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Liang HL, Gao YD. [Role of allergen immunotherapy in the prevention of allergic asthma]. Zhonghua Yu Fang Yi Xue Za Zhi 2023; 57:1309-1315. [PMID: 37743289 DOI: 10.3760/cma.j.cn112150-20230331-00251] [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: 09/26/2023]
Abstract
The prevalence of allergic asthma is still increasing, which affects the quality of life of patients, threatens their lives, and brings enormous social and economic burden. Allergen immunotherapy (AIT) is the only treatment that can alter the progression of the "Atopic March". It has been widely used in the treatment of allergic rhinitis and conjunctivitis, and its role and effect in the treatment of allergic asthma have been gradually recognized. A few studies have shown that AIT may have a preventive effect on the development and progression of allergic asthma. In this article, the definition of tertiary prevention of allergic asthma is described, and the respective role of AIT in primary, secondary and tertiary prevention of allergic asthma is summarized and analyzed. The aim of this article is to provide evidence for the prevention and control of allergic asthma.
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Affiliation(s)
- H L Liang
- Department of Allergy, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Y D Gao
- Department of Allergy, Zhongnan Hospital of Wuhan University, Wuhan 430071, China Department of Allergy, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
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Qiu N, Jin H, Cui L, Zhan YT, Xia HM, Jiang M, Zhou J, Liang HL, Ao X, He ZM, Li HS. IFT20 Confers Paclitaxel Resistance by Triggering β-arrestin-1 to Modulate ASK1 Signaling in Breast Cancer. Mol Cancer Res 2023; 21:214-227. [PMID: 36573960 DOI: 10.1158/1541-7786.mcr-22-0289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 09/20/2022] [Accepted: 12/09/2022] [Indexed: 12/28/2022]
Abstract
ABSTRACT System paclitaxel-based chemotherapy is the first-line treatment regimen of defense against breast cancer, but inherent or acquired chemotherapy resistance remains a major obstacle in breast cancer therapy. Elucidating the molecular mechanism of chemoresistance is essential to improve the outcome of patients with breast cancer. Here, we demonstrate that intraflagellar transport 20 (IFT20) is positively associated with shorter relapse-free survival in patients with system paclitaxel-based chemotherapy. High-expressed IFT20 in breast cancer cells increases resistance to cell death upon paclitaxel treatment; in contrast, IFT20 knockdown enhances apoptosis in breast cancer cells in response to paclitaxel. Mechanistically, IFT20 triggers β-arrestin-1 to bind with apoptosis signal-regulating kinase 1 (ASK1) and promotes the ubiquitination of ASK1 degradation, leading to attenuating ASK1 signaling and its downstream JNK cascades, which helps cells to escape from cell death during paclitaxel treatment. Our results reveal that IFT20 drives paclitaxel resistance through modulating ASK1 signaling and identifies IFT20 as a potential molecular biomarker for predicting the response to paclitaxel therapeutic in breast cancer. IMPLICATIONS IFT20 drives paclitaxel resistance through modulating ASK1 signaling and IFT20 may act as a potential molecular biomarker for predicting the response to paclitaxel therapeutic in breast cancer.
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Affiliation(s)
- Ni Qiu
- Department of Breast Oncology Surgery, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Huan Jin
- Department of Breast Oncology Surgery, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Lulu Cui
- Department of Breast Oncology Surgery, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Yong-Tao Zhan
- Department of Breast Oncology Surgery, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Hao-Ming Xia
- Department of Breast Oncology Surgery, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Ming Jiang
- Department of Breast Oncology Surgery, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Jie Zhou
- Department of Breast Oncology Surgery, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Hong-Ling Liang
- Department of Breast Oncology Surgery, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Xiang Ao
- Department of Breast Oncology Surgery, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Zhi-Min He
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University; Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation; Guangzhou Key Laboratory of Translational Medicine on Malignant Tumor Treatment, Guangzhou, Guangdong, P.R. China
| | - Hong-Sheng Li
- Department of Breast Oncology Surgery, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
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Feng HB, Chen Y, Xie Z, Jiang J, Zhong YM, Guo WB, Yan WQ, Lv ZY, Lu DX, Liang HL, Xu FP, Yang JJ, Yang XN, Zhou Q, Zhang DK, Zhang Z, Chuai SK, Zhang HH, Wu YL, Zhang XC. High SHP2 expression determines the efficacy of PD-1/PD-L1 inhibitors in advanced KRAS mutant non-small cell lung cancer. Thorac Cancer 2021; 12:2564-2573. [PMID: 34490728 PMCID: PMC8487814 DOI: 10.1111/1759-7714.14137] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 08/18/2021] [Accepted: 08/18/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Src homology region 2 domain-containing phosphatase 2 (SHP2) is a novel target for Kirsten rat sarcoma oncogene (KRAS) mutant cancer. We retrospectively studied the significance of SHP2 in KRAS mutant non-small cell lung cancer (NSCLC) treated with immunotherapy and its relationship with tumor microenvironment (TME). METHODS Sixty-one advanced KRAS mutant NSCLC patients who underwent immunotherapy were enrolled. Next-generation sequencing (NGS) was used to profile mutation status. The expression of SHP2, phospho-SHP2 (pSHP2), and programmed death ligand 1 (PD-L1) were analyzed by immunohistochemistry (IHC). Quantitative multiplexed immunofluorescence cytochemistry (mIFC) analysis was conducted to describe the TME. RESULTS SHP2 was heterogeneously expressed in 32 samples in both tumor cells and immune cells and highly expressed (H-score >10) in 25 (78.1%) samples. The expression levels of SHP2 and pSHP2 were positively correlated. Stromal SHP2 (s-SHP2) was higher in tumors with PD-L1 ≥50% versus PD-L1 <50% (p = 0.039). By quantitative mIFC analysis, the expression of s-SHP2 had positive correlation with CD8, CD4, CD68, and PD-L1 levels in stromal area. Patients with high SHP2 expression made up 100.0% of the partial respond (PR) and 80.0% of the stable disease (SD), whereas 50.0% of the progress disease (PD). High SHP2 expression was associated with longer progression-free survival (PFS) and overall survival (OS) (p < 0.001, p = 0.013). Patients with high expression of both SHP2 and PD-L1 had longer PFS (p < 0.001). CONCLUSION High SHP2 expression could predict the efficacy of immunotherapy and better survival in advanced KRAS mutant NSCLC. SHP2 may function in both tumor cells and immune cells, warranting further study on the potential diverse effects of SHP2 inhibition in TME.
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Affiliation(s)
- Hui-Bo Feng
- Guangdong Lung Cancer Institute, Guangdong Provincial Key Laboratory of Translational Medicine in Lung Cancer, Medical Research Institute, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, China
| | - Yu Chen
- Guangdong Lung Cancer Institute, Guangdong Provincial Key Laboratory of Translational Medicine in Lung Cancer, Medical Research Institute, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, China
| | - Zhi Xie
- Guangdong Lung Cancer Institute, Guangdong Provincial Key Laboratory of Translational Medicine in Lung Cancer, Medical Research Institute, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, China
| | - Jie Jiang
- Guangdong Lung Cancer Institute, Guangdong Provincial Key Laboratory of Translational Medicine in Lung Cancer, Medical Research Institute, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, China
| | - Yu-Min Zhong
- Guangdong Lung Cancer Institute, Guangdong Provincial Key Laboratory of Translational Medicine in Lung Cancer, Medical Research Institute, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, China
| | - Wei-Bang Guo
- Guangdong Lung Cancer Institute, Guangdong Provincial Key Laboratory of Translational Medicine in Lung Cancer, Medical Research Institute, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, China
| | - Wen-Qing Yan
- Guangdong Lung Cancer Institute, Guangdong Provincial Key Laboratory of Translational Medicine in Lung Cancer, Medical Research Institute, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, China
| | - Zhi-Yi Lv
- Guangdong Lung Cancer Institute, Guangdong Provincial Key Laboratory of Translational Medicine in Lung Cancer, Medical Research Institute, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, China
| | - Dan-Xia Lu
- Guangdong Lung Cancer Institute, Guangdong Provincial Key Laboratory of Translational Medicine in Lung Cancer, Medical Research Institute, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, China
| | - Hong-Ling Liang
- Department of Surgical Oncology, Affiliated Cancer Hospital and Institute of Guangzhou Medical University, Guangzhou, China
| | - Fang-Ping Xu
- Department of Pathology and Laboratory Medicine, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Jin-Ji Yang
- Guangdong Lung Cancer Institute, Guangdong Provincial Key Laboratory of Translational Medicine in Lung Cancer, Medical Research Institute, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, China.,The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Xue-Ning Yang
- Guangdong Lung Cancer Institute, Guangdong Provincial Key Laboratory of Translational Medicine in Lung Cancer, Medical Research Institute, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, China
| | - Qing Zhou
- Guangdong Lung Cancer Institute, Guangdong Provincial Key Laboratory of Translational Medicine in Lung Cancer, Medical Research Institute, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, China.,The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Dong-Kun Zhang
- Department of Thoracic Surgery, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, Guangzhou, China
| | | | | | | | - Yi-Long Wu
- Guangdong Lung Cancer Institute, Guangdong Provincial Key Laboratory of Translational Medicine in Lung Cancer, Medical Research Institute, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, China.,The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Xu-Chao Zhang
- Guangdong Lung Cancer Institute, Guangdong Provincial Key Laboratory of Translational Medicine in Lung Cancer, Medical Research Institute, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, China
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Pan HB, Wong KF, Hsu GC, Liang HL. The type of digital mammography is an influencing factor for the performance of national screening. Eur J Public Health 2015. [DOI: 10.1093/eurpub/ckv175.173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Huang JQ, Liang HL, Jin TE, Xie Z. Altered expression profile of apoptosis-related molecules correlated with clinicopathological factors in non-small-cell lung cancer. Int J Clin Exp Pathol 2015; 8:11278-11286. [PMID: 26647102 PMCID: PMC4637667] [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] [Subscribe] [Scholar Register] [Received: 08/02/2015] [Accepted: 08/28/2015] [Indexed: 06/05/2023]
Abstract
Apoptosis-related molecules can be abnormally expressed in cancers and underscore the hallmark of resisting cell death in cancer cells. This study was aimed to observe the expression patterns of apoptosis-related molecules in lung cancer and paired non-cancerous tissues, and to observe if there is a correlation between the expression of these apoptotic molecules and clinicopathologic parameters. Immunohistochemistry (IHC) was performed to analyze the expression level of CASP3, CASP8, CASP9, PARP1, Cleaved CASP3 (C-CASP3), Cleaved PARP1 (C-PARP1), XIAP, BIRC5 (Survivin) and BCL2 in lung cancer and paired non-cancerous tissues. We found that apoptosis-related molecules CASP3, CASP9, BCL2, BIRC5 and PARP1 are abnormally expressed in lung cancer cells and their expression were correlated with histology. BCL2, BIRC5 and PARP1 are expressed at higher levels in SCC than in non-SCC. C-PARP1 expression might be an independent prognostic factor for NSCLC.
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Affiliation(s)
- Jian-Qing Huang
- Cancer Center of Guangzhou Medical University Guangzhou 510095, China
| | - Hong-Ling Liang
- Cancer Center of Guangzhou Medical University Guangzhou 510095, China
| | - Tian-En Jin
- Cancer Center of Guangzhou Medical University Guangzhou 510095, China
| | - Zhi Xie
- Guangdong Lung Cancer Institute, Guangdong General Hospital Guangzhou 510080, China
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Ma Q, Wang HF, Xing CJ, Ma HC, Gong ML, Sun L, Liang HL. [Effects of tank operation on renal function of crews]. Zhongguo Ying Yong Sheng Li Xue Za Zhi 2014; 30:475-477. [PMID: 25571647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To explore the effects of harmful factors in tank cabins on renal function of tank crews. METHODS One hundred and fifty two tank crews as the observation group and 37 soldiers without tank environment exposure as control group were selected in the study. α1-microglobulin(α1-MG), β2-microglobulin(β2-MG), IgG, N-acetyl-β-glucosidase (NAG) and urinary albumin excretion rate (UAER) in morning and 24 h urine were measured. RESULTS Compared to the control group, the levels of α1-MG, β2-MG, NAG, UAER in observation group were increased significantly (P < 0.05). β2-MG, NAG, UAER of Soldiers with more than 50 motorized hours in observation group were significantly higher than those of control group (P < 0.05). β2-MG, NAG and UAER of soldiers divorced from tank occupation more than 3 years decreased to the normal levels. β2-MG of soldiers divorced from tank occupation more than 10 years was significantly higher than that of 6-10 years group. CONCLUSION Tank occupational exposure influences the renal function of tank crews but not to a degree of clinical kidney disease. The renal function of crews divorced from tank occupation may recover but dysfunction of renal tubular reabsorption still exists.
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Affiliation(s)
- Qiang Ma
- Department of Geriatric Nephrology, PLA General Hospital, Beijing, China.
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Ye JH, Jin J, Liang HL, Lu JL, Du YY, Zheng XQ, Liang YR. Using tea stalk lignocellulose as an adsorbent for separating decaffeinated tea catechins. Bioresour Technol 2009; 100:622-628. [PMID: 18710802 DOI: 10.1016/j.biortech.2008.07.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2008] [Revised: 07/01/2008] [Accepted: 07/02/2008] [Indexed: 05/26/2023]
Abstract
Lignocelluloses prepared from woody tea stalk, pine sawdust and sugarcane bagasse were used as adsorbents to isolate decaffeinated catechins from tea extracts and compared with synthetic macroporous resin HPD 600. HPD 600 had the highest adsorption capacity to catechins, followed by tea stalk lignocellulose while lignocelluloses of pine sawdust and bagasse the least. Tea stalk lignocellulose absorbed preferentially tea catechins and showed a good selectivity. HPD 600 absorbed caffeine and tea catechins simultaneously. The kinetics data of tea stalk lignocellulose showed a good fit with the Langmuir isotherm model. It is considered that tea stalk lignocellulose is an alternative low-cost adsorbent for preparing decaffeinated tea catechins.
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Affiliation(s)
- J H Ye
- Zhejiang University, Tea Research Institute, 268 Kaixuan Road, Hangzhou 310029, China
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Lai PH, Weng HH, Chen CY, Hsu SS, Ding S, Ko CW, Fu JH, Liang HL, Chen KH. In vivo differentiation of aerobic brain abscesses and necrotic glioblastomas multiforme using proton MR spectroscopic imaging. AJNR Am J Neuroradiol 2008; 29:1511-8. [PMID: 18499784 PMCID: PMC8119023 DOI: 10.3174/ajnr.a1130] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND AND PURPOSE Abscesses caused by aerobic bacteria (aerobic abscesses) can simulate intracranial glioblastomas multiforme (GBMs) in MR imaging appearance and single voxel (SV) proton MR spectroscopy of the central cavity. The purpose of our study was to determine whether MR spectroscopic imaging (SI) can be used to differentiate aerobic abscesses from GBMs. Our hypothesis was that metabolite levels of choline (Cho) are decreased in the ring-enhancing portion of abscesses compared with GBMs. MATERIALS AND METHODS Fifteen patients with aerobic abscesses were studied on a 1.5T MR scanner using an SV method and an SI method. Proton MR spectra of 15 GBMs with similar conventional MR imaging appearances were used for comparison. The resonance peaks in the cavity, including lactate, cytosolic amino acids, acetate, succinate, and lipids, were analyzed by both SV MR spectroscopy and MRSI. In the contrast-enhancing rim of each lesion, peak areas of N-acetylaspartate (NAA), choline (Cho), lipid and lactate (LL), and creatine (Cr) were measured by MRSI. The peak areas of NAA-n, Cho-n, and Cr-n in the corresponding contralateral normal-appearing (-n) brain were also measured. Maximum Cho/Cr, Cho/NAA, LL/Cr-n, and Cho/Cho-n and minimum Cr/Cr-n and NAA/NAA-n ratios in abscesses and GBMs were compared using the Wilcoxon rank sum test. After receiver operating characteristic curve analysis, diagnostic accuracy was compared. RESULTS Cytosolic amino acid peaks were found in the cavity in 7 of 15 patients with aerobic abscesses. Means and SDs of maximum Cho/Cr, Cho/NAA, LL/Cr-n, and Cho/Cho-n and minimum Cr/Cr-n and NAA/NAA-n ratios were 3.38 +/- 1.09, 3.88 +/- 2.13, 2.72 +/- 1.45, 1.98 +/- 0.53, 0.53 +/- 0.16, and 0.44 +/- 0.09, respectively, in the GBMs, and 1.77 +/- 0.49, 1.48 +/- 0.51, 2.11 +/- 0.67, 0.81 +/- 0.21, 0.48 +/- 0.2, and 0.5 +/- 0.15, respectively, in the abscesses. Significant differences were found in the maximum Cho/Cr (P = .001), Cho/NAA (P = .006), and Cho/Cho-n ratios (P < .001) between abscesses and GBMs. Diagnostic accuracy was higher by Cho/Cho-n ratio than Cho/Cr and Cho/NAA ratios (93.3% versus 86.7% and 76.7%). CONCLUSION Metabolite ratios and maximum Cho/Cho-n, Cho/Cr, and Cho/NAA ratios of the contrast-enhancing rim were significantly different and useful in differentiating aerobic abscesses from GBMs by MRSI.
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Affiliation(s)
- P H Lai
- Department of Radiology, Veterans' General Hospital, Kaohsiung, and School of Medicine, National Yang-Ming University, Taipei, Taiwan, Republic of China.
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Tsai WL, Cheng JS, Lai KH, Lin CP, Lo GH, Hsu PI, Yu HC, Lin CK, Chan HH, Chen WC, Chen TA, Li WL, Liang HL. Clinical trial: percutaneous acetic acid injection vs. percutaneous ethanol injection for small hepatocellular carcinoma--a long-term follow-up study. Aliment Pharmacol Ther 2008; 28:304-11. [PMID: 19086330 DOI: 10.1111/j.1365-2036.2008.03702.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND The long-term outcome of percutaneous acetic acid injection (PAI) and percutaneous ethanol injection (PEI) for treating small hepatocellular carcinoma (HCC) remains unclear. AIM To compare the long-term outcome of PAI vs. PEI for treating small HCC. METHODS From July 1998 to July 2004, 125 patients with small HCC were enrolled. Seventy patients receiving PAI and 55 patients receiving PEI were enrolled. There were no significant differences in the clinical characteristics between the two groups. Tumour recurrence and survival rates were assessed. RESULTS Mean follow-up time was 43 months. The local recurrence rate and new tumour recurrence rate were similar between the PAI and PEI groups. The PAI group had significantly better survival than the PEI group (P = 0.027). Multivariate analysis revealed that PAI was the significant factor associated with overall survival [PAI vs. PEI, RR: 0.639, 95% CI: (0.419-1.975), P = 0.038]. The treatment sessions required to achieve complete tumour necrosis were significantly fewer in the PAI group than in the PEI group (2.4 +/- 1.0 vs. 2.9 +/- 1.3, P = 0.018). CONCLUSION Percutaneous acetic acid injection required fewer treatment sessions than PEI and provided better survival after long-term follow-up.
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Affiliation(s)
- W L Tsai
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
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Liang HL, Whelan HT, Eells JT, Wong-Riley MTT. Near-infrared light via light-emitting diode treatment is therapeutic against rotenone- and 1-methyl-4-phenylpyridinium ion-induced neurotoxicity. Neuroscience 2008; 153:963-74. [PMID: 18440709 DOI: 10.1016/j.neuroscience.2008.03.042] [Citation(s) in RCA: 105] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2008] [Revised: 02/20/2008] [Accepted: 03/12/2008] [Indexed: 01/14/2023]
Abstract
Parkinson's disease is a common progressive neurodegenerative disorder characterized by the degeneration of dopaminergic neurons in the substantia nigra pars compacta. Mitochondrial dysfunction has been strongly implicated in the pathogenesis of Parkinson's disease. Thus, therapeutic approaches that improve mitochondrial function may prove to be beneficial. Previously, we have documented that near-infrared light via light-emitting diode (LED) treatment was therapeutic to neurons functionally inactivated by tetrodotoxin, potassium cyanide (KCN), or methanol intoxication, and LED pretreatment rescued neurons from KCN-induced apoptotic cell death. The current study tested our hypothesis that LED treatment can protect neurons from both rotenone- and MPP(+)-induced neurotoxicity. Primary cultures of postnatal rat striatal and cortical neurons served as models, and the optimal frequency of LED treatment per day was also determined. Results indicated that LED treatments twice a day significantly increased cellular adenosine triphosphate content, decreased the number of neurons undergoing cell death, and significantly reduced the expressions of reactive oxygen species and reactive nitrogen species in rotenone- or MPP(+)-exposed neurons as compared with untreated ones. These results strongly suggest that LED treatment may be therapeutic to neurons damaged by neurotoxins linked to Parkinson's disease by energizing the cells and increasing their viability.
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Affiliation(s)
- H L Liang
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA
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Yang SJ, Liang HL, Wong-Riley MTT. Activity-dependent transcriptional regulation of nuclear respiratory factor-1 in cultured rat visual cortical neurons. Neuroscience 2006; 141:1181-92. [PMID: 16753268 DOI: 10.1016/j.neuroscience.2006.04.063] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [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] [Received: 02/27/2006] [Revised: 04/20/2006] [Accepted: 04/22/2006] [Indexed: 10/24/2022]
Abstract
Nuclear respiratory factor 1 is a transcription factor involved in the regulation of mitochondrial biogenesis by activating the transcription of subunit genes of cytochrome oxidase and other respiratory enzymes. Very little is known of its role in neurons. To determine if neuronal activity regulates nuclear respiratory factor 1 expression, cultured primary neurons from postnatal rat visual cortex were subjected to 20 mM KCl depolarizing treatment for 1, 3, 5, and 7 h, or exposed to 7 h of KCl followed by withdrawal for 1, 3, 5, and 7 h. Nuclear respiratory factor 1 expression was analyzed by immunoblots, immunocytochemistry, quantitative electron microscopy, real-time quantitative PCR, and in situ hybridization. Nuclear respiratory factor 1 protein was expressed at relatively low basal levels in both the nucleus, where it was associated primarily with euchromatin, and in the cytoplasm, where it was localized to free ribosomes and occasionally to the Golgi apparatus and the outer nuclear membrane. Depolarizing treatment progressively up-regulated both nuclear respiratory factor 1 protein and mRNA in a time-dependent manner, increasing above controls after 1 h and remaining high at 3, 5, and 7 h. Both nuclear and cytoplasmic mRNA levels increased with stimulation, and there was an apparent cytoplasmic-to-nuclear translocation of protein. Following the withdrawal of KCl, both nuclear respiratory factor 1 message and protein were significantly reduced after 1 h. The message returned to basal levels by 5 h and the protein by 7 h. These results strongly indicate that the expression and compartmental redistribution of nuclear respiratory factor 1 protein and mRNA in visual cortical neurons are dynamic processes tightly controlled by neuronal activity.
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Affiliation(s)
- S J Yang
- Department of Cell Biology, Neurobiology, and Anatomy Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA
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Liang HL, Ongwijitwat S, Wong-Riley MTT. Bigenomic functional regulation of all 13 cytochrome c oxidase subunit transcripts in rat neurons in vitro and in vivo. Neuroscience 2006; 140:177-90. [PMID: 16542778 DOI: 10.1016/j.neuroscience.2006.01.056] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [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] [Received: 08/16/2005] [Revised: 12/29/2005] [Accepted: 01/06/2006] [Indexed: 10/24/2022]
Abstract
Cytochrome c oxidase is a multisubunit, bigenomically encoded inner mitochondrial membrane protein. Its enzymatic activity and amount in the brain vary with metabolic demands, but the precise regulation of all 13 subunits to form a functional holoenzyme in a 1:1 stoichiometry is not well understood. To determine if all 13 subunit transcripts were coordinately regulated by functional alteration in neurons, cultured primary neurons were depolarized by potassium chloride for 5-24 h, or tetrodotoxin inactivated for 2-6 days. In vivo studies were done on rats monocularly enucleated for 4 days to 2 weeks. Expressions of cytochrome c oxidase subunit mRNAs were measured by real-time quantitative polymerase chain reaction. Results showed that in vitro, all 13 transcripts were significantly up-regulated after 5 h of depolarizing stimulation. With tetrodotoxin blockade, however, the three mitochondrial-encoded transcripts were down-regulated earlier than the 10 nuclear ones (2 days versus 4 days). In vivo, all three mitochondrial-encoded subunit mRNAs were also down-regulated earlier than the nuclear ones in deprived visual cortex (4 days versus 1 week after monocular enucleation). Cytochrome c oxidase activity and protein levels were significantly decreased in parallel after 4 days of deprivation in vitro and 1 week in vivo. Our results are consistent with a coordinated mechanism of up-regulation of all 13 transcripts in response to functional stimulation, but an earlier and more severe down-regulation of the mitochondrial transcripts than the nuclear ones in response to functional deprivation. Thus, the mitochondrial subunits may play a more important role in regulating cytochrome c oxidase protein amount and activity in neurons. Our results also point to the need of all 13 subunits to form a functional holoenzyme.
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Affiliation(s)
- H L Liang
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA
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Liang HL, Whelan HT, Eells JT, Meng H, Buchmann E, Lerch-Gaggl A, Wong-Riley M. Photobiomodulation partially rescues visual cortical neurons from cyanide-induced apoptosis. Neuroscience 2006; 139:639-49. [PMID: 16464535 DOI: 10.1016/j.neuroscience.2005.12.047] [Citation(s) in RCA: 323] [Impact Index Per Article: 17.9] [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: 11/20/2005] [Revised: 12/19/2005] [Accepted: 12/20/2005] [Indexed: 11/26/2022]
Abstract
Near-infrared light via light-emitting diode treatment has documented therapeutic effects on neurons functionally inactivated by tetrodotoxin or methanol intoxication. Light-emitting diode pretreatment also reduced potassium cyanide-induced cell death, but the mode of death via the apoptotic or necrotic pathway was unclear. The current study tested our hypothesis that light-emitting diode rescues neurons from apoptotic cell death. Primary neuronal cultures from postnatal rat visual cortex were pretreated with light-emitting diode for 10 min at a total energy density of 30 J/cm2 before exposing to potassium cyanide for 28 h. With 100 or 300 microM potassium cyanide, neurons died mainly via the apoptotic pathway, as confirmed by electron microscopy, Hoechst 33258, single-stranded DNA, Bax, and active caspase-3. In the presence of caspase inhibitor I, the percentage of apoptotic cells in 300microM potassium cyanide was significantly decreased. Light-emitting diode pretreatment reduced apoptosis from 36% to 17.9% (100 microM potassium cyanide) and from 58.9% to 39.6% (300 microM potassium cyanide), representing a 50.3% and 32.8% reduction, respectively. Light-emitting diode pretreatment significantly decreased the expression of caspase-3 elicited by potassium cyanide. It also reversed the potassium cyanide-induced increased expression of Bax and decreased expression of Bcl-2 to control levels. Moreover, light-emitting diode decreased the intensity of 5-(and -6) chloromethy-2', 7-dichlorodihydrofluorescein diacetate acetyl ester, a marker of reactive oxygen species, in neurons exposed to 300 microM potassium cyanide. These results indicate that light-emitting diode pretreatment partially protects neurons against cyanide-induced caspase-mediated apoptosis, most likely by decreasing reactive oxygen species production, down-regulating pro-apoptotic proteins and activating anti-apoptotic proteins, as well as increasing energy metabolism in neurons as reported previously.
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Affiliation(s)
- H L Liang
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA
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Lai PH, Chen PC, Chang MH, Pan HB, Yang CF, Wu MT, Li JY, Chen C, Liang HL, Chen WL. In vivo proton MR spectroscopy of chorea-ballismus in diabetes mellitus. Neuroradiology 2001; 43:525-31. [PMID: 11512579 DOI: 10.1007/s002340100538] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The most common cause of chorea-ballismus (CB) is a vascular lesion; it is also associated with nonketotic hyperglycaemia in diabetes mellitus (DM) and may be the first manifestation of this disorder. We describe the CT, MRI and proton MR spectroscopy (1H-MRS) of CB in eight patients. Six had hemichorea-hemiballismus (HC-HB) and two bilateral CB. Single-voxel (SV) 1H-MRS was performed using point-resolved spectroscopy (PRESS). Voxels were positioned in the basal ganglia of the patients and control subjects. PRESS was also used to obtain spectroscopic imaging (1H-MRSI) of the slice of interest in two patients. CT showed a slightly dense striatum in all the patients with CB, and T1-weighted images revealed high signal. The CB correlated well with the neuroimaging findings. SV 1H-MRS showed the mean (+/- SD) N-acetylaspartate (NAA)/ creatine (Cr) ratio to be 1.45 +/- 0.19 in HC-HB and 1.82 +/- 0.06 on the opposite normal side (P = 0.01). The choline (Cho)/ Cr ratio was 1.3 +/- 0.12 in HC-HB and 1.11 +/- 0.13 on the opposite normal side (P = 0.005). A lactate peak was seen in seven patients. The NAA/Cr ratio was 1.44 +/- 0.15 in bilateral CB and 1.74 +/- 0.16 in the controls (P = 0.017); the Cho/Cr ratios were 1.36 +/- 0.1 and 1.19 +/- 0.07 (P = 0.015). The low NAA/Cr suggests neuronal loss or damage and the high Cho/Cr probably indicates gliosis. The presence of lactate may suggest mild ischaemia due to acute vascular events during hyperglycaemia and underlying chronic focal cerebrovascular diseases in DM.
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Affiliation(s)
- P H Lai
- Department of Radiology, Veterans General Hospital-Kaohsiung, National Yang-Ming College, Taiwan.
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Tiao WM, Yeh LR, Lu YC, Liang HL, Chen CK. Lipoma arborescens of the knee: a case report. J Formos Med Assoc 2001; 100:412-5. [PMID: 11480252] [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: 02/20/2023] Open
Abstract
Lipoma arborescens is a rare intraarticular lesion of unknown etiology. We describe the radiographic, computerized tomographic, and magnetic resonance (MR) imaging characteristics of lipoma arborescens in a 17-year-old boy presenting with chronic painful swollen knee. Histologic examination after surgical synovectomy confirmed the diagnosis of lipoma arborescens. The fatty nature and frond-like appearance of this lesion can be demonstrated on imaging studies, especially MR imaging. Open synovectomy is curative in most cases. Although lipoma arborescens is rare, it is important to recognize and differentiate it from other synovial lesions by MR imaging.
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Affiliation(s)
- W M Tiao
- Department of Radiology, Ton Yen General Hospital, Taiwan
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16
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Wu CJ, Liang HL, Chiou KR, Mar GY, Tseng CJ, Lin SL, Chiang HT, Liu CP. Significance of cardiac troponin I and creatine kinase release after coronary intervention. Zhonghua Yi Xue Za Zhi (Taipei) 2001; 64:343-50. [PMID: 11534802] [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: 02/21/2023]
Abstract
BACKGROUND Cardiac troponin I is a highly sensitive and specific marker for early detection of myocardial injury. Whether it can be used to monitor myocardial injury after coronary intervention is uncertain. This study was designed to measure the cardiac troponin I and creatine kinase (CK) after coronary intervention and investigate their clinical significance. METHODS We measured cardiac troponin I and CK levels before intervention and 4 hours, 8 hours, 12 hours and 24 hours after apparently successful coronary intervention in 106 eligible patients. Nine patients were excluded due to missing data. We also followed up the clinical outcome to record major cardiac events (MACE). RESULTS The frequency of cardiac troponin I increase after coronary intervention was higher than that of CK increase (40.2% vs 8.2%). The frequency of cardiac troponin I increase in the stent group was significantly higher than that in the PTCA group (49.2% vs 21.9%, p < 0.001). The frequency of cardiac troponin I increase was also higher than that of CK increase in patients with in-hospital events (58.8% vs 14.7%). CONCLUSIONS Cardiac troponin I is more sensitive than creatine kinase in detecting myocardial injury after coronary intervention. The incidence of cardiac troponin I increase is significantly higher in patients undergoing stenting than in patients treated with balloon angioplasty only. The cardiac troponin I increase is more highly correlated with in-hospital events than is creatine kinase.
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Affiliation(s)
- C J Wu
- Department of Internal Medicine, Kaohsiung Veterans General Hospital, Taiwan, ROC
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17
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Peng NJ, Mar GY, Liu CP, Jao GH, Lee D, Liang HL, Tsay DG, Chen CC, Liu RS. Does inadequate exercise lower the accuracy of myocardial perfusion scintigraphy? Nucl Med Commun 2001; 22:625-9. [PMID: 11403172 DOI: 10.1097/00006231-200106000-00004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The predictive accuracy of exercise myocardial perfusion scintigraphy (EMPS) in detecting coronary artery disease (CAD) in patients who fail to achieve an adequate level of exercise is not clear. This investigation was carried out in order to compare the sensitivity, specificity and accuracy of EMPS in adequate exercise patients with those in inadequate exercise patients. We have retrospectively compared the results of EMPS with coronary angiography (CAG). One hundred and forty-eight patients with both tests within 6 weeks were included. Adequate exercise was defined as > or = 85% maximally predicted heart rate for age. The overall sensitivity and specificity of EMPS to detect CAD were 92.5% (74/80) and 75%, (51/68), respectively. The sensitivity and specificity in adequate exercise patients were 94.1% (32/34) and 67.6% (23/34), whereas those in inadequate exercise patients were 91.3% (42/46) and 82.4% (28/34). The accuracy was 80.9% (55/68) and 87.5% (70/80), respectively. Patients with inadequate exercise had lower sensitivity but higher specificity of EMPS for detecting CAD, and achieved a higher accuracy than those with adequate exercise.
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Affiliation(s)
- N J Peng
- Department of Nuclear Medicine, Kaohsiung Veterans General Hospital, Taiwan.
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18
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Liang HL, Liang HL, Mar GY, Chiang HT, Liu CP. Computerized-tomography-guided percutaneous tumor ablation using acetic acid injection in an aldosterone-producing tumor--a novel therapy. Zhonghua Yi Xue Za Zhi (Taipei) 2000; 63:833-7. [PMID: 11155761] [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: 02/18/2023]
Abstract
We report the first case of an adrenocortical tumor that was successfully ablated using computerized tomography (CT)-guided percutaneous acetic acid injection. A 57-year-old woman presented with recurrent sudden onset of general weakness, polyuria, hypokalemia and low plasma renin activity with a high aldosterone level. The computerized tomogram and sonogram of the abdomen demonstrated a well-defined low-density tumor in the right adrenal gland. Under CT guidance, we successfully ablated the tumor using percutaneous acetic acid injection. This procedure took only 40 minutes and required only local anesthesia. The patient was up and walking the following day. During the next 2 years of clinical follow-up, there was no evidence of tumor recurrence.
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Affiliation(s)
- H L Liang
- Division of Cardiology, Department of Medicine, Kaohsiung Veterans General Hospital, Kaohsiung, 386 Ta-Chung 1st Road, Kaohsiung 813, Taiwan, ROC
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Chen CK, Chung CB, Yeh L, Pan HB, Yang CF, Lai PH, Liang HL, Resnick D. Carpal tunnel syndrome caused by tophaceous gout: CT and MR imaging features in 20 patients. AJR Am J Roentgenol 2000; 175:655-9. [PMID: 10954446 DOI: 10.2214/ajr.175.3.1750655] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.5] [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: 12/30/2022]
Abstract
OBJECTIVE The objective of this study is to describe the CT and MR imaging findings of gouty tophi in the wrist and present this entity as a cause of carpal tunnel syndrome. MATERIALS AND METHODS Retrospective review of the CT (n = 18) and MR imaging (n = 20) studies of the wrist in patients with a documented diagnosis of gout who presented with gout-related carpal tunnel syndrome was performed; images of 24 wrists were collected over a 5-year period. Patient population included 20 men, who ranged in age from 35 to 76 years. All images were reviewed by two musculoskeletal radiologists who reached a consensus opinion. Surgical correlation was available in 12 patients. RESULTS Tophi were found in the floor of the carpal tunnel (n = 18), carpal bones (n = 17), radiocarpal joint (n = 17), and extensor tendons or tendon sheaths (n = 16) of the wrist. All tophi showed similar signal characteristics (from low to intermediate signal intensity on T1-weighted images with heterogeneous signal intensity on T2-weighted images) with the exception of tophi in the floor of the carpal tunnel (low signal intensity on T2-weighted images). Varying degrees of calcification were noted on CT and MR imaging studies. Gadolinium-enhanced MR studies showed heterogeneous enhancement. CONCLUSION Gouty tophi should be entertained as a cause of carpal tunnel syndrome in the appropriate patient population. Familiarity with this entity and its imaging characteristics may prove helpful in diagnosis and preoperative planning.
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Affiliation(s)
- C K Chen
- Department of Radiology, Kaohsiung Veterans General Hospital, 386 Ta-Chung 1st Rd. Kaohsiung, 813 Taiwan
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Lai PH, Chang MH, Liang HL, Pan HB, Yang CF. Unusual signs for dural arteriovenous fistulas with diffuse basal ganglia and cerebral calcification. Zhonghua Yi Xue Za Zhi (Taipei) 2000; 63:329-33. [PMID: 10820913] [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: 02/16/2023]
Abstract
We present a case of multiple dural arteriovenous fistulas (AVFs) in a 60-year-old man with the chief complaint of worsening headache, altered mental status and progressively unsteady gait over the course of one year. Computerized tomography revealed diffuse, symmetric calcification in the bilateral basal ganglia and bilateral periventricular and subcortical white matter. Magnetic resonance imaging revealed multiple, enhanced, punctate and linear vessels. These images were due to reflux into the parenchymal veins in the dural AVF of the superior sagittal sinus within the basal ganglia and deep white matter of both cerebral hemispheres. Cerebral angiography disclosed multiple dural AVFs. The exact mechanism of basal ganglia and subcortical calcification is proposed to be an arterial steal phenomenon or persistent venous congestion, with calcification occurring in a chronic hypoperfused state or with dystrophic changes in the walls of congested veins.
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Affiliation(s)
- P H Lai
- Department of Radiology, Veterans General Hospital-Kaohsiung, Taiwan, ROC
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Liang HL, Yang CF, Pan HB, Lai KH, Cheng JS, Lo GH, Chen CK, Lai PH. Small hepatocellular carcinoma: safety and efficacy of single high-dose percutaneous acetic acid injection for treatment. Radiology 2000; 214:769-74. [PMID: 10715044 DOI: 10.1148/radiology.214.3.r00mr06769] [Citation(s) in RCA: 31] [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: 12/22/2022]
Abstract
PURPOSE To evaluate the safety and efficacy of single high-dose percutaneous acetic acid injection (PAI) for treatment of small (<3-cm-diameter) hepatocellular carcinoma (HCC). MATERIALS AND METHODS Eighteen patients with HCC (22 nodules; diameter range, 1.5-3.0 cm) underwent single PAI. With ultrasonographic or computed tomographic (CT) guidance, 4-11 mL of 50% acetic acid was slowly injected into the center of the nodule through a skinny multiple-side-hole needle. Follow-up was performed with helical contrast material-enhanced CT. Complications of high-dose PAI were recorded. RESULTS Seventeen nodules showed no local recurrence (follow-up, 6-29 months) after single PAI. At a mean follow-up of 15.6 months, mean tumor diameter was 2.1 cm and mean injected volume was 6.4 mL. Four nodules showed residual tumor (mean tumor diameter, 2.6 cm; mean injected volume, 5.8 mL). The mean ratio of injected to estimated volume of acetic acid was 1.21 in cases of successful single PAI and 0.72 in cases of local recurrence (P < .001). One patient with preexistent right portal venous thrombosis died of hepatic failure 37 days after PAI. Other complications included severe pain (11%), high fever (4%), and segmental wedge infarction (4%). CONCLUSION Single high-dose PAI is safe and effective for treatment of small HCC.
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Affiliation(s)
- H L Liang
- Department of Radiology, Kaohsiung Veterans General Hospital, Taiwan
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Liang HL, Pan HB, Lee YH, Huang JS, Wu TD, Chang CT, Liang HL, Yang TL, Yang CF. Small functional adrenal cortical adenoma: treatment with CT-guided percutaneous acetic acid injection--report of three cases. Radiology 1999; 213:612-5. [PMID: 10551251 DOI: 10.1148/radiology.213.2.r99nv10612] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [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: 11/11/2022]
Abstract
Two patients with Conn syndrome and one patient with Cushing syndrome underwent computed tomography (CT)-guided tumor ablation with a total of 5-11 mL of 50% acetic acid injected into their adrenal nodule (1.3-3.3 cm in diameter). No major complications were encountered during or after the procedure. All patients were symptom free with normal laboratory test results for at least 1-year follow-up. CT images showed complete cystic change with tumor size regression. Our preliminary results suggest that percutaneous acetic acid injection is a safe and effective alternative for treatment of small functional adrenal cortical adenoma.
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Affiliation(s)
- H L Liang
- Department of Radiology, Kaohsiung Veterans General Hospital, Taiwan, Republic of China.
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Chen CK, Liang HL, Lai PH, Yeh LR, Yang TL, Pan HB, Yang CF. Imaging diagnosis of insufficiency fracture of the sacrum. Zhonghua Yi Xue Za Zhi (Taipei) 1999; 62:591-7. [PMID: 10502849] [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: 02/14/2023]
Abstract
BACKGROUND Insufficiency fracture of the sacrum has been recognized as a major cause of lower back pain, especially in elderly osteoporotic patients with or without underlying malignancy and/or prior pelvic radiotherapy. Its diagnosis cannot be readily made from its nonspecific clinical features. Consequently some cases may be mistaken for bone metastases, causing patients to receive inappropriate diagnostic measures and management. Recognition of the spectrum of imaging features is the basis of correct diagnosis and treatment. METHODS The imaging studies of 14 cases (12 women and 2 men; age range, 60-84 years; mean age, 70 years) of sacral insufficiency fracture were reviewed retrospectively. These included 14 radiographs, six bone scintigraphs, eight computerized tomography (CT) scans and 12 magnetic resonance (MR) imaging studies. Six patients had a history of malignancy. Diagnosis was made by characteristic imaging findings, and clinical and radiographic follow-up for one to 3.5 years. RESULTS Five cases of sacral insufficiency fracture were suspected based on radiographic findings of fracture lines (2 cases) and focal sclerosis (3 cases). Seven cases were diagnosed by CT findings of linear fractures (7 cases) and focal sclerosis (2 cases). Nine MR examinations demonstrated characteristic vertical bands of marrow edema. A hypointense fracture line was identified in eight cases. The remaining two MR imaging studies disclosed nonspecific focal marrow edema. An early case, which appeared normal on CT scan, showed marrow edema on MR imaging. The positive and diagnostic rates were both 36% for plain radiographs, 88% for CT scans, and 100% and 83%, respectively, for MR images. CONCLUSIONS Plain radiographs are often unrewarding. Although MR imaging is the most sensitive tool, fracture lines are best demonstrated and diagnosed using CT. Due to the better diagnostic rate, popularity and cost effectiveness, CT is recommended as the definitive modality for confirming diagnosis of insufficiency fracture of the sacrum.
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Affiliation(s)
- C K Chen
- Department of Radiology, Veterans General Hospital-Kaohsiung, Taiwan, ROC
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Affiliation(s)
- P H Lai
- Department of Radiology, Veterans General Hospital-Kaohsiung, National Yang Ming University, Taiwan, Republic of China
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Abstract
PURPOSE To evaluate the safety and feasibility of transsplenic portal vein catheterization. MATERIAL AND METHODS Under ultrasonic guidance, percutaneous transsplenic splenic vein catheterization was performed in 17 patients. Two of the patients had minimal and 5 moderate ascites. In 11 patients, the platelet counts were over 50000/mm3 and the coagulation time normal or mildly prolonged, while 6 patients had either platelet counts of less than 50000/mm3 or moderately prolonged coagulation level. RESULTS Transsplenic portal catheterizations were successfully performed in 16 of the 1/patients (one failed because of small splenic size). Procedure-related complications occurred in 3 patients with 2 requiring one unit of packed RBC transfusion. The third patient accumulated minimal fluid in the left pleural space. Imaging studies within one week of the procedure were made in 8 patients. These examinations revealed an intrasplenic hematoma in 2 patients. One patient had a small amount of hemoperitoneum. No major complications occurred. CONCLUSION Transsplenic portal venous catheterization is a safe and feasible procedure.
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Affiliation(s)
- H L Liang
- Department of Radiology, Kaohsiung Veterans General Hospital, Taiwan, Republic of China
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Abstract
PURPOSE To evaluate the safety and feasibility of transsplenic portal vein catheterization. MATERIAL AND METHODS Under ultrasonic guidance, percutaneous transsplenic splenic vein catheterization was performed in 17 patients. Two of the patients had minimal and 5 moderate ascites. In 11 patients, the platelet counts were over 50000/mm3 and the coagulation time normal or mildly prolonged, while 6 patients had either platelet counts of less than 50000/mm3 or moderately prolonged coagulation level. RESULTS Transsplenic portal catheterizations were successfully performed in 16 of the 1/patients (one failed because of small splenic size). Procedure-related complications occurred in 3 patients with 2 requiring one unit of packed RBC transfusion. The third patient accumulated minimal fluid in the left pleural space. Imaging studies within one week of the procedure were made in 8 patients. These examinations revealed an intrasplenic hematoma in 2 patients. One patient had a small amount of hemoperitoneum. No major complications occurred. CONCLUSION Transsplenic portal venous catheterization is a safe and feasible procedure.
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Affiliation(s)
- H L Liang
- Department of Radiology, Kaohsiung Veterans General Hospital, Taiwan, Republic of China
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Yang CF, Tzeng WS, Chang JM, Liang HL, Huang JS, Pan HB, Lo GH, Cheng JS, Lai KH. Experience with transjugular intrahepatic portosystemic shunts for gastroesophageal variceal bleeding. Zhonghua Yi Xue Za Zhi (Taipei) 1996; 57:204-13. [PMID: 8935227] [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: 02/03/2023]
Abstract
BACKGROUND Variceal bleeding is a major life-threatening complication of cirrhosis of the liver. Transjugular intrahepatic portosystemic shunts (TIPS) have been accepted as an effective method for portal decompression. Experiences here with the use of TIPS for control of gastroesophageal variceal bleeding is presented. METHODS Sixteen TIPS procedures were performed for 15 patients who suffered from intractable gastroesophageal variceal bleeding. Nine cases (60%) were hepatitis-related cirrhosis of liver, four (27%) were alcoholic liver cirrhosis and two were cryptogenic in origin. Liver function tests revealed four patients were Child-Pugh's classification A, five were B and six, C. Twelve cases had received failed endoscopic management of varices; and one patient had recurrent variceal bleeding after devascularization. TIPS procedure was performed electively in nine cases and, as an emergency in six cases. RESULTS Fifteen of the 16 TIPS procedures attempted were successfully performed. The technically successful rate was 94% (15/16), but two cases with successful TIPS procedure expired at the end of the procedure from hypovolemic shock and acute respiratory distress, respectively; thus the completely successful rate was 81% (13/16), The initial bleeding control rate was 83% (5/6) for the six patients with active bleeding. Portal venous pressure was significantly decreased from 30.8 +/- 5.8 mmHg before TIPS to 21.7 +/- 6.0 mmHg after the procedure (P < 0.01) and the porto-systemic pressure gradient also significantly decreased from 23.0 +/- 3.6 mmHg to 11.9 +/- 2.7 mmHg after TIPS (P < 0.01). Recurrent variceal bleeding was noted in four patients (33%) and that was managed by percutaneous transluminal angioplasty (PTA) of shunt, placement of additional stent, second TIPS procedure and a devascularization operation. Hepatic encephalopathy was noted in three patients (25%) after TIPS. CONCLUSIONS TIPS is an effective method to control variceal bleeding caused by portal hypertension, especially when endoscopic or surgical management has failed or is contraindicated.
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Affiliation(s)
- C F Yang
- Department of Radiology, Veterans General Hospital-Kaohsiung, Taiwan, R.O.C
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Abstract
BACKGROUND/AIMS Endoscopic variceal ligation is a viable substitute for injection sclerotherapy. It is still not known how endoscopic variceal ligation may influence the portal venous system. To clarify this issue we investigated the impact of endoscopic variceal ligation on the pressure of the portal venous system. METHODS Twenty-nine patients with a history of esophageal variceal bleeding but without ascites were enrolled. All had cirrhosis; 63% of them were post-hepatitic. Ligation was performed at intervals of 2-3 weeks until all the varices were obliterated. Portal venograms were performed before institution of ligation and after variceal obliteration to assess venographic findings and pressure changes. The pressures of the main portal vein, splenic vein and superior mesenteric vein were recorded. RESULTS Twenty-five patients completed the study. A mean of 4.4 sessions (range: 2-7) of ligation over a period of 2 months was needed. Seventeen (68%) patients experienced elevated pressure and eight (32%) patients reduced pressure after ligation. Mean (median) pressure changes were as follows: portal venous pressure, 26.5 +/- 4.7 (25.0) mmHg vs. 28.2 +/- 7.2 (28.0) mmHg (p > 0.05); splenic venous pressure, 28.2 +/- 4.9 (26.0) mmHg vs. 29.0 +/- 6.8 (29.0) mmHg (p > 0.05); superior mesenteric venous pressure, 28.4 +/- 6.0 (27.0) mmHg vs. 29.5 +/- 7.0 (29.0) mmHg (p > 0.05). Five patients (20%) experienced rebleeding before variceal obliteration; all of them presented elevated portal pressures after variceal obliteration. Among the eight patients with decreased portal pressure, seven (87%) had other major collaterals apart from esophageal varices, compared to three out of the 17 (18%) patients with elevated portal pressure who had other major collaterals (p < 0.01). CONCLUSIONS Among patients receiving endoscopic variceal ligation, 68% experienced elevated portal pressure, while 32% had decreased portal pressure. Elevation of portal pressure after variceal ligation may be an important factor in variceal rebleeding. The presence of other major collaterals apart from esophageal varices may be responsible for the decrease in portal pressure after obliteration of esophagel varices.
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Affiliation(s)
- G H Lo
- Department of Medicine and Department of Radiology, National Yang-Ming Medical College, Taipei, Taiwan
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Chang HT, Mok KT, Lin CF, Liang HL. Intrahepatic arterioportal fistula stemming from percutaneous biliary drainage: unusual cause of postoperative massive hemobilia. J Clin Gastroenterol 1995; 21:76-8. [PMID: 7560841] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Affiliation(s)
- H T Chang
- Department of Surgery, Veterans General Hospital-Kaohsiung, National Yang-Ming University, Taiwan, Republic of China
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Qu D, Zhou FX, Liang HL. Water balloon-aided ultrasonography--application in the diagnosis of rectal cancer. J Tongji Med Univ 1988; 8:46-50. [PMID: 3058991 DOI: 10.1007/bf02887778] [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] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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31
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Fang ZX, Li RL, Qian Y, Liang HL. [Quantitative structure-activity relationships of the inhibition of Escherichia coli bacteria (1515) by 5-(substituted-benzyl)-2,4-diaminopyrimidines]. Yao Xue Xue Bao 1987; 22:23-7. [PMID: 3300163] [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: 01/05/2023]
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32
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Chen MH, Yao XJ, Wu JG, Liang HL, Chen BP. [Morphological characteristics during replication of human HSV-2 (Wu)]. Wei Sheng Wu Xue Bao 1985; 25:115-8. [PMID: 3017007] [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: 01/03/2023]
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Lee HP, Ng KS, Chan KH, Liang HL. Smoking in a local community in Singapore. Singapore Med J 1979; 20:323-9. [PMID: 505026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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