stroke volume variation derived by arterial pulse contour analysis is a good indicator for preload estimation during liver transplantation. Transplant Proc 2012; 44:429-32. [PMID: 22410035 DOI: 10.1016/j.transproceed.2011.12.037] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Accurate determination of preload during liver transplantation is essential. Continuous right ventricular end diastolic volume index (RVEDVI) has been shown to be a better preload indicator during liver transplantation than the filling pressures. However, recent evidence has shown that dynamic variables, in this case stroke volume variation (SVV), are also good indicators of preload responsiveness. In this study, we evaluated the correlation between SVV, which we derived from arterial pulse contour analysis and RVEDVI. METHODS In this study, we looked for possible relationships between SVV obtained through FloTrac/Vigileo monitor, central venous pressure (CVP), pulmonary arterial occlusion pressure (PAOP), and RVEDVI in 30 patients undergoing liver transplantation. Measurements were taken at 11 defined points during different phases across liver transplantation. Each set of measurement was taken during a steady state, which means at least 15 minutes elpased after any changes occured in either the infusion rate of catecholamines or ventilator settings. Pearson's test was used for correlation estimation. RESULTS There was a statistically significant (P<.01) relationship between SVV and RVEDVI with a correlation coefficient of -0.87. The correlations between CVP (r=0.42), PAOA (r=0.46), and RVEDVI were less strong. CONCLUSION We conclude that SVV is a good indicator for preload estimation during liver transplantation. A higher SVV value is associated with a more hypovolemic fluid status.
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Affiliation(s)
- B C Su
- Department of Anesthesia, Chang Gung Memorial Hospital-Linkou, and College of Medicine, Chang Gung University, Kwei-Shan Taoyuan, Taiwan, People's Republic of China
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Chang SC, Hsuan SL, Lin CC, Lee WC, Chien MS, Chen LC, Wu JH, Cheng SJ, Chen CL, Liao JW. Probable Blastomyces dermatitidis infection in a young rat. Vet Pathol 2012; 50:343-6. [PMID: 22711744 DOI: 10.1177/0300985812451624] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
A 21-week-old male untreated control SHR/NCrlNarl rat was found dead during an experiment. Grossly, pulmonary lesions were characterized by multifocal to coalescing firm gray-white nodules randomly scattered on the surface. Microscopically, bronchopneumonia was found with pyogranulomas containing neutrophils, macrophages, and numerous thick-walled yeast cells. Yeast cells, 5 to 25 μm in diameter, with no branching of hyphae were observed by staining with hematoxylin and eosin, Diff-Quik, and periodic acid-Schiff. Furthermore, polymerase chain reaction (PCR) using panfungal and nested PCR primers were used for detection of Blastomyces dermatitidis DNA in the lung tissue. After sequencing and matching with DNA sequences in the GenBank, the sample showed a similarity of 94.6% and 97% to Ajellomyces dermatitidis (B. dermatitidis), respectively. On the basis of these results, probable pulmonary blastomycosis was diagnosed. The origin of the infection in the colony rat is undetermined.
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Affiliation(s)
- S C Chang
- Department of Veterinary Medicine and Veterinary Medical Teaching Hospital, National Chung-Hsing University, Taichung, Taiwan, ROC
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Tsai MT, Yang WC, Lin CC. Continuous ambulatory peritoneal dialysis-related exit-site infections caused by Achromobacter denitrificans and A. xylosoxidans. Perit Dial Int 2012; 32:362-3. [PMID: 22641747 DOI: 10.3747/pdi.2011.00207] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Huang TL, Chen TY, Tsang LL, Ou HY, Yu CY, Wang CC, Wang SH, Lin CC, Liu YW, Yong CC, Chiu KW, Eng HL, Jawan B, Cheng YF, Chen CL. Hemodynamics of portal venous stenosis before and after treatment in pediatric liver transplantation: evaluation with Doppler ultrasound. Transplant Proc 2012; 44:481-3. [PMID: 22410051 DOI: 10.1016/j.transproceed.2012.01.047] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
AIM The aim of this study was to evaluate portal vein stenosis (PVS) in pediatric liver transplantation (PLT) using Doppler ultrasound (DUS) before and after interventional management for hemodynamic changes. MATERIALS AND METHODS From 2000 to 2010, we encountered 11 PVS cases among 180 PLT that were evaluated using DUS and computed tomography (CT) angiography (CTA); all underwent portal stenting. DUS was used to monitor portal hemodynamics. For the diagnosis of PVS, we investigated multiple parameters including stenotic size (SS), stenotic ratio (SR) (SR [%]=PRE-SS/PRE [PRE=stenotic size]), portal flow velocity ratio (VR) (VR=VS/PRE [PRE=velocity at prestenotic site; VS=peak velocity at stenotic site]), spleen size, and platelet count. RESULTS The incidence of PVS was 5.6% (11/180). The PV was 2.5 mm using DUS and 2.7 mm using CTA. The average SR was 65% fitting the criterion. Low prestenotic portal flow<12 cm/sec and high peak velocity in the stenotic segment (up to 147 cm/sec) were observed in 6 cases. The VR value was high at 7.5:1 and there was splenomegaly with thrombocytopenia. After portal vein stenting, hyperperfusion occurred might after reopening the stenosis: the flow increased to an average of 34 cm/sec and then flow decreased slowly to a stable level 2 weeks later. The size of the spleen decreased from 17 to 12 cm and the thrombocytopenia also improved with platelet counts increasing from 67×10(3) to 178×10(3)/μl at 2 months follow-up. The changes in portal flow, portal vein size, spleen size, and platelet count were significant (P<.05). CONCLUSION PVS is diagnosed using DUS by increased intrahepatic PV dilatation, peak flow at the stenotic site, discrepant VR. Early portal stenting showed a better prognosis. DUS is essential and effective for hemodynamic monitoring and management of PVS.
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Affiliation(s)
- T L Huang
- Department of Diagnostic Radiology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
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Yang KT, Lin CC, Chang LY. A program to interest medical students in Changhua, Taiwan in the incorporation of visual arts in medicine. Educ Health (Abingdon) 2011; 24:563. [PMID: 22267351] [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: 05/31/2023]
Abstract
INTRODUCTION Visual arts have been used to facilitate the teaching of the United States Accreditation Council for Graduate Medical Education (ACGME) competencies used in some countries. Some medical students may not appreciate the usefulness of incorporating arts in medical education. Therefore, arts programs that can interest medical students are necessary. We initiated and evaluated a visual arts program at the Changhua Christian Hospital in Changhua, Taiwan, with an aim to give the students a short review of visual arts and to interest them in the incorporation of arts in medicine. METHODS A total of 110 students in clerkship or internship participated in a visual arts program with emphasis on medicine-related visual arts. Content analysis of the data from the notes made by the instructor from direct observation of students; descriptions during discussions and the written feedback from students at the end of the program was used to evaluate the effect of the program. Anonymous questionnaires were also used for self-assessment of students. RESULTS Qualitative analysis of the data revealed that the course was interesting to students. Themes emerged including its helpfulness to students in interpreting paintings, enhanced empathy, increased cultural awareness, enhanced observational skills, better team work, listening and communication skills and reduced stress. Ratings on the questionnaire showed similar results. Moreover, students had an increase in their confidence and desire to interpret paintings. CONCLUSION The structured visual arts program, with emphasis on medicine-related visual arts and other humanities subjects, was able to attract the attention of medical students. It might be helpful to improve the required skills of ACGME competencies, but further studies are needed to support these conclusions.
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Affiliation(s)
- K T Yang
- The Center for Medical Humanities, Changhua Christian Hospital, Changhua, Taiwan.
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Yu LJ, Wu JR, Zheng ZZ, Lin CC, Zhan XB. Changes in gene transcription and protein expression involved in the response of Agrobacterium sp. ATCC 31749 to nitrogen availability during curdlan production. Prikl Biokhim Mikrobiol 2011; 47:537-543. [PMID: 22232894] [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: 05/31/2023]
Abstract
The changes in transcription of genes involved in nitrogen metabolism and curdlan biosynthesis, and total protein expression were firstly analyzed to define the responses of Agrobacterium sp. ATCC 31749 to nitrogen source availability during curdlan fermentation. The transcription of all nitrogen metabolism and regulation genes increased significantly under nitrogen limitation. The genes of carbon (exoC) and nitrogen (ntrB, ntrC, and nifR) metabolism showed distinctive transcriptional responses to nitrogen limitation. Their relative expression level was increased by 14, 9, 7 and 7-fold, respectively. Two-dimentional electrophoresis (2-DE) revealed that the expression of 14 proteins were elevated and 6 proteins were down-regulated significantly under nitrogen starvation. Furthermore, 4 proteins (GroEL, ABC transporter, Atu1730 and enoyl-acyl carrier protein reductase) in which the expression level changed significantly were identified. The results showed that Agrobacterium sp. regulates its carbon flux and nitrogen assimilation effectively for better survival.
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Affiliation(s)
- L J Yu
- School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
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Chen CF, You ZH, Yang WC, Lin CC. Hypokalaemic paralysis with seemingly pH-neutralized blood gas: liquorice-induced mineralocorticoid effect superimposed on renal tubular acidosis. Acta Clin Belg 2011; 66:403. [PMID: 22145284 DOI: 10.2143/acb.66.5.2062602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
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Yang KL, Lee SK, Lin CC, Jiang S, Chiu HM, Lin S, Chen YC, Yang SY, Jian YF, Shyr MH, Lin CL, Lin PY. Discovery of two novel HLA-B alleles, B*46:13:03 and B*15:189, in two Taiwanese volunteer bone marrow donors by sequence-based typing. Int J Immunogenet 2011; 38:539-42. [PMID: 21819546 DOI: 10.1111/j.1744-313x.2011.01030.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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
We report here two novel HLA-B alleles, B*46:13:03 and B*15:189, discovered in two Taiwanese volunteer bone marrow donors. The sequence of B*15:189 has a nucleotide sequence possibly derived from a recombination event between HLA-B*39:01:01 and B*15:01:01:01, while the origin of the sequence B*46:13:03 was less obvious to postulate, considering the low frequency of B*46:13 in the general population and the silent mutations involved. Our report here adds further HLA polymorphism to the growing lists of HLA-B*46 and HLA-B*15 and provides an additional HLA information for donor search programme for patients undergoing transplant.
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Affiliation(s)
- K L Yang
- Laboratory of Immunogenetics, Buddhist Tzu Chi University, Buddhist Compassion Relief Tzu Chi Foundation, Hualien, Taiwan.
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Yang KL, Lee SK, Lin CC, Jiang S, Chiu HM, Lin S, Chen YC, Jian YF, Yang SY, Yang YB, Chen SB, Shyr MH, Lin CL, Lin PY. Oriental HLA-A*11:90 detected in a Taiwanese cord blood sample and the haplotype in association with A*11:90 allele. Int J Immunogenet 2011; 38:543-6. [PMID: 21806781 DOI: 10.1111/j.1744-313x.2011.01031.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [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
We report here an HLA-A allele, A*11:90, found in a Taiwanese cord blood sample using DNA sequence-based typing (SBT) protocol after observing an anomalous reaction pattern in a sequence-specific oligonucleotide (SSO) typing exercise. The sequence of A*11:90 is identical to A*11:01:01, the most predominant A*11 variant in Taiwanese, in exon 2 but differs from A*11:01:01 in exon 3 by two nucleotide substitutions at codon 163 (c.487C>G and c.488G>A), resulting R163E. In comparison with the sequence of A*11:02:01, the second most predominant subtype of A*11 in Taiwanese A*11:90 has one nucleotide difference at codon 19 (c.55A>G) in exon 2 resulting K19E and two nucleotides variations at codon 163 (c.487C>G and c.488G>A) in exon 3 resulting R163E. HLA-A*11:90-B*40:02-DRB1*11:01 is the deduced probable HLA haplotype in association with A*11:90. The generation of A*11:90 is thought to involve a DNA recombination event between alleles A*11:01:01 and A*80:01 where A*80:01 donated a fragment of the DNA sequence (from n.t. 487 to n.t. 497) to the recipient sequence of A*11:01:01.
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Affiliation(s)
- K L Yang
- Buddhist Tzu Chi General Hospital, Buddhist Compassion Relief Tzu Chi Foundation, Hualien, Taiwan.
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Yang KL, Lee SK, Lin CC, Jiang S, Chiu HM, Lin S, Chen YC, Chen SP, Yang SY, Jian YF, Shyr MH, Lin CL, Lin PY. Detection of two HLA-A alleles, A*31:30 and A*26:20, in two Taiwanese volunteer bone marrow donors by sequence-based typing. Int J Immunogenet 2011; 38:437-40. [PMID: 21692992 DOI: 10.1111/j.1744-313x.2011.01023.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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
We here report detection of a novel sequence of HLA-A*31:30 and a confirmatory sequence of HLA*26:20 from two Taiwanese individuals. The sequence of A*31:30 is identical to that of A*31:01:02 in exons 2 and 3, except one nucleotide (n.t.) substitution c.539T > G resulting in p.Leu180Trp. The sequence of A*26:20 is identical to A*26:01:01 in exons 2 and 3, except a segment of the sequence from n.t. 78 to n.t.102. The mismatched sequence segment is identical to a sequence segment of A*02:03:01, suggesting that the formation of A*26:20 was resulted from a DNA recombination event between A*26:01:01 and A*02:03:01 sequences. A*26:20 differs from A*26:01:01 with c.98A > T resulting in p.Tyr33Phe.
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Affiliation(s)
- K L Yang
- Laboratory of Immunogenetics, Tzu Chi Cord Blood Bank and Buddhist Tzu Chi Marrow Donor Registry, Buddhist Tzu Chi Stem Cells Centre, Buddhist Tzu Chi General Hospital, Buddhist Compassion Relief Tzu Chi Foundation, Hualien, Taiwan.
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Shu GW, Lin CC, Lin HT, Lin TN, Shen JL, Chiu CH, Li ZY, Kuo HC, Lin CC, Wang SC, Lin CAJ, Chang WH. Energy transfer from InGaN quantum wells to Au nanoclusters via optical waveguiding. Opt Express 2011; 19 Suppl 2:A194-A200. [PMID: 21445220 DOI: 10.1364/oe.19.00a194] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We present the first observation of resonance energy transfer from InGaN quantum wells to Au nanoclusters via optical waveguiding. Steady-state and time-resolved photoluminescence measurements provide conclusive evidence of resonance energy transfer and obtain an optimum transfer efficiency of ~72%. A set of rate equations is successfully used to model the kinetics of resonance energy transfer.
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Affiliation(s)
- G W Shu
- Department of Physics and Center for Nanotechnology at CYCU, Chung Yuan Christian University, 32023 Chung-Li, Taiwan
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Lin CC, Ezzelarab M, Hara H, Long C, Lin CW, Dorling A, Cooper DKC. Atorvastatin or transgenic expression of TFPI inhibits coagulation initiated by anti-nonGal IgG binding to porcine aortic endothelial cells. J Thromb Haemost 2011. [PMID: 20553382 DOI: 10.1111/j.1538-7836.2010.03950] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
BACKGROUND Intravascular thrombosis remains a barrier to successful xenotransplantation. Tissue factor (TF) expression on porcine aortic endothelial cells (PAECs), which results from their activation by xenoreactive antibodies (Abs) to Galα1,3Gal (Gal) and subsequent complement activation, plays an important role. OBJECTIVES The present study aimed to clarify the role of Abs directed against nonGal antigens in the activation of PAECs to express functional TF and to investigate selected methods of inhibiting TF activity. METHODS PAECs from wild-type (WT), α1,3-galactosyltransferase gene-knockout (GT-KO) pigs, or pigs transgenic for CD46 or tissue factor pathway inhibitor (TFPI), were incubated with naïve baboon serum (BS) or sensitized BS (with high anti-nonGal Ab levels). TF activity of PAECs was assessed. RESULTS Only fresh, but not heat-inactivated (HI), naïve BS activated WT PAECs to express functional TF. Similarly, PAECs from CD46 pigs were resistant to activation by naïve BS, but not to activation by fresh or HI sensitized BS. HI sensitized BS also activated GT-KO PAECs to induce TF activity. TF expression on PAECs induced by anti-nonGal Abs was inhibited if serum was pretreated with (i) an anti-IgG Fab Ab or (ii) atorvastatin, or (iii) when PAECs were transgenic for TFPI. CONCLUSIONS Anti-nonGal IgG Abs activated PAECs to induce TF activity through a complement-independent pathway. This implies that GT-KO pigs expressing a complement-regulatory protein may be insufficient to prevent the activation of PAECs. Genetic modification with an 'anticoagulant' gene (e.g. TFPI) or a therapeutic approach (e.g. atorvastatin) will be required to prevent coagulation dysregulation after pig-to-primate organ transplantation.
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Affiliation(s)
- C C Lin
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA, USA
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Tsai MC, Chen TH, Chang MH, Chen TY, Lin CC. Gallbladder perforation with formation of hepatic subcapsular biloma, treated with endoscopic nasobiliary drainage. Endoscopy 2010; 42 Suppl 2:E206-7. [PMID: 20845274 DOI: 10.1055/s-0030-1255709] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- M C Tsai
- Department of Internal Medicine, Chung Shan Medical University Hospital and Institute of Medicine of Chung Shan Medical University, Taichung, Taiwan
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Lin CC, Ezzelarab M, Hara H, Long C, Lin CW, Dorling A, Cooper DKC. Atorvastatin or transgenic expression of TFPI inhibits coagulation initiated by anti-nonGal IgG binding to porcine aortic endothelial cells. J Thromb Haemost 2010; 8:2001-10. [PMID: 20553382 PMCID: PMC2965779 DOI: 10.1111/j.1538-7836.2010.03950.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Intravascular thrombosis remains a barrier to successful xenotransplantation. Tissue factor (TF) expression on porcine aortic endothelial cells (PAECs), which results from their activation by xenoreactive antibodies (Abs) to Galα1,3Gal (Gal) and subsequent complement activation, plays an important role. OBJECTIVES The present study aimed to clarify the role of Abs directed against nonGal antigens in the activation of PAECs to express functional TF and to investigate selected methods of inhibiting TF activity. METHODS PAECs from wild-type (WT), α1,3-galactosyltransferase gene-knockout (GT-KO) pigs, or pigs transgenic for CD46 or tissue factor pathway inhibitor (TFPI), were incubated with naïve baboon serum (BS) or sensitized BS (with high anti-nonGal Ab levels). TF activity of PAECs was assessed. RESULTS Only fresh, but not heat-inactivated (HI), naïve BS activated WT PAECs to express functional TF. Similarly, PAECs from CD46 pigs were resistant to activation by naïve BS, but not to activation by fresh or HI sensitized BS. HI sensitized BS also activated GT-KO PAECs to induce TF activity. TF expression on PAECs induced by anti-nonGal Abs was inhibited if serum was pretreated with (i) an anti-IgG Fab Ab or (ii) atorvastatin, or (iii) when PAECs were transgenic for TFPI. CONCLUSIONS Anti-nonGal IgG Abs activated PAECs to induce TF activity through a complement-independent pathway. This implies that GT-KO pigs expressing a complement-regulatory protein may be insufficient to prevent the activation of PAECs. Genetic modification with an 'anticoagulant' gene (e.g. TFPI) or a therapeutic approach (e.g. atorvastatin) will be required to prevent coagulation dysregulation after pig-to-primate organ transplantation.
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Affiliation(s)
- C C Lin
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA, USA
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Abstract
The mechanisms for the maintenance and the excitation of trailing spiral modes of density waves in diskshaped galaxies, as proposed by Lin in 1969 and by Mark recently, are substantiated by an analysis of the gas-dynamical model of the galaxy. The self-excitation of the unstable mode in caused by waves propagating outwards from the corotation circle, which carry away angular momentum of a sign opposite to that contained in the wave system inside that circle. Specifically, a simple dispersion relationship is given as a definite integral, which allows the immediate determination of the pattern frequency and the amplification rate, once the basic galactic model is known.
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Affiliation(s)
- Y Y Lau
- Department of Mathematics, Massachusetts Institute of Technology, Cambridge, Mass. 02139
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Bertin G, Lau YY, Lin CC, Mark JW, Sugiyama L. Discrete spiral modes in disk galaxies: Some numerical examples based on density wave theory. Proc Natl Acad Sci U S A 2010; 74:4726-9. [PMID: 16592460 PMCID: PMC432027 DOI: 10.1073/pnas.74.11.4726] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Discrete growing spiral modes are calculated, on the basis of principles of stellar dynamics, according to the recently developed asymptotic theory of density waves for spiral structure in galaxies. From the growth rates obtained, it appears likely that several spiral modes coexist in a given disk galaxy. General properties of these modes are described for two galaxy models, and some of their important observational implications are discussed.
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Affiliation(s)
- G Bertin
- Department of Mathematics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
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Affiliation(s)
- C C Lin
- INSTITUTE FOR ADVANCED STUDY, PRINCETON, NEW JERSEY
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Ekser B, Long C, Echeverri GJ, Hara H, Ezzelarab M, Lin CC, de Vera ME, Wagner R, Klein E, Wolf RF, Ayares D, Cooper DKC, Gridelli B. Impact of thrombocytopenia on survival of baboons with genetically modified pig liver transplants: clinical relevance. Am J Transplant 2010; 10:273-85. [PMID: 20041862 DOI: 10.1111/j.1600-6143.2009.02945.x] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A lack of deceased human donor livers leads to a significant mortality in patients with acute-on-chronic or acute (fulminant) liver failure or with primary nonfunction of an allograft. Genetically engineered pigs could provide livers that might bridge the patient to allotransplantation. Orthotopic liver transplantation in baboons using livers from alpha1,3-galactosyltransferase gene-knockout (GTKO) pigs (n = 2) or from GTKO pigs transgenic for CD46 (n = 8) were carried out with a clinically acceptable immunosuppressive regimen. Six of 10 baboons survived for 4-7 days. In all cases, liver function was adequate, as evidenced by tests of detoxification, protein synthesis, complement activity and coagulation parameters. The major problem that prevented more prolonged survival beyond 7 days was a profound thrombocytopenia that developed within 1 h after reperfusion, ultimately resulting in spontaneous hemorrhage at various sites. We postulate that this is associated with the expression of tissue factor on platelets after contact with pig endothelium, resulting in platelet and platelet-peripheral blood mononuclear cell(s) aggregation and deposition of aggregates in the liver graft, though we were unable to confirm this conclusively. If this problem can be resolved, we would anticipate that a pig liver could provide a period during which a patient in liver failure could be successfully bridged to allotransplantation.
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Affiliation(s)
- B Ekser
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
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Chung CK, Chang HC, Shih TR, Lin SL, Hsiao EJ, Chen YS, Chang EC, Chen CC, Lin CC. Water-assisted CO(2) laser ablated glass and modified thermal bonding for capillary-driven bio-fluidic application. Biomed Microdevices 2009. [PMID: 19830566 DOI: 10.1007/s10544‐009‐9365‐x] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The glass-based microfluidic chip has widely been applied to the lab-on-a-chip for clotting tests. Here, we have demonstrated a capillary driven flow chip using the water-assisted CO(2) laser ablation for crackless fluidic channels and holes as well as the modified low-temperature glass bonding with assistance of adhesive polymer film at 300 degrees Celsius. Effect of water depth on the laser ablation of glass quality was investigated. The surface hydrophilic property of glass and polymer film was measured by static contact angle method for hydrophilicity examination in comparison with the conventional polydimethylsiloxane (PDMS) material. Both low-viscosity deionized water and high-viscosity whole blood were used for testing the capillary-driving flow behavior. The preliminary coagulation testing in the Y-channel chip was also performed using whole blood and CaCl(2) solution. The water-assisted CO(2) laser processing can cool down glass during ablation for less temperature gradient to eliminate the crack. The modified glass bonding can simplify the conventional complex fabrication procedure of glass chips, such as high-temperature bonding, long consuming time and high cost. Moreover, the developed fluidic glass chip has the merit of hydrophilic behavior conquering the problem of traditional hydrophobic recovery of polymer fluidic chips and shows the ability to drive high-viscosity bio-fluids.
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Affiliation(s)
- C K Chung
- Department of Mechanical Engineering, Center for Micro/Nano Science and Technology, National Cheng Kung University, Tainan, Taiwan.
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