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Cheng WL, Liu XR, Zuo Y, Zheng W, Wu SS, Jiang B. [Effect of levothyroxine treatment on pregnancy outcomes in euthyroid women with thyroid autoantibody positive: a Meta-analysis]. Zhonghua Fu Chan Ke Za Zhi 2021; 56:58-63. [PMID: 33486929 DOI: 10.3760/cma.j.cn112141-20200312-00215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To conduct a systematic review of the association of levothyroxine treatment with pregnancy outcomes in euthyroid women who are thyroid autoantibody positive. Methods: Medline, Excerpta Medica (EMBASE), Cochrane Library, China National Knowledge Infrastructure (CNKI), China Biology Medicine (CBM), Wanfang data and VIP database were searched from inception until Jan. 28, 2020. All published randomized controlled trials assessing the association of levothyroxine treatment with pregnancy outcomes in euthyroid women with thyroid autoantibody-positive were included. STATA 11.0 and RevMan 5.3 softwares were used to perform this Meta-analysis. Results: A total of 6 studies met the inclusion criteria, with 2 188 women randomized. Meta-analysis showed that there was no significantly association between miscarriage (OR=0.85, 95%CI: 0.65-1.11, P=0.234) and preterm birth (OR=0.79, 95%CI: 0.54-1.16, P=0.224) with levothyroxine treatment. Conclusions: Levothyroxine therapy could not reduce the risk of miscarriage and preterm birth in euthyroid women with thyroid autoantibody-positive. Therefore, levothyroxine should be used with caution for these pregnant women.
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Affiliation(s)
- W L Cheng
- Obstetrics and Gynecology Clinic and Key Laboratory of Birth Defects and Related Women and Children Diseases, West China Second Hospital of Sichuan University, Chengdu 610041, China
| | - X R Liu
- Obstetrics and Gynecology Clinic and Key Laboratory of Birth Defects and Related Women and Children Diseases, West China Second Hospital of Sichuan University, Chengdu 610041, China
| | - Y Zuo
- Obstetrics and Gynecology Clinic and Key Laboratory of Birth Defects and Related Women and Children Diseases, West China Second Hospital of Sichuan University, Chengdu 610041, China
| | - W Zheng
- Obstetrics and Gynecology Clinic and Key Laboratory of Birth Defects and Related Women and Children Diseases, West China Second Hospital of Sichuan University, Chengdu 610041, China
| | - S S Wu
- Obstetrics and Gynecology Clinic and Key Laboratory of Birth Defects and Related Women and Children Diseases, West China Second Hospital of Sichuan University, Chengdu 610041, China
| | - B Jiang
- Obstetrics and Gynecology Clinic and Key Laboratory of Birth Defects and Related Women and Children Diseases, West China Second Hospital of Sichuan University, Chengdu 610041, China
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Hung WC, Yang CH, Cheng WL, Wu CH. Revisit three "I" model: a novel five "I" model of fracture liaison service. Osteoporos Int 2019; 30:2361-2362. [PMID: 31511913 DOI: 10.1007/s00198-019-05090-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 02/14/2019] [Indexed: 10/26/2022]
Affiliation(s)
- W-C Hung
- Department of Family Medicine, E-Da Hospital/I-Shou University, Kaohsiung, Taiwan
- Institute of Biotechnology and Chemical Engineering, I-Shou University, Kaohsiung, Taiwan
- Medicine for International Student, I-Shou University School, Kaohsiung, Taiwan
| | - C-H Yang
- Departments of Biological Science and Technology, I-Shou University, Kaohsiung, Taiwan.
| | - W-L Cheng
- Department of Family Medicine, E-Da Hospital/I-Shou University, Kaohsiung, Taiwan
| | - C-H Wu
- Department of Family Medicine, National Cheng Kung University Hospital, Tainan, Taiwan.
- Institute of Gerontology, National Cheng Kung University, Tainan, Taiwan.
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He LB, Wang YL, Xie X, Han M, Song FQ, Wang BJ, Cheng WL, Xu HX, Sun LT. Correction: Systematic investigation of the SERS efficiency and SERS hotspots in gas-phase deposited Ag nanoparticle assemblies. Phys Chem Chem Phys 2017; 19:17469. [PMID: 28653071 DOI: 10.1039/c7cp90136d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Correction for 'Systematic investigation of the SERS efficiency and SERS hotspots in gas-phase deposited Ag nanoparticle assemblies' by L. B. He et al., Phys. Chem. Chem. Phys., 2017, 19, 5091-5101.
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Affiliation(s)
- L B He
- SEU-FEI Nano-Pico Centre, Key Lab of MEMS of Ministry of Education, Southeast University, Nanjing 210096, P. R. China.
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Abstract
INTRODUCTION Hepatic haemangiomas are the most common benign liver tumours. They can be treated with surgical resection such as enucleation or hepatectomy if necessary. However, controversy remains over the clinical outcome and safety of these two methods. In this study, we performed a comprehensive meta-analysis to compare the efficacy of liver resection with enucleation for giant haemangiomas. METHODS The online databases PubMed, Embase and CNKI (China National Knowledge Infrastructure) were searched for relevant original articles. We compared operation time, blood loss, transfusion requirements, inflow occlusion time and postoperative complications between enucleation and hepatectomy. RESULTS Seven controlled clinical trials met the predefined inclusion criteria. Analysis indicated that the enucleation group had significantly shorter operation time (weighted mean difference, WMD -28.22, 95% confidence interval, CI, -54.82 to -1.62), less blood loss (WMD -395.92, 95% CI -521.25 to -270.58) and fewer complications (odds ratio, OR, 0.47, 95 % CI 0.34 to 0.65). There were no significant differences between enucleation and hepatectomy with regard to transfusion requirements (OR 0.61, 95% CI 0.22 to 1.68) and inflow occlusion time (WMD 7.91, 95% CI -5.62 to 21.44). CONCLUSIONS Enucleation has advantages over hepatectomy in relation to operation time, blood loss and complications. Enucleation is a safe and effective treatment for giant hepatic haemangioma.
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Affiliation(s)
- W L Cheng
- Department of Vascular Surgery, Wuxi People's Hospital, Nanjing Medical University , Wuxi, Jiangsu Province , China.,Department of Biliary-Pancreatic Surgery, Tongji Hospital, Tongji Medical College, Huazhong, University of Science and Technology, Wuhan, Hubei Province , China
| | - Y Q Qi
- Department of Biliary-Pancreatic Surgery, Tongji Hospital, Tongji Medical College, Huazhong, University of Science and Technology, Wuhan, Hubei Province , China
| | - B Wang
- Department of Biliary-Pancreatic Surgery, Tongji Hospital, Tongji Medical College, Huazhong, University of Science and Technology, Wuhan, Hubei Province , China
| | - L Tian
- Department of Biliary-Pancreatic Surgery, Tongji Hospital, Tongji Medical College, Huazhong, University of Science and Technology, Wuhan, Hubei Province , China
| | - W Huang
- Department of Biliary-Pancreatic Surgery, Tongji Hospital, Tongji Medical College, Huazhong, University of Science and Technology, Wuhan, Hubei Province , China
| | - Y Chen
- Department of Biliary-Pancreatic Surgery, Tongji Hospital, Tongji Medical College, Huazhong, University of Science and Technology, Wuhan, Hubei Province , China
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Su MY, Broadhurst M, Liu CP, Gathercole J, Cheng WL, Qi XY, Clerens S, Dyer JM, Day L, Haigh B. Comparative analysis of human milk and infant formula derived peptides following in vitro digestion. Food Chem 2016; 221:1895-1903. [PMID: 27979178 DOI: 10.1016/j.foodchem.2016.10.041] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Revised: 09/19/2016] [Accepted: 10/10/2016] [Indexed: 11/29/2022]
Abstract
It has long been recognised that there are differences between human milk and infant formulas which lead to differences in health and nutrition for the neonate. In this study we examine and compare the peptide profile of human milk and an exemplar infant formula. The study identifies both similarities and differences in the endogenous and postdigestion peptide profiles of human milk and infant formula. This includes differences in the protein source of these peptides but also with the region within the protein producing the dominant proteins. Clustering of similar peptides around regions of high sequence identity and known bioactivity was also observed. Together the data may explain some of the functional differences between human milk and infant formula, while identifying some aspects of conserved function between bovine and human milks which contribute to the effectiveness of modern infant formula as a substitute for human milk.
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Affiliation(s)
- M-Y Su
- State Key Laboratory of Dairy Biotechnology, Dairy Research Institute, Bright Dairy & Food Co., Ltd., Shanghai, China
| | - M Broadhurst
- AgResearch Ltd, Ruakura Research Centre, Hamilton, New Zealand
| | - C-P Liu
- State Key Laboratory of Dairy Biotechnology, Dairy Research Institute, Bright Dairy & Food Co., Ltd., Shanghai, China
| | - J Gathercole
- AgResearch Ltd, Cnr Springs Road and Gerald Street, Private Bag 4749, Christchurch 8140, New Zealand
| | - W-L Cheng
- State Key Laboratory of Dairy Biotechnology, Dairy Research Institute, Bright Dairy & Food Co., Ltd., Shanghai, China
| | - X-Y Qi
- State Key Laboratory of Dairy Biotechnology, Dairy Research Institute, Bright Dairy & Food Co., Ltd., Shanghai, China
| | - S Clerens
- AgResearch Ltd, Cnr Springs Road and Gerald Street, Private Bag 4749, Christchurch 8140, New Zealand; Biomolecular Interaction Centre, University of Canterbury, Christchurch, New Zealand
| | - J M Dyer
- AgResearch Ltd, Cnr Springs Road and Gerald Street, Private Bag 4749, Christchurch 8140, New Zealand; Biomolecular Interaction Centre, University of Canterbury, Christchurch, New Zealand; Riddet Institute, based at Massey University, Palmerston North, New Zealand; Wine, Food & Molecular Biosciences, Lincoln University, Lincoln, New Zealand
| | - L Day
- AgResearch Ltd, Grasslands Research Centre, Tennent Drive, Palmerston North 4442, New Zealand
| | - B Haigh
- AgResearch Ltd, Ruakura Research Centre, Hamilton, New Zealand.
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Wong WK, Su TW, Cheng WL, Yang HT, Wei WC, Ko PJ. Endovascular Stent Graft Repair is an Effective and Safe Alternative Therapy for Arteriovenous Graft Pseudoaneurysms. Eur J Vasc Endovasc Surg 2016; 52:682-688. [PMID: 27592733 DOI: 10.1016/j.ejvs.2016.07.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [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: 01/07/2016] [Accepted: 07/16/2016] [Indexed: 10/21/2022]
Abstract
OBJECTIVE/BACKGROUND Pseudoaneurysm formation occurs in 2-10% of hemodialysis arteriovenous grafts (AVGs). Surgical repair often requires pseudoaneurysm resection, interposition graft placement, and insertion of a catheter as a bridge. Endovascular stent graft repair is a controversial alternative therapy. This study was performed to examine the effectiveness and mid-term outcomes of stent graft repair for AVG pseudoaneurysms. METHODS All patients who had undergone stent graft repair for AVG pseudoaneurysms between December 2012 and July 2015 were identified from hospital medical records for retrospective analysis. Outcome measures were technical success, early and late complications, and primary and secondary patency rates. RESULTS A total of 37 stent graft repairs of AVG pseudoaneurysms were performed in 35 patients (42.9% men; mean age 66.9 years). The mean time from AVG creation to pseudoaneurysm repair was 69 months. The indications of treatment (as per the institutional policy) were large pseudoaneurysm (56.7%), impending rupture (27.1%), and bleeding (16.2%). Mean pseudoaneurysm diameter was 23.0 mm. The most common diameter and length of stent graft used were 7 mm (67.6%) and 50 mm (48.6%), respectively. Technical success was 100%. Only one early complication occurred after stent graft repair, which was due to recurrence of the pseudoaneurysm as a result of a short landing zone. Late complications included infection (17.1%) and thrombosis (37.1%). The 1, 6, and 12 month primary patency rates were 89.2%, 55.5%, and 22.0%, respectively. The 1, 6, and 12 month secondary patency rates were 100%, 88.6%, and 78.6%, respectively. The median follow up was 12.3 months. CONCLUSIONS The study demonstrates that endovascular stent graft repair is an effective and safe alternative therapy for AVG pseudoaneurysms. However, the rate of thrombosis and infection was high and needs to be balanced against open surgery in future studies.
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Affiliation(s)
- W K Wong
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - T-W Su
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - W-L Cheng
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - H-T Yang
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - W-C Wei
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - P-J Ko
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan.
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Chen YJ, Xiong XF, Wen SQ, Tian L, Cheng WL, Qi YQ. Expression and clinical significance of PIWIL2 in hilar cholangiocarcinoma tissues and cell lines. Genet Mol Res 2015; 14:7053-61. [PMID: 26125915 DOI: 10.4238/2015.june.26.15] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The objective of this study was to explore the relationship between PIWI-like protein 2 (PIWIL2) and clinicopathological charac-teristics and prognosis after radical resection. To accomplish this, we analyzed PIWIL2 expression in hilar cholangiocarcinoma tissues and cell lines. PIWIL2 expression was detected by immunohistochemistry in 41 hilar cholangiocarcinoma samples and 10 control tissues. Western blotting and immunocytofluorescence were used to investigate PIWIL2 expression in the cholangiocarcinoma cell line QBC939 and the bile duct epithelial cell line HIBEpic. Univariate and multivariate surviv-al analyses were performed using the Kaplan-Meier method for hilar cholangiocarcinoma patients who underwent radical resection. PIWIL2 expression was significantly higher in the hilar cholangiocarcinoma tissues and QBC939 cells than in control tissues and HIBEpic cells, respectively (P < 0.05). Poorly and moderately differentiated cholan-giocarcinoma tissues had significantly higher PIWIL2 expression than well-differentiated tissues (P < 0.05). Univariate analysis demonstrated that high PIWIL2 expression was associated with shorter survival time after radical resection (P < 0.05). Multivariate analysis showed that PI-WIL2 expression was an independent prognostic factor after radical re-section of hilar cholangiocarcinoma (P < 0.05). PIWIL2 expression was also associated with tumor-node-metastasis stage and differentiation. PIWIL2 was an independent prognostic factor after radical resection of hilar cholangiocarcinoma.
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Affiliation(s)
- Y J Chen
- Department of Pancreatic-Biliary Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - X F Xiong
- Department of Pancreatic-Biliary Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - S Q Wen
- Abdominal Surgery, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - L Tian
- Department of Pancreatic-Biliary Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - W L Cheng
- Department of Pancreatic-Biliary Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Y Q Qi
- Department of Pancreatic-Biliary Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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Cheng WL, Wang CS, Huang YH, Tsai MM, Liang Y, Lin KH. Overexpression of CXCL1 and its receptor CXCR2 promote tumor invasion in gastric cancer. Ann Oncol 2011; 22:2267-76. [PMID: 21343381 DOI: 10.1093/annonc/mdq739] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND The chemokine (C-X-C motif) ligand 1 (CXCL1) and its receptor CXCR2 are associated with metastasis potential. Our studies were designed to clarify the CXCL1 and CXCR2 expression patterns and to explore their potential role in gastric cancer. DESIGN The expression of CXCL1 was determined in primary gastric cancer specimens using quantitative PCR, immunohistochemistry, and western blotting. To investigate the functional significance of CXCL1 expression, a CXCL1 expression vector and short hairpin RNA targeting the CXCL1 or CXCR2 were transfected into gastric cancer cell lines to examine the biological outcomes of these cells. RESULTS The expression of CXCL1 and CXCR2 was higher in gastric cancer tissues compared with adjacent noncancerous tissues. The upregulation of CXCL1 correlated significantly with tumor progression, advanced stage of gastric cancer patients, and was one of the independent prognostic factors for patient's survival. Furthermore, cancer cells expressing CXCL1 stably exhibited an increase in their migration and invasion ability, whereas CXCL1 or CXCR2 depletion significantly reduced the migration and invasion ability of each cell line. CONCLUSIONS These results provide strong evidence that CXCL1 plays an important role in gastric cancer progression and migration and suggest that CXCL1 is a promising marker for the detection and prognosis of gastric cancer.
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Affiliation(s)
- W-L Cheng
- Department of Biochemistry, School of Medicine,Chang-Gung University, Taoyuan, China
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Wu SM, Huang YH, Yeh CT, Tsai MM, Liao CH, Cheng WL, Chen WJ, Lin KH. Cathepsin H regulated by the thyroid hormone receptors associate with tumor invasion in human hepatoma cells. Oncogene 2011; 30:2057-69. [DOI: 10.1038/onc.2010.585] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Lee YC, Tseng SC, Chen HL, Yu CC, Cheng WL, Du CH, Lin CH. Using autocloning effects to develop broad-bandwidth, omnidirectional antireflection structures for silicon solar cells. Opt Express 2010; 18 Suppl 3:A421-A431. [PMID: 21165072 DOI: 10.1364/oe.18.00a421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
In this study, we used the autocloning effect on pyramid structures to develop broad-bandwidth, omnidirectional antireflection structures for silicon solar cells. The angular dependence of reflectance on several pyramid structures was systematically investigated. The deposition of three-layer autocloned films reduced the refractive index gap between air and silicon, resulting in an increase in the amount of transmitted light and a decrease in the total light escaping. The average reflectance decreased dramatically to ca. 2-3% at incident angles from 0 to 60° for both sub-wavelength- and micrometer-scale pyramid structures. The measured reflectance of the autocloned structure was less than 4% in the wavelength range from 400 to 1000 nm for incident angles from 0 to 60°. Therefore, the autocloning technique, combined with optical thin films and optical gradient structures, is a practical and compatible method for the fabrication of broad-bandwidth, omnidirectional antireflection structures on silicon solar cells.
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Affiliation(s)
- Y C Lee
- Department of Materials Science and Engineering, National Taiwan University, Taipei, Taiwan
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Cheng WL, Kuo CL, Liu CS. Abstract: P1240 ATORVASTATIN INCREASES PLASMA VITAMIN E/LDLCHOLESTEROL AND COQ10/LDL-CHOLESTEROL RATIOS IN HYPERCHOLESTEROLAEMIC PATIENTS. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)71257-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Liu CS, Chen CH, Chiang HC, Kuo CL, Huang CS, Cheng WL, Wei YH, Chen HW. B-group vitamins, MTHFR C677T polymorphism and carotid intima-media thickness in clinically healthy subjects. Eur J Clin Nutr 2007; 61:996-1003. [PMID: 17228344 DOI: 10.1038/sj.ejcn.1602606] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
OBJECTIVE Plasma B-group vitamins and age may affect the carotid intima-media thickness (IMT) in subjects with different 677TT genotype of the methylenetetrahydrofolate reductase (MTHFR) gene. DESIGN A hospital-based cross-study. SETTING Genomic and Vascular Center, Changhua Christian Hospital, Changhua, Taiwan. SUBJECTS Five hundred and forty-one clinically healthy subjects. INTERVENTION Fasting plasma, homocysteine (Hcy), vitamin B(6), vitamin B(12), folate and B-mode carotid ultrasound. RESULTS MTHFR genotype, plasma concentrations of folate, vitamin B(6) and vitamin B(12) and age were significantly correlated to the plasma Hcy concentration. MTHFR 677TT carriers had higher concentrations of Hcy than did subjects with the CC and CT genotypes. Age, sex, body mass index and plasma Hcy were independent contributors to increase carotid IMT. However, with stratification by mean value of age and B-group vitamins concentrations, we found that at advanced age, lower plasma folate and vitamin B(12) were three risk factors involved in the enhancing effect of the MTHFR 677TT genotype on the increase of plasma Hcy and carotid IMT. CONCLUSION MTHFR 677TT-related carotid atherosclerosis was only identified in healthy elderly subjects with lower level of plasma folate and vitamin B(12). SPONSORSHIP Changhua Christian Hospital.
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Affiliation(s)
- C S Liu
- Department of Neurology, Chung Shan Medical University Hospital, Taichung, Taiwan.
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Liu CS, Cheng WL, Lee CF, Ma YS, Lin CY, Huang CC, Wei YH. Alteration in the copy number of mitochondrial DNA in leukocytes of patients with mitochondrial encephalomyopathies. Acta Neurol Scand 2006; 113:334-41. [PMID: 16629770 DOI: 10.1111/j.1600-0404.2006.00586.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVES We investigated whether mutation of mitochondrial DNA (mtDNA) affects the copy number of the mitochondrial genome in patients with mitochondrial myopathy encephalopathy with lactic acidosis and stroke-like episodes (MELAS) and those with myoclonic epilepsy with ragged-red fiber (MERRF) syndromes. MATERIALS AND METHODS Forty-eight Taiwanese patients with MELAS syndrome and 20 patients with MERRF syndrome were recruited in this study. RESULTS In relation to controls, the copy numbers of mtDNA in leukocytes of patients with MELAS or MERRF syndrome were significantly higher at a young age but lower at an advanced age. In addition, MELAS patients harboring higher proportions of mtDNA with A3243G transition had lower mtDNA copy numbers. The MELAS or MERRF patients with multi-system disorders had lower mtDNA copy numbers in leukocytes. Furthermore, higher proportions of mtDNA with 4977 bp deletion were found in leukocytes of MERRF patients with multi-system involvement. CONCLUSION In leukocytes, alteration in the copy number of mtDNA is related to the proportion of mtDNA with a point mutation or large-scale deletion, which may serve as a biomarker in the pathogenesis and disease progression of MELAS and MERRF syndromes.
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Affiliation(s)
- C-S Liu
- Vascular and Genomic Research Center, Changhua Christian Hospital, Changhua, Taiwan
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Abstract
OBJECTIVE Machado-Joseph disease (MJD)/spinocerebellar ataxia type 3 is an autosomal dominant spinocerebellar degeneration, for which there is no effective treatment. PATIENTS AND METHODS This study involved the clinical response of lamotrigine (LTG) on six MJD patients with early truncal ataxia and the effect of LTG on the alteration of ataxin-3 expression in the transformed MJD lymphoblastoid cells. RESULT LTG medication was found, on the basis of single leg standing test tandem gait index, to effectively improve gait balance, but did not prove to be effective in the withdrawal period. In Western blot analysis of ataxin-3 in MJD lymphoblastoid cells, extracellular application of LTG, while leaving the normal level of ataxin-3 intact, decreased the expression of mutant ataxin-3 in a dose-related manner. CONCLUSION Our results indicated that LTG may have significant benefits in relief of gait disturbance in MJD patients with early ataxia, and may be related to the decreased expression of mutant ataxin-3.
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Affiliation(s)
- C-S Liu
- Vascular and Genomic Research Center, Changhua Christian Hospital, Changhua, Taiwan
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Abstract
Sulphur dioxide (SO2) is one of the main atmospheric pollutants in central Taiwan. This article analyses the SO2 concentration seasonal variations and spatial distribution using data obtained from ten air quality monitoring stations and the Taiwan Weather Bureau. It reveals that SO2 concentration is high in winter and low in summer and that high concentration centers are located south of the Taichung coal-fired power plant, the main source of SO2 emissions in the region. The location of high concentration centers changes with different prevailing winds. SO2 variations due to wind direction are not unique. During short periods, when meteorological conditions are constant, variation in the pollution sources cause variations in the spatial distribution. This has been deduced by appreciation of 'Intervention analysis' to time series of hourly data.
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Affiliation(s)
- W L Cheng
- Department of Environmental Science, Tunghai University, Taichung 407, Taiwan ROC
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Siu LK, Lo JY, Cheng WL, Ho PL, Ng WS, Chau PY. An evaluation of susceptibility testing methods for ampicillin-sulbactam using a panel of beta-lactamase-producing bacteria. APMIS 1999; 107:703-8. [PMID: 10440070 DOI: 10.1111/j.1699-0463.1999.tb01464.x] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Bacteria possessing TEM-1-like beta-lactamases are generally regarded as susceptible to ampicillin-sulbactam (SAM), while those harboring OXA-1 enzymes are considered resistant. The current study was undertaken to compare susceptibility testing using various combinations of ampicillin and sulbactam to improve clinical correlation. Members of the Enterobacteriaceae family harboring TEM-1, SHV-1 or OXA-1-like beta-lactamases were tested using the agar dilution method. A substantial proportion of strains harboring OXA-1-like beta-lactamases showed false susceptibility to SAM at the 1:1 ratio or fixed sulbactam concentration of 8 microg/ml. At a fixed sulbactam concentration of 4 microg/ml, the activity of ampicillin-sulbactam appeared to be reduced, with large numbers of TEM-1 producers becoming frankly resistant. Results obtained with the 2:1 ratio exhibited the closest correlation with that obtained by the currently recommended disk diffusion test. However, very major errors were still found between the disk diffusion test and agar dilution test, suggesting the necessity for consideration of a change in criteria for interpretation of disk diffusion test results. In conclusion, SAM susceptibility testing by agar dilution using other than a 2:1 ratio is not recommended and results should be interpreted with caution.
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Affiliation(s)
- L K Siu
- Department of Microbiology, University of Hong Kong, Hong Kong
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Siu LK, Cheng WL, Ho PL, Ng WS, Chau PY, Lo JY. Correlation of in vitro susceptibility testing results for amoxicillin-clavulanate and ampicillin-sulbactam using a panel of beta-lactamase-producing Enterobacteriaceae. APMIS 1998; 106:917-20. [PMID: 9808419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Correlation between in vitro susceptibility results for amoxicillin-clavulanate (AMC) and ampicillin-sulbactam (SAM) was studied using 136 clinical and control strains of Enterobacteriaceae harboring TEM-1, SHV-1 or OXA-1-like beta-lactamases. Determination of minimal inhibitory concentration of antibiotics was performed by agar dilution. The beta-lactamases were initially characterized using isoelectric focusing. Further identification was done by DNA hybridization with or without prior PCR amplification. All strains sensitive to SAM were found to be sensitive also to AMC. In contrast, among those susceptible to AMC, only 50% were sensitive to SAM while 36% gave intermediate results and 14% were resistant. Major differences were found solely among SHV-producers while minor differences occurred mostly among TEM-producers. This phenomenon is probably related to the differential activities of clavulanate and sulbactam against various beta-lactamases. In conclusion, testing of Enterobacteriaceae isolates for susceptibility to AMC and SAM should be performed and reported individually to avoid erroneous designation of susceptibility.
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Affiliation(s)
- L K Siu
- Department of Microbiology, University of Hong Kong, Hong Kong
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Cheng WL, Qian ZF, Su J. [Effect of huoxue tablet on the rheology of erythrocyte in primary hypertension]. Zhongguo Zhong Xi Yi Jie He Za Zhi 1997; 17:718-20. [PMID: 10322817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
OBJECTIVE To explore the effect of Huoxue Tablet on the rheology of erythrocyte and the therapeutic effect in treating primary hypertension. METHODS Seventy-five cases of primary hypertension patients were randomly divided into 3 groups. Group I was treated by Huoxue Tablet, group II was treated by composite Danshen tablet, group III was treated by placebo. Erythrocytes deformability and aggregation were determined by laser diffractometry apparatus before and after treatment. RESULTS After treated by Huoxue Tablet for 5-6 weeks. The authors found that deformability of erythrocyte was increased, the aggregation of erythrocyte, the whole blood viscosity and the blood pressure were reduced. The clinical symptoms were relieved. CONCLUSIONS Huoxue Tablet can obviously improve the rheology of erythrocyte of the primary hypertension and relieve the clinical symptoms. It can be used as a supplementary medicine in treating primary hypertension.
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Affiliation(s)
- W L Cheng
- China-Japan Friendship Hospital, Beijing
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Abstract
Large amounts of choline are required in neonates for rapid organ growth and membrane biosynthesis. Human infants derive much of their choline from milk. In our study, mature human milk contained more phosphocholine and glycerophosphocholine than choline, phosphatidylcholine, or sphingomyelin (P < 0.01). Previous studies have not recognized that phosphocholine and glycerophosphocholine exist in human milk. Concentrations of choline compounds in mature milk of mothers giving birth to preterm or full-term infants were not significantly different. Infant formulas also contained choline and choline-containing compounds. In infant formulas derived from soy or bovine milk, unesterified choline, phosphocholine, glycerophosphocholine, phosphatidylcholine, and sphingomyelin concentrations varied greatly. All infant formulas contained significantly less phosphocholine than did human milk. Soy-derived formulas contained significantly less glycerophosphocholine (P < 0.01) and phosphocholine (P < 0.01) and more phosphatidylcholine (P < 0.01) than did human or bovine milk or bovine milk-derived infant formulas. Rat milk contained greater amounts of glycerophosphocholine (almost 75% of the total choline moiety in milk) and phosphocholine than did human milk. When dams were provided with either a control, choline-deficient, or choline-supplemented diet, milk composition reflected the choline content of the diet. Because there are competing demands for choline in neonates, it is important to ensure adequate availability through proper infant nutrition. Although the free choline moiety is adequately provided by infant formulas and bovine milk, reevaluation of the concentrations of other choline esters, in particular glycerophosphocholine and phosphocholine, may be warranted.
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Affiliation(s)
- M Q Holmes-McNary
- Department of Nutrition, School of Public Health, University of North Carolina, Chapel Hill 27599-7400, USA
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Lee YH, Tzecheng ZY, Wang SC, Cheng WL, Chen CW. Structural stability of heterologous genes cloned in Streptomyces plasmid pIJ702. Biochem Biophys Res Commun 1986; 140:372-8. [PMID: 3535789 DOI: 10.1016/0006-291x(86)91100-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A recombinant plasmid pWCL1 containing Streptomyces plasmid pIJ702, E. coli plasmid pUC12, and hepatitis B viral surface antigen (HBsAg) gene was stably maintained in E. coli, but exhibited structural instability in S. lividans 1326. The deletions were found ranging from 2.75 to 5.65 kilobases (kb) and most of them occurred within the melanin (mel) gene of pIJ702, resulting in the loss of part of the mel gene sequence plus the insert. The removal of the pUC12 sequence from pWCL1 eliminated the instability. However, pUC12 alone inserted in either orientation on pIJ702 also caused the deletion in S. lividans 1326. The results indicated that the structural instability of hybrid plasmid of pIJ702 depended on the interaction between the mel sequence and the inserted sequence.
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