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Chen MF, Zhang JF, Ren XL, Liu Y, Huang L. [Retrospective analysis of perioperative anaphylactic shock induced by cefuroxime]. Zhonghua Nei Ke Za Zhi 2024; 63:406-411. [PMID: 38561287 DOI: 10.3760/cma.j.cn112138-20231103-00293] [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: 04/04/2024]
Abstract
This study investigated the characteristics and frequency of perioperative anaphylactic shock induced by cefuroxime, so as to provide a reference for the safe and rational use of cefuroxime in the perioperative period. Cases of perioperative anaphylactic shock caused by cefuroxime in our hospital from 2011 to 2021 were extracted from the Adverse Drug Reaction Monitoring System. Literature reporting adverse drug reactions (ADR) including cefuroxime-induced anaphylactic shock in perioperative settings was collected from the CNKI, VIP, Wanfang, PubMed, and Web of Science databases from their respective inception to May 2022. Statistical analysis was performed for all cases of cefuroxime-induced perioperative anaphylactic shock. A total of 31 patients were included [13 men (48.1%) and 14 women (51.9%)], most of whom were over 60 years old (n=16, 59.3%); 9 (29.0%) patients had a history of drug allergy; 5 (16.1%) patients had received skin tests, but with negative results; 28 (90.3%) patients received treatment intravenously; 22 (71.0%) patients were treated after anesthesia. For 20 (64.5%) patients the ADR occurred within 10 minutes after anesthesia. The main manifestations were hypotension, dyspnea, rash, and tachycardia. For all patients, symptoms resolved after withdrawal of the drug and active rescue, and there were no deaths. A history of allergy and skin test findings may have limitations in predicting perioperative anaphylactic shock caused by cefuroxime; greater vigilance should be exercised when using cefuroxime in the perioperative period. Close monitoring is recommended for patients undergoing treatment with cefuroxime. Rescue therapy should be administered for allergic shock, and suitable response measures must be taken in a timely manner to ensure the safety of patients.
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Affiliation(s)
- M F Chen
- Department of Infectious Disease, Peking University People's Hospital, Beijing 100044,China
| | - J F Zhang
- Department of Pharmacy, Peking University People's Hospital, Beijing 100044, China Department of Pharmacy, Tongliao Hospital, Tongliao 028000, China
| | - X L Ren
- Department of Pharmacy, Peking University People's Hospital, Beijing 100044, China
| | - Y Liu
- Department of Pharmacy, Peking University People's Hospital, Beijing 100044, China
| | - L Huang
- Department of Pharmacy, Peking University People's Hospital, Beijing 100044, China
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Chen MF, Piotrowska Z, Yu HA. POSing the question: MARIPOSA-2, do the ends justify the means? Ann Oncol 2024; 35:4-6. [PMID: 37972893 DOI: 10.1016/j.annonc.2023.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 11/07/2023] [Indexed: 11/19/2023] Open
Affiliation(s)
- M F Chen
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York
| | - Z Piotrowska
- Massachusetts General Hospital Cancer Center and Department of Medicine, Harvard Medical School, Boston
| | - H A Yu
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York; Department of Medicine, Weill Cornell Medical College, New York, USA.
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Wang YY, Shi ZM, Li GY, Zhang ZX, Jin JF, Chen MF, Han CF, Xu Y, Gao ZC, Guo SM. [Investigation of the chronic respiratory symptoms and pulmonary function of adult residents in Hongtong County, Shanxi Province]. Zhonghua Yu Fang Yi Xue Za Zhi 2023; 57:1571-1580. [PMID: 37859373 DOI: 10.3760/cma.j.cn112150-20221107-01075] [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: 10/21/2023]
Abstract
Objective: To investigate the chronic respiratory symptoms and pulmonary function of adult residents in 3 towns of Hongtong County, Shanxi Province, and to explore their risk factors. Methods: The investigation of chronic respiratory symptoms and lung function status of adult residents in Hongdong County is based on the regional population of the entire county in Hongdong County. The project was initiated by the Science and Technology Department of Linfen City and coordinated by the Hongdong County Government. The investigation will be conducted in 3 townships in Hongdong County, Linfen City, Shanxi Province from April to November 2021: Demographic characteristics, respiratory symptoms, smoking dust exposure and other personal history were collected through questionnaires. Physical examination, routine blood tests and lung function tests were also performed on each individual. SPSS 22.0 software was used to conduct t test, χ2 test, ANOVA or Kruskal-Wallis test for statistical analysis of the collected information. Results: 10 945 subjects aged 18-102 years were included in the analysis, of whom 3 754 (34.3%) were male, 1 222 (11.2%) had a history of dust exposure, 7 164 (65.5%) had used straw and firewood as cooking fuel, and 3 296 (30.1%) had a history of smoking. Among the participants, 394 (3.6%), 339 (3.1%), and 1 543 (14.1%) had respiratory symptoms such as chronic cough, sputum, and dyspnea. Statistics showed that the population with chronic respiratory symptoms was more elderly and had a smoking history, and the incidence of chronic respiratory symptoms was higher in those who smoked more than 40 packs a year (all P<0.05). Men with a history of dust exposure were more likely to suffer from chronic cough and expectoration, while emaciation and biofuel use for more than 40 years were more likely to suffer from chronic expectoration and dyspnea (all P<0.05). The median values of forced expiratory volume in 1 second (FEV1), forced vital capacity (FVC) and FEV1/FVC in 1 second were 2.19 L/s, 3.24 L and 69.16%, respectively. Among them, the lung function of 5 801 (53.0%) respondents was lower than the expected value. The median FEV1/FVC decreased with the increase of age. The FEV1/FVC of people over 40 years old with smoking history was lower, the dust exposure history of people with decreased lung function was more than that of people with normal lung function, and the incidence of chronic expectoration and dyspnea was higher in people with decreased lung function (all P<0.05). The absolute value and ratio of eosinophils in patients with decreased ventilation function over 60 years old were significantly higher than those with normal ventilation function, but the level of body mass index (BMI) was lower (all P<0.05). Conclusion: In Hongdong County, Shanxi Province, grassroots residents have poor medical awareness, low lung function examination rate, chronic respiratory symptoms and lung function decline are associated with more risk factors. Primary medical institutions need to formulate prevention strategies and carry out lung function detection according to the actual situation, focusing on monitoring and follow-up of high-risk groups to achieve early and timely prevention, diagnosis and treatment of chronic obstructive pulmonary disease.
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Affiliation(s)
- Y Y Wang
- Department of Respiratory Medicine, Linfen Central Hospital, Linfen 041000, China
| | - Z M Shi
- Medical Department, Linfen Central Hospital, Linfen 041000, China
| | - G Y Li
- Science and Education Department, Linfen Central Hospital, Linfen 041000, China
| | - Z X Zhang
- Nursing Department, Linfen Central Hospital, Linfen 041000, China
| | - J F Jin
- Department of Respiratory Medicine, Linfen Central Hospital, Linfen 041000, China
| | - M F Chen
- Department of Respiratory Medicine, Linfen Central Hospital, Linfen 041000, China
| | - C F Han
- Department of Respiratory Medicine, Linfen Central Hospital, Linfen 041000, China
| | - Y Xu
- Department of Respiratory and Critical Care Medicine, Beijing Jishuitan Hospital, Capital Medical University,Beijing 100035, China
| | - Z C Gao
- Department of Respiratory and Critical Care Medicine, Peking University People's Hospital, Beijing 100044, China
| | - S M Guo
- Nursing Department, Linfen Central Hospital, Linfen 041000, China
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P X, Zz L, Gg J, Lp W, Cm B, Yl W, Chen MF, W L. The role of LRP1 in Aβ efflux transport across the blood-brain barrier and cognitive dysfunction in diabetes mellitus. Neurochem Int 2022; 160:105417. [PMID: 36067928 DOI: 10.1016/j.neuint.2022.105417] [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] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 08/06/2022] [Accepted: 08/25/2022] [Indexed: 10/31/2022]
Abstract
BACKGROUND The incidence of cognitive dysfunction in diabetes is increasing yearly, which severely affects the quality of life of patients and places a heavy burden on families and society. It has been demonstrated that impaired clearance of cerebral amyloid β-protein (Aβ) is a central event in the initiation and progression of Aβ deposition and cognitive impairment in diabetic patients. However, until now, the molecular mechanism by which diabetes mellitus induces impaired clearance of Aβ has remained unclear. OBJECTIVE To investigate the role and mechanism of lipoprotein receptor-related protein 1 (LRP1) in Aβ clearance impairment and cognitive function damage caused by diabetes. METHODS SPF male C57BL/6 mice were bred, and streptozotocin (STZ) (60 mg/kg/d) was intraperitoneally injected for 5 days to establish a diabetes model. The novel object recognition test and fear conditioning test were used to assess the cognitive function of mice in each group. Western blotting, qRT-PCR, ELISAs, and immunofluorescence staining were used to detect the expression levels of Aβ and Aβ clearance-related proteins in mouse brains. HBMECs were cultured in vitro to establish the blood-brain barrier model. The clearance rate of Aβ and the expression levels of LRP1 were measured under different glucose concentration culture conditions. HBMECs were transfected with lentivirus to overexpress or knock down the LRP1, and then, the changes in Aβ clearance were detected again. We injected adeno-associated virus AAV9-SP-A-LRP1 shRNA into the tail vein of DM mice to selectively knock down LRP1 gene expression in cerebral vascular endothelial cells. Then, the cognitive function and the expression levels of Aβ and Aβ clearance-related proteins in the brains of normal, DM and LRP1 knockdown mice were detected. RESULTS Compared with the controls, diabetic mice showed impaired cognitive performance, increased deposition of Aβ in the brain and decreased expression of LRP1 in the brain microvasculature. In vitro experiments showed that high glucose can downregulate the expression of LRP1 in HBMECs and damage the Aβ clearance across the blood-brain barrier (BBB). The reduction in the clearance rate of Aβ induced by high glucose was reversed by LRP1 overexpression but further substantially decreased when LRP1 was knocked down. CONCLUSION Hyperglycemia can impair Aβ efflux in the brain by downregulating the expression of LRP1 in the brain microvasculature, eventually resulting in cognitive impairment.
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Affiliation(s)
- Xue P
- Department of Geriatrics, Li-Yuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430077, China
| | - Long Zz
- Xiang Yang No.1 People's Hospital, Hubei University of Medicine, Xiangyang, 441000, China
| | - Jiang Gg
- Department of Geriatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Wang Lp
- Department of Geriatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Bian Cm
- Department of Geriatrics, The First People's Hospital of Yichang, Three Gorges University, Yichang, 430010, China
| | - Wang Yl
- Department of Geriatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - M F Chen
- Department of Geriatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Li W
- Department of Geriatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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Chen MF, Zheng CC, Liu Y, Chen F, Xu D. [Choroidal blood flow and visual function in idiopathic macular hole]. Zhonghua Yan Ke Za Zhi 2022; 58:412-419. [PMID: 35692022 DOI: 10.3760/cma.j.cn112142-20210918-00436] [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: 06/15/2023]
Abstract
Objective: To investigate the choroidal blood flow and visual function in idiopathic macular hole. Methods: In this prospective study, fundus structure and visual function in 22 eyes with macular hole and their fellow eyes and 16 normal eyes were assessed. The best corrected visual acuity and retinal sensitivity were detected by the EDTRS visual chart and MP1. The choroidal blood flow was observed by optical coherence tomography angiography. The choriocapillary blood flow density was measured using MatLab. The thickness of the choroid and the aperture size of macular hole were measured using enhanced depth imaging mode of Heidelberg optical coherence tomography. Results: The best corrected visual acuity and retinal sensitivity of macular hole eyes [1.02±0.20 and (13.03±2.91) dB] were significantly lower than fellow eyes [0.15±0.11, t=17.019, P<0.001 and (17.25±2.03) dB, t=-4.085, P<0.001] and normal eyes [0.04±0.05, t=21.736, P=0.001 and (16.63±2.89) dB, t=-3.134, P=0.004]. The blood flow area of choroidal capillaries in macular hole eyes [(1.33±0.29) mm2] was significantly lower than fellow eyes [(1.98±0.13) mm2; t=-9.424, P<0.001] and normal eyes [(1.93±0.12) mm2; t=-8.707, P<0.001]. The paracentral blood vessel density of the choroid capillary layer in macular hole eyes (48.91%±10.12%) was significantly lower than fellow eyes (58.27%±6.18%; t=-3.502, P=0.001) and normal eyes (55.20%±2.12%; t=-2.830, P=0.020). The subfoveal choroidal thickness of macular hole eyes [(188±21) μm] was significantly lower than fellow eyes [(217±36) μm; t=-3.672, P=0.002] and normal eyes [(229±25) μm; t=-3.304, P<0.001]. The basic diameter of macular hole eyes was correlated with the blood vessel density (r=-0.584, P=0.004), the subfoveal choroidal thickness (r=-0.511, P=0.015) and the retinal sensitivity (r=-0.432, P=0.044). The retinal sensitivity was correlated with the blood vessel density (r=0.450, P=0.035) and the subfoveal choroidal thickness (r=0.429, P=0.046). Conclusions: The retinal sensitivity and fundus blood perfusion of idiopathic macular hole was decreased, and the thickness of paracentral choroid in the contralateral eye tended to become thinner. The reduced visual function in eyes with macular hole may be associated with the decreased choroidal thickness and worse blood flow of fundus microcirculation.
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Affiliation(s)
- M F Chen
- Eye Hospital of Wenzhou Medical University, National Clinical Research Center for Ocular Diseases, Wenzhou 325027, China
| | - C C Zheng
- Eye Hospital of Wenzhou Medical University, National Clinical Research Center for Ocular Diseases, Wenzhou 325027, China
| | - Y Liu
- Eye Hospital of Wenzhou Medical University, National Clinical Research Center for Ocular Diseases, Wenzhou 325027, China
| | - F Chen
- Eye Hospital of Wenzhou Medical University, National Clinical Research Center for Ocular Diseases, Wenzhou 325027, China
| | - D Xu
- Eye Hospital of Wenzhou Medical University, National Clinical Research Center for Ocular Diseases, Wenzhou 325027, China
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Chen MF, Liu XT, Zhang F, Wang YL, Mao XJ. [The influencing factors and the effect of myopia control in children treated with orthokeratology]. Zhonghua Yan Ke Za Zhi 2022; 58:259-264. [PMID: 35391512 DOI: 10.3760/cma.j.cn112142-20210801-00360] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To analyze the influencing factors and the effect of myopia control in children treated with orthokeratology. Methods: It was a retrospective case series study. Data of 137 children from June 2016 to July 2020 in the Optometry Hospital of Wenzhou Medical University who were fitted with orthokeratology lenses and kept wearing them for 24 months were retrospectively reviewed. These children were divided into the modeling group (n=91) and verification group (n=46). The baseline conditions were recorded before they wore the orthokeratology lenses, including age, spherical equivalent refractive power (SER) and pupil area. The decentration distance was measured with a tangential difference map. Axial length (AL) changes of all children during 24 months were calculated. The influencing factors and the effect of myopia control were analyzed, and a regression equation was formulated with the modeling group. Then the influencing factors were imported with the verification group to compare the AL change differences between prediction and measurement. Results: There was statistical difference in AL between baseline and after wearing orthokeratology lenses for 24 months both in the modeling group [(25.16±0.90) mm vs. (25.56±0.82) mm; t=-10.119, P<0.001] and verification group [(25.29±0.71) mm vs. (25.67±0.69) mm; t=-8.785, P<0.001]. The AL changes in the modeling group showed significant correlations with baseline age (r=-0.365, P<0.001), baseline SER (r=0.308, P=0.003), pupil area (r=-0.260, P=0.013) and decentration distance (r=-0.352, P=0.001). The regression equation was as follows: y=1.609-0.056a-0.315b-0.009c+0.054d (y: AL changes, a: baseline age, b: decentration distance, c: pupil area, d: baseline SER). There was no statistical difference between prediction and measurement [(0.40±0.20) mm vs. (0.40±0.32) mm; t=-0.036, P=0.971]. Conclusion: Baseline age, decentration distance, baseline SER and pupil area contributed to predict the effect of myopia control after orthokeratology treatment.
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Affiliation(s)
- M F Chen
- Eye Hospital of Wenzhou Medical University, National Clinical Research Center for Ocular Diseases,Wenzhou 325027, China
| | - X T Liu
- Eye Hospital of Wenzhou Medical University, National Clinical Research Center for Ocular Diseases,Wenzhou 325027, China
| | - F Zhang
- Eye Hospital of Wenzhou Medical University, National Clinical Research Center for Ocular Diseases,Wenzhou 325027, China
| | - Y L Wang
- Eye Hospital of Wenzhou Medical University, National Clinical Research Center for Ocular Diseases,Wenzhou 325027, China
| | - X J Mao
- Eye Hospital of Wenzhou Medical University, National Clinical Research Center for Ocular Diseases,Wenzhou 325027, China
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Liu B, Cheng YH, Ge YH, He ZL, Chen C, Yang PZ, Chen MF, Zhou LX, Nie SD, Lyu P. [Mucinous adenocarcinoma of the gallbladder: report of 5 cases]. Zhonghua Yi Xue Za Zhi 2021; 101:3506-3508. [PMID: 34775710 DOI: 10.3760/cma.j.cn112137-20210509-01101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The clinical manifestations, laboratory and imaging results, diagnosis and treatment and prognosis of 5 patients with mucinous adenocarcinoma of the gallbladder were analyzed. It was found that the clinical characteristics of mucinous adenocarcinoma of the gallbladder were very similar to that of gallbladder malignant tumor, and it was difficult to differentiate. Ultrasound guided gallbladder needle biopsy can confirm the diagnosis before surgery. Surgery is still the first choice of treatment. Since laparoscopic surgery has obvious advantages over open surgery, it is recommended to be preferentially used. If the tumor is under T2 stage and has no aggressive metastasis, the prognosis is generally good.
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Affiliation(s)
- B Liu
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Hunan Normal University, Hunan Provincial People's Hospital, Changsha 410005, China
| | - Y H Cheng
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Hunan Normal University, Hunan Provincial People's Hospital, Changsha 410005, China
| | - Y H Ge
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Hunan Normal University, Hunan Provincial People's Hospital, Changsha 410005, China
| | - Z L He
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Hunan Normal University, Hunan Provincial People's Hospital, Changsha 410005, China
| | - C Chen
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Hunan Normal University, Hunan Provincial People's Hospital, Changsha 410005, China
| | - P Z Yang
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Hunan Normal University, Hunan Provincial People's Hospital, Changsha 410005, China
| | - M F Chen
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Hunan Normal University, Hunan Provincial People's Hospital, Changsha 410005, China
| | - L X Zhou
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Hunan Normal University, Hunan Provincial People's Hospital, Changsha 410005, China
| | - S D Nie
- Clinical Trial Research Center, the First Affiliated Hospital of Hunan Normal University, Hunan Provincial People's Hospital, Changsha 410005, China
| | - P Lyu
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Hunan Normal University, Hunan Provincial People's Hospital, Changsha 410005, China
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Ling RJ, Yu YH, He JY, Zhang JX, Xu S, Sun RR, Zhu WC, Chen MF, Li T, Ji HL, Wang HQ. Seroprevalence of IgM and IgG Antibodies against SARS-CoV-2 in Asymptomatic People in Wuhan: Data from a General Hospital Near South China Seafood Wholesale Market during March to April in 2020. Biomed Environ Sci 2021; 34:743-749. [PMID: 34530966 PMCID: PMC8485512 DOI: 10.3967/bes2021.103] [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: 09/28/2020] [Accepted: 02/23/2021] [Indexed: 06/13/2023]
Abstract
The aim of this study was to estimate the seroprevalence of immunoglobulin M (IgM) and G (IgG) antibodies against SARS-CoV-2 in asymptomatic people in Wuhan. This was a cross-sectional study, which enrolled 18,712 asymptomatic participants from 154 work units in Wuhan. Pearson Chi-square test, t-test, and Mann-Whitney test were used to compare the standardized seroprevalence of IgG and IgM for age and gender between different groups. The results indicated the standardized seroprevalence of IgG and IgM showed a downward trend and was significantly higher among females than males. Besides, different geographic areas and workplaces had different seroprevalence of IgG among asymptomatic people, and the number of abnormalities in CT imaging were higher in IgG antibody-positive cases than IgG-negative cases. We hope these findings can provide references for herd immunity investigation and provide basis for vaccine development.
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Affiliation(s)
- Rui Jie Ling
- Integrated Chinese & Western Medicine, Hubei Provincial Hospital, Wuhan 430030, Hubei, China
| | - Yi Han Yu
- Integrated Chinese & Western Medicine, Hubei Provincial Hospital, Wuhan 430030, Hubei, China
| | - Jia Yu He
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Ji Xian Zhang
- Integrated Chinese & Western Medicine, Hubei Provincial Hospital, Wuhan 430030, Hubei, China
| | - Sha Xu
- Integrated Chinese & Western Medicine, Hubei Provincial Hospital, Wuhan 430030, Hubei, China
| | - Ren Rong Sun
- Integrated Chinese & Western Medicine, Hubei Provincial Hospital, Wuhan 430030, Hubei, China
| | - Wang Cai Zhu
- Integrated Chinese & Western Medicine, Hubei Provincial Hospital, Wuhan 430030, Hubei, China
| | - Ming Feng Chen
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Tao Li
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Hong Long Ji
- Department of Cellular and Molecular Biology, University of Texas Health Science Centre, Tyler 75708, TX, U.S
| | - Huan Qiang Wang
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
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Xie WX, Chen MF, Gao L, Feng ZK. A 12-year follow-up study of mucoepidermoid carcinoma-associated membranous nephropathy. J BIOL REG HOMEOS AG 2021; 35:1081-1085. [PMID: 34008398 DOI: 10.23812/20-444-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- W X Xie
- Department of Stomatology, Tongcheng People's Hospital, Anhui Province Tongcheng, China
| | - M F Chen
- Department of Stomatology, Tongcheng People's Hospital, Anhui Province Tongcheng, China
| | - L Gao
- Department of Stomatology, Tongcheng People's Hospital, Anhui Province Tongcheng, China
| | - Z K Feng
- Department of Stomatology, Tongcheng People's Hospital, Anhui Province Tongcheng, China
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Chen YK, Lu QX, Zhong G, Zhang HG, Chen MF, Liu CP. DOPO
‐based curing flame retardant of epoxy composite material for char formation and intumescent flame retardance. J Appl Polym Sci 2020. [DOI: 10.1002/app.49918] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yao Kun Chen
- College of Chemistry and Materials Science, Fujian Key Laboratory of Polymer Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering Fujian Normal University Fuzhou China
| | - Qing Xin Lu
- College of Chemistry and Materials Science, Fujian Key Laboratory of Polymer Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering Fujian Normal University Fuzhou China
| | - Gang Zhong
- College of Chemistry and Materials Science, Fujian Key Laboratory of Polymer Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering Fujian Normal University Fuzhou China
| | - Hua Gui Zhang
- College of Chemistry and Materials Science, Fujian Key Laboratory of Polymer Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering Fujian Normal University Fuzhou China
| | - Ming Feng Chen
- College of Chemistry and Materials Science, Fujian Key Laboratory of Polymer Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering Fujian Normal University Fuzhou China
| | - Can Pei Liu
- College of Chemistry and Materials Science, Fujian Key Laboratory of Polymer Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering Fujian Normal University Fuzhou China
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Xu YH, Chen MF, Lv XP, Yu C, Qi F, Wang HQ. [Analysis on the situation of being supported by the national natural science foundation of China in the field of occupational diseases from 2010 to 2019]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2020; 38:125-128. [PMID: 32306676 DOI: 10.3760/cma.j.issn.1001-9391.2020.02.010] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To understand the situation supported by the National Natural Science Foundation in the field of occupational diseases (H2402) in China, so as to provide a reference basis for the application and research of scientific researchers in the field of occupational diseases in China. Methods: The information system of scientific and technological achievements was used to search the financial support of the National Natural Science Foundation of China (NSFC) in the field of occupational diseases from 2010 to 2019. Results: From 2010 to 2019, a total of 55 projects were funded under the Occupational Disease code (H2402) , with a total funding of 22.33 million yuan, of which 30 were supported by the Youth Science Foundation, 20 by the Youth Science Foundation and 5 by the Regional Science Foundation. Thirty five items of the research projects focused on pneumoconiosis and other respiratory diseases which accounted for 63.64 per cent. Forty one items of scientific research projects are supported by domestic institutions of higher learning which accounted for 74.55 per cent. Conclusion: The research support of the National Natural Science Foundation of China to the field of occupational diseases (H2402) has increased steadily, but the support of different research directions and supporting units is not balanced. It is suggested that departments concerned strengthen guidance and support for the applicants in less developed areas and weak research directions of the projects in the National Natural Science Foundation.
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Affiliation(s)
- Y H Xu
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention 100050 Beijing, China; School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences. Jinan 250062, China; Shandong First Medical University & Shandong Academy of Medical Sciences. Jinan 250062, China
| | - M F Chen
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention 100050 Beijing, China
| | - X P Lv
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention 100050 Beijing, China
| | - C Yu
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention 100050 Beijing, China
| | - F Qi
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention 100050 Beijing, China
| | - H Q Wang
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention 100050 Beijing, China
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12
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Huang CC, Chen YH, Hung CS, Lee JK, Hsu TP, Chuang PY, Chen MF, Ho YL. P951Short-term exposure to ambient air pollutants affected home blood pressure in patients with chronic cardiovascular diseases. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- C C Huang
- National Taiwan University Hospital, Taipei, Taiwan ROC
| | - Y H Chen
- National Taiwan University Hospital, Taipei, Taiwan ROC
| | - C S Hung
- National Taiwan University Hospital, Taipei, Taiwan ROC
| | - J K Lee
- National Taiwan University Hospital, Taipei, Taiwan ROC
| | - T P Hsu
- National Taiwan University Hospital, Taipei, Taiwan ROC
| | - P Y Chuang
- National Taiwan University Hospital, Taipei, Taiwan ROC
| | - M F Chen
- National Taiwan University Hospital, Taipei, Taiwan ROC
| | - Y L Ho
- National Taiwan University Hospital, Taipei, Taiwan ROC
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Chen MF, O'Neill SM, Carey AJ, Conrad RH, Stewart BA, Snekvik KR, Ylitalo GM, Hershberger PK. Infection by Nanophyetus salmincola and Toxic Contaminant Exposure in Out-migrating Steelhead from Puget Sound, Washington: Implications for Early Marine Survival. J Aquat Anim Health 2018; 30:103-118. [PMID: 29710401 DOI: 10.1002/aah.10017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2017] [Accepted: 12/14/2017] [Indexed: 06/08/2023]
Abstract
Out-migrating steelhead Oncorhynchus mykiss from four Puget Sound rivers and associated marine basins of Puget Sound in Washington State were examined for the parasite, Nanophyetus salmincola in 2014 to determine whether recent trends in reduced marine survival are associated with the presence of this pathogen. A subset of steelhead from three of these river-marine basin combinations was analyzed for the presence of persistent organic pollutants (POPs) to assess whether exposure to these contaminants is a contributing factor to their reduced marine survival. The prevalence and parasite load of N. salmincola were significantly higher in fish from central and southern Puget Sound than in fish from river systems in northern Puget Sound. The proportion of steelhead samples with concentrations of POPs higher than adverse effects thresholds (AETs) or concentrations known to cause adverse effects was also greater in fish from the central and southern regions of Puget Sound than in those from the northern region. Polybrominated diphenyl ether concentrations associated with increased disease susceptibility were observed in 10% and 40% of the steelhead sampled from central and southern Puget Sound regions, respectively, but in none of the fish sampled from the northern region. The AET for polychlorinated biphenyls was exceeded in steelhead collected from marine habitats: 25% of the samples from the marine basins in the central and southern regions of Puget Sound and 17% of samples from northern Puget Sound region. Both N. salmincola and POP levels suggest there are adverse health effects on out-migrating steelhead from one southern and one central Puget Sound river that have lower early marine survival than those from a river system in northern Puget Sound.
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Affiliation(s)
- M F Chen
- Northwest Indian Fisheries Commission, 6730 Martin Way East, Olympia, Washington, 98670, USA
| | - S M O'Neill
- Washington Department of Fish and Wildlife, Post Office Box 43150, Olympia, Washington, 98504-3150, USA
| | - A J Carey
- Washington Department of Fish and Wildlife, Post Office Box 43150, Olympia, Washington, 98504-3150, USA
| | - R H Conrad
- Northwest Indian Fisheries Commission, 6730 Martin Way East, Olympia, Washington, 98670, USA
| | - B A Stewart
- Northwest Indian Fisheries Commission, 6730 Martin Way East, Olympia, Washington, 98670, USA
| | - K R Snekvik
- College of Veterinary Medicine, Washington State University, Pullman, Washington, 99164, USA
| | - G M Ylitalo
- National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Northwest Fisheries Science Center, Environmental and Fisheries Sciences Division, 2725 Montlake Boulevard East, Seattle, Washington, 98112, USA
| | - P K Hershberger
- U.S. Geologic Survey, Western Fisheries Research Center, Marrowstone Marine Field Station, 616 Marrowstone Point Road, Nordland, Washington, 98358, USA
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14
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Zheng HR, Li Z, You C, Liu DB, Chen MF. Effects of MgO modified β-TCP nanoparticles on the microstructure and properties of β-TCP/Mg-Zn-Zr composites. Bioact Mater 2017; 2:1-9. [PMID: 29744405 PMCID: PMC5935024 DOI: 10.1016/j.bioactmat.2016.12.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [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: 02/20/2016] [Revised: 12/28/2016] [Accepted: 12/29/2016] [Indexed: 11/25/2022] Open
Abstract
The mechanical properties and corrosion resistance of magnesium alloy composites were improved by the addition of MgO surface modified tricalcium phosphate ceramic nanoparticles (m-β-TCP). Mg-3Zn-0.8Zr composites with unmodified (MZZT) and modified (MZZMT) nanoparticles were produced by high shear mixing technology. Effects of MgO m-β-TCP nanoparticles on the microstructure, mechanical properties, electrochemical corrosion properties and cytocompatibility of Mg-Zn-Zr/β-TCP composites were investigated. After hot extrusion deformation and dynamic recrystallization, the grain size of MZZMT was the half size of MZZT and the distribution of m-β-TCP particles in the matrix was more uniform than β-TCP particles. The yield tensile strength (YTS), ultimate tensile strength (UTS), and corrosion potential (Ecorr) of MZZMT were higher than MZZT; the corrosion current density (Icorr) of MZZMT was lower than MZZT. Cell proliferation of co-cultured MZZMT and MZZT composite samples were roughly the same and the cell number at each time point is higher for MZZMT than for MZZT samples. High melt shear mixing technology was used to melt MZZT and MZZMT composites. Formation mechanism and optimum properties of MZZT and MZZMT composites were studied. β-TCP particles can be coated with MgO using chemical precipitation method. Compared with β-TCP, dispersion and size of m-β-TCP nanoparticles is improved. This research equipment is simple, low cost, and easy to operate.
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Affiliation(s)
- H R Zheng
- School of Materials Science and Engineering, Tianjin University of Technology, China
| | - Z Li
- School of Materials Science and Engineering, Tianjin University of Technology, China
| | - C You
- School of Materials Science and Engineering, Tianjin University of Technology, China
| | - D B Liu
- School of Materials Science and Engineering, Tianjin University of Technology, China
| | - M F Chen
- School of Materials Science and Engineering, Tianjin University of Technology, China.,Tianjin Key Laboratory of Display Materials and Photoelectric Devices, China
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15
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Smyth LM, Iyengar NM, Chen MF, Popper SM, Patil S, Wasserheit-Lieblich C, Argolo DF, Singh JC, Chandarlapaty S, Sugarman SM, Comen EA, Drullinsky PR, Traina TA, Troso-Sandoval T, Baselga J, Norton L, Hudis CA, Dang CT. Weekly paclitaxel with trastuzumab and pertuzumab in patients with HER2-overexpressing metastatic breast cancer: overall survival and updated progression-free survival results from a phase II study. Breast Cancer Res Treat 2016; 158:91-97. [PMID: 27306421 DOI: 10.1007/s10549-016-3851-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 06/02/2016] [Indexed: 01/07/2023]
Abstract
We previously reported progression-free survival (PFS) results on a phase II trial of weekly paclitaxel, trastuzumab, and pertuzumab in patients with human epidermal growth factor receptor 2(HER2)-positive metastatic breast cancer (MBC) treated in the first- and second-line setting. Here, we report results for overall survival (OS) and updated PFS after an additional year of follow-up. Patients with HER2-positive MBC with 0-1 prior treatment were eligible. Treatment consisted of paclitaxel (80 mg/m(2)) weekly, and trastuzumab (loading dose 8 mg/kg → 6 mg/kg) and pertuzumab (loading dose 840 mg → 420 mg) every 3 weeks, all given intravenously. Primary endpoint was 6-month PFS. Secondary endpoints included median PFS, 6-month and median OS. Evaluable patients received at least one full dose of treatment. From January 2011 to December 2013, 69 patients were enrolled: 51 (74 %) and 18 (26 %) treated in first- and second-line metastatic settings, respectively. As of July 1, 2015, the median follow-up was 33 months (range 3-49 months; 67 patients were evaluable for efficacy). The median OS was 44 months (95 % CI 37.5-NR) overall and 44 months (95 % CI 38.3-NR) and 37.5 months (95 % CI 30.3-NR) for patients with 0 and 1 prior metastatic treatment, respectively; 6-month OS was 98 % (95 % CI 90-1). The 6-month PFS was 86 % (95 % CI 75-93) overall and 89 % (95 % CI 76-95) and 78 % (95 % CI 51-91) for patients with 0 and 1 prior therapy, respectively; and median PFS was 21.4 months (95 % CI 14.1-NR) overall and 25.7 months (95 % CI 14.1-NR) and 16.9 months (95 % CI 8.5-NR) for patients with 0-1 prior treatment, respectively. Treatment was well tolerated. Updated analysis demonstrates that weekly paclitaxel, when added to trastuzumab and pertuzumab, is associated with a favorable OS and PFS and offers an alternative to docetaxel-based therapy. http://www.ClinicalTrials.gov NCT0127604.
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Affiliation(s)
- L M Smyth
- Breast Service, Division of Solid Tumor Oncology, Department of Medicine, Memorial Sloan Kettering Cancer Center, 300 E 66th St, New York, NY, 10065, USA.
| | - N M Iyengar
- Breast Service, Division of Solid Tumor Oncology, Department of Medicine, Memorial Sloan Kettering Cancer Center, 300 E 66th St, New York, NY, 10065, USA
| | - M F Chen
- Breast Service, Division of Solid Tumor Oncology, Department of Medicine, Memorial Sloan Kettering Cancer Center, 300 E 66th St, New York, NY, 10065, USA
| | - S M Popper
- Breast Service, Division of Solid Tumor Oncology, Department of Medicine, Memorial Sloan Kettering Cancer Center, 300 E 66th St, New York, NY, 10065, USA
| | - S Patil
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, USA
| | | | | | - J C Singh
- Breast Service, Division of Solid Tumor Oncology, Department of Medicine, Memorial Sloan Kettering Cancer Center, 300 E 66th St, New York, NY, 10065, USA
| | - S Chandarlapaty
- Breast Service, Division of Solid Tumor Oncology, Department of Medicine, Memorial Sloan Kettering Cancer Center, 300 E 66th St, New York, NY, 10065, USA
| | - S M Sugarman
- Breast Service, Division of Solid Tumor Oncology, Department of Medicine, Memorial Sloan Kettering Cancer Center, 300 E 66th St, New York, NY, 10065, USA
| | - E A Comen
- Breast Service, Division of Solid Tumor Oncology, Department of Medicine, Memorial Sloan Kettering Cancer Center, 300 E 66th St, New York, NY, 10065, USA
| | - P R Drullinsky
- Breast Service, Division of Solid Tumor Oncology, Department of Medicine, Memorial Sloan Kettering Cancer Center, 300 E 66th St, New York, NY, 10065, USA
| | - T A Traina
- Breast Service, Division of Solid Tumor Oncology, Department of Medicine, Memorial Sloan Kettering Cancer Center, 300 E 66th St, New York, NY, 10065, USA
| | - T Troso-Sandoval
- Breast Service, Division of Solid Tumor Oncology, Department of Medicine, Memorial Sloan Kettering Cancer Center, 300 E 66th St, New York, NY, 10065, USA
| | - J Baselga
- Breast Service, Division of Solid Tumor Oncology, Department of Medicine, Memorial Sloan Kettering Cancer Center, 300 E 66th St, New York, NY, 10065, USA
| | - L Norton
- Breast Service, Division of Solid Tumor Oncology, Department of Medicine, Memorial Sloan Kettering Cancer Center, 300 E 66th St, New York, NY, 10065, USA
| | - C A Hudis
- Breast Service, Division of Solid Tumor Oncology, Department of Medicine, Memorial Sloan Kettering Cancer Center, 300 E 66th St, New York, NY, 10065, USA
| | - C T Dang
- Breast Service, Division of Solid Tumor Oncology, Department of Medicine, Memorial Sloan Kettering Cancer Center, 300 E 66th St, New York, NY, 10065, USA
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Iyengar NM, Argolo D, Smyth L, Chen MF, Hudis CA, Dang CT. Abstract OT3-01-09: Phase II study of gemcitabine, trastuzumab, and pertuzumab in the treatment of metastatic HER2-positive breast cancer after prior trastuzumab/pertuzumab- or pertuzumab-based therapy. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-ot3-01-09] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Despite significant therapeutic advances in the treatment of breast cancers that overexpress human epidermal growth factor receptor-2 (HER2), the large majority of patients (pts) with metastatic disease will experience progression. The development of new HER2 directed therapies has led to improvements in progression free and overall survival; however optimal therapeutic sequencing remains under study. The combination of taxanes with trastuzumab (H) and pertuzumab (P) is active in the first line setting; however the efficacy of continuing dual anti-HER2 therapy with HP after initial progression is unknown.
Trial design: This is a single arm phase II trial of gemcitabine (G) with HP for pts with metastatic HER2-positive breast cancer who have had prior HP-based treatment. G is administered at 1200 mg/m2 on days 1 and 8 of an every 3 week cycle. H is given 8 mg/kg load → 6 mg/kg every 3 weeks or 4 mg/kg load → 2 mg/kg every week. P is given 840 mg load → 420 mg every 3 weeks. All agents will be given intravenously. This trial is currently enrolling pts.
Eligibility criteria: Eligible pts are adults with stage IV HER2-positive (3+ IHC or FISH ≥ 2.0 of primary or metastatic site) breast cancer. Pts may have received prior treatment with HP- or P-based therapy in the (neo)adjuvant, unresectable, locally advanced, or metastatic setting. In the metastatic setting, ≤ 3 prior chemotherapies are permitted. Prior G is allowed only if it was not combined with P. Bone-only non-measurable disease is permitted. Adequate organ and bone marrow function, left ventricular ejection fraction > 50%, and ECOG status ≤ 1 are required. Pts with previously treated brain metastases stable for ≥ 2 months may be enrolled.
Specific aims: The primary objective is to determine the progression free survival (PFS) at 3 months. Secondary objectives include overall survival, safety and tolerability. An exploratory endpoint is to compare PFS determined by RECIST criteria versus 18-F FDG-PET response criteria.
Statistical methods: Based on historical data, the anticipated median PFS in this setting is 3 months. The study will be considered positive if the 3-month PFS is ≥ 70%. A Simon optimal 2-stage design will be used. If 12/21 pts in stage 1 are alive and progression free at 3 months, stage 2 will accrue for a total of 45 pts. If at least 27/45 pts are alive and progression free, the trial will be deemed a success. This design assumes a 10% type I and type II error.
Present accrual and target accrual: 3 out of a planned 45 pts have been enrolled.
Contact information: For more information, please visit clinicaltrials.gov (NCT02252887).
Citation Format: Iyengar NM, Argolo D, Smyth L, Chen MF, Hudis CA, Dang CT. Phase II study of gemcitabine, trastuzumab, and pertuzumab in the treatment of metastatic HER2-positive breast cancer after prior trastuzumab/pertuzumab- or pertuzumab-based therapy. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr OT3-01-09.
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Affiliation(s)
- NM Iyengar
- Memorial Sloan Kettering Cancer Center, NY, NY
| | - D Argolo
- Memorial Sloan Kettering Cancer Center, NY, NY
| | - L Smyth
- Memorial Sloan Kettering Cancer Center, NY, NY
| | - MF Chen
- Memorial Sloan Kettering Cancer Center, NY, NY
| | - CA Hudis
- Memorial Sloan Kettering Cancer Center, NY, NY
| | - CT Dang
- Memorial Sloan Kettering Cancer Center, NY, NY
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Chen MF, Huang CC, Liu PS, Chen CH, Shiu LY. Saikosaponin a and saikosaponin d inhibit proliferation and migratory activity of rat HSC-T6 cells. J Med Food 2014; 16:793-800. [PMID: 24044489 PMCID: PMC3778952 DOI: 10.1089/jmf.2013.2762] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The proliferation and migration of hepatic stellate cells (HSCs) profoundly impact the pathogenesis of liver inflammation and fibrogenesis. As a perennial herb native to China, Bupleurum falcatum is administered for its anti-inflammatory, antipyretic, and antihepatotoxic effects. Saikosaponin a (SSa) and Saikosaponin d (SSd) are the major active components of triterpene saponins in Bupleurum falcatum. This study analyzes how SSa and SSd affect rat HSC-T6 cell line proliferation and migration. Experimental results indicate that, in addition to suppressing HSC-T6 proliferation, wound healing activity and cell migration in a time- and dose-dependent manner, SSa and SSd significantly induce apoptosis. Additionally, SSa and SSd decreased the expressions of extracellular matrix-regulated kinase 1/2 (ERK1/2), platelet-derived growth factor receptor 1 (PDGFR1), and subsequently transforming growth factor-β1 receptor (TGF-β1R), α-smooth muscle actin, TGF-β1 and connective tissue growth factor. They also decreased phosphorylation of p38 (p-p38) and ERK1/2 (p-ERK1/2) of HSC-T6. Furthermore, both SSa and SSd can block PDGF-BB and TGF-β1-induced cell proliferation and migration of HSC-T6. These results suggest that SSa and SSd may inhibit proliferation and activation of HSC-T6, and the modulated mechanisms warrant further study.
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Affiliation(s)
- Ming Feng Chen
- 1 Department of Gastroenterology and Hepatology, E-DA hospital , Kaohsiung, Taiwan
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18
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Chen MF, Zhu HS, Zhu HJ. Segmentation of liver in ultrasonic images applying local optimal threshold method. The Imaging Science Journal 2013. [DOI: 10.1179/1743131x12y.0000000028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Chung HH, Yang TT, Chen MF, Chou MT, Cheng JT. Improvement of hyperphagia by activation of cerebral I(1)-imidazoline receptors in streptozotocin-induced diabetic mice. Horm Metab Res 2012; 44:645-9. [PMID: 22674473 DOI: 10.1055/s-0032-1314835] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Imidazoline I1-receptors (I1R) are known to regulate blood pressure and rilmenidine, an agonist, is widely used as antihypertensive agent in clinic. However, the role of I1R in feeding behavior is still unclear. In the present study, we used the agonist of I1R to investigate the effect on hyperphagia in streptozotocin (STZ)-induced diabetic mice. Rilmenidine decreased the food intake of STZ-diabetic mice in a dose-dependent manner. The reduction of food intake was abolished by pretreatment with efaroxan at the dose sufficient to block I1R. Intracerebroventricular (icv) administration of rilmenidine into STZ-diabetic mice also significantly reduced hyperphagia, which was reversed by icv administration of efaroxan. In addition, similar results were observed in STZ-diabetic mice, which received chronic treatment with rilmenidine 3 times daily (t.i.d.) for 7 days. Moreover, the hypothalamic neuropeptide Y (NPY) level was reduced by rilmenidine that was also reversed by pretreatment with efaroxan. In conclusion, the obtained results suggest that rilmenidine can decrease food intake in STZ-diabetic mice through an activation of I1R to lower hypothalamic NPY level.
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Affiliation(s)
- H H Chung
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan City, Taiwan
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20
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Chen MF, Yang TT, Yeh LR, Chung HH, Wen YJ, Lee WJ, Cheng JT. Activation of imidazoline I-2B receptors by allantoin to increase glucose uptake into C₂C₁₂ cells. Horm Metab Res 2012; 44:268-72. [PMID: 22351479 DOI: 10.1055/s-0032-1301898] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Allantoin, an active principle of the yam, belongs to the group of guanidinium derivatives and has been reported to lower plasma glucose in diabetic animals. Recent evidence indicates that activation of the imidazoline I(2B) receptor (I(2B)R) by guanidinium derivatives also increases glucose uptake; however, the effect of allantoin on I(2B)R is still unknown. Glucose uptake into cultured C₂C₁₂ cells was determined using 2-[¹⁴C]-deoxy-D-glucose as a tracer. The changes in 5'-AMP-activated protein kinase (AMPK) expression were also identified by Western blotting analysis. The allantoin-induced glucose uptake action was dose-dependently blocked by BU224, a specific I₂R antagonist, in C₂C₁₂ cells. Moreover, AMPK phosphorylation by allantoin was found to be dose-dependently increased in C₂C₁₂ cells using AICAR treatment as a reference. In addition, both actions of allantoin, the increases in glucose uptake and AMPK phosphorylation, were dose-dependently attenuated by amiloride in C₂C₁₂ cells. Moreover, compound C at concentrations sufficient to inhibit AMPK blocked the allantoin-induced glucose uptake and AMPK phosphorylation. Thus, we suggest that allantoin can activate I(2B)R to increase glucose uptake into cells, and propose I(2B)R as a new target for diabetic therapy.
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Affiliation(s)
- M F Chen
- Department of Nursing and Biotechnology, Chung Hwa University of Medical Technology, Jen-Te, Tainan City, Taiwan
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21
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Abstract
Noradrenaline (NE) and acetylcholine (ACh) released from the sympathetic and parasympathetic neurones in cerebral blood vessels were suggested initially to be the respective vasoconstricting and dilating transmitters. Both substances, however, are extremely weak post-synaptic transmitters. Compelling evidence indicates that nitric oxide (NO) which is co-released with ACh from same parasympathetic nerves is the major transmitter for cerebral vasodilation, and its release is inhibited by ACh. NE released from the sympathetic nerve, acting on presynaptic β2-adrenoceptors located on the neighbouring parasympathetic nitrergic nerves, however, facilitates NO release with enhanced vasodilation. This axo-axonal interaction mediating NE transmission is supported by close apposition between sympathetic and parasympathetic nerve terminals, and has been shown in vivo at the base of the brain and the cortical cerebral circulation. This result reveals the physiological need for increased regional cerebral blood flow in 'fight-or-flight response' during acute stress. Furthermore, α7- and α3β2-nicotinic ACh receptors (nAChRs) on sympathetic nerve terminals mediate release of NE, leading to cerebral nitrergic vasodilation. α7-nAChR-mediated but not α3β2-nAChR-mediated cerebral nitrergic vasodilation is blocked by β-amyloid peptides (Aβs). This may provide an explanation for cerebral hypoperfusion seen in patients with Alzheimer's disease. α7- and α3β2-nAChR-mediated nitrergic vasodilation is blocked by cholinesterase inhibitors (ChEIs) which are widely used for treating Alzheimer's disease, leading to possible cerebral hypoperfusion. This may contribute to the limitation of clinical use of ChEIs. ChEI blockade of nAChR-mediated dilation like that by Aβs is prevented by statins pretreatment, suggesting that efficacy of ChEIs may be improved by concurrent use of statins.
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Affiliation(s)
- T J F Lee
- College of Life Sciences, Institute of Life Science, Tzu Chi University, Hualien, Taiwan.
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22
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Chen MF, You C, Li SJ, Yang R, Guo ZX. The formation of nanocrystallite bone-like apatite on chemically treated Ti-24Nd-4Zr-7.9Sn alloy. J Nanosci Nanotechnol 2009; 9:1214-1217. [PMID: 19441490 DOI: 10.1166/jnn.2009.c122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Ti-24Nd-4Zr-7.9Sn alloy with low elastic modulus and high strength is a great candidate for artificial biomaterials used in orthopedic and dental implants. In order to improve biocompatibility, a biomimetic process was employed to deposit a bone-like apatite nanocrystal coating on alloy. Analysis of the coatings showed that a net-like Na2TiO3 layer with about 100 nm in size was formed on Ti-24Nd-4Zr-7.9Sn treated by NaOH. Consequently, a carbonated apatite nanocrystal coating, namely bone-like apatite, was biomimetically deposited on Na2TiO3 layer, which has similar mineral composition to that of natural bone. The growth mechanism of bone-like layer is also discussed.
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Affiliation(s)
- M F Chen
- School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300191, China
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23
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Chan KM, Yeh TS, Jan YY, Chen MF. Laparoscopic cholecystectomy for early gallbladder carcinoma: long-term outcome in comparison with conventional open cholecystectomy. Surg Endosc 2008; 20:1867-71. [PMID: 17031747 DOI: 10.1007/s00464-005-0195-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2005] [Accepted: 09/25/2005] [Indexed: 12/28/2022]
Abstract
BACKGROUND The role of laparoscopic surgery for malignant gallbladder tumors remains uncertain. This study compared the surgical results of laparoscopic versus conventional open cholecystectomy for patients with early-stage gallbladder carcinoma and examined the role of laparoscopic surgery for early gallbladder carcinomas. METHODS Data for the treatment of gallbladder carcinomas were gathered from Chang Gung Memorial Hospital (Linkou, Taiwan). A retrospective analysis of 40 patients with either stage 0 or stage 1 gallbladder carcinoma was performed. The patients were categorized into two groups on the basis of cholecystectomy procedures. The long-term outcomes for the two groups were compared. RESULTS During the follow-up period, which ranged from 6.5 to 197.6 months, four patients in the conventional open cholecystectomy group encountered tumor recurrence, and one patient in the laparoscopic cholecystectomy group experienced distant tumor recurrence (p = 0.216). No local port-site tumor recurrence was identified in patients who underwent laparoscopic cholecystectomy. The overall 5-year survival rate in this series was 87.1%. A comparison of survival rates between the two groups demonstrated no significant difference (p = 0.340). CONCLUSION The laparoscopic cholecystectomy procedure did not adversely influence the prognosis of patients with early-stage gallbladder carcinomas. Furthermore, meticulous removal of gallbladders during laparoscopic surgery, in which early gallbladder carcinoma can be managed successfully using laparoscopic cholecystectomy, achieved a satisfactory surgical result and a low port-site tumor recurrence rate.
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Affiliation(s)
- K M Chan
- Department of General Surgery, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, No. 5, Fu-Hsing Street, Kwei-shan, Taoyuan, 333 Taiwan, ROC
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Chien KL, Hsu HC, Chen WJ, Chen MF, Su TC, Lee YT. Familial aggregation of metabolic syndrome among the Chinese: report from the Chin-Shan community family study. Diabetes Res Clin Pract 2007; 76:418-24. [PMID: 17097184 DOI: 10.1016/j.diabres.2006.09.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2006] [Accepted: 09/20/2006] [Indexed: 01/08/2023]
Abstract
Genetic study on metabolic syndrome is a great challenge, due to its complex traits and the pleiotropic manifestation of atherosclerosis. Familial aggregation and recurrence risk ratio can provide the insight of possible genetic mechanism. The Chin-Shan community family study was based on adolescent probands and their relatives (1356 subjects) who were recruited from one junior high school in the community. Structured questionnaires and biochemical measures were obtained in standard procedures. Definition of metabolic syndrome was followed using the criteria defined by the third adult treatment panel, with a modification of the criteria for adolescent and Asian population. Grandmothers had the highest frequencies (70%) in metabolic syndrome and various atherosclerotic risks. Three factors were found and thus explained 68% of the overall variance. Estimated heritability was the highest in LDL and cholesterol factor (0.36 and 0.40), then blood pressure/obesity factor (0.27), and insulin resistance/dyslipidemia (0.27). Recurrence risk ratio among siblings was 2.95 (95% confidence interval [CI]: 1.39-6.26). The adjusted odds ratio (OR) of proband's metabolic syndrome status was 1.99 (95% CI: 1.08-3.66). The adjusted odds ratios for the three factors for predicting metabolic syndrome were all significant, with highest risk in blood pressure/obesity factor (OR: 1.27, CI: 1.22-1.33), then insulin resistance/dyslipidemia (OR: 1.29, CI: 1.16-1.23). This study demonstrated clearly familial aggregation and recurrence risk ratio of metabolic syndrome and components among the general ethnic Chinese population in Taiwan.
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Affiliation(s)
- K L Chien
- Institute of Preventive Medicine, School of Public Health, National Taiwan University, Taipei, Taiwan
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Dempsey E, Barrington K, Chen MF, Kokottis T, Usher R. 56 Outcome of Neonates Less than 30 Weeks with Histological Chorioamnionitis. Paediatr Child Health 2004. [DOI: 10.1093/pch/9.suppl_a.35ac] [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: 11/12/2022] Open
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26
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Yeh CN, Chen MF, Jan YY. Laparoscopic cholecystectomy in 226 cirrhotic patients. Experience of a single center in Taiwan. Surg Endosc 2002; 16:1583-7. [PMID: 12085147 DOI: 10.1007/s00464-002-9026-0] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2002] [Accepted: 03/25/2002] [Indexed: 12/21/2022]
Abstract
BACKGROUND Since 1987, laparoscopic cholecystectomy (LC) has been widely used as the favored treatment for gallbladder lesions. However, cirrhosis and portal hypertension have been considered relative or absolute contraindications to LC. This study aimed to assess the safety of LC in cirrhotic patients. METHOD The medical records of 226 cirrhotic patients with gallbladder lesions who had undergone LC from 1991 to 2000 were reviewed, including demographics, severity of cirrhosis, laboratory data, operative morbidity, operative mortality, and hospital stay. Furthermore, the clinical features and outcomes of 4030 patients with gallbladder lesions without cirrhosis that had undergone LC were also summarized for comparison. RESULTS Of 4256 patients with gallbladder lesions that had undergone LC, 226 (5.6%) had cirrhotic livers. The cirrhotic group patients clearly exhibited the trends of older age, worse liver function, higher blood loss, and higher mortality compared to the noncirrhotic group patients. CONCLUSIONS This study presents the clinical features and outcomes of 226 cirrhotic patients who underwent LC. LC, once considered contraindicated in patients with cirrhosis, is a feasible procedure for most Child's A and B patients with cholecystolithiasis. Minor morbidity, an acceptable conversion rate, and shorter hospital stay can be achieved by applying LC to treat cirrhotic patients. However, appropriate preoperative preparations and meticulous operative techniques are required to reduce blood loss during laparoscopy and even mortality.
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Affiliation(s)
- C N Yeh
- Department of Surgery, Chang Gung Memorial Hospital, Chang Gung University, 5, Fu-Hsing Street, Kwei-Shan, Taoyuan, Taiwan
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Abstract
AIMS We examined the clinical features and outcome of 80 patients with hepatocellular carcinoma (HCC) who had undergone hepatic resection; 32 patients were under 30 years old (younger-HCC), and 48 patients were over 70 years (elderly-HCC). METHODS Clinical features of 32 cases of younger-HCC (less than 30 years old) and 48 elderly-HCC (over 70 years old) were reviewed between 1986 and 1999. The clinical features, pathological findings and outcome of the younger and elderly HCC patients were summarized for comparison. RESULTS Of 573 HCC patients who underwent hepatic resection, 32 were younger than 30 years old and 48 older than 70 years. Less hepatitis B infection, higher hepatitis C infection, more liver cirrhosis development, and a higher ICG 15min retention ratio than the younger group. The younger group tended to have a larger tumor size, more major hepatectomy, more operative blood loss during operation, more perioperative blood transfusion, and more recurrence when compared with the elderly-HCC group. The elderly-HCC group had a significantly better disease-free survival rate than the younger-HCC group. The younger-HCC group had a similar overall survival rate to the elderly-HCC group. CONCLUSIONS These results seem to indicate a possible difference in the HCC carcinogenesis between younger and elderly patients. The overall survival of the younger HCC patients who undergone hepatic resection was as favorable as that of the elderly.
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Affiliation(s)
- C-N Yeh
- Department of Surgery, Chang Gung Memorial Hospital, Chang Gung University, Kwei-Shan, Taoyuan, Taiwan.
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Chen MF, Chen JC, Chiu DF, Ng CJ, Shyr MH, Chen HM. Prostacyclin analogue (OP-2507) induces delayed ex vivo neutrophil apoptosis and attenuates reperfusion-induced hepatic microcirculatory derangement in rats. Shock 2001; 16:473-8. [PMID: 11770047 DOI: 10.1097/00024382-200116060-00012] [Citation(s) in RCA: 13] [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: 01/29/2023]
Abstract
Leukocyte-endothelial adherence and changes of blood flow in microcirculation are associated with the development of ischemia-reperfusion injury in the liver. Polymorphonuclear neutrophil (PMN) apoptosis is essential to maintain homeostasis and plays a major role in limiting the reperfusion-related systemic effects. This study investigates the effects of a prostacyclin analogue (OP-2507) on hepatic ischemia-reperfusion injury. Adult, male Sprague-Dawley rats were used. Five groups were evaluated: (1) sham-operated control, n = 8; (2) ischemia control (1-h ischemia, 5-h reperfusion), n = 8; (3) intravenous infusion with OP-2507 ([15 cis-14-propylcyclohexyl]-16,17,18,19,20-pentanor-9-deoxy-9alpha,6-ni-trilo-PGF, methyl eater) at a dose of 1 microg/kg/min plus ischemia, n = 8; (4) intravenous infusion with OP-2507 at a dose of 0.1 microg/kg/min plus ischemia, n = 8, and (5) sham-operated control and intravenous infusion with OP-2507 at a dose of 1 microg/kg/min, N =8. Laser-Doppler flowmetry and an in vivo microscopy were used to investigate hepatic microcirculation. PMN apoptosis was quantitated by flow-cytometric labeling of DNA strand breaks. Tissue malondialdehyde and adenosine triphosphate were determined at the end of the experiment. Compared with the ischemia control group, OP-2507 significantly improved harmful insults following ischemia-reperfusion. The changes of mean systemic arterial pressure following ischemia-reperfusion have been significantly attenuated by OP- 2507 at both doses. OP-2507 lessened adherent leukocyte count in the post-sinusoid venules, and improved flow velocity in these areas. OP-2507 at both doses reduced malondialdehyde and increased adenosine triphosphate levels and this effect was dose-related. The activity of delayed ex vivo PMN apoptosis was significantly lower in the ischemia group than that of control and treatment groups. OP-2507 induced the activity of PMN apoptosis and its effect is dose-related, also. The PMN apoptosis activity is strongly correlated with parenchymal damages. This study demonstrates that OP-2507 treatment with ischemia may ameliorate the ischemia-reperfusion injury of the liver in the rat model, and increase spontaneous neutrophil apoptosis ex vivo.
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Affiliation(s)
- M F Chen
- Department of Surgery, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei, Taiwan
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Hsu JT, Chen HM, Jan YY, Chen MF. Chronic pancreatitis with pancreas divisum treated with pylorus-preserving pancreatoduodenectomy: a case report. Hepatogastroenterology 2001; 48:1770-1. [PMID: 11813621] [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: 02/23/2023]
Abstract
Pancreas divisum, the most common congenital variant of pancreatic ductal anatomy, occurs when the ventral and dorsal pancreatic-buds fail to fuse. Herein, we report on a 42-year-old male suffering from chronic pancreatitis with pancreas divisum. Magnetic resonance cholangiopancreatography confirmed this diagnosis. A pylorus-preserving pancreatoduodenectomy was then performed. Pathological examination of the pancreas demonstrated chronic pancreatitis without malignancy. The postoperative clinical course was uneventful, and the patient was discharged 10 days after surgery.
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Affiliation(s)
- J T Hsu
- Department of Surgery, Chang Gung Memorial Hospital 199, Tun-Hwa North Road, Taipei, Taiwan
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Abstract
Hepatocellular carcinoma (HCC) is a common malignancy with a poor prognosis. This investigation examined whether dendritic cell-based immunotherapy can treat murine HCC effectively. Bone marrow-derived dendritic cells were propagated from C57BL/10J mice in GM-CSF (4 ng/mL) and interleukin (IL)-4 (1,000 micro/mL). The dendritic cells were pulsed with a Hepa1-6 lysate overnight and employed to treat murine HCC. For in vivo study, HCC was created by inoculation of hepa1-6, 5 x 10(5) cells, in the flank of C57BL/10J mice. HCC were categorized into small (3 x 3-mm) and large (5 x 5-mm) tumors. These HCC were treated by dendritic cells intravenously, twice at weekly intervals. The results revealed that lymphocytes could be gathered around small HCC after administration of Hepa1-6 lysate-pulsed dendritic cells. Seven of 12 (58.3%) small HCC could be eradicated completely by dendritic cell-based immunotherapy, and 33.3% of the small tumors responded to immunotherapy partially which were held in a stable condition for 34.0 +/- 7.4 days before the tumors regrew. For large HCC, lymphocytes did not gather around the tumors, and the tumors cannot be eradicated effectively by dendritic cells. However, dendritic cell-based immunotherapy could slow down the growth rate of large tumors (116.2 +/- 91.4 mm(3) vs. 234.0 +/- 149.1 mm(3) of the control on day 7, P =.043; and 280.3 +/- 224.7 mm(3) vs. 870.0 +/- 418.9 mm(3) of the control on day 17, P <.001). Conclusively, dendritic cells pulsed with a Hepa1-6 lysate can be employed to treat small HCC in vivo effectively. However, the efficacy of dendritic cell-based immunotherapy decreases while tumors grow.
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Affiliation(s)
- W C Lee
- Laboratory of Immunology, Department of General Surgery, Chang-Gung Memorial Hospital, Taipei, Taiwan.
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Huang PJ, Chien KL, Chen MF, Lai LP, Chiang FT. Efficacy and safety of imidapril in patients with essential hypertension: a double-blind comparison with captopril. Cardiology 2001; 95:146-50. [PMID: 11474160 DOI: 10.1159/000047361] [Citation(s) in RCA: 14] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
In this 12-week, double-blind, parallel-group, comparative trial, 57 adult patients with mild-to-moderate hypertension were randomly allocated to receive imidapril or captopril, initially at a dose of 5 mg once a day and 25 mg twice daily, respectively. After 4 weeks of therapy, the dose of each drug was increased twice if diastolic blood pressure (DBP) remained > or =90 mm Hg. Both treatments effectively lowered DBP in a comparable manner. Mean changes from baseline in DBP at 12 weeks were -9.9 mm Hg for imidapril and -8.8 mm Hg for captopril (p = 0.488). Responder rates in patients receiving active treatment for at least 6 weeks were 53.9% for imidapril and 48% for captopril (p = 0.676). Both treatments were well tolerated. Adverse drug reactions were observed in 20.7% (6/29) of the imidapril group and 46.4% (13/28) of the captopril group (p < 0.05). A cough was the most frequent side effect, reported in 13.8% of the imidapril group and 35.7% of the captopril group. The results indicate that imidapril is as effective as captopril in the treatment of hypertension. Imidapril produces less adverse effects compared with captopril.
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Affiliation(s)
- P J Huang
- Department of Internal Medicine, Cardiology Division, National Taiwan University Hospital, Taipei, Taiwan.
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Yeh CN, Jeng LB, Chen MF, Hung CF. Nonfunctioning malignant pheochromocytoma associated with dermatomyositis: case report and literature review. World J Urol 2001; 19:148-50. [PMID: 11374318 DOI: 10.1007/s003450000123] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [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: 11/29/2022] Open
Abstract
A 42-year-old man with dermatomyositis presented with right-upper-quadrant dull pain and normal blood pressure for 10 days. Abdominal ultrasonography, abdominal computed tomography, and angiography revealed a retroperitoneal tumor with direct invasion to the liver and the diaphragm. The diagnosis of nonfunctioning malignant pheochromocytoma was made on the basis of clinical evidence. The tumor was removed en bloc with part of the diaphragm, the right lobe of the liver, the right adrenal gland, and the right kidney. Pathologic examination with immunohistochemical staining revealed a malignant pheochromocytoma growing exophytically from the right adrenal gland and invading the right lobe of the liver and the diaphragm. The postoperative course has been uneventful and no recurrence has been noted over a 6-month follow-up period.
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Affiliation(s)
- C N Yeh
- Department of Surgery, Chang Gung Memorial Hospital, 5, Fu-Hsing Street, Kwei-Shan, Taoyuan, Taiwan
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Chen TC, Nakanuma Y, Zen Y, Chen MF, Jan YY, Yeh TS, Chiu CT, Kuo TT, Kamiya J, Oda K, Hamaguchi M, Ohno Y, Hsieh LL, Nimura Y. Intraductal papillary neoplasia of the liver associated with hepatolithiasis. Hepatology 2001; 34:651-8. [PMID: 11584359 DOI: 10.1053/jhep.2001.28199] [Citation(s) in RCA: 213] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Intraductal papillary growth of neoplastic biliary epithelia with a fine fibrovascular stalk (intraductal papillary neoplasia of liver [IPN-L]) resembling intraductal papillary mucinous neoplasm of pancreas is occasionally associated with hepatolithiasis. In this study, 136 cases of hepatolithiasis in Taiwan, between January 1998 and March 2000, and an additional 21 cases of IPN-L before December 1998, were examined histologically. IPN-L was found in 41 of 136 hepatolithiasis cases (30.1%). Sixty-two IPN-L cases (42 women and 20 men; age range, 59.8 +/- 10 years) were divided into 4 types (type 1, IPN-L with low-grade dysplasia, 23 cases; type 2, IPN-L with high grade dysplasia, 11 cases; type 3, IPN-L with in situ and microinvasive carcinoma, 13 cases; and type 4, IPN-L of types 2 and 3 with distinct invasive carcinoma, 15 cases). Intraductal spreading and glandular involvement were commonly observed in all types. About half of types 3 and 4 cases had mucobilia, and mucinous carcinoma was variably found in two thirds of group 4 patients. IPN-L frequently showed variable gastroenteric differentiation such as goblet cells and foveolar and colon-like metaplasia. IPN-L with goblet cells and colon-like metaplasia was frequently associated with overproduction of mucin and mucobilia (P <.01). In Japan, IPN-L was not frequent in hepatolithiasis (12 of 135 cases). In conclusion, IPN-L forms a spectrum of biliary neoplasm in hepatolithiasis. It often displays variable gastroenteric metaplasia and significant intraductal spread. IPN-L tends to progress to mucinous carcinoma. Formerly reported "mucin-producing intrahepatic cholangiocarcinoma" with a favorable prognosis is included in IPN-L.
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Affiliation(s)
- T C Chen
- Department of Pathology, Chang Gung Memorial Hospital, Chang Gung University School of Medicine, Tao Yuan, Taipei, Taiwan
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Lee TM, Su SF, Hwang JJ, Tseng CD, Chen MF, Lee YT, Wang SS. Differential lipogenic effects of cilostazol and pentoxifylline in patients with intermittent claudication: potential role for interleukin-6. Atherosclerosis 2001; 158:471-6. [PMID: 11583728 DOI: 10.1016/s0021-9150(01)00457-9] [Citation(s) in RCA: 23] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Cilostazol, a novel oral phosphodiesterase inhibitor, has shown consistent improvement in exercise tolerance in patients with intermittent claudication (IC). In addition to this effect, cilostazol has previously been shown to have beneficial effects on the dyslipidemia, i.e., combination of high triglycerides with low high-density-lipoprotein cholesterol (HDL-C) levels. Interleukin-6 (IL-6) suppresses the activity of lipoprotein lipase, which modulates the metabolism of triglycerides and HDL-C. To determine whether a reduction of IL-6 contributes to the improvement of lipid profiles, we prospectively investigated the effect of cilostazol (n=16, 100 mg, twice daily) on the changes of lipid profiles and on the association with the changes of IL-6 compared with those of pentoxifylline (n=16, 400 mg, bid) in patients with IC. After eight weeks of administration of cilostazol to patients with IC, walking distances were increased, associated with a 29% decrease in plasma triglycerides and a 13% increase in HDL-C. No significant changes of lipid profiles in the pentoxifylline and placebo groups were observed although a similar improvement in walking distances was achieved in the pentoxifylline group. IL-6 levels were significantly reduced in patients receiving cilostazol as compared with those receiving placebo or pentoxifylline. The cilostazol-induced changes in the IL-6 were positively related to those of triglycerides in the cilostazol group (r=0.63, P<0.05) and negatively related to those of HDL-C (r=-0.55, P<0.05). These findings suggest that in addition to consistent improvement of exercise tolerance, cilostazol may improve lipid profiles by reducing IL-6 release. However, pentoxifylline did not affect lipid profiles although a similar improvement of maximal walking distance (MWD) was achieved.
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Affiliation(s)
- T M Lee
- Department of Internal Medicine, Cardiology Section, National Taiwan University Hospital, 7, Chung-Shan S. RD., Taipei, 10002, Taiwan
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Wang TD, Chen WJ, Chien KL, Seh-Yi Su SS, Hsu HC, Chen MF, Liau CS, Lee YT. Efficacy of cholesterol levels and ratios in predicting future coronary heart disease in a Chinese population. Am J Cardiol 2001; 88:737-43. [PMID: 11589839 DOI: 10.1016/s0002-9149(01)01843-4] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
In this study, we assessed the efficacy of various lipid and lipoprotein measurements at baseline for predicting the risk for coronary heart disease (CHD) and determined the associated risk of CHD in subgroups stratified by different lipid and lipoprotein screening strategies to evaluate the adequacy of current total and low-density lipoprotein (LDL) cholesterol-based approaches in lipid management. We analyzed data from the Chin-Shan Community Cardiovascular Cohort study, a Chinese population-based prospective cohort study that began in 1990. During an 8-year follow-up period, 213 of 3,159 participants (6.7%) without CHD (aged > or =35 years) developed CHD. The total cholesterol/high-density lipoprotein (HDL) cholesterol ratio was the most powerful lipoprotein predictor of future CHD (hazard ratio 1.21 for a 1.0 increment in ratio; p <0.001). Subjects with "high-risk" LDL cholesterol levels (>160 mg/dl) and low total cholesterol/HDL cholesterol ratios (< or =5) had an incidence of CHD similar to those with low levels of both LDL cholesterol (< or =130 mg/dl) and total cholesterol/HDL cholesterol ratios (4.9% vs 4.6%). In contrast, subjects with "low-risk" LDL cholesterol levels (< or =130 mg/dl) and high total cholesterol/HDL cholesterol ratios (>5) had a 2.5-fold higher incidence of CHD than those with similar LDL cholesterol levels but low total cholesterol/HDL cholesterol ratios (p <0.001). Compared with using an LDL cholesterol level of 130 mg/dl as the cut-off point, using a total cholesterol/HDL cholesterol ratio of 5 was associated with superior specificity (73% vs 59%, p <0.001) and accuracy (72% vs 58%, p <0.001), and similar sensitivity (50% vs 53%). Our data indicate that current guidelines for lipid management may misclassify subjects with high levels of HDL and LDL cholesterol as well as those with low levels of HDL and LDL cholesterol. Using the ratio of total to HDL cholesterol as the initial screening tool can obviate this discrepancy.
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Affiliation(s)
- T D Wang
- Department of Internal Medicine (Cardiology), National Taiwan University Hospital, Taipei, Taiwan, People's Republic of China
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Yeh CN, Chen MF, Chen TC, Tseng JH. Peripheral cholangiocarcinoma with thoracic spine metastasis: a successful surgically treated case. Int Surg 2001; 86:225-8. [PMID: 12056466] [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: 02/25/2023] Open
Abstract
In this study we present a rare case of cholangiocarcinoma with metastasis to the thoracic spine. A 63-year-old female with peripheral cholangiocarcinoma associated with hepatolithiasis presented low back pain as a result of a thoracic spine (T12) compression fracture. Spine surgery and pathological examination revealed a metastatic mucinous adenocarcinoma of unknown origin. Two weeks after the spine surgery, a nontender palpable abdominal mass was found at the epigastric area. Abdominal sonography (US), abdominal computed tomography (CT), and magnetic resonance cholangiopancreaticogram (MRCP) revealed a hepatic tumor, hepatolithiasis, and gallbladder empyema. The patient underwent hepatic resection, cholecystectomy, and choledocholithotomy with T-tube stent. Pathological examination with immunohistochemical stain revealed hepatolithiasis concurrent with mucinous cholangiocarcinoma. Postoperative course was uneventful and no recurrence was noted during a 1-year follow-up period.
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Affiliation(s)
- C N Yeh
- Department of Surgery, Chang Gung Memorial Hospital, Taipei, Taiwan.
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Hsu HC, Lee YT, Chen MF. Effects of fish oil and vitamin E on the antioxidant defense system in diet-induced hypercholesterolemic rabbits. Prostaglandins Other Lipid Mediat 2001; 66:99-108. [PMID: 11529555 DOI: 10.1016/s0090-6980(01)00146-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
This study was designed to investigate the effects of fish oil and vitamin E on the antioxidant defense system in hypercholesterolemic rabbits. A high fat and cholesterol diet, with or without supplement by fish oil and/or a vitamin E supplement, was fed to rabbits for 6 weeks. Compared to the reference diet of regular laboratory rabbit chow, a high fat and cholesterol-enriched diet increased atheroma formation, plasma lipid and peroxide levels, decreased blood glutathione levels, and reduced plasma glutathione reductase, glutathione peroxidase, and catalase activities. Fish oil supplementation significantly reduced atheroma and increased glutathione reductase and glutathione peroxidase activities and blood glutathione levels, but increased plasma lipid peroxide levels. Vitamin E supplementation of the fish oil diet enhanced the beneficial effects by increasing glutathione reductase activity and decreasing peroxide levels. These results indicate that a high fat and cholesterol diet attenuates blood glutathione levels and plasma antioxidant enzyme activities, which may account for some of its atherogenic properties. Consumption of fish oil enhances antioxidative defenses against the oxidative stress imposed by hypercholesterolemia, and vitamin E further enhances these beneficial effects.
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Affiliation(s)
- H C Hsu
- Department of Internal Medicine (Cardiology), National Taiwan University Hospital, Taipei
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Abstract
OBJECTIVES The aims of this study are to review the outcome of pregnancy in women with thrombophilia, and investigate the possible beneficial effect of heparin therapy in these women. METHODS We reviewed the hospital records of 126 women who were referred to the high-risk obstetrical hematology clinic between June 1996 and December 1999. The placental histology and outcome of 39 pregnancies in 24 women with hereditary thrombophilia were studied, and pregnancies which were treated with heparin were compared with those without treatment. RESULTS An adverse pregnancy outcome occurred in 54% of the pregnancies. All seven miscarriages (18%) occurred in pregnancies that were not treated with heparin. However, heparin treatment did not prevent the development of obstetric complications in later pregnancies (odds ratio=0.955, 95% C.I.=0.255-3.577, Fisher's exact test). Excluding miscarriages, 28% of the placentas had thrombotic lesions, and the pregnancies with placental thrombotic lesions were more likely to have complications than those pregnancies without placental abnormalities (P=0.023, C.I.=1.257-5.197, Fisher's exact test). CONCLUSIONS Pregnancy complications in cases of hereditary thrombophilia may be related to placental abnormalities. Heparin therapy is likely to be useful in preventing miscarriage in cases of hereditary thrombophilia.
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Affiliation(s)
- O Ogueh
- Department of Obstetrics and Gynecology, McGill University, Royal Victoria Hospital, Quebec, Montreal, Canada.
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Munthali Lovemore CE, Hsu JT, Chiu CT, Chen HM, Chen MF. Groove pancreatitis: case report and literature review. Chang Gung Med J 2001; 24:512-6. [PMID: 11601193] [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
Groove pancreatitis is a form of chronic pancreatitis affecting the groove between the head of the pancreas, the duodenum and the common bile duct. It was first described by Becker in 1973. Differentiation between groove pancreatitis and pancreatic head carcinoma is often difficult. Herein, we report a 24-year-old man with groove pancreatitis presenting with epigastralgia, jaundice, fever and vomiting. The diagnosis was confirmed by computed tomography of the abdomen, endoscopic retrograde cholangiopancreatography and surgical exploration. The operative procedures involved were pancreatic biopsy and choledochotomy with T-tube drainage. The patient had an uneventful postoperative course.
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Affiliation(s)
- C E Munthali Lovemore
- Department of Surgery, Chang Gung Memorial Hospital, Taipei, 5, Fu-Hsing Street, Kweishan, Taoyuan 333, Taiwan, R.O.C
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Wang TD, Chen WJ, Su SS, Su TC, Chen MF, Liau CS, Lee YT. Increased levels of tissue plasminogen activator antigen and factor VIII activity in nonvalvular atrial fibrillation: relation to predictors of thromboembolism. J Cardiovasc Electrophysiol 2001; 12:877-84. [PMID: 11523531 DOI: 10.1046/j.1540-8167.2001.00877.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
INTRODUCTION Given that nonvalvular atrial fibrillation (AF)-associated stroke can be either cardioembolic or atherothrombotic, we investigated the relationships between nonvalvular AF and hemostatic factors reflecting intrinsic thrombogenic and atherogenic potentials (tissue plasminogen activator [t-PA] antigen, plasminogen activator inhibitor-1, and factor VIII activity). We also evaluated the clinical applicability of these hemostatic factors by examining whether AF subjects with established clinical or echocardiographic predictors of thromboembolism had higher levels of these factors. METHODS AND RESULTS Of the 3,212 participants of a Chinese population-based study, 53 subjects (1.7%) with AF were identified. Among the hemostatic factors measured, t-PA antigen (median 12.8 vs 8.1 ng/mL; P < 0.01) and factor VIII activity (median 155% vs 133%; P < 0.05) were significantly higher in AF subjects after adjustment for age and sex. In multivariate analysis, features independently associated with t-PA antigen levels were AF, sex, body mass index, systolic blood pressure, total cholesterol, triglycerides, and left ventricular systolic dysfunction. Features independently associated with factor VIII activity levels included AF, age, and total cholesterol. Levels of both t-PA antigen and factor VIII activity were primarily elevated in AF subjects with predictors of thromboembolism (age > 75 years, hypertension, diabetes, and left ventricular systolic dysfunction), whereas in AF subjects with no thromboembolic predictors, plasma levels of hemostatic factors examined were similar to those without AF. CONCLUSION We demonstrated that nonvalvular AF was independently associated with increased peripheral levels of t-PA antigen and factor VIII activity. Levels of both hemostatic factors were primarily elevated in AF subjects with predictors of thromboembolism. Whether these hemostatic factors are independently predictive of future thromboembolic events in AF patients requires further investigation.
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Affiliation(s)
- T D Wang
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan, Republic of China
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41
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Abstract
BACKGROUND Studies suggest that both oxidized low and high density lipoprotein (LDL and HDL) play a role in the pathogenesis of atherosclerosis. Gemfibrozil is widely used and is reported to increase cholesterol of LDL and HDL in hypertriglyceridemic patients. The aim of this study was to investigate the effect of gemfibrozil treatment on the oxidative status of lipoprotein particles in Fredrickson phenotype IV hypertriglyceridemic patients. METHODS Twenty-two patients, aged 38-64 years, with fasting plasma triglyceride concentrations between 2.90 and 8.97 mmol L(-1), were recruited and were given gemfibrozil 300 mg three times daily for 12 weeks. Venous blood samples were collected before gemfibrozil treatment, after 4, 8, or 12 weeks of treatment, and 4 weeks after termination of treatment, and used to analyse the plasma lipid profile, isolate lipoproteins, and analyse the chemical composition and in vitro oxidation of lipoprotein particles. RESULTS Gemfibrozil treatment resulted in a decrease in plasma total triglyceride levels and the triglyceride content of all lipoproteins. Plasma total cholesterol levels were decreased as a result of a decrease in very low density lipoprotein (VLDL) cholesterol levels. A slight increase in LDL cholesterol levels was observed, whereas the thiobarbituric acid-reactive substances (TBARS) of LDL were decreased and the lag and peak time of LDL to oxidation were unchanged and maximal diene production was decreased. Plasma HDL cholesterol levels, the surface-to-core ratio of HDL particles, and the resistance of HDL to oxidation were increased. CONCLUSION The decreased TBARS and diene production of LDL, increased HDL cholesterol levels, and increased resistance of HDL to oxidation may, in part, explain why gemfibrozil treatment was found to be generally beneficial in terms of protection against coronary heart disease.
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Affiliation(s)
- M F Chen
- Department of Internal Medicine (Cardiology), National Taiwan University Medical Center, Taipei, Taiwan
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42
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Kramer MS, Goulet L, Lydon J, Séguin L, McNamara H, Dassa C, Platt RW, Chen MF, Gauthier H, Genest J, Kahn S, Libman M, Rozen R, Masse A, Miner L, Asselin G, Benjamin A, Klein J, Koren G. Socio-economic disparities in preterm birth: causal pathways and mechanisms. Paediatr Perinat Epidemiol 2001; 15 Suppl 2:104-23. [PMID: 11520404 DOI: 10.1046/j.1365-3016.2001.00012.x] [Citation(s) in RCA: 219] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Preterm birth is the leading cause of infant mortality in industrialised societies. Its incidence is greatly increased among the socially disadvantaged, but the reasons for this excess are unclear and have been relatively unexplored. We hypothesise two distinct sets of causal pathways and mechanisms that may explain social disparities in preterm birth. The first set involves chronic and acute psychosocial stressors, psychological distress caused by those stressors, increased secretion of placental corticotropin releasing hormone (CRH), changes in sexual behaviours or enhanced susceptibility to bacterial vaginosis and chorioamnionitis, cigarette smoking or cocaine use, and decidual vasculopathy. The second hypothesised pathway is a gene-environment interaction based on a highly prevalent mutation in the gene for methylenetetrahydrofolate reductase (MTHFR), combined with low folate intake from the diet and from prenatal vitamin supplements, consequent hyperhomocysteinemia, and decidual vasculopathy. We propose to test these hypothesised pathways and mechanisms in a nested case-control study within a prospectively recruited and followed cohort of pregnant women with singleton pregnancies who deliver at one of four Montreal hospitals that serve an ethnically and socio-economically diverse population. Following recruitment during the late first or early second trimester, participating women are seen at 24-26 weeks, when a research nurse obtains a detailed medical and obstetric history; administers several scales to assess chronic and acute stressors and psychological function; obtains blood samples for CRH, red blood cell and plasma folate, homocysteine, and DNA for the MTHFR mutation; and performs a digital and speculum examination to measure cervical length and vaginal pH and to obtain swabs for bacterial vaginosis and fetal fibronectin. After delivery, each case (delivery at < 37 completed weeks following spontaneous onset of labour or prelabour rupture of membranes) and two controls are selected for placental pathological examination, hair analysis of cotinine, cocaine, and benzoylecgonine, and analysis of stored blood and vaginal specimens. Statistical analysis will be based on multiple logistic regression and structural equation modelling, with sequential construction of models of potential aetiological determinants and covariates to test the hypothesised causal pathways and mechanisms. The research we propose should improve understanding of the factors and processes that mediate social disparities in preterm birth. This improved understanding should help not only in developing strategies to reduce the disparities but also in suggesting preventive interventions applicable across the entire socio-economic spectrum.
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Affiliation(s)
- M S Kramer
- Department of Pediatrics, McGill University, 1020 Pine Avenue West, Montreal, Quebec, Canada H3A 1A2.
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43
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Abstract
BACKGROUND Nonoperative management has been validated as a standard of care for patients with blunt hepatic trauma. We herein study the correlation of intra-abdominal pressure (IAP) and other clinical parameters to predict the failure of nonoperative management, and attempt to use IAP to determine further therapeutic options. METHODS During a 9-month period, 25 hemodynamically stable patients sustaining grades III to V blunt hepatic injuries were prospectively studied. They were admitted to the intensive care unit for clinical reevaluation, and hemodynamic and IAP monitoring. If the patient developed an IAP greater than 25 cm H(2)O, then an emergent laparotomy or laparoscopy was performed to achieve hemostasis and decompression of intra-abdominal hypertension (IAH). On the basis of an IAP of 25 cm H(2)O, the correlation between the IAP and an estimated amount of liver-related transfusion, the Pao(2)/Fio(2) ratio and peritoneal signs were analyzed. RESULTS Of the 25 patients being studied, 20 (80%) had an IAP below 25 cm H(2)O, 1 of whom was found to have a pelvic abscess from an amputated segment of liver. On the other hand, five other patients with an IAP greater than 25 cm H(2)O received decompression and laparoscopic examinations, and one needed an open hepatorrhaphy. In general, though, 19 patients (76%) were successfully treated without operation. All recovered well after different therapeutic regimens; however, two developed liver abscesses, for a morbidity rate of 8% (2 of 25). This analysis revealed a strong association between the IAP value and the presence of peritoneal signs (Phi coefficient = 0.890, p < 0.001), but not in the estimated amount of liver-related transfusion and Pao(2)/Fio(2) ratio. CONCLUSION This preliminary investigation suggests that IAH or abdominal compartment syndrome can develop while patients receive nonoperative management for grade III to V blunt hepatic injuries. There were no parameters that precisely reflected ongoing hepatic hemorrhage or predicted hemodynamic instability. Although the amount of hepatic hemorrhage was not accurately measured by the IAP, it could be reflected by an increased IAP. During nonoperative management, IAP monitoring may be a simple and objective guideline to suggest further intervention for patients with blunt hepatic trauma. Laparoscopic hepatic evaluation and abdominal decompression may be helpful in this situation.
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Affiliation(s)
- R J Chen
- Department of Trauma and Emergency Surgery, Department of Surgery, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan.
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44
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Abstract
BACKGROUND AND OBJECTIVES Angiomyolipoma is a rare benign tumor that occurs in the liver and other organs. We provide data on eight cases of hepatic angiomyolipoma, regarding clinical presentations, diagnoses, management, and prognosis. METHODS A retrospective review of medical records of the eight patients with hepatic angiomyolipoma treated at the Chang Gung Memorial Hospital-Taipei between October 1988 and October 1999. RESULTS Eight female patients with hepatic angiomyolipoma were identified, with ages ranging from 30 to 66 years (mean, 45.3 years). Abdominal pain was the most common symptom, occurring in six of eight patients (75%). Hepatocellular carcinoma was the most common preoperative diagnosis, occurring in three of eight patients (37.5%). Laparotomy was performed in seven of eight patients (87.5%). Among these seven patients, three patients (43%) received hepatic resection with 100% cure rate to date. One of the eight patients (12.5%) was closely follow up after diagnosis made by echo-guided needle biopsy. CONCLUSIONS Hepatic angiomyolipoma is a rare and benign entity. It has a wide variation and poses a diagnostic challenge clinically, radiologically, and pathologically. Its prognosis is good regardless of management, including hepatic resection or conservative treatment after tissue biopsy by echo-guided needle. To alleviate the mass effect, surgical resection may be needed for hepatic angiomyolipoma in selected cases.
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Affiliation(s)
- C N Yeh
- Department of Surgery, Chang Gung Memorial Hospital, Kwei-Shan, Taoyuan, Taiwan.
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45
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Yeh CN, Jan YY, Chao TC, Chen MF. Laparoscopic cholecystectomy for polypoid lesions of the gallbladder: a clinicopathologic study. Surg Laparosc Endosc Percutan Tech 2001; 11:176-81. [PMID: 11444747] [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]
Abstract
The size and number of gallbladder polyps are used to differentiate between benign and malignant lesions before surgery and to determine whether surgery is necessary for the lesion. Since 1987, laparoscopic cholecystectomy has been widely used as the management method of choice for gallbladder lesions. The results of a clinicopathologic study of polypoid lesions of the gallbladder, based completely on laparoscopically resected gallbladder tissue, have not yet been evaluated fully. Data from 123 patients with polypoid lesions of the gallbladder treated by laparoscopic cholecystectomy were reviewed retrospectively. The gallbladders were classified into four histologic groups. Clinical features, maximal diameter, and the number of lesions were compared among the groups. The mean age of patients with adenoma and cancer was significantly greater than that of patients with cholesterol polyps and other lesions. More women than men had a neoplasm (adenoma and cancer). Patients in the neoplasm group tended to have a single lesion. The mean maximal diameter of neoplasms was significantly larger than that of lesions in the nonneoplasm group. All seven malignant lesions that were detected measured at least 1.5 cm. Univariate analysis showed that polypoid lesions of the gallbladder with neoplastic lesions correlated significantly with age, sex, size, and number of the lesions. Univariate analysis also showed that malignancy in polypoid lesions of the gallbladder correlated significantly with age, size, and number of the lesions. Multivariate logistic regression analysis showed that the age of the patient and the size of the lesion (> or = 1.0 cm) are two independent factors in predicting neoplastic lesions in polypoid lesions of the gallbladder. The size of the lesion (> or = 1.5 cm) is the only independent factor in predicting malignancy in the polypoid lesions of the gallbladder as shown by multivariate logistic regression analysis. Laparoscopic cholecystectomy is a safe and feasible method for gallbladder polypoid lesions. Neoplastic change in polypoid lesions of the gallbladder should be considered when a patient older than 50 years of age has a polypoid lesion larger than 1.0 cm. Cancer should be suspected when a polypoid lesion of the gallbladder is larger than 1.5 cm, and an aggressive surgical approach is warranted so that early gallbladder cancer can be detected and patients can have an increased chance of cure.
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Affiliation(s)
- C N Yeh
- Department of Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan
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46
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Hsu HC, Lee YT, Yeh HT, Chen MF. Effect of gemfibrozil on the composition and oxidation properties of very-low-density lipoprotein and high-density lipoprotein in patients with hypertriglyceridemia. J Lab Clin Med 2001; 137:414-21. [PMID: 11385362 DOI: 10.1067/mlc.2001.114991] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Recent studies suggest that both oxidized very-low-density lipoprotein (VLDL) and oxidized high-density lipoprotein (HDL) may play a role in the pathogenesis of atherosclerosis. Gemfibrozil is widely used and is reported to decrease VLDL levels and increase HDL levels. The aim of this study was to investigate the effect of gemfibrozil on the chemical composition and oxidative susceptibility of VLDL and HDL and their relationship with atherosclerosis. Twenty patients with hypertriglyceridemia were treated with 300 mg gemfibrozil, 3 times daily, for 12 weeks. Venous blood samples were collected before treatment, at the end of treatment, and 4 weeks after the end of treatment. Gemfibrozil effectively lowered concentrations of plasma lipid, apolipoprotein (apo) B, and apo E. The lipid and protein content of VLDL were also decreased, but not by the same extent. The surface-to-core ratio and apo E/apo B ratio of VLDL particles were increased after gemfibrozil treatment. HDL(2) cholesteryl ester and HDL(3) apo A-II content were also increased. Gemfibrozil treatment lowered levels of lipid peroxides in both VLDL and HDL particles. The susceptibility of VLDL to oxidation was unchanged, whereas maximal peroxide production was decreased. The oxidative susceptibility of both HDL(2) and HDL(3) decreased with gemfibrozil treatment. These results indicate that after gemfibrozil treatment, VLDL and HDL particles in patients with hypertriglyceridemia are less atherogenic, which may explain why gemfibrozil treatment is beneficial in terms of coronary heart disease in hypertriglyceridemia.
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Affiliation(s)
- H C Hsu
- Department of Internal Medicine (Cardiology), National Taiwan University Medical Center
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47
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Abstract
In the present study, the effectiveness of sheng-ji-san (SJS) in promoting the healing of pressure ulcers was evaluated. Thirty-two patients with pressure ulcers were divided into two groups. The treated group received routine medical care combined with SJS treatment and the control group received only routine medical care. After three weeks, the treated group showed a significant reduction in both surface area and depth grade, while the control group showed no significant change. The reduction ratio of the surface area of the ulcer and the effectiveness ratio for the treated group were significantly higher than for the control group. Multiple Linear Regression Analysis revealed that only the SJS treatment was significantly associated with the reduction of surface area and that the use of SJS could independently explain the observed high effectiveness ratio and a relatively high Odds Ratio of 9.539. These results indicate that SJS is effective in promoting the healing of pressure ulcers and should be considered as an adjuvant to routine therapy.
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Affiliation(s)
- Y C Hsu
- Chi-Mei Foundation Hospital, Tainan, Taiwan
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48
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Abstract
PURPOSE The goal of this study was to identify the proportion of sequestrations that were atypical or associated with other entities, such as congenital cystic adenomatoid malformations, communicating bronchopulmonary foregut malformations, bronchogenic cyst, and scimitar syndrome. METHODS All charts of patients with pulmonary sequestration admitted at 2 children's hospitals from 1982 to July 1999 were reviewed retrospectively. The authors included all anomalies with a systemic arterial supply or without bronchial connection. RESULTS Only 22 of the 39 patients (56%) had a classic isolated extralobar or intralobar sequestration, whereas the others presented with a spectrum of anomalies. Of the 13 cases diagnosed prenatally, 85% were asymptomatic at birth. In contrast, 26 cases diagnosed postnatally were all symptomatic, with those patients less than 2 weeks old presenting with various degrees of respiratory distress, and those older than 2 weeks old presenting with respiratory infections. The correct diagnosis was made preoperatively in 59% of cases. Only 4 patients did not undergo resection of their lesion, of which, 1 underwent interventional radiology with embolization of the anomalous arterial supply. Follow-up issues of importance included pneumonia, asthma, gastroesophageal reflux, and pectus excavatum. CONCLUSIONS Sequestrations represent a spectrum of anomalies that overlap with other lung lesions. To facilitate management, they should be described according to their (1) connection to the tracheobronchial tree, (2) visceral pleura, (3) arterial supply, (4) venous drainage, (5) foregut communication, (6) histology, (7) mixed/multiple lesions, and (8) whether there are associated anomalies. Surgeons should be aware that approximately 50% of sequestrations could be atypical or associated with other anomalies. This should be kept in mind when weighing the benefits of resection versus conservative management of pulmonary sequestrations.
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Affiliation(s)
- I Bratu
- Divisions of Pediatric Surgery and Pediatric Pathology, The Montreal Children's Hospital and Ste Justine Hospital, McGill University and University of Montreal, Montreal, Quebec, Canada
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Yeh TS, Jan YY, Chao TC, Chien RN, Chen TC, Chen MF. Refractory pancreatitis secondary to ruptured hepatocellular carcinoma into the common bile duct. Dig Dis Sci 2001; 46:1029-33. [PMID: 11341645 DOI: 10.1023/a:1010757927696] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Affiliation(s)
- T S Yeh
- Department of Surgery, Chang-Gung Memorial Hospital, Chang-Gung University, Taipei, Taiwan
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50
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Harada K, Zen Y, Kanemori Y, Chen TC, Chen MF, Yeh TS, Jan YY, Masuda S, Nimura Y, Takasawa S, Okamoto H, Nakanuma Y. Human REG I gene is up-regulated in intrahepatic cholangiocarcinoma and its precursor lesions. Hepatology 2001; 33:1036-42. [PMID: 11343228 DOI: 10.1053/jhep.2001.24168] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The Reg I gene (regenerating gene) and its product (Reg protein) are a regenerating and/or proliferating factor(s) of pancreatic islet cells. The ectopic expression of REG Ialpha was shown in colorectal carcinomas, suggesting that REG Ialpha is related to their carcinogenesis. In this study, we examined the expression of REG I in intrahepatic cholangiocarcinoma (ICC) and its precursor lesion (biliary dysplasia). By polymerase chain reaction and in situ hybridization (ISH) studies using a total of 16 fresh liver specimens, REG Ialpha mRNA was demonstrated in 6 of 11 (55%) ICC cases, but in 0 of 5 (0%) normal livers. Immunohistochemistry for REG I protein was performed in 100 formalin-fixed, paraffin-embedded sections obtained from the 18 cases of ICC alone, 45 hepatolithiasis with ICC (n = 19) or biliary dysplasia (n = 26), 21 hepatolithiasis alone (all with hyperplasia), and 16 normal livers. In ICC, the expression of REG I protein was significantly dependent on the histologic differentiation; 12 of 13 (92%) cases in papillary and well-differentiated, 6 of 16 (38%) cases in moderately differentiated, and 0 of 8 (0%) cases in poorly differentiated types. Moreover, in the lesions of hyperplasia, low-grade dysplasia, and high-grade dysplasia in hepatolithiasis, REG I protein was expressed in 4 of 21 (19%), 7 of 12 (58%), and 13 of 14 (93%) cases, respectively. In normal liver, intrahepatic bile ducts were constantly negative for REG I protein. These findings suggest that neoexpression of REG I is a good marker for biliary mucosa at risk for development of ICC, and also that REG I plays a role in the early stages of biliary carcinogenesis, probably via a cell-proliferative effect.
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Affiliation(s)
- K Harada
- Department of Pathology (II), Kanazawa University School of Medicine, Kanazawa, Japan
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