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Chen CM, Liang SC, Sun CK, Cheng YS, Hung KC. A meta-analysis of randomized sham-controlled trials of repetitive transcranial magnetic stimulation for attention-deficit/hyperactivity disorder. Braz J Psychiatry 2024. [PMID: 38593057 DOI: 10.47626/1516-4446-2023-3428] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Accepted: 02/04/2024] [Indexed: 04/11/2024]
Abstract
OBJECTIVE To investigate efficacy of repetitive transcranial magnetic stimulation (rTMS) on attention-deficit/hyperactivity disorder (ADHD). METHODS Randomized sham-controlled trials (RCTs) were identified from major databases from the inception date of January 1990 to January 2023. Primary outcome was improvement in total symptoms of ADHD. Subgroup analysis focused on rTMS efficacy targeting different brain regions. Secondary outcomes were associations of rTMS with improvements in different symptoms of ADHD. Outcomes were expressed as effect size (ES) based on standardized mean difference (SMD) (continuous data), and odds ratios (ORs) with 95% confidence interval (CI) (categorical data). RESULTS Meta-analysis of six RCTs involving 169 participants demonstrated no difference in total ADHD symptoms between rTMS-treated participants and sham controls (SMD=-0.24,p=0.17). Subgroup analysis revealed better efficacy of rTMS than sham controls when targeting right prefrontal cortex (rPFC) (SMD=-0.49,p=0.03), but not left prefrontal cortex (lPFC) (SMD= 0.01,p=0.67). rTMS treatment correlated with better improvement in symptoms of inattention (SMD=-0.76,p=0.0002), but not hyperactivity (p=0.86), impulsivity (p=0.41), and depression (p=0.95). The apparently higher risk of dropout in the rTMS group than sham controls was not statistically significant (OR=1.65,p=0.26). CONCLUSIONS Our study only supported the therapeutic efficacy of rTMS targeting rPFC for the symptoms of ADHD, especially inattention, but not that targeting lPFC. Further large-scale randomized sham-controlled trials are required to verify our findings.
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Affiliation(s)
- Chia-Min Chen
- Department of Natural Biotechnology, Nanhua University, Chiayi, Taiwan
| | - Shun-Chin Liang
- Department of Psychiatry, Jianan Psychiatric Center, Ministry of Health and Welfare, Tainan, Taiwan. Department of Center for General Education, University of Kun Shan, Tainan, Taiwan. Department of Optometry, University of Chung Hwa of Medical Technology, Tainan, Taiwan
| | - Cheuk-Kwan Sun
- Department of Emergency Medicine, E-Da Hospital, I-Shou University, Kaohsiung City, Taiwan. School of Medicine for International Students, College of Medicine, I-Shou University, Kaohsiung, Taiwan
| | - Yu-Shian Cheng
- Department of Psychiatry, Tsyr-Huey Mental Hospital, Kaohsiung Jen-Ai's Home, Taiwan
| | - Kuo-Chuan Hung
- Department of Anesthesiology, Chi Mei Medical Center, Tainan, Taiwan
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Liang SC, Liu ZY, Huang H. [Application of echocardiographic "red flags sign" in the diagnosis of cardiac amyloidosis]. Zhonghua Xin Xue Guan Bing Za Zhi 2024; 52:316-322. [PMID: 38514337 DOI: 10.3760/cma.j.cn112148-20230730-00037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Affiliation(s)
- S C Liang
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Z Y Liu
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - H Huang
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
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Liang SC, Sun CK, Chang CH, Cheng YS, Tzang RF, Chiu HJ, Wang MY, Cheng YC, Hung KC. Therapeutic efficacy of probiotics for symptoms of attention-deficit hyperactivity disorder in children and adolescents: meta-analysis. BJPsych Open 2024; 10:e36. [PMID: 38268113 PMCID: PMC10897698 DOI: 10.1192/bjo.2023.645] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2024] Open
Abstract
BACKGROUND The efficacy of probiotics as a therapeutic alternative for attention-deficit hyperactivity disorder (ADHD) remain unclear. AIMS To investigate the effectiveness of probiotics for symptoms of ADHD and identify possible factors affecting their efficacy. METHOD Randomised placebo-controlled trials were identified through searching major databases from inception to April 2023, using the main keywords 'probiotics' and 'ADHD' without limitation on languages or geographic locations. The outcome of interest included improvement in total symptoms of ADHD, symptoms of inattention and hyperactivity/impulsivity, and drop-out rate. Continuous and categorical data were expressed as effect sizes based on standardised mean differences (SMDs) and odds ratios, respectively, with 95% confidence intervals. RESULTS Meta-analysis of seven trials involving 379 participants (mean age 10.37 years, range 4-18 years) showed no significant improvement in total symptoms of ADHD (SMD = 0.25; P = 0.12), symptoms of inattention (SMD = 0.14; P = 0.3) or hyperactivity/impulsivity (SMD = 0.08; P = 0.54) between the probiotic and placebo groups. Despite non-significance on subgroup analyses, there was a large difference in effect size between studies using probiotics as an adjunct to methylphenidate and those using probiotics as supplementation (SMD = 0.84 v. 0.07; P = 0.16), and a moderate difference in effect size between studies using multiple strains of probiotics and those using single-strain regimens (SMD = 0.45 v. 0.03; P = 0.19). CONCLUSIONS Current evidence shows no significant difference in therapeutic efficacy between probiotics and placebos for treatment of ADHD symptoms. However, albeit statistically non-significant, higher therapeutic efficacies associated with multiple-strain probiotics or combining probiotics with methylphenidate may provide direction for further research.
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Affiliation(s)
- Shun-Chin Liang
- Department of Management Center, Jianan Psychiatric Center, Ministry Of Health and Welfare, Taiwan; Department of Center for General Education, University of Kun Shan, Taiwan; and Department of Optometry, University of Chung Hwa of Medical Technology, Taiwan
| | - Cheuk-Kwan Sun
- Department of Emergency Medicine, E-Da Dachang Hospital, I-Shou University, Taiwan; and School of Medicine for International Students, College of Medicine, I-Shou University, Taiwan
| | - Chih-Hua Chang
- Department of Psychiatry, Tsyr-Huey Mental Hospital, Kaohsiung Jen-Ai's Home, Taiwan
| | - Yu-Shian Cheng
- Department of Psychiatry, Tsyr-Huey Mental Hospital, Kaohsiung Jen-Ai's Home, Taiwan
| | - Ruu-Fen Tzang
- Department of Psychiatry, Mackay Memorial Hospital, Taiwan
| | - Hsien-Jane Chiu
- Taoyuan Psychiatric Center, Ministry of Health and Welfare, Taiwan; and Institute of Hospital and Health Care Administration, National Yang-Ming University, Taiwan
| | - Ming Yu Wang
- Department of Psychiatry, China Medical University Hsinchu Hospital, China Medical University, Taiwan; and Department of Health Services Administration, China Medical University, Taiwan
| | - Ying-Chih Cheng
- Department of Psychiatry, China Medical University Hsinchu Hospital, China Medical University, Taiwan; Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taiwan; and Research Center of Big Data and Meta-analysis, Wan Fang Hospital, Taipei Medical University, Taiwan
| | - Kuo-Chuan Hung
- Department of Anesthesiology, Chi Mei Medical Center, Taiwan
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Chen YH, Liang SC, Sun CK, Cheng YS, Tzang RF, Chiu HJ, Wang MY, Cheng YC, Hung KC. A meta-analysis on the therapeutic efficacy of repetitive transcranial magnetic stimulation for cognitive functions in attention-deficit/hyperactivity disorders. BMC Psychiatry 2023; 23:756. [PMID: 37845676 PMCID: PMC10580630 DOI: 10.1186/s12888-023-05261-2] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 10/08/2023] [Indexed: 10/18/2023] Open
Abstract
BACKGROUND Therapeutic efficacies of repetitive transcranial magnetic stimulation (rTMS) for improving cognitive functions in patients with deficit/hyperactivity disorder (ADHD) remained unclear. The aim of this meta-analysis was to investigate the therapeutic efficacy of rTMS focusing on different cognitive performances. METHODS Major databases were searched electronically from inception to February 2023 by using keywords mainly "rTMS" and "ADHD" to identify randomized controlled trials (RCTs) that investigated the therapeutic efficacy of rTMS for improving cognitive functions assessed by standardized tasks in patients with ADHD. The overall effect size (ES) was calculated as standardized mean difference (SMD) based on a random effects model. RESULTS Meta-analysis of five RCTs with 189 participants (mean age of 32.78 and 8.53 years in adult and child/adolescent populations, respectively) demonstrated that rTMS was more effective for improving sustained attention in patients with ADHD compared with the control groups (SMD = 0.54, p = 0.001).Our secondary analysis also showed that rTMS was more effective for improving processing speed than the control groups (SMD = 0.59, p = 0.002) but not for enhancing memory or executive function. CONCLUSIONS Our results supported the therapeutic efficacy of rTMS for improving sustained attention and processing speed. However, the limitation of available data warrants further studies to verify these findings.
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Affiliation(s)
- Ying-Hsin Chen
- Department of Emergency Medicine, Show Chwan Memorial Hospital, Changhua, Taiwan
| | - Shun-Chin Liang
- Department of Management Center, Jianan Psychiatric Center, Ministry Of Health and Welfare, Tainan, Taiwan
- Department of Center for General Education, University of Kun Shan, Tainan, Taiwan
- Department of Optometry, University of Chung Hwa of Medical Technology, Tainan, Taiwan
| | - Cheuk-Kwan Sun
- Department of Emergency Medicine, E-Da Dachang Hospital, I-Shou University, Kaohsiung City, Taiwan
- School of Medicine for International Students, College of Medicine, I-Shou University, Kaohsiung City, Taiwan
| | - Yu-Shian Cheng
- Department of Psychiatry, Tsyr-Huey Mental Hospital, Kaohsiung Jen-Ai's Home, Kaohsiung City, Taiwan
| | - Ruu-Fen Tzang
- Department of Psychiatry, Mackay Memorial Hospital, Taipei City, Taiwan
| | - Hsien-Jane Chiu
- Taoyuan Psychiatric Center, Ministry of Health and Welfare, Taoyuan City, Taiwan
- Institute of Hospital and Health Care Administration, National Yang-Ming University, Taipei City, Taiwan
| | - Ming-Yu Wang
- Department of Psychiatry, China Medical University Hsinchu Hospital, China Medical University, Hsinchu, Taiwan
- Department of Health Services Administration, China Medical University, Taichung, Taiwan
| | - Ying-Chih Cheng
- Department of Psychiatry, China Medical University Hsinchu Hospital, China Medical University, Hsinchu, Taiwan
- Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan
- Research Center of Big Data and Meta-Analysis, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
| | - Kuo-Chuan Hung
- Department of Anesthesiology, Chi Mei Medical Center, Tainan City, Taiwan.
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Liang SC, Sun CK, Fan HY, Chung W, Tzang RF, Hung KC, Chiu HJ, Cheng YS, Yeh PY. Therapeutic effects of antidepressants for global improvement and subdomain symptoms of autism spectrum disorder: a systematic review and meta-analysis. J Psychiatry Neurosci 2022; 47:E299-E310. [PMID: 35948343 PMCID: PMC9377548 DOI: 10.1503/jpn.210191] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 03/06/2022] [Accepted: 06/23/2022] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND No established pharmacological treatment is available for the core symptoms of autism spectrum disorder (ASD). This study aimed at investigating the efficacy of antidepressants for the core and associated symptoms of ASD. METHODS We searched PubMed, Embase, ClinicalKey, Cochrane CENTRAL, ScienceDirect, Web of Science and ClinicalTrials.gov using the keywords "ASD" and "antidepressants." We searched from database inception to June 2021 for randomized controlled trials of antidepressant use in patients with ASD. We calculated pooled effect sizes based on a random-effects model. RESULTS Analysis of 16 studies with 899 participants showed improvements in restricted and repetitive behaviours (effect size = 0.27) and global symptoms (effect size = 1.0) in patients with ASD taking antidepressants versus those taking placebos (p ≤ 0.01). We found no differences between the 2 groups (p ≥ 0.36) in terms of dropout rate (odds ratio [OR] = 1.17) or rate of study discontinuation because of adverse events (OR = 1.05). We also noted improvements in irritability and hyperactivity in the antidepressant group (Hedges g = 0.33 and 0.22, respectively, both p < 0.03). Subgroup analyses showed significant effects of medication type (i.e., clomipramine was better than SSRIs) and age (antidepressants were more effective in adults than in children or adolescents) on both restricted and repetitive behaviours and global improvement (p < 0.05). Meta-regression demonstrated that better therapeutic effects were associated with lower symptom severity and older age. LIMITATIONS The small effect sizes and variations in treatment response that we found warrant further study. CONCLUSION Our results supported the effectiveness of antidepressants for global symptoms and symptom subdomains of ASD, with tolerable adverse effects. Low symptom severity and adulthood were associated with better outcomes.
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Affiliation(s)
| | | | | | | | | | | | | | - Yu-Shian Cheng
- From the Department of Management Centre, Jianan Psychiatric Centre, Ministry Of Health and Welfare, Tainan, Taiwan (Liang); the Centre for General Education, University of Kun Shan, Tainan, Taiwan (Liang); the Department of Emergency Medicine, E-Da Hospital, Kaohsiung, Taiwan (Sun); the School of Medicine for International Students, College of Medicine, I-Shou University, Kaohsiung, Taiwan (Sun); the Department of Psychiatry, Tsyr-Huey Mental Hospital, Kaohsiung Jen-Ai's Home, Taiwan (Fan, Chung, Cheng); the Department of Psychiatry, Mackay Memorial Hospital, Taipei, Taiwan (Tzang); the Department of Anesthesiology, Chi Mei Medical Centre, Tainan, Taiwan (Hung); the Taoyuan Psychiatric Centre, Ministry of Health and Welfare, Taoyuan City, Taiwan (Chiu); the Institute of Hospital and Health Care Administration, National Yang-Ming University, Taipei City, Taiwan (Chiu); the Institute of Biomedical Sciences, National Sun Yat-Sen University, Kaohsiung City, Taiwan (Cheng); the Department of Psychology, College of Medical and Health Science, Asia University, Taichung, Taiwan (Yeh); Clinical Psychology Center, Asia University Hospital, Taichung, Taiwan (Yeh)
| | - Pin-Yang Yeh
- From the Department of Management Centre, Jianan Psychiatric Centre, Ministry Of Health and Welfare, Tainan, Taiwan (Liang); the Centre for General Education, University of Kun Shan, Tainan, Taiwan (Liang); the Department of Emergency Medicine, E-Da Hospital, Kaohsiung, Taiwan (Sun); the School of Medicine for International Students, College of Medicine, I-Shou University, Kaohsiung, Taiwan (Sun); the Department of Psychiatry, Tsyr-Huey Mental Hospital, Kaohsiung Jen-Ai's Home, Taiwan (Fan, Chung, Cheng); the Department of Psychiatry, Mackay Memorial Hospital, Taipei, Taiwan (Tzang); the Department of Anesthesiology, Chi Mei Medical Centre, Tainan, Taiwan (Hung); the Taoyuan Psychiatric Centre, Ministry of Health and Welfare, Taoyuan City, Taiwan (Chiu); the Institute of Hospital and Health Care Administration, National Yang-Ming University, Taipei City, Taiwan (Chiu); the Institute of Biomedical Sciences, National Sun Yat-Sen University, Kaohsiung City, Taiwan (Cheng); the Department of Psychology, College of Medical and Health Science, Asia University, Taichung, Taiwan (Yeh); Clinical Psychology Center, Asia University Hospital, Taichung, Taiwan (Yeh)
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Liang SC, Wang ZQ, Wang JL. [Clinical analysis of 76 cases of sentinel lymph node detection in cervical cancer and endometrial cancer]. Zhonghua Fu Chan Ke Za Zhi 2019; 52:605-611. [PMID: 28954449 DOI: 10.3760/cma.j.issn.0529-567x.2017.09.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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 evaluate the feasibility and clinical value of identifying sentinel lymph node (SLN) and to assess possible factors associated with detection rate in both cervical cancer and endometrial cancer. Methods: Retrospective study of 76 cases (39 with cervical cancer and 37 with endometrial cancer) were conducted in Peking University People's Hospital. All patients underwent SLN biopsy with tracers of indocyanine green (ICG) and (or) carbon nanoparticles. All mapped SLN was resected and followed by procedures that systematic pelvic lymphadenectomy and hysterectomy according to National Comprehensive Cancer Network (NCCN) guidelines. All the lymph nodes were examined postoperatively for the routine paraffin section of hematoxylin and eosin (HE) staining. Detection rate, sensitivity and negative predictive value of SLN were calculated and factors associated with the detection rate were analyzed. Results: The overall detection rate was 95% (72/76), with 74% (56/76) positive bilaterally. The bilateral detection rate of SLN with combined technique was significantly higher than that with single technique (P<0.05). The difference of SLN detection rate between cervical and endometrial cancer patients were not significant (P>0.05). SLN were mostly recognized in obturator (32.1%, 114/355) and external iliac areas (32.4%, 115/355) in cervical cancer, and in external iliac (41.2%, 91/221) and obturator areas (39.4%,87/221) in endometrial cancer. Among 55 patients underwent systematic pelvic lymphadenectomy, the sensitivity of SLN detection was 75% and the negative predictive value was 96%. The sensitivity and negative predictive value were both 100% in patients with successfully bilateral mapped of SLN. Conclusion: s The overall detection rate of SLN in cervical and endometrial cancer is the highest with the combined technique of ICG and carbon nanoparticles. The detection rate and located regions of SLN are similar between cervical and endometrial cancer, and SLN are mostly recognized in the external iliac and obturator areas. The sensitivity and negative predictive value of SLN detection are high, especially when SLN are bilateral mapped.
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Affiliation(s)
- S C Liang
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing 100044, China
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Liu F, Zou TJ, Tan ZL, Chen S, Wu ZH, Yan GP, Zhang Q, Liang SC, Yang J. Isoindoline nitroxide-labeled porphyrins as potential fluorescence-suppressed spin probes. Org Biomol Chem 2017; 15:1245-1253. [PMID: 28098314 DOI: 10.1039/c6ob02748b] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A series of isoindoline nitroxide-labeled porphyrins were synthesized by the reaction of 5-phenyldipyrromethane and 5-(4'-carboethoxy-methyleneoxyphenyl)dipyrromethane with 5-formyl-1,1,3,3-tetramethylisoindolin-2-yloxyl (FTMIO) using the Lindsey method. The corresponding water-soluble spin-labeled porphyrins were also prepared. Subsequently, these compounds were characterized and their in vitro properties were evaluated. The electrochemical assay demonstrated that these isoindoline nitroxide-labeled porphyrins had similar electrochemical and redox properties to 5-carboxy-1,1,3,3-tetramethylisoindolin-2-yloxyl (CTMIO). The electron paramagnetic resonance test showed that these porphyrins exhibited hyperfine splittings and characteristic spectra of CTMIO with typical nitroxide g-values and nitrogen isotropic hyperfine coupling constants. The in vitro cytotoxicity assay indicated that these porphyrins possessed low cytotoxicity to human renal tubular epithelial 293T cells (normal cells) and human hepatoma HepG2 cells (tumor cells). Fluorescence spectroscopy revealed that free base isoindoline nitroxide-labeled porphyrins exhibited fluorescence suppression characteristic of nitroxide-fluorophore systems. In vitro fluorescene imaging demonstrated that the reduced isoindoline nitroxide-labeled porphyrins eliminated fluorescence suppression and displayed strong red fluorescence imaging in HepG2 cells. Thus these isoindoline nitroxide-labeled porphyrins may be considered potentially as biological spin probes for fluorescence imaging and EPR spectroscopy.
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Affiliation(s)
- F Liu
- School of Material Science and Engineering, Wuhan Institute of Technology, Wuhan 430074, China
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Fang WH, Hu LL, Yang XL, Hu K, Liang SC, Zhou S. Effect of temperature on pharmacokinetics of enrofloxacin in mud crab, Scylla serrata (Forsskål), following oral administration. J Fish Dis 2008; 31:171-176. [PMID: 18261030 DOI: 10.1111/j.1365-2761.2007.00884.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The study was conducted to evaluate the pharmacokinetics of enrofloxacin following a single oral gavage (10 mg kg(-1)) in mud crab, Scylla serrata, at water temperatures of 19 and 26 degrees C. Enrofloxacin concentration in haemolymph was determined using high-performance liquid chromatography (HPLC). A multiple and repeated haemolymph sampling from the articular cavity of crab periopods was developed. The haemolymph of an individual crab was successfully sampled up to 11 times from the articular cavity. The profile of haemolymph enrofloxacin concentration of an individual crab versus time was thus achieved. The mean haemolymph enrofloxacin concentration versus time was described by a two-compartment model with first-order absorption at two water temperatures. The peak concentrations of haemolymph enrofloxacin at 19 and 26 degrees C were 7.26 and 11.03 mug mL(-1), at 6 and 2 h, respectively. The absorption and distribution half-life time ( and t(1/2alpha)) at 19 degrees C were 3.7 and 4.5 h, respectively, which were markedly larger than the corresponding values (1.1 and 1.5 h) at 26 degrees C; the elimination half-life time (t(1/2beta)) was 79.1 and 56.5 h at 19 and 26 degrees C, respectively. The area under curve (AUC), total body clearance (Cl) and mean residence time (MRT(0-infinity)) at 19 degrees C were 636.0 mg L(-1) h, 0.016 L h(-1) kg(-1) and 102.5 h, respectively; the corresponding values at 26 degrees C were 583.4 mg L(-1) h, 0.018 L h(-1) kg(-1)and 63.7 h. These results indicate that enrofloxacin is absorbed and eliminated more rapidly in mud crab at 26 degrees C than at 19 degrees C.
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Affiliation(s)
- W H Fang
- East China Sea Fisheries Research Institute, Chinese Academy of Fisheries Science, Key and Open Laboratory of Marine and Estuarine Fisheries, Ministry of Agriculture, 300 Jungong Road, Shanghai, China.
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Liang CT, Chueh LL, Pang VF, Zhuo YX, Liang SC, Yu CK, Chiang H, Lee CC, Liu CH. A Non-biotin Polymerized Horseradish-peroxidase Method for the Immunohistochemical Diagnosis of Canine Distemper. J Comp Pathol 2007; 136:57-64. [PMID: 17258225 DOI: 10.1016/j.jcpa.2006.11.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2006] [Accepted: 11/06/2006] [Indexed: 11/20/2022]
Abstract
This report describes a modified non-biotin polymerized horseradish peroxidase (HRP) immunohistochemical method for the diagnosis of canine distemper virus (CDV) infection from formalin-fixed, paraffin wax-embedded tissues. This method confirmed infection in seven of eight (87.5%) suspected cases. Labelled CDV antigen was observed in the following sites: cerebrum, cerebellum, meninges, glial cells, neurons, vascular endothelium, periventricular areas and pericytes, and choroid plexus; grey and white matter and central canal of the spinal cord; renal pelvis and tubular epithelium, and urinary bladder epithelium; macrophages and lymphocytes in splenic white pulp and lymph nodes; skin epidermis; bronchiolar epithelium and alveolar macrophages; hepatic Kupffer cells, and gastric and intestinal mucosal epithelium; stratified squamous epithelium of the tongue and oesophagus. With the non-biotin HRP detection system, pretreatment by autoclaving followed by microwave heating gave better labelling results than did microwave pretreatment alone. No obvious difference was noted between the labelling results produced by the non-biotin HRP detection system and the Super Sensitive Link-Label IHC detection system.
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Affiliation(s)
- C T Liang
- National Laboratory Animal Center, National Applied Research Laboratories, Nan-Kang, Taipei 115
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Liang CT, Wu SC, Huang YT, Lin YC, Chang WJ, Chou JY, Liang SC, Liu CH. Immunohistochemical diagnosis of mouse hepatitis virus and mycoplasma pulmonis infection with murine antiserum. J Comp Pathol 2004; 131:214-20. [PMID: 15276861 DOI: 10.1016/j.jcpa.2004.04.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2003] [Accepted: 04/07/2004] [Indexed: 11/21/2022]
Abstract
This study established a modified alkaline phosphatase-labelled avidin-biotin-complex (ABC-AP) method for diagnosis of mouse hepatitis virus (MHV) and Mycoplasma pulmonis infection from formalin-fixed, paraffin wax-embedded sections, murine antibody-positive serum being used as the primary reagent. With this method, MHV antigen in cAnNCrj.Cg-Foxn1(nu)/Foxn1(nu) mice and M. pulmonis antigen in Wistar rats were immunolabelled in tissue sections. MHV antigen was clearly detected in samples of liver, stomach, caecal and colonic mucosa, and spleen. M. pulmonis antigen was demonstrated on the luminal surface of bronchiolar epithelial cells. This method may prove useful in diagnosis when commercial antisera are unavailable or when immunosuppression prevents serological diagnosis.
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Affiliation(s)
- C T Liang
- National Laboratory Animal Center, National Applied Research Laboratories, Nan-Kang, Taipei 115, Taiwan, ROC
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Abstract
A novel water-soluble fluorescent probe, monosodium 7-(4,6-dichloro-1,3,5-triazinylamino)-1,3-naphthalenedisulfonic acid (DTND), was synthesized by reacting cyanuric chloride with 7-amino-1,3-naphthalenedisulfonic acid monopotassium salt at 0-5 degrees C. This new reagent was used for the determination of methylamine. The linear range is 3x10(-6)-2x10(-4) mol L(-1) with a detection limit (S/N=3) of 7.2x10(-8) mol L(-1), and the relative S.D. is 1.3% for ten replicate determinations of 1x10(-5) mol L(-1) CH3NH2. Common species in the aqueous environment have no or only slight influence on the determination. The method can be used to determine methylamine in real water samples.
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Affiliation(s)
- H Gu
- Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing
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Liang SC, Wang H, Zhang ZM, Zhou YY, Zhang HS. Spectrofluorimetric determination of thiols by use of N[P-(2-benzoxazolyl)phenyl]maleimide. Fresenius J Anal Chem 2001; 370:1117-9. [PMID: 11583099 DOI: 10.1007/s002160100777] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The weak fluorescence of N-[P-(2-benzoxazolyl)phenyl]maleimide (BOPM) can be greatly enhanced by thiol-containing compounds. A sensitive and simple spectrofluorimetric method based on the use of BOPM has been developed for the determination of thiols such as cysteine (Cys) and reduced glutathione (GSH). Calibration plots were linear in the concentration range from 0 to 1.6 x 10(-7) mol L(-1) for Cys and 0 to 1.7 x 10(-7) mol L(-1) for GSH. The detection limits (3a) were 2.36 x 10(-10) mol L(-1) for Cys and 1.49 x 10(-10) mol L(-1) for GSH. Many other amino acids (present at 100-fold greater concentrations) did not interfere with the determination. The proposed method has been used for the determination of Cys in protein hydrolysate and cystine electrolyte or GSH in serum, with recoveries of 95.4-103.7%.
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Affiliation(s)
- S C Liang
- Department of Chemistry, Wuhan University, PR China
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Abstract
Laparoscopic suturing and repairing of the fascial opening at 10- to 12-mm cannula puncture sites is well established; however, closing a 5-mm cannula wound is not well documented. We often leave the wound open without suture and cover it with gauze after removing the surgical drainage tube. An unusual early postoperative complication of laparoscopic surgery was an incarcerated hernia in a 5-mm cannula site. The 9-year-old girl underwent laparoscopic surgery due to an 8-cm ovarian mature teratoma. After 7 days, she came to our hospital because of a protruding mass in the left cannula wound. The mass was excised, and incarcerated fallopian tube torsion with necrotic change was diagnosed.
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Affiliation(s)
- P H Wang
- Department of Obstetrics and Gynecology, Veterans General Hospital-Taipei, 201, Section 2, Shih-Pai Road, Taipei 112, Taiwan
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Liang SC, Simecka JW, Lindsey JR, Cassell GH, Davis JK. Antibody responses after Sendai virus infection and their role in upper and lower respiratory tract disease in rats. Lab Anim Sci 1999; 49:385-94. [PMID: 10480643] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
BACKGROUND AND PURPOSE Sendai virus infection in rats is an excellent model for studying development and role of host defenses throughout the respiratory tract after this infection. Therefore, development of serum antibody responses and disease were studied. METHODS Forty-two anesthetized pathogen-free 3- to 4- week-old LEW/NCr rats were inoculated intranasally with Sendai virus. At postinoculation days 0, 2, 3, 5, 8, 10, and 14, rats were euthanized by administration of a pentobarbital sodium overdose followed by exsanguination. Serum was obtained from all animals, and nasal wash and bronchoalveolar lavage specimens were collected during selected experiments. An ELISPOT assay was used to measure numbers of Sendai virus-specific antibody-forming cells in respiratory tract lymphoid tissue. RESULTS Recovery from disease and clearance of virus from respiratory tract tissues coincided with development of serum antibody responses. Upper respiratory tract lymph nodes were the initial and major sites of appearance of antibody-forming cells. Immunoglobulin G was the predominant subtype of these cells during recovery from the infection and in rats resistant to infection. Passive transfer of antisera or specific IgG protected the lower but not the upper respiratory tract. CONCLUSIONS Circulating components of immunity have a major role in resistance and recovery from disease in the lower respiratory tract, whereas local responses are likely involved in protection of the upper respiratory tract. Local lymphoid tissues are the major production sites of IgG, which contributes to resistance to and recovery from respiratory tract diseases.
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Affiliation(s)
- S C Liang
- National Animal Center, National Defense Medical Center, Taipei, Taiwan, ROC
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15
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Chao JS, Wei LY, Huang MC, Liang SC, Chen HH. Genotoxic effects of triphenyltin acetate and triphenyltin hydroxide on mammalian cells in vitro and in vivo. Mutat Res 1999; 444:167-74. [PMID: 10477351 DOI: 10.1016/s1383-5718(99)00082-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Two organotin pesticides, triphenyltin acetate (TPTA) and triphenyltin hydroxide (TPTH), were evaluated for their ability to induce micronuclei (MN) and sister chromatid exchange (SCE) in vitro using cultured Chinese hamster ovary (CHO) cells and in vivo BALB/c mouse erythrocytes. Both pesticides induced a dose-dependent increase but only TPTH induced a significant increase in MN at the highest dose (150 ng/ml) tested in CHO cells. With adding S9 microsomal fractions, both pesticides induced a meaningful MN induction at 150 ng/ml and a dose-dependent significant increase in SCE. In vivo MN induction in erythrocytes was conducted by treating BALB/c mice orally or intraperitoneally with these pesticides either in a single or triple treatments. Oral gavage (p.o.) of TPTA resulted in a dose-related significant increase of MN induction in peripheral blood and of TPTH induced a significant increase in micronucleated reticulocyte (MNRETs) only in a single treatment. Intraperitoneal administration of TPTA or TPTH, however, resulted in meaningless random increases in MN though these increases might be attributable to toxic effects. The MNRETs levels in the treatment with both pesticides were independent to the sampling time. This study demonstrated that TPTA and TPTH was potential chromosome mutagens.
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Affiliation(s)
- J S Chao
- National Laboratory Animal Breeding and Research Center, P.O. Box 1-86, Nankang 115, Taipei, Taiwan
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16
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Abstract
Degeneration of the accessory navicular synchondrosis may be associated with decreased function of the posterior tibial tendon in patients who are middle-aged or older. We investigated the role of ultrasonography in differentiating between degeneration of the accessory navicular synchondrosis with separation of the accessory navicular from the navicular, which has not been previously reported to our knowledge, and a rupture of the posterior tibial tendon. We studied fourteen patients (mean age, fifty-five years; range, forty-one to seventy-two years) who had an operatively confirmed injury of the accessory navicular synchondrosis. The mean duration of follow-up was thirty-nine months (range, twenty-seven to fifty-four months). Preoperative radiographs demonstrated a type-II accessory navicular (an accessory navicular with a synchondrosis) in all fourteen patients. Ultrasonography, which was performed for twelve patients, demonstrated a defect in the synchondrosis in eleven patients and a normal posterior tibial tendon in all twelve. The operative findings included incomplete separation of the synchondrosis in four of the fourteen patients, complete separation of the synchondrosis and the periosteum in eight, and avulsion of the accessory navicular in two. On the basis of our findings, we concluded that post-traumatic degeneration of an accessory navicular synchondrosis may present clinically as a variant type of avulsion or rupture of the posterior tibial tendon in this age-group. Ultrasonography is useful for distinguishing between complete or partial separation through the synchondrosis and rupture or attenuation of the posterior tibial tendon.
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Affiliation(s)
- Y J Chen
- Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Taipei, Taiwan, Republic of China
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17
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Chen A, Sheu LF, Chou WY, Tsai SC, Chang DM, Liang SC, Lin FG, Lee WH. Interleukin-1 receptor antagonist modulates the progression of a spontaneously occurring IgA nephropathy in mice. Am J Kidney Dis 1997; 30:693-702. [PMID: 9370186 DOI: 10.1016/s0272-6386(97)90495-9] [Citation(s) in RCA: 34] [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: 02/05/2023]
Abstract
Cytokines, such as interleukin-1 (IL-1), may play a key role in the pathogenesis of IgA nephropathy (IgAN). This study was conducted to evaluate the effects of IL-1 receptor antagonist (IL-1ra) in the treatment of a spontaneously occurring experimental IgAN in established phase. ddY mice (12/group) were injected twice daily with 3 mg/kg of IL-1ra, intraperitoneally, for 8 consecutive weeks. The placebo mice were injected with saline only. As normal controls, ddY mice, which were not treated with IL-1ra or saline, were killed at 6 weeks of age. Results showed a significant reduction of proteinuria in the IL-1ra-treated mice, compared with saline-treated mice (urinary albumin/creatinine, 0.24 +/- 0.04 v 0.39 +/- 0.03, P < 0.001). A significant improvement of renal 51Cr-EDTA (ethylenediaminetetra-acetic acid) clearance was observed in the IL-1ra-treated mice (t1/2, 12 +/- 2.7 minutes, compared with saline-treated mice 25 +/- 2.0 minutes, P < 0.001). Similarly, serum levels of creatinine (1.0 +/- 0.4 v 2.4 +/- 0.3 mg/dL, P < 0.001) and urea nitrogen (46 +/- 6 v 58 +/- 2 mg/dL, P < 0.01) were significantly lower in IL-1ra-treated mice than in saline-treated mice. In renal tissue studies, the IL-1ra-treated mice exhibited significantly decreased mesangial cell proliferation, compared with saline-treated mice (P < 0.001), as shown by light and electron microscopy. In addition, the IL-1ra-treated mice showed significantly lower glomerular expression of collagen type IV, fibronectin, laminin, and IL-6 (P < 0.001) than saline-treated mice, although they still showed higher glomerular expression of collagen type IV (P < 0.01), fibronectin (P < 0.01), laminin (P < 0.001), IL-1 (P < 0.001), and IL-6 (P < 0.01) than did normal control mice. Meanwhile, glomerular C3 deposition was significantly lower in IL-1ra-treated mice than in saline-treated mice (P < 0.001). These findings indicate that IL-1ra partially prevented the progression of spontaneously occurring IgAN in this experimental model. Data from these experiments also confirm the pathogenic effects of IL-1 in the established phase of IgAN in ddY mice.
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Affiliation(s)
- A Chen
- Department of Pathology, Tri-Service General Hospital, Taipei, Taiwan, Republic of China
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18
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Liang SC, Lin SZ, Yu JF, Wu SF, Wang SD, Liu JC. F344-rnu/rnu athymic rats: breeding performance and acceptance of subcutaneous and intracranial xenografts at different ages. Lab Anim Sci 1997; 47:549-53. [PMID: 9355102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- S C Liang
- Department of Surgery, Tri-Service General Hospital, Taipei, Taiwan, Republic of China
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19
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Chen YJ, Liang SC. Diagnostic efficacy of ultrasonography in stage I posterior tibial tendon dysfunction: sonographic-surgical correlation. J Ultrasound Med 1997; 16:417-423. [PMID: 9315187 DOI: 10.7863/jum.1997.16.6.417] [Citation(s) in RCA: 22] [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] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The purpose of this study is to evaluate the diagnostic efficacy of ultrasonography in stage I posterior tibial tendon dysfunction. Fourteen of the 17 consecutive patients who underwent tenosynovectomy for stage I posterior tibial tendon dysfunction were included in this study. The preoperative diagnosis was based primarily on the clinical suspicion of dysfunction, which was confirmed by ultrasonography. Two measurements were obtained at the midpoint between the insertion site and the medial malleolus in both feet of the 14 patients: the diameter of the posterior tibial tendon and the diameter of the tendon sheath measured from its inner walls. The mean diameter of the tendon was 4.61 +/- 0.50 mm and that of the tendon sheath in the symptomatic foot was 7.24 +/- 0.75. In the unaffected foot, the mean diameter of the tendon was 3.30 +/- 0.34 mm and that of the tendon sheath was 3.64 +/- 0.35 mm, respectively. In the symptomatic tendon, the increase of peritendinous space was significantly higher than the increase in the tendinous portion (P < 0.0001). Surgical findings proved the accuracy of diagnosis in all patients. Although many cases of stage I posterior tibial tendon dysfunction remain undiagnosed owing to the mild clinical symptoms, this series indicates that ultrasonography is a valuable adjunctive diagnostic tool in the clinical examination and assists in achieving an accurate diagnosis of stage I posterior tibial tendon dysfunction, allowing early treatment.
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Affiliation(s)
- Y J Chen
- Department of Orthopedic Surgery, Chang Gung Memorial Hospital, Taipei, Taiwan
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20
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Chen YJ, Liang SC, Huang TJ, Hsu KY, Hsu RW. Fragment of entire posterior talar process as an obstacle to reduction of an anterior talar subluxation: case report. J Trauma 1997; 42:314-7. [PMID: 9042889 DOI: 10.1097/00005373-199702000-00024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Y J Chen
- Department of Orthopedic Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan, R.O.C
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21
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Chen YL, Wang TC, Liang SC, Teng CM, Tzeng CC. Synthesis and evaluation of coumarin alpha-methylene-gamma-butyrolactones: a new class of platelet aggregation inhibitors. Chem Pharm Bull (Tokyo) 1996; 44:1591-5. [PMID: 8795278 DOI: 10.1248/cpb.44.1591] [Citation(s) in RCA: 18] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
In a search for new inhibitors of platelet aggregation, certain coumarin-bearing alpha-methylene-gamma-butyrolactones were synthesized and evaluated for inhibitory activity against thrombin (Thr)-, arachidonic acid (AA)-, collagen (Col)-, and platelet-activating factor (PAF)-induced aggregation in washed rabbit platelets. These compounds were efficiently synthesized from commercially available 7-hydroxycoumarin or its derivatives. Among them, 7-[(2,3,4,5-tetrahydro-4-methylene-5-oxo-2-phenyl-2-furanyl) methoxy]-2H-1-benzopyran-2-one (3d) showed the most potent inhibition of AA- and PAF- induced aggregation, with IC50 values of 3.65 and 16.36 microM respectively.
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Affiliation(s)
- Y L Chen
- School of Chemistry, Kaohsiung Medical College, Taiwan, Republic of China
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22
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Liang SC, Schoeb TR, Davis JK, Simecka JW, Cassell GH, Lindsey JR. Comparative severity of respiratory lesions of sialodacryoadenitis virus and Sendai virus infections in LEW and F344 rats. Vet Pathol 1995; 32:661-7. [PMID: 8592801 DOI: 10.1177/030098589503200607] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
In several chronic diseases, lesions are more severe in LEW rats than in F344 rats. To determine whether or not acute viral diseases also are more severe in LEW rats than in F344 rats, we inoculated 6-7-week-old LEW and F344 rats with 10(7.2) cell culture infective units of sialodacryoadenitis virus or 10(4.7) infective units of Sendai virus. Twenty-four rats of each strain were given each virus. Lesions in nasal passages, tracheas, intrapulmonary airways, and pulmonary alveoli in 6 or 12 rats inoculated with each virus were assessed by scoring 5, 10, and 14 days after inoculation. Both viruses caused typical patchy necrotizing rhinitis, tracheitis, bronchitis, and bronchiolitis, with multifocal pneumonitis, in rats of both strains. Mean lesion indices for LEW rats given sialodacryoadenitis virus were significantly different from those for F344 rats for nasal passages on days 10 (0.999 vs. 0.680) and 14 (0.736 vs. 0.278), bronchi on day 5 (0.479 vs. 0.361), and alveoli on day 5 (0.677 vs. 0.275). Lesion indices for LEW rats given Sendai virus were significantly different from those for F344 rats for nasal passages on days 10 (1.000 vs. 0.611) and 14 (0.778 vs. 0.583); trachea on day 10 (0.625 vs. 0.028); bronchi on days 5 (0.476 vs. 0.331), 10 (0.123 vs. 0.013), and 14 (0.038 vs. 0); and alveoli on days 5 (0.413 vs. 0.114) and 10 (0.185 vs. 0.020). Thus, at the tested doses, both viruses caused more severe respiratory tract lesions in LEW rats than in F344 rats.
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Affiliation(s)
- S C Liang
- Department of Comparative Medicine, University of Alabama at Birmingham, USA
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23
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Liang SC, Lian WC, Leu FJ, Lee PJ, Chao AJ, Hong CC, Chen WF. Epizootic of low-virulence hepatotropic murine hepatitis virus in a nude mice breeding colony in Taiwan. Lab Anim Sci 1995; 45:519-22. [PMID: 8569149] [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: 01/31/2023]
Abstract
A natural outbreak of mouse hepatitis virus infection developed in a breeding colony of nude mice in Taiwan. The outbreak was unique in that morbidity was high in both adult and suckling mice, but only sucklings died. In contrast, all suckling heterozygous (nu/+) mice survived, and no lesions were found in adult female heterozygous (nu/+) mice. Adult male nude mice had chronic, active, necrotizing hepatitis with syncytial giant cells, but no lesions were detected in other tissues. Immunohistochemistry with anti-A59 and anti-JHM serum revealed mouse hepatitis virus antigen in the liver of infected adult and suckling nude mice, although less intensively in the kidney of adult nude mice. Suckling BALB/c mice inoculated with filtrates of the liver of adult nude mice developed hepatitis similar to that in the naturally infected nude mice. Virus was isolated by inoculating cell-free liver filtrate from infected adult nude mice onto 3T3 cells. Electron microscopy of purified virus revealed 100-nm-diameter enveloped particles with characteristic petal-shaped surface projections. We conclude that the outbreak was caused by a weakly virulent, highly hepatotropic murine hepatitis virus.
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Affiliation(s)
- S C Liang
- Laboratory Animal Center, National Defense Medical Center, Taipei, Taiwan, Republic of China
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24
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Chen WF, Soong MM, Liang SC, Wang DM. Cytochalasin B changes the cytoskeletal organization in Newcastle disease virus-infected cells. Proc Natl Sci Counc Repub China B 1986; 10:137-44. [PMID: 3092258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The microfilament structures of Newcastle disease virus (NDV)-infected BHK-21 cells were studied in the presence (5 micrograms/ml) or absence of cytochalasin B (CB) by means of phase contrast, indirect immunofluorescence and thin-section immunoelectron microscopy. The results indicated that CB treatment not only impaired virus infections titers and antiactin fluorescence strength but also disrupted cytoplasmic membrane and untagged ferritin-conjugated antibody on the surface of NDV specific antigens.
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25
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Chen WF, Liang SC, Hsu TL. Leukocyte migration-inhibition agarose test in swine after vaccination and challenge with inactivated and activated pseudorabies virus. Zhonghua Min Guo Wei Sheng Wu Ji Mian Yi Xue Za Zhi 1982; 15:185-92. [PMID: 6291874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Cell-mediated immunity to pseudorabies virus (PrV) was studied by means of the leukocyte migration-inhibition (LMI) agarose test. Migration of leukocytes from swine vaccinated with 10 TCID50 inactivate PrV and from normal control swine was not inhibited in the presence of specific PrV antigen. Cellular immune responses were detected in 80% of the vaccinated and 40% of the control group animals at the 1st week after challenge exposure. At the 2nd week, both groups of swine showed a peak level (p less than 0.001) immune response in the LMI test. This level of response remained until the 3rd week in the vaccinated group and the 2nd week in the control group. The averages of migration indices at the 1st, 2nd, 3rd and 4th weeks after challenge exposure were 0.74, 0.22, 0.60 and 0.89 in the vaccinated and 0.82, 0.29, 1.01 and 1.12 in the control group, respectively. Low concentrations of virus-neutralizing (VN) antibodies were present in 30% of the vaccinated swine at the 1st week, and 60% at the 2nd week after vaccination. Anamnestic antibody and primary VN antibody responses occurred after challenge in vaccinated and normal swine, respectively.
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Liang SC, Liang CL, Liang CS. [Intramedullary Ender's nail fixation of tibial fractures ]. Taiwan Yi Xue Hui Za Zhi 1982; 81:470-7. [PMID: 6956661] [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: 01/22/2023]
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27
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Lo GS, Liang SC, Raha SR, Hunter JB, Longenecker JB. Biochemical and neurological effects of an experimental phenylketonuria-like condition in infant rats during the first 2 weeks after birth. Am J Clin Nutr 1981; 34:498-506. [PMID: 6164289 DOI: 10.1093/ajcn/34.4.498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
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28
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Liang SC, Liang CL, Liang CS. [Galeazzi's fracture. Report of 22 cases (author's transl)]. Taiwan Yi Xue Hui Za Zhi 1980; 79:421-6. [PMID: 6931189] [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: 01/22/2023]
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29
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Liang SC, Liang CS, Shen YS. [Simplified external skeletal fixation of lower leg fractures. Experience in using self-curing resin in 7 cases]. Taiwan Yi Xue Hui Za Zhi 1977; 76:398-405. [PMID: 267729] [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: 12/14/2022]
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30
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Shen YS, Liang CS, Liang SC. [Compression plate in the treatment of lower extremity fracture - analysis of 199 cases]. Taiwan Yi Xue Hui Za Zhi 1976; 75:363-6. [PMID: 1068213] [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: 12/25/2022]
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