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Zhang ZC, Li TT, Yu ST, Ge JN, Wei ZG, Sun BH, Chen WS, Tan J, Lei ST. [Retrospective analysis of 350 cases with dissection of lymph nodes posterior to right recurrent laryngeal nerve in endoscopic thyroidectomy through gasless axillary posterior approach]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2024; 59:21-26. [PMID: 38246755 DOI: 10.3760/cma.j.cn115330-20231014-00146] [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: 01/23/2024]
Abstract
Objective: To evaluated the safety and feasibility of dissection of lymph nodes posterior to right recurrent laryngeal nerve (ⅥB compartment) in endoscopic thyroidectomy through gasless axillary posterior approach. Methods: A total of 350 cases with right lobe papillary thyroid carcinoma (PTC) who underwent endoscopic lobectomy, isthmusectomy and central compartment neck dissection via gasless axillary posterior approach based at the Department of General Surgery, Nanfang Hospital, Southern Medical University from June 2020 to December 2022 were retrospectively analyzed. Summarize the clinical, pathological characteristics, and postoperative complications of the patients. SPSS 25.0 was used for statistical analysis of the data. Results: All 350 patients underwent endoscopic surgery successfully, with no conversion to open surgery. There were 303 females and 47 males, with an average age of (36.3±9.2) years. Of those, 287 patients were in pT1a stage, 62 in pT1b stage, and one patient in pT2 stage. There was no T3 or T4 stage patient. The mean numbers of yielded lymph nodes in right central compartment and ⅥB compartment were 8.11±4.65 (range, 1-31) and 2.62±1.86 (range, 1-12), respectively. ⅥB compartment metastasis was detected in 52 (14.86%) of 350 patients. The incidence of transient recurrent laryngeal nerve injury was 0.86%(3/350). Postoperative hematoma occurred in three patients (0.86%). Conclusion: The dissection of ⅥB compartment in endoscopic thyroidectomy through gasless axillary posterior approach is safe and feasible in selected PTC patients.
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Affiliation(s)
- Z C Zhang
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - T T Li
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - S T Yu
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - J N Ge
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Z G Wei
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - B H Sun
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - W S Chen
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - J Tan
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - S T Lei
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
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Han YY, Zhang QH, Chen WS, Li ZL, Xie D, Zhang SL, Lu H, Wang LW, Xu ZH, Zhang LZ. Fermented rape pollen powder can alleviate benign prostatic hyperplasia in rats by reducing hormone content and changing gut microbiota. Benef Microbes 2023; 14:503-524. [PMID: 38656098 DOI: 10.1163/18762891-20230039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 09/22/2023] [Indexed: 04/26/2024]
Abstract
Benign prostatic hyperplasia (BPH) can cause urethral compression, bladder stone formation, and renal function damage, which may endanger the life of patients. Therefore, we aimed to develop plant-based preparations for BPH treatment with no side effects. In this study, the Lactiplantibacillus plantarum 322Hp, Lactobacillus acidophilus 322Ha, and Limosilactobacillus reuteri 322Hr were used to ferment rape pollen. The fermented rape pollen was subsequently converted into fermented rape pollen powder (FRPP) through vacuum freeze-drying technology. After fermenting and drying, the bioactive substances and antioxidant capacity of FRPP were significantly higher than those of unfermented rapeseed pollen, and FRPP had a longer storage duration, which can be stored for over one year. To investigate the therapeutic effect of FRPP on BPH, a BPH rat model was established by hypodermic injection of testosterone propionate. The BPH rats were treated differently, with the model group receiving normal saline, the positive control group receiving finasteride, and the low, medium, and high dose FRPP group receiving FRPP at doses of 0.14 g/kg/d, 0.28 g/kg/d, and 0.56 g/kg/d, respectively. The results indicate that medium dose FRPP reduced the levels of hormone such as testosterone, dihydrotestosterone, and oestradiol in rats with BPH by about 32%, thus bringing the prostate tissue of BPH rats closer to normal. More importantly, medium dose FRPP treatment had a significant effect on the composition of gut microbiota in rats with BPH, increasing the levels of beneficial genera (such as Coprococcus and Jeotgalicoccus), and decreasing the levels of harmful pathogens (such as Turicibacter and Clostridiaceae_Clostridium) in the gut. This study showed that medium dose FRPP reduced the hormone level and regulated the unbalanced gut microbiota in BPH rats, thereby alleviating BPH.
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Affiliation(s)
- Y Y Han
- College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang, 330045, China P.R
| | - Q H Zhang
- College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang, 330045, China P.R
| | - W S Chen
- Nanjing Jiufengtang Bee Products Co., Ltd, Nanjing, 210000, China P.R
| | - Z L Li
- College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang, 330045, China P.R
| | - D Xie
- College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang, 330045, China P.R
| | - S L Zhang
- College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang, 330045, China P.R
| | - H Lu
- College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang, 330045, China P.R
| | - L W Wang
- College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang, 330045, China P.R
| | - Z H Xu
- College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang, 330045, China P.R
| | - L Z Zhang
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, 330045, China P.R
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Chen WS, Tuchayi AM, Witztum A, Carroll P, Small E, Feng FY, Hope T, Hong JC. Utility of PSMA PET Guided Metastasis-Directed Radiotherapy. Int J Radiat Oncol Biol Phys 2023; 117:e372. [PMID: 37785268 DOI: 10.1016/j.ijrobp.2023.06.2473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Metastasis-directed radiotherapy (MDT) is becoming a mainstay in the management of oligometastatic prostate cancer (PCa), and PSMA-PET is currently the most sensitive imaging modality for PCa metastasis screening. The efficacy of MDT guided by PSMA-PET imaging has not yet been well characterized. Moreover, the optimal role of androgen deprivation therapy (ADT) in the context of MDT is not known. We sought to assess the efficacy of PSMA PET-guided MDT in patients with metastatic PCa treated with and without ADT. MATERIALS/METHODS This is a single institutional retrospective study of patients diagnosed with metastatic prostate cancer by PSMA-PET imaging who were treated with MDT. Biochemical progression was defined as a PSA increase of ≥ 25% and ≥ 2 ng/mL if PSA was ≥ 2 ng/mL at time of initiating salvage treatment, or a PSA increase of ≥ 25% if PSA was < 2 ng/mL at time of salvage treatment. Survival analyses were performed using the Kaplan-Meier method with log-rank testing for significance. Cumulative incidence analyses were performed with Gray's testing for significance. Adverse event data were assessed per CTCAE v5 guidelines. RESULTS A total of 196 PSMA PET-avid lesions from 101 patients were irradiated with stereotactic body radiotherapy (SBRT). Median time from prior definitive locoregional therapy to MDT was 6.2 years. 79 patients had hormone-sensitive PCa (HSPC) and 22 patients had castration-resistant PCa (CRPC) at time of MDT. 47 of 79 (59%) patients with HSPC received ADT along with MDT, and 20 of the 47 patients received augmented ADT. 25 of the 32 (78%) HSPC patients receiving MDT without ADT had undergone at least one prior course of ADT, and none had castrate levels of testosterone at time of MDT with a median testosterone level of 341 ng/dl. With a median follow-up of 22.4 months, 5 of 196 lesions (2.6%) demonstrated radiographic progression. 2-year cumulative incidence of progression from HSPC to CRPC was 11% in patients who received ADT at time of MDT and 35% in those who did not (P = 0.027). Median biochemical progression free survival of patients with CRPC, HSPC treated without ADT, and HSPC treated with ADT following MDT was 5.4, 7.6, and 43.9 months respectively (P<0.0001). 2-year overall survival of the abovementioned groups was 72.2%, 100%, and 97.5% respectively (P<0.001). No Grade 3-5 adverse effects were observed. CONCLUSION MDT guided by PSMA-PET imaging is well-tolerated and delays biochemical progression in patients with CRPC and HSPC, with a greater effect observed in patients also receiving ADT.
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Affiliation(s)
- W S Chen
- Department of Radiation Oncology, University of California San Francisco, San Francisco, CA
| | - A Moradi Tuchayi
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA
| | - A Witztum
- Department of Radiation Oncology, University of California San Francisco, San Francisco, CA
| | - P Carroll
- Department of Urology, University of California San Francisco, San Francisco, CA
| | - E Small
- Division of Hematology and Oncology, Department of Medicine, University of California San Francisco, San Francisco, CA
| | - F Y Feng
- Department of Radiation Oncology, University of California San Francisco, San Francisco, CA
| | - T Hope
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA
| | - J C Hong
- Department of Radiation Oncology, University of California San Francisco, San Francisco, CA
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Ou JY, Chen WS, Chen MJ, Zhao LZ, Li LH, Peng L, Liang L, Shi YL. [Effects of ppk1 deletion on the drug susceptibility of uropathogenic Escherichia coli producing ESBLs]. Zhonghua Yu Fang Yi Xue Za Zhi 2023; 57:1238-1245. [PMID: 37574318 DOI: 10.3760/cma.j.cn112150-20220906-00876] [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: 08/15/2023]
Abstract
To investigate the effect and the mechanism of ppk1 gene deletion on the drug susceptibility of uropathogenic Escherichia coli producing extended-spectrum beta-lactamases (ESBLs-UPEC). The study was an experimental study. From March to April 2021, a strain of ESBLs-UPEC (genotype was TEM combined with CTX-M-14) named as UE210113, was isolated from urine sample of the patient with urinary tract infection in the Laboratory Department of Guangzhou Eighth People's Hospital, meanwhile its ppk1 gene knock-out strain Δpk1 and complemented strain Δpk1-C were constructed by suicide plasmid homologous recombination technique, which was used to study the effect of ppk1 gene on ESBLs-UPEC drug sensitivity and its mechanism. The drug susceptibility of UE210113, Δpk1, and Δpk1-C were measured by Vitek2 Compact System and broth microdilution method. The quantitative expression of ESBLs, outer membrane protein and multidrug efflux systems encoding genes of UE210113, Δpk1 and Δpk1-C were performed by using qRT-PCR analysis. By using two independent sample Mann-Whitney U test, the drug susceptibility results showed that, compared with UE210113 strain, the sensitivities of Δpk1 to ceftazidime, cefepime, tobramycin, minocycline and cotrimoxazole were enhanced (Z=-2.121,P<0.05;Z=-2.236,P<0.05;Z=-2.236,P<0.05;Z=-2.121,P<0.05), and the drug susceptibility of Δpk1-C restored to the same as which of UE210113 (Z=0,P>0.05). The expression levels of ESBLs-enconding genes blaTEM and blaCTX-M-14 in Δpk1 were significantly down-regulated compared with UE210113, but the expression was not restored in Δpk1-C. The expression of outer membrane protein gene omp F in Δpk1 was significantly up-regulated, while the expression of omp A and omp C were down-regulated. The results showed that the expression of multidrug efflux systems encoding genes tol C, mdt A and mdtG were down-regulated in Δpk1 compared with UE210113. The expression of all of the outer membrane protein genes and the multidrug efflux systems genes were restored in Δpk1-C. In conclusion,the lost of ppk1 gene can affect the expression of the outer membrane protein and multidrug efflux systems encoding genes of ESBLs-UPEC, which increase the sensitivity of ESBLs-UPEC to various drugs.
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Affiliation(s)
- J Y Ou
- Department of Clinical Laboratory, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou 510440 China
| | - W S Chen
- Department of Clinical Laboratory, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou 510440 China
| | - M J Chen
- Department of Clinical Laboratory, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou 510440 China
| | - L Z Zhao
- Department of Clinical Laboratory, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou 510440 China
| | - L H Li
- Infectious Department, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou 510440, China
| | - L Peng
- Department of Clinical Laboratory, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou 510700, China
| | - L Liang
- The KingMed College of Laboratory Medicine,Guangzhou Medical University, Guangzhou 511436, China
| | - Y L Shi
- Department of Clinical Laboratory, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou 510440 China
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Chen WS, Hsu MC. Ultrasound-Assisted Mineralization of 2,4-Dinitrotoluene in Industrial Wastewater Using Persulfate Coupled with Semiconductors. Molecules 2023; 28:molecules28114351. [PMID: 37298827 DOI: 10.3390/molecules28114351] [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: 04/13/2023] [Revised: 05/22/2023] [Accepted: 05/23/2023] [Indexed: 06/12/2023] Open
Abstract
Oxidative degradation of 2,4-dinitrotoluenes in aqueous solution was executed using persulfate combined with semiconductors motivated by ultrasound (probe type, 20 kHz). Batch-mode experiments were performed to elucidate the effects of diverse operation variables on the sono-catalytic performance, including the ultrasonic power intensity, dosage of persulfate anions, and semiconductors. Owing to pronounced scavenging behaviors caused by benzene, ethanol, and methanol, the chief oxidants were presumed to be sulfate radicals which originated from persulfate anions, motivated via either the ultrasound or sono-catalysis of semiconductors. With regard to semiconductors, the increment of 2,4-dinitrotoluene removal efficiency was inversely proportional to the band gap energy of semiconductors. Based on the outcomes indicated in a gas chromatograph-mass spectrometer, it was sensibly postulated that the preliminary step for 2,4-dinitrotoluene removal was denitrated into o-mononitrotoluene or p-mononitrotoluene, followed by decarboxylation to nitrobenzene. Subsequently, nitrobenzene was decomposed to hydroxycyclohexadienyl radicals and converted into 2-nitrophenol, 3-nitrophenol, and 4-nitrophenol individually. Nitrophenol compounds with the cleavage of nitro groups synthesized phenol, which was sequentially transformed into hydroquinone and p-benzoquinone.
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Affiliation(s)
- Wen-Shing Chen
- Department of Chemical and Materials Engineering, National Yunlin University of Science & Technology, Yunlin, Douliou 64002, Taiwan
| | - Min-Chih Hsu
- Department of Chemical and Materials Engineering, National Yunlin University of Science & Technology, Yunlin, Douliou 64002, Taiwan
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Chen WS, Chen ZY, Chang JY, Chen CY, Zeng YP. Ultrasound-assisted desalination of crude oil: The influence of mixing extent, crude oil species, chemical demulsifier and operation variables. Ultrason Sonochem 2022; 83:105947. [PMID: 35151193 PMCID: PMC8844829 DOI: 10.1016/j.ultsonch.2022.105947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 01/23/2022] [Accepted: 02/03/2022] [Indexed: 06/14/2023]
Abstract
Coalescence of water droplets in crude oil has been effectively promoted by chemical demulsifiers integrated with ultrasound. Temporary images of water droplets in W/O emulsions were directly monitored using a metallurgical microscope. Water droplets achieved expansion of 118% at 40 min ultrasonic irradiation time under well mixing conditions. However, water droplets in heavy crude oil undergo less aggregation than those in light crude oil, due to resistance of mobility in highly viscous fluid. In the absence of chemical demulsifiers, water droplets enveloped by native surfactants appeared to aggregate arduously because of occurrence of interfacial tension gradients. Influential significance analyses have been executed by a factorial design method on operation variables, including acoustic power intensity, operation temperature, ultrasonic irradiation time and chemical demulsifier dosages. In this work, the outcomes indicate that the optimal operating conditions for desalination of crude oil assisted by ultrasound were as follows: acoustic power intensity = 300 W, operation temperature = 90℃, ultrasonic irradiation time = 75 min and chemical demulsifier dosages = 54 mg/L. Besides, it was found that the most influential importance of operation parameter was temperature, followed with acoustic power intensity, ultrasonic irradiation time and chemical demulsifier dosages.
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Affiliation(s)
- Wen-Shing Chen
- Department of Chemical and Materials Engineering, National Yunlin University of Science & Technology, Yunlin 640, Taiwan, ROC.
| | - Zi-Yin Chen
- Department of Chemical and Materials Engineering, National Yunlin University of Science & Technology, Yunlin 640, Taiwan, ROC
| | - J Y Chang
- Refining & Manufacturing Research Institute, CPC Corporation, Chia-Yi 600, Taiwan, ROC
| | - Chao-Yuh Chen
- Refining & Manufacturing Research Institute, CPC Corporation, Chia-Yi 600, Taiwan, ROC
| | - Yun-Pei Zeng
- Refining & Manufacturing Research Institute, CPC Corporation, Chia-Yi 600, Taiwan, ROC
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Chen WS, Liu YC. Photocatalytic degradation of nitrobenzene in wastewater by persulfate integrated with Ag/Pb 3O 4 semiconductor under visible light irradiation. Heliyon 2021; 7:e06984. [PMID: 34136672 PMCID: PMC8180619 DOI: 10.1016/j.heliyon.2021.e06984] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 02/04/2021] [Revised: 02/10/2021] [Accepted: 04/29/2021] [Indexed: 11/16/2022] Open
Abstract
Nitrobenzene oxidation was executed utilizing an innovative method, in which Ag/Pb3O4 semiconductors irradiated by visible light were used for activation of persulfate into sulfate radicals. Batch mode experiments were accomplished to elucidate the effect of persulfate concentrations and Ag/Pb3O4 dosages on the nitrobenzene oxidation behaviors. The physicochemical properties of original and reacted Ag/Pb3O4 were illustrated by X-ray diffraction analyses, UV-Vis diffuse reflectance spectra, FE-SEM images, EDS analyses, photoluminescence spectra and X-ray photoelectron spectra, respectively. The main oxidant was hypothesized to be sulfate radicals, induced from persulfate caused by photocatalysis of Ag/Pb3O4. It was clearly reflected on the scavenging experiments with addition of benzene, ethanol and methanol individually. As far as degradation pathways concerned, nitrobenzene was essentially transformed into hydroxycyclohexadienyl radicals, and sequentially converted to 2-nitrophenol, 3-nitrophenol or 4-nitrophenol simultaneously. Denitration of nitrophenols gave rise to synthesis of phenol, followed with generation of hydroquinone and p-benzoquinone.
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Affiliation(s)
- Wen-Shing Chen
- Department of Chemical and Materials Engineering, National Yunlin University of Science & Technology, 123 University Road, Section 3, Douliou, Yunlin 640, Taiwan
| | - Yi-Chen Liu
- Department of Chemical and Materials Engineering, National Yunlin University of Science & Technology, 123 University Road, Section 3, Douliou, Yunlin 640, Taiwan
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Chen WS, Zhang ML, Han B. [Comparison of genetic mutations in myelodysplastic syndrome and acute myeloid leukemia]. Zhonghua Xue Ye Xue Za Zhi 2021; 42:171-176. [PMID: 33858051 PMCID: PMC8071666 DOI: 10.3760/cma.j.issn.0253-2727.2021.02.015] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Indexed: 11/23/2022]
Affiliation(s)
- W S Chen
- Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - M L Zhang
- Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - B Han
- Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China
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Ying RS, Le T, Cai WP, Li YR, Luo CB, Cao Y, Wen CY, Wang SG, Ou X, Chen WS, Chen SZ, Guo PL, Chen M, Guo Y, Tang XP, Li LH. Clinical epidemiology and outcome of HIV-associated talaromycosis in Guangdong, China, during 2011-2017. HIV Med 2020; 21:729-738. [PMID: 33369035 PMCID: PMC7978497 DOI: 10.1111/hiv.13024] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/10/2020] [Indexed: 01/25/2023]
Abstract
OBJECTIVES Talaromycosis is an invasive mycosis endemic to Southeast Asia. This study aimed to investigate the epidemiology, clinical features and prognostic factors of HIV-associated talaromycosis in Guangdong, China. METHODS We retrospectively evaluated HIV patients hospitalized with histopathology- or culture-confirmed talaromycosis between 2011 and 2017. Factors associated with poor prognosis were identified using logistic regression. RESULTS Overall, 1079 patients with HIV-associated talaromycosis were evaluated. Both the number and prevalence of talaromycosis among HIV admissions increased from 125 and 15.7% in 2011 to 253 and 18.8% in 2017, respectively, reflecting the increase in HIV admissions. Annual admissions peaked during the rainy season between March and August. Common clinical manifestations included fever (85.6%), peripheral lymphadenopathy (72.3%), respiratory symptoms (60.8%), weight loss (49.8%), skin lesions (44.5%) and gastrointestinal symptoms (44.3%). Common laboratory abnormalities were hypoalbuminaemia (98.6%), anaemia (95.6%), elevated aspartate aminotransferase level (AST) (76.9%), elevated alkaline phosphatase level (55.8%) and thrombocytopenia (53.7%). The median CD4 count was 9 cells/μL. Talaromyces marneffei was isolated from blood and bone marrow cultures of 66.6% and 74.5% of patients, respectively. The rate increased to 86.6% when both cultures were performed concurrently. At discharge, 14% of patients showed worsening conditions or died. Leucocytosis, thrombocytopenia, elevated AST, total bilirubin, creatinine and azole monotherapy independently predicted poor prognosis. CONCLUSIONS The incidence of HIV-associated talaromycosis has increased in Guangdong with the high HIV burden in China. Skin lesions were seen in less than half of patients. Induction therapy with azole alone is associated with higher mortality. Findings from this study should help to improve treatment of the disease.
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Affiliation(s)
- R S Ying
- Infectious Disease Center, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - T Le
- Division of Infectious Diseases and International Health, Duke University School of Medicine, Durham, NC, USA
- Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam
| | - W P Cai
- Infectious Disease Center, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - Y R Li
- Department of Medical Statistics, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - C B Luo
- Infectious Disease Center, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - Y Cao
- Infectious Disease Center, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - C Y Wen
- Infectious Disease Center, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - S G Wang
- Infectious Disease Center, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - X Ou
- Infectious Disease Center, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - W S Chen
- Infectious Disease Center, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - S Z Chen
- Infectious Disease Center, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - P L Guo
- Infectious Disease Center, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - M Chen
- Hospital-Acquired Infection Control Department, Bijie Third People's Hospital, Bijie, China
| | - Y Guo
- Department of Medical Statistics, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - X P Tang
- Infectious Disease Center, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - L H Li
- Infectious Disease Center, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China
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Zhao D, Che NY, Song ZG, Liu CC, Wang L, Shi HY, Dong YJ, Lin HF, Mu J, Ying L, Yang QC, Gao YN, Chen WS, Wang SH, Xu W, Jin ML. [Pathological diagnosis of lung cancer based on deep transfer learning]. Zhonghua Bing Li Xue Za Zhi 2020; 49:1120-1125. [PMID: 33152815 DOI: 10.3760/cma.j.cn112151-20200615-00471] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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 establish an artificial intelligence (AI)-assisted diagnostic system for lung cancer via deep transfer learning. Methods: The researchers collected 519 lung pathologic slides from 2016 to 2019, covering various lung tissues, including normal tissues, adenocarcinoma, squamous cell carcinoma and small cell carcinoma, from the Beijing Chest Hospital, the Capital Medical University. The slides were digitized by scanner, and 316 slides were used as training set and 203 as the internal test set. The researchers labeled all the training slides by pathologists and establish a semantic segmentation model based on DeepLab v3 with ResNet-50 to detect lung cancers at the pixel level. To perform transfer learning, the researchers utilized the gastric cancer detection model to initialize the deep neural network parameters. The lung cancer detection convolutional neural network was further trained by fine-tuning of the labeled data. The deep learning model was tested by 203 slides in the internal test set and 1 081 slides obtained from TCIA database, named as the external test set. Results: The model trained with transfer learning showed substantial accuracy advantage against the one trained from scratch for the internal test set [area under curve (AUC) 0.988 vs. 0.971, Kappa 0.852 vs. 0.832]. For the external test set, the transferred model achieved an AUC of 0.968 and Kappa of 0.828, indicating superior generalization ability. By studying the predictions made by the model, the researchers obtained deeper understandings of the deep learning model. Conclusions: The lung cancer histopathological diagnostic system achieves higher accuracy and superior generalization ability. With the development of histopathological AI, the transfer learning can effectively train diagnosis models and shorten the learning period, and improve the model performance.
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Affiliation(s)
- D Zhao
- Department of Pathology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - N Y Che
- Department of Pathology, Beijing Chest Hospital, Capital Medical University/Beijing Tuberculosis and Thoracic Tumor Institute, Beijing 101149, China
| | - Z G Song
- Department of Pathology, the First Medical Center of PLA General Hospital, Beijing 100853, China
| | - C C Liu
- Thorough Images Co. LTD, Beijing 100083, China
| | - L Wang
- Thorough Images Co. LTD, Beijing 100083, China
| | - H Y Shi
- Department of Pathology, the First Medical Center of PLA General Hospital, Beijing 100853, China
| | - Y J Dong
- Department of Pathology, Beijing Chest Hospital, Capital Medical University/Beijing Tuberculosis and Thoracic Tumor Institute, Beijing 101149, China
| | - H F Lin
- Department of Pathology, Beijing Chest Hospital, Capital Medical University/Beijing Tuberculosis and Thoracic Tumor Institute, Beijing 101149, China
| | - J Mu
- Department of Pathology, Beijing Chest Hospital, Capital Medical University/Beijing Tuberculosis and Thoracic Tumor Institute, Beijing 101149, China
| | - L Ying
- Department of Pathology, the Fourth Hospital of Inner Mongolia Autonomous Region, Huhhot 010080, China
| | - Q C Yang
- Department of Pathology, Tianjin Haihe Hospital, Tianjin 300350, China
| | - Y N Gao
- Department of Pathology, Changchun Infectious Diseases/Tuberculosis Hospital, Changchun 132000, China
| | - W S Chen
- Department of Pathology, Quanzhou First Hospital, Fujian Medical University, Quanzhou 362000, Fujian Province,China
| | - S H Wang
- Thorough Images Co. LTD, Beijing 100083, China
| | - W Xu
- Tsinghua University Institute for Interdisciplinary Information Sciences, Beijing 100084, China
| | - M L Jin
- Department of Pathology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
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11
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Zhang ML, Chen WS, Han B. [Evaluation of the efficacy of cyclosporin A combined with recombined human thrombopoietin for treating patients with non-severe aplastic anemia]. Zhonghua Xue Ye Xue Za Zhi 2020; 41:637-642. [PMID: 32942816 PMCID: PMC7525171 DOI: 10.3760/cma.j.issn.0253-2727.2020.08.004] [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] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objectives: To compare the efficacy of cyclosporin A (CsA) alone and CsA combined with recombined human thrombopoietin (rhTPO) in patients with non-severe aplastic anemia (NSAA) . Methods: Data from 83 patients with NSAA between August 2014 and February 2019 were collected retrospectively. The study population included 35 men and 48 women, with a median age of 45 years (14-85 years) . Among them, 57 had been treated with CsA + rhTPO, TPO was administered at 15 000 U QD for 7 days, once a month for 3 months, and the other 26 patients with compatible baseline characters were treated with CsA alone. All the enrolled patients had been treated with CsA for at least 6 months and were followed up for at least 1 year. The efficacy and outcome were compared between the two groups. Results: Total 23 men and 34 women, with a median age of 46 years (14-85 years) were treated with CsA + rhTPO. The median duration of CsA treatment was 17 (8-28) months, and the patients were followed up for a median of 27 (12-45) months. Total 12 men and 14 women, with a median age of 40 years (20-64) were treated with CsA alone. The median duration of CsA treatment was 19 months (9-30 months) , and the median follow-up duration was 29 months (16-66 months) . There was no significant difference in the baseline characteristics of the two groups (P>0.05) . There was no significant difference in the CR and OR rates of the two groups at 1, 3, 6, 12, and 24 months of treatment (P>0.05) . The change in the platelet level for the CsA + rhTPO treated group after 1 month[8 (-12-86) ×10(9)/L vs. 3 (16-57) ×10(9)/L, P=0.029) , 3 months[24 (-6-102) ×10(9)/L vs. 7 (-9-76) ×10(9)/L, P=0.006], and 6 months[33.5 (-4-123) ×10(9)/L vs. 12.5 (-14-109) ×10(9)/L, P=0.048] of treatment was higher than that in the CsA alone group, while no significant difference was found between the two groups at other time points. There was no significant difference in the change in the megakaryocyte level between the two groups[3 (0-4) vs. 2 (0-5) , z=-0.868, P=0.385] after 6 months of treatment. Apart from 10.5% (6/57) of the patients in the CsA + rhTPO treated group who reported soreness at the injection site, there was no other significant difference between the two groups in terms of adverse effects. During the follow-up period, there were two cases of increasing paroxysmal nocturnal hemoglobinuria clone to over 10%, one in the CsA + rhTPO treated group, the other in the CsA alone group; and there was one case of progression to SAA in the CsA + rhTPO treated group; while no case of death or thromboembolic event (TEE) , fibrosis or reticulin proliferation, progression to myelodysplastic syndrome (MDS) , or acute myeloid leukemia was observed in either group. There was one case of progression to SAA in the CsA + rhTPO treated group but none in the CsA alone group. Conclusion: Compared to CsA alone, CsA + rhTPO treatment can accelerate the recovery of the platelet level with acceptable adverse effects.
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Affiliation(s)
- M L Zhang
- Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medicine Sciences, Beijing 100730, China
| | - W S Chen
- Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medicine Sciences, Beijing 100730, China
| | - B Han
- Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medicine Sciences, Beijing 100730, China
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12
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Liu J, Zang YS, Jiao XD, Chen WS. [Research advances in tumor mutation burden for the prediction of systemic therapeutic efficacy on non-small cell lung cancer]. Zhonghua Nei Ke Za Zhi 2020; 59:828-832. [PMID: 32987491 DOI: 10.3760/cma.j.cn112138-20191202-00791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- J Liu
- Graduate School of the Second Military Medical University, Shanghai 200433, China; Department of Medical Oncology, Changzheng Hospital, The Second Military Medical University, Shanghai 200070, China
| | - Y S Zang
- Department of Medical Oncology, Changzheng Hospital, The Second Military Medical University, Shanghai 200070, China
| | - X D Jiao
- Department of Medical Oncology, Changzheng Hospital, The Second Military Medical University, Shanghai 200070, China
| | - W S Chen
- Department of Pharmacy, Changzheng Hospital, The Second Military Medical University, Shanghai 200041, China
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13
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Chen WS, Huang YS, Xu LB, Shi MM, Chen XD, Ye GQ, Wu TT, Zhu GB. Effects of sarcopenia, hypoalbuminemia, and laparoscopic surgery on postoperative complications in elderly patients with colorectal cancer: A prospective study. Neoplasma 2020; 67:922-932. [PMID: 32386484 DOI: 10.4149/neo_2020_190908n882] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Accepted: 11/26/2019] [Indexed: 11/08/2022]
Abstract
With the increasing number of elderly patients, the risk of diseases such as colorectal cancer (CRC) has increased. The objective of this prospective study was to explore the effects of sarcopenia, hypoalbuminemia, and laparoscopic surgery on postoperative complications among elderly patients who recently underwent colorectal surgery. Patients aged over 65 years who underwent surgery for CRC at the First Affiliated Hospital of Wenzhou Medical University were considered for this study. The demographical and clinical characteristics of these patients, as well as postoperative complications, were prospectively analyzed. The patients were divided into two groups depending on the diagnosis of sarcopenia, and the clinical variables corresponding to the two groups were compared. Further, the risk factors associated with postoperative complications were evaluated using univariate analysis and multivariate logistic regression analysis. A total of 360 patients fulfilled the inclusion criteria. Incidences of postoperative complications in the sarcopenia and non-sarcopenia groups were at 38.3% and 27.3%, respectively. In addition, sarcopenia (p=0.029) and hypoalbuminemia (p=0.010) were identified as independent risk factors, while laparoscopic surgery (p=0.023) was identified as a protective factor for postoperative complications. However, laparoscopic surgery was a protective factor for postoperative complications in the colon group only (p=0.001). Sarcopenia and hypoalbuminemia are independent risk factors that influence the probability of developing complications following CRC surgery. Laparoscopic surgery is a protective factor for postoperative complications of CRC patients, particularly colon cancer patients.
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Affiliation(s)
- W S Chen
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - Y S Huang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - L B Xu
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - M M Shi
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - X D Chen
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - G Q Ye
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - T T Wu
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Huzhou University, Huzhou, China
| | - G B Zhu
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
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Chen WS, Shih YC. Mineralization of aniline in aqueous solution by sono-activated peroxydisulfate enhanced with PbO semiconductor. Chemosphere 2020; 239:124686. [PMID: 31494321 DOI: 10.1016/j.chemosphere.2019.124686] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 08/24/2019] [Accepted: 08/26/2019] [Indexed: 06/10/2023]
Abstract
Oxidative degradation of aniline in aqueous solution was performed by the sono-activated peroxydisulfate coupled with PbO process, wherein a dramatic synergistic effect was found. Experiments were carried out in the batch-wise mode to investigate the influence of various operation parameters on the sonocatalytic behavior, such as ultrasonic power intensity, peroxydisulfate anion concentrations and PbO dosages. According to the scavenging effect of ethanol, methanol and tert-butyl alcohol, the principal oxidizing agents were presumed to be sulfate radicals descended from peroxydisulfate anions, activated via ultrasound or sonocatalysis of PbO. Based on the results attained from gas chromatograph-mass spectrometer, it was hypothesized that aniline was initially oxidized into iminobenzene radicals, followed with formation of nitrosobenzene, p-benzoquinonimine and nitrobenzene respectively. Condensation of nitrosobenzene with aniline generated azobenzene. Phenol was detected as one of degradation intermediates, which was sequentially converted into hydroquinone and p-benzoquinone.
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Affiliation(s)
- Wen-Shing Chen
- Department of Chemical and Materials Engineering, National Yunlin University of Science & Technology, 123 University Road, Section 3, Douliou, Yunlin, 640, Taiwan.
| | - Yu-Cheng Shih
- Department of Chemical and Materials Engineering, National Yunlin University of Science & Technology, 123 University Road, Section 3, Douliou, Yunlin, 640, Taiwan
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Chen WS, Tan JH, Mohamad Y, Imran R. External validation of a modified trauma and injury severity score model in major trauma injury. Injury 2019; 50:1118-1124. [PMID: 30591225 DOI: 10.1016/j.injury.2018.12.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 12/08/2018] [Accepted: 12/21/2018] [Indexed: 02/02/2023]
Abstract
BACKGROUND The establishment of an accurate prognostic model in major trauma patients is important mainly because this group of patients will benefit the most. Clinical prediction models must be validated internally and externally on a regular basis to ensure the prediction is accurate and current. This study aims to externally validate two prediction models, the Trauma and Injury Severity Score model developed using the Major Trauma Outcome Study in North America (MTOS-TRISS model), and the NTrD-TRISS model, which is a refined MTOS-TRISS model with coefficients derived from the Malaysian National Trauma Database (NTrD), by regarding mortality as the outcome measurement. METHOD This retrospective study included patients with major trauma injuries reported to a trauma centre of Hospital Sultanah Aminah over a 6-year period from 2011 and 2017. Model validation was examined using the measures of discrimination and calibration. Discrimination was assessed using the area under the receiver operating characteristic curve (AUC) and 95% confidence interval (CI). The Hosmer-Lemeshow (H-L) goodness-of-fit test was used to examine calibration capabilities. The predictive validity of both MTOS-TRISS and NTrD-TRISS models were further evaluated by incorporating parameters such as the New Injury Severity Scale and the Injury Severity Score. RESULTS Total patients of 3788 (3434 blunt and 354 penetrating injuries) with average age of 37 years (standard deviation of 16 years) were included in this study. All MTOS-TRISS and NTrD-TRISS models examined in this study showed adequate discriminative ability with AUCs ranged from 0.86 to 0.89 for patients with blunt trauma mechanism and 0.89 to 0.99 for patients with penetrating trauma mechanism. The H-L goodness-of-fit test indicated the NTrD-TRISS model calibrated as good as the MTOS-TRISS model for patients with blunt trauma mechanism. CONCLUSION For patients with blunt trauma mechanism, both the MTOS-TRISS and NTrD-TRISS models showed good discrimination and calibration performances. Discrimination performance for the NTrD-TRISS model was revealed to be as good as the MTOS-TRISS model specifically for patients with penetrating trauma mechanism. Overall, this validation study has ascertained the discrimination and calibration performances of the NTrD-TRISS model to be as good as the MTOS-TRISS model particularly for patients with blunt trauma mechanism.
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Affiliation(s)
- W S Chen
- Department of Statistics, Data Science and Epidemiology, Swinburne University of Technology, Melbourne, Australia.
| | - J H Tan
- General Surgery Department, Hospital Sultanah Aminah, Johor Bahru, Malaysia.
| | - Y Mohamad
- General Surgery Department, Hospital Sultanah Aminah, Johor Bahru, Malaysia.
| | - R Imran
- General Surgery Department, Hospital Sultanah Aminah, Johor Bahru, Malaysia.
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16
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Chen WS, Huang CP. Mineralization of dinitrotoluenes in aqueous solution by sono-activated persulfate enhanced with electrolytes. Ultrason Sonochem 2019; 51:129-137. [PMID: 30401622 DOI: 10.1016/j.ultsonch.2018.10.035] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 10/23/2018] [Accepted: 10/25/2018] [Indexed: 06/08/2023]
Abstract
Oxidative degradation of dinitrotoluenes (DNTs) in industrial wastewater was conducted by sono-activated persulfate process assisted with electrolytes. Experiments were carried out to elucidate the influence of various operating parameters on the sonolytic behavior, such as species and concentrations of electrolytes, ultrasonic power intensity, reaction temperature, dosage of oxygen and persulfate anions. The outcomes indicate that sulfate radicals serve as main oxidants in the sono-activated persulfate process, wherein MgSO4 electrolyte obviously inhibits microbubble coalescence, leading to enhancement of cavitation strength and DNTs removal percentage. On addition of electrolytes, the increment of DNTs removal percentages was proportional to ionic strength of electrolytes. According to the results obtained from gas chromatograph-mass spectrometer (GC-MS), it is postulated that DNTs initially undergo denitration pathway with cleavage of nitro group into o-mononitrotoluene (MNT) or oxidation of methyl group followed with decarboxylation procedure into 1,3-dinitrobenzene (DNB), respectively. Due to electrolytes observed commonly in wastewater, the sono-activated persulfate process coupled with electrolytes is potentially applied to dispose wastewater effluent from toluene nitration processes.
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Affiliation(s)
- Wen-Shing Chen
- Department of Chemical and Materials Engineering, National Yunlin University of Science & Technology, Yunlin 640, Taiwan, ROC.
| | - Chi-Pin Huang
- Department of Chemical and Materials Engineering, National Yunlin University of Science & Technology, Yunlin 640, Taiwan, ROC
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17
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Abstract
Myopia has emerged as one of the major health issues in China given its increasingly high prevalence. It is generally accepted that myopia is the result of a complex interaction of environmental exposures and genetic predisposition. Many studies have indicated that abnormal visual stimulation regulates retinal neurotransmitters and growth factors to release resulting in scleral remodeling and axial elongation through signaling pathway transduction. It has been reported that the signaling pathways play important roles in the elongation of axial length and development of myopia. In this study, we reviewed several important signaling pathways implicated myopia.(Chin J Ophthalmol, 2019, 55:148-152).
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Affiliation(s)
- Z Liu
- Eye Institute of Xiamen University, Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Xiamen 361102, China
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18
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Huang YF, Chang YS, Chen WS, Tsao YP, Wang WH, Liao HT, Tsai CY, Lai CC. Incidence and risk factors of osteomyelitis in adult and pediatric systemic lupus erythematosus: a nationwide, population-based cohort study. Lupus 2018; 28:19-26. [PMID: 30458691 DOI: 10.1177/0961203318811601] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE The objective of this paper is to investigate the incidence rate, risk factors and outcome of osteomyelitis among patients with systemic lupus erythematosus (SLE). MATERIALS AND METHODS We conducted a cohort study using data for patients enrolled in the Taiwan National Health Insurance Database from 2000 to 2012. Patients with SLE and age- and sex-matched controls without SLE were enrolled. Primary endpoint was the first occurrence of osteomyelitis. Risks of osteomyelitis in SLE patients were analyzed with Cox proportional hazards regression models, including age, sex, comorbidities and medications. RESULTS Among 24,705 SLE patients (88.4% women, mean age 35.8 years) with a median follow-up of 9.1 years, 386 patients had osteomyelitis. The incidence rate ratio (IRR) of osteomyelitis in the SLE group vs the control group was 8.52 (95% confidence interval (CI) 7.24-10.05). The SLE group had higher incidence rates of osteomyelitis than the control group, especially in pediatric subgroups (IRR 41.1 95% CI 18.57-107.35). Compared to controls, SLE patients experienced osteomyelitis at a younger age (42.3 vs 58.1 years) but did not have an increased risk of mortality (hazard ratio 0.7; 95% CI 0.21-2.38). Age >60 years, male gender, malignancy within five years, prior bone fracture and higher daily prednisolone dose (>7.5 mg) cumulatively for >180 days increased risk for osteomyelitis. CONCLUSIONS SLE patients have a higher IRR of osteomyelitis than controls. Pediatric and elder SLE patients, patients with a history of bone fracture, malignancy within five years and higher-dose glucocorticoid use have a higher risk of osteomyelitis and should be carefully monitored.
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Affiliation(s)
- Y F Huang
- 1 Division of Allergy, Immunology, and Rheumatology, Department of Internal Medicine, Taitung Mackay Memorial Hospital, Taitung, Taiwan.,2 Faculty of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Y S Chang
- 3 Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,4 Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan
| | - W S Chen
- 2 Faculty of Medicine, National Yang-Ming University, Taipei, Taiwan.,5 Division of Allergy, Immunology, and Rheumatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Y P Tsao
- 2 Faculty of Medicine, National Yang-Ming University, Taipei, Taiwan.,5 Division of Allergy, Immunology, and Rheumatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - W H Wang
- 6 Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, Mackay Memorial Hospital, Taipei, Taiwan, and Department of Medicine, Mackay Medical College, New Taipei City, Taiwan.,7 Mackay Junior College of Medicine, Nursing, and Management, Taipei, Taiwan
| | - H T Liao
- 2 Faculty of Medicine, National Yang-Ming University, Taipei, Taiwan.,3 Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,5 Division of Allergy, Immunology, and Rheumatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - C Y Tsai
- 2 Faculty of Medicine, National Yang-Ming University, Taipei, Taiwan.,5 Division of Allergy, Immunology, and Rheumatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - C C Lai
- 2 Faculty of Medicine, National Yang-Ming University, Taipei, Taiwan.,5 Division of Allergy, Immunology, and Rheumatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,8 Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan
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Hung ML, Liao HT, Chen WS, Chen MH, Lai CC, Tsai CY, Chang DM. Invasive aspergillosis in patients with systemic lupus erythematosus: a retrospective study on clinical characteristics and risk factors for mortality. Lupus 2018; 27:1944-1952. [DOI: 10.1177/0961203318796294] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Objective The objective of this paper is to analyze the clinical features, outcomes, mortality risk factors, and all-cause mortalities of invasive aspergillosis (IA) in patients with systemic lupus erythematosus (SLE). Methods Medical records were reviewed to identify SLE patients with IA from January 2006 to June 2017, at Taipei Veterans General Hospital, Taiwan. A total of 6714 SLE patients were included. Clinical/laboratory parameters and treatment outcomes were analyzed. Results Four patients (19.0%) had definite and 17 had probable (81.0%) IA. Seven patients (33.3%) survived and 14 died (66.7%). Concurrently, there were 19 pneumonias (90.5%), 17 cases of other infections (81.0%), eight bacteremia (38.1%), nine cytomegalovirus (CMV, 42.7%) and six Candida (28.6%) infections. In all 55 blood cultures, 38 (69.1%) yielded gram-negative bacilli, of which carbapenem-resistant A. baumannii accounted for eight (21.1%); 17 (30.9%) yielded gram-positive cocci, of which methicillin-resistant S. aureus accounted for six (35.3%); and vancomycin-resistant Enterococcus accounted for four (23.5%). Daily steroid dose ≥ 20 mg (hazard ratio (HR) 2.00), recent pulse steroid therapy (HR 2.80), azathioprine (HR 2.00), rituximab (HR 2.00), plasmapheresis (HR 2.00), acute respiratory distress syndrome (HR 2.00), concurrent infections (HR 5.667) and CMV viremia (HR 1.75) were higher in the fatality group. All p values were less than 0.05. Septic shock ( n = 7, 50% in the fatality group) is the most common cause of mortality. Conclusions High daily steroid dosing, recent pulse steroid therapy, azathioprine, rituximab, concurrent infections, and CMV viremia were mortality risk factors for IA in SLE.
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Affiliation(s)
- ML Hung
- Division of Allergy, Immunology & Rheumatology, Taipei Veterans General Hospital & National Yang-Ming University Faculty of Medicine, Taiwan
| | - HT Liao
- Division of Allergy, Immunology & Rheumatology, Taipei Veterans General Hospital & National Yang-Ming University Faculty of Medicine, Taiwan
| | - WS Chen
- Division of Allergy, Immunology & Rheumatology, Taipei Veterans General Hospital & National Yang-Ming University Faculty of Medicine, Taiwan
| | - MH Chen
- Division of Allergy, Immunology & Rheumatology, Taipei Veterans General Hospital & National Yang-Ming University Faculty of Medicine, Taiwan
| | - CC Lai
- Division of Allergy, Immunology & Rheumatology, Taipei Veterans General Hospital & National Yang-Ming University Faculty of Medicine, Taiwan
| | - CY Tsai
- Division of Allergy, Immunology & Rheumatology, Taipei Veterans General Hospital & National Yang-Ming University Faculty of Medicine, Taiwan
| | - DM Chang
- Division of Allergy, Immunology & Rheumatology, Taipei Veterans General Hospital & National Yang-Ming University Faculty of Medicine, Taiwan
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20
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Chen WS, Jiang QW, Chen Q. [Spatial-temporal analysis of enterovirus infection in Macao Special Administrative Region, China, 2011-2016]. Zhonghua Liu Xing Bing Xue Za Zhi 2018; 39:661-663. [PMID: 29860813 DOI: 10.3760/cma.j.issn.0254-6450.2018.05.023] [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] [Indexed: 06/08/2023]
Abstract
Objective: To understand the spatial-temporal distribution of enterovirus infection in Macao Special Administrative Region, China, from 2011 to 2016. Methods: The incidence data of enterovirus infections in child care settings and primary schools in Macao during this period, which were confirmed by the Health Bureau, were used for the spatial-temporal analysis. Bernoulli model was used as probability model. Software SPSS 20.0 was used for descriptive statistics of the study cases, and software SaTScan 9.4.4 was used for spatial and temporal scanning. Finally, software Google Earth was used for visualization of geographical information. Results: A total of 330 enterovirus infection events were reported in Macao from 2011 to 2016. The infection event number was highest in 2014 (101, 30.6%), the infections mainly occurred during May to June. A case clustering area with a radius of 0.7 km (high rates) was observed in northeast of Macao from 2011 to 2013 (log likelihood rate=13.4, P<0.001, RR=1.4). Conclusion: The annual prevention of enterovirus infection and related health education should be started in February and March in Macao, and the key area is the northeast of Macao island.
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Affiliation(s)
- W S Chen
- Department of Epidemiology, School of Public Health, Southern Medical University, Guangzhou 510515, China
| | - Q W Jiang
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai 200032, China
| | - Q Chen
- Department of Epidemiology, School of Public Health, Southern Medical University, Guangzhou 510515, China
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21
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Gopalakrishnan V, Spencer CN, Nezi L, Reuben A, Andrews MC, Karpinets TV, Prieto PA, Vicente D, Hoffman K, Wei SC, Cogdill AP, Zhao L, Hudgens CW, Hutchinson DS, Manzo T, Petaccia de Macedo M, Cotechini T, Kumar T, Chen WS, Reddy SM, Szczepaniak Sloane R, Galloway-Pena J, Jiang H, Chen PL, Shpall EJ, Rezvani K, Alousi AM, Chemaly RF, Shelburne S, Vence LM, Okhuysen PC, Jensen VB, Swennes AG, McAllister F, Marcelo Riquelme Sanchez E, Zhang Y, Le Chatelier E, Zitvogel L, Pons N, Austin-Breneman JL, Haydu LE, Burton EM, Gardner JM, Sirmans E, Hu J, Lazar AJ, Tsujikawa T, Diab A, Tawbi H, Glitza IC, Hwu WJ, Patel SP, Woodman SE, Amaria RN, Davies MA, Gershenwald JE, Hwu P, Lee JE, Zhang J, Coussens LM, Cooper ZA, Futreal PA, Daniel CR, Ajami NJ, Petrosino JF, Tetzlaff MT, Sharma P, Allison JP, Jenq RR, Wargo JA. Gut microbiome modulates response to anti-PD-1 immunotherapy in melanoma patients. Science 2018; 359:97-103. [PMID: 29097493 PMCID: PMC5827966 DOI: 10.1126/science.aan4236] [Citation(s) in RCA: 2689] [Impact Index Per Article: 448.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 10/17/2017] [Indexed: 12/11/2022]
Abstract
Preclinical mouse models suggest that the gut microbiome modulates tumor response to checkpoint blockade immunotherapy; however, this has not been well-characterized in human cancer patients. Here we examined the oral and gut microbiome of melanoma patients undergoing anti-programmed cell death 1 protein (PD-1) immunotherapy (n = 112). Significant differences were observed in the diversity and composition of the patient gut microbiome of responders versus nonresponders. Analysis of patient fecal microbiome samples (n = 43, 30 responders, 13 nonresponders) showed significantly higher alpha diversity (P < 0.01) and relative abundance of bacteria of the Ruminococcaceae family (P < 0.01) in responding patients. Metagenomic studies revealed functional differences in gut bacteria in responders, including enrichment of anabolic pathways. Immune profiling suggested enhanced systemic and antitumor immunity in responding patients with a favorable gut microbiome as well as in germ-free mice receiving fecal transplants from responding patients. Together, these data have important implications for the treatment of melanoma patients with immune checkpoint inhibitors.
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Affiliation(s)
- V Gopalakrishnan
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Department of Epidemiology, Human Genetics and Environmental Sciences, University of Texas School of Public Health, Houston, TX 77030, USA
| | - C N Spencer
- Department of Epidemiology, Human Genetics and Environmental Sciences, University of Texas School of Public Health, Houston, TX 77030, USA
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - L Nezi
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - A Reuben
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - M C Andrews
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - T V Karpinets
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - P A Prieto
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - D Vicente
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - K Hoffman
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - S C Wei
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - A P Cogdill
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - L Zhao
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - C W Hudgens
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - D S Hutchinson
- Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, TX 77030, USA
| | - T Manzo
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - M Petaccia de Macedo
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - T Cotechini
- Department of Cell, Developmental and Cell Biology, Oregon Health and Sciences University, Portland, OR 97239, USA
| | - T Kumar
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - W S Chen
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - S M Reddy
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - R Szczepaniak Sloane
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - J Galloway-Pena
- Department of Infectious Diseases, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - H Jiang
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - P L Chen
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - E J Shpall
- Department of Stem Cell Transplantation, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - K Rezvani
- Department of Stem Cell Transplantation, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - A M Alousi
- Department of Stem Cell Transplantation, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - R F Chemaly
- Department of Infectious Diseases, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - S Shelburne
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Department of Infectious Diseases, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - L M Vence
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - P C Okhuysen
- Department of Infectious Diseases, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - V B Jensen
- Department of Veterinary Medicine and Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - A G Swennes
- Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, TX 77030, USA
| | - F McAllister
- Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - E Marcelo Riquelme Sanchez
- Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Y Zhang
- Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - E Le Chatelier
- Centre de Recherche de Jouy-en-Josas, Institut National de la Recherche Agronomique, 78352 Jouy-en-Josas, France
| | - L Zitvogel
- Centre d'Investigation Clinique Biothérapie, Institut Gustave-Roussy, 94805 Villejuif Cedex, France
| | - N Pons
- Centre de Recherche de Jouy-en-Josas, Institut National de la Recherche Agronomique, 78352 Jouy-en-Josas, France
| | - J L Austin-Breneman
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - L E Haydu
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - E M Burton
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - J M Gardner
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - E Sirmans
- Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - J Hu
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - A J Lazar
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - T Tsujikawa
- Department of Cell, Developmental and Cell Biology, Oregon Health and Sciences University, Portland, OR 97239, USA
| | - A Diab
- Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - H Tawbi
- Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - I C Glitza
- Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - W J Hwu
- Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - S P Patel
- Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - S E Woodman
- Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - R N Amaria
- Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - M A Davies
- Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - J E Gershenwald
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - P Hwu
- Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - J E Lee
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - J Zhang
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - L M Coussens
- Department of Cell, Developmental and Cell Biology, Oregon Health and Sciences University, Portland, OR 97239, USA
| | - Z A Cooper
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - P A Futreal
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - C R Daniel
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Department of Epidemiology, Human Genetics and Environmental Sciences, University of Texas School of Public Health, Houston, TX 77030, USA
| | - N J Ajami
- Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, TX 77030, USA
| | - J F Petrosino
- Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, TX 77030, USA
| | - M T Tetzlaff
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - P Sharma
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - J P Allison
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - R R Jenq
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - J A Wargo
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
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Chou CT, Liao HT, Chen CH, Chen WS, Wang HP, Su KY. The Clinical Application of Anti-CCP in Rheumatoid Arthritis and Other Rheumatic Diseases. Biomark Insights 2017. [DOI: 10.1177/117727190700200007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Rheumatoid arthritis (RA) is a common rheumatic disease in Caucasians and in other ethnic groups. Diagnosis is mainly based on clinical features. Before 1998, the only serological laboratory test that could contribute to the diagnosis was that for rheumatoid factor (RF). The disease activity markers for the evaluation of clinical symptoms or treatment outcome were the erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP). As a matter of fact, the diagnosis of early RA is quite impossible, as the clinical criteria are insufficient at the beginning stage of the disease. In 1998, Schelleken reported that a high percentage of RA patients had a specific antibody that could interact with a synthetic peptide which contained the amino acid citrulline. The high specificity (98%) for RA of this new serological marker, anti-cyclic citrullinated antibody (anti-CCP antibody), can be detected early in RA, before the typical clinical features appear. The presence or absence of this antibody can easily distinguish other rheumatic diseases from RA. Additionally, the titer of anti-CCP can be used to predict the prognosis and treatment outcome after DMARDs or biological therapy. Therefore, with improvement of sensitivity, the anti-CCP antibody will be widely used as a routine laboratory test in the clinical practice for RA.
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Affiliation(s)
- CT Chou
- Division of Allergy-Immunology-Rheumatology, Veterans General Hospital
| | - HT Liao
- Division of Allergy-Immunology-Rheumatology, Wan Fang Hospital, Taipei, Taiwan
| | - CH Chen
- Division of Allergy-Immunology-Rheumatology, Wan Fang Hospital, Taipei, Taiwan
| | - WS Chen
- Division of Allergy-Immunology-Rheumatology, Veterans General Hospital
| | - HP Wang
- Division of Allergy-Immunology-Rheumatology, Veterans General Hospital
| | - KY Su
- Division of Allergy-Immunology-Rheumatology, Veterans General Hospital
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23
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Chang YS, Chang CC, Chen YH, Chen WS, Chen JH. Risk of infective endocarditis in patients with systemic lupus erythematosus in Taiwan: a nationwide population-based study. Lupus 2017; 26:1149-1156. [PMID: 28420053 DOI: 10.1177/0961203317694260] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Objectives Patients with systemic lupus erythematosus are considered vulnerable to infective endocarditis and prophylactic antibiotics are recommended before an invasive dental procedure. However, the evidence is insufficient. This nationwide population-based study evaluated the risk and related factors of infective endocarditis in systemic lupus erythematosus. Methods We identified 12,102 systemic lupus erythematosus patients from the National Health Insurance research-oriented database, and compared the incidence rate of infective endocarditis with that among 48,408 non-systemic lupus erythematosus controls. A Cox multivariable proportional hazards model was employed to evaluate the risk of infective endocarditis in the systemic lupus erythematosus cohort. Results After a mean follow-up of more than six years, the systemic lupus erythematosus cohort had a significantly higher incidence rate of infective endocarditis (42.58 vs 4.32 per 100,000 person-years, incidence rate ratio = 9.86, p < 0.001) than that of the control cohort. By contrast, the older systemic lupus erythematosus cohort had lower risk (adjusted hazard ratio 11.64) than that of the younger-than-60-years systemic lupus erythematosus cohort (adjusted hazard ratio 15.82). Cox multivariate proportional hazards analysis revealed heart disease (hazard ratio = 5.71, p < 0.001), chronic kidney disease (hazard ratio = 2.98, p = 0.034), receiving a dental procedure within 30 days (hazard ratio = 36.80, p < 0.001), and intravenous steroid therapy within 30 days (hazard ratio = 39.59, p < 0.001) were independent risk factors for infective endocarditis in systemic lupus erythematosus patients. Conclusions A higher risk of infective endocarditis was observed in systemic lupus erythematosus patients. Risk factors for infective endocarditis in the systemic lupus erythematosus cohort included heart disease, chronic kidney disease, steroid pulse therapy within 30 days, and a recent invasive dental procedure within 30 days.
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Affiliation(s)
- Y S Chang
- 1 Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,2 Division of Allergy, Immunology, and Rheumatology, Shuang Ho Hospital, Taipei Medical University, Taiwan
| | - C C Chang
- 1 Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,3 Division of Rheumatology, Immunology and Allergy, Department of Internal Medicine, Taipei Medical University Hospital, Taipei, Taiwan
| | - Y H Chen
- 4 Biostatistics Center, College of Management, Taipei Medical University, Taiwan
| | - W S Chen
- 5 Division of Rheumatology, Immunology, and Allergy, Taipei Veterans General Hospital, Taiwan
| | - J H Chen
- 6 Biostatistics Center and Graduate Institute of Data Science, College of Management, Taipei Medical University, Taiwan
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24
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Abstract
Corneal epithelium, the outermost layer of eyeball, is the main route for foreign materials to enter the eye. Under physiological conditions, the corneal epithelial superficial cells form a functionally selective permeability barrier. Integral corneal epithelial barrier function not only ensures the enrolling of nutrients which is required for regular metabolism, but also prevents foreign bodies, or disease-causing microorganism invasion. Recently, a large number of clinical and experimental studies have shown that abnormal corneal epithelial barrier function is the pathological basis for many ocular diseases. In addition, some study found that corneal epithelial barrier constitutes a variety of proteins involved in cell proliferation, differentiation, apoptosis, and a series of physiological and pathological processes. This paper reviewed recent studies specifically on the corneal epithelial barrier, highlights of its structure, function and influence factors. (Chin J Ophthalmol, 2016, 52: 631-635).
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Affiliation(s)
- F F Liu
- Ophthalmological Research Institute, Xiamen University, Fujian Ophthalmology & Visual Sciences Key Lab., Xiamen 361000, China
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25
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Chen WS, Liu J, Liu H, Song YY, Chen HY, Wang R, Zhang YP, Jiang W, Li HF, Li SQ, Zhang SM, Liu B, Zhang X, Zhang WH. [Prospective evaluation on ventilator-associated events: a cohort study from eight intensive care units]. Zhonghua Liu Xing Bing Xue Za Zhi 2017; 37:1148-51. [PMID: 27539350 DOI: 10.3760/cma.j.issn.0254-6450.2016.08.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE The aim of this study was to prospectively investigate the incidence of ventilator associated events (VAEs) in intensive care units (ICUs) among adult patients, and to evaluate the correlation between VAEs and ventilator associated pneumonia (VAP). METHODS A prospective 3-month cohort study (January 2015 to March 2015) was carried out. VAEs were divided into three groups: with ventilator-associated condition (VAC), with infection related ventilator-associated complication (IVAC) and with possible VAP (PVAP). Sensitivity and specificity of VAEs were evaluated and compared to the traditional VAP. Kappa test was applied to judge the consistency of VAC and VAP. RESULTS During Jan. 2015 and Mar. 2015, 1 014 patients were admitted to 8 ICUs, with 7 977 patients per day. In total, 197 patients used the mechanical ventilation installation, with, a total number of 3 152 ventilator-days. Finally, 1 214 ventilation days in the VAC group and 1 938 ventilation days in the non-VAC group) that were available for final analysis. 46 VAC cases were identified including 22 classified as IVAC (14.59 and 6.98 per 1 000 ventilation days, respectively). Length of ICU stay and duration on mechanical ventilation for VAC patients were both significantly longer than those for non-VAC patients (P<0.05). Sensitivity and specificity of the VAC criteria for the detection of VAP were 36.92% and 83.33%, respectively. CONCLUSION The VAEs surveillance paradigms could be applied to monitor patients on the use of mechanical ventilation installation. However, sensitivity and specificity of VAC were under pool for the diagnosis of VAP. However, automatically surveillance programs was relied on the improvement of auto-information systems.
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Affiliation(s)
- W S Chen
- The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
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Meng FG, Zhang ZQ, Huang GX, Chen WS, Zhang ZJ, He AS, Liao WM, Liao WM. Chondrogenesis of mesenchymal stem cells in a novel hyaluronate-collagen-tricalcium phosphate scaffolds for knee repair. Eur Cell Mater 2016; 31:79-94. [PMID: 26728500 DOI: 10.22203/ecm.v031a06] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Scaffolds are expected to play a key role in the induction of chondrogenesis of mesenchymal stem cells (MSCs) for cartilage tissue regeneration. Here, we report the development of a novel tricalcium phosphate-collagen-hyaluronate (TCP-COL-HA) scaffold that can function as a stem cell carrier to induce chondrogenesis and promote cartilage repair, and the investigation of chondroinductive properties of scaffolds containing varying amounts of TCP, COL and HA. TCP-COL-HA scaffolds, as well as TCP-COL scaffolds at two different TCP/COL ratios (50:50 and 25:75), were evaluated for their ability to induce cartilage regeneration from rabbit mesenchymal stem cells (rMSCs) in vitro and in vivo. Chondrogenic differentiation was evaluated by sulphated glycosaminoglycan quantification, collagen type II immunohistochemistry, and qRT-PCR. Mechanical strength was evaluated by the compression test. The results showed that the TCP-COL-HA scaffolds enhanced rMSC chondrogenesis to a greater degree than did the TCP-COL scaffolds; for the latter, the scaffold with the lower TCP/COL ratio (25:75) was superior in terms of promoting rMSC chondrogenesis. Similar results were obtained in an ectopic implantation model in nude mice. In a critical-size rabbit osteochondral defect-repair model, rMSCs seeded on TCP-COL-HA scaffolds showed greater cartilage regeneration and integration into surrounding tissue than the TCP-COL groups, in which cartilage repair was more efficient at the 25:75 than at the 50:50 ratio. These results indicate that the addition of HA and different TCP/COL ratios can affect the chondroinductive capacity of scaffolds, and suggest that the TCP-COL-HA scaffold can serve as an effective cell carrier for cartilage regeneration.
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Affiliation(s)
- F G Meng
- Department of Orthopaedic Surgery, First Affiliated Hospital of Sun Yat-sen University, #58 Zhongshan 2nd Road, Guangzhou 510080,
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Huang CW, Sun MK, Chen BT, Shieh J, Chen CS, Chen WS. Simulation of thermal ablation by high-intensity focused ultrasound with temperature-dependent properties. Ultrason Sonochem 2015; 27:456-465. [PMID: 26186867 DOI: 10.1016/j.ultsonch.2015.06.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 06/08/2015] [Accepted: 06/08/2015] [Indexed: 06/04/2023]
Abstract
An integrated computational framework was developed in this study for modeling high-intensity focused ultrasound (HIFU) thermal ablation. The temperature field was obtained by solving the bioheat transfer equation (BHTE) through the finite element method; while, the thermal lesion was considered as a denatured material experiencing phase transformation and modeled with the latent heat. An equivalent attenuation coefficient, which considers the temperature-dependent properties of the target material and the ultrasound diffraction due to bubbles, was proposed in the nonlinear thermal transient analysis. Finally, a modified thermal dose formulation was proposed to predict the lesion size, shape and location. In-vitro thermal ablation experiments on transparent tissue phantoms at different energy levels were carried out to validate this computational framework. The temperature histories and lesion areas from the proposed model show good correlation with those from the in-vitro experiments.
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Affiliation(s)
- C W Huang
- Department of Civil Engineering, Chung Yuan Christian University, Taoyuan, Taiwan.
| | - M K Sun
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital & College of Medicine, Taipei, Taiwan; Division of Medical Engineering Research, National Health Research Institutes, Miaoli, Taiwan
| | - B T Chen
- Department of Civil Engineering, Chung Yuan Christian University, Taoyuan, Taiwan
| | - J Shieh
- Department of Materials Science and Engineering, National Taiwan University, Taipei, Taiwan
| | - C S Chen
- Department of Civil Engineering, National Taiwan University, Taipei, Taiwan
| | - W S Chen
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital & College of Medicine, Taipei, Taiwan; Division of Medical Engineering Research, National Health Research Institutes, Miaoli, Taiwan.
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Chen WS, Zhao G, Jian SG, Wang ZF. Development of microsatellite markers for Suriana maritima (Surianaceae) using next-generation sequencing technology. Genet Mol Res 2015; 14:14115-8. [PMID: 26535726 DOI: 10.4238/2015.october.29.31] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Our objective was to develop microsatellite markers for use in assessing genetic variation in the small shrub or tree species Suriana maritima (Surianaceae). In China, this species is found only as a few fragmented populations and individuals on the Paracel Islands. Using next-generation genome sequencing methodology, we developed 17 novel microsatellite markers for S. maritima. Fifty-four individuals from six populations of S. maritima were examined for polymorphisms; only one allele was detected for each of the markers. Microsatellite loci developed indicate a complete absence of genetic diversity for S. maritima on the Paracel Islands in China. These markers will be useful for examining genetic variation among S. maritima populations in other areas of the world.
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Affiliation(s)
- W S Chen
- South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - G Zhao
- Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - S G Jian
- South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Z F Wang
- South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
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Abstract
This study evaluated the growth performance and meat characteristics of grower geese whose diets included garlic scape meal (GSM), a by-product of garlic production. Scape is the leaf-less flower stem of garlic. Garlic scape (GS) extracts contained 84.7 ± 3.8 μg/g dry weight (DW), 81.4 ± 8.2 μg/g DW, 0.78 ± 0.05 mg gallic acid equivalent/g DW and 31.67 ± 2.25 μg/g DW of allicin, alliin, total phenolics and flavonoid contents, respectively. In total, 120 White Roman geese aged 5 weeks were randomly distributed among 12 pens and fed on a grower diet ad libitum during the growth period. Employing a completely random design, 5 males and 5 females were placed in each pen. Each treatment was applied to three pens (in total 30 birds) and the treatments comprised the following: 1) control (maize-soybean meal), 2) 5% of maize replaced with 5% of GSM (5% GSM), 3) 10% of maize replaced with 10% of GSM (10% GSM) and 4) 15% of maize replaced with 15% of GSM (15% GSM). Each group of 30 birds was treated for 8 weeks. The results revealed that the 15% GSM group was characterised by a lower feed conversion ratio than the control group; however, these groups did not differ significantly in their body weights (BWs). In addition, the 10% GSM group did not differ in both the feed conversion ratio and consumption. The flavour intensity score of meats in the 10% GSM group was significantly lower than those of meats in the 5% GSM and control groups. The general acceptability scores of meats in the 5% GSM and control groups were higher than those of meat in the 10% GSM group. The study concluded that 5% dietary GSM in the feed did not adversely affect the growth performance, meat characteristics or sensory evaluation of grower geese. Hence, the environment can be protected by including agricultural waste in goose diets.
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Affiliation(s)
- M J Lin
- a Department of Animal Science , National Chung Hsing University , Taichung 402 , Taiwan.,b Changhua Animal Propagation Station, Livestock Research Institute, Council of Agriculture , Changhua 512 , Taiwan
| | - S C Chang
- a Department of Animal Science , National Chung Hsing University , Taichung 402 , Taiwan.,b Changhua Animal Propagation Station, Livestock Research Institute, Council of Agriculture , Changhua 512 , Taiwan
| | - Y S Jea
- b Changhua Animal Propagation Station, Livestock Research Institute, Council of Agriculture , Changhua 512 , Taiwan
| | - W S Chen
- c Division of Animal Products Procession , Livestock Research Institute, Council of Agriculture , Tainan 712 , Taiwan
| | - T T Lee
- a Department of Animal Science , National Chung Hsing University , Taichung 402 , Taiwan
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Özçakar L, Kara M, Chang KV, Tok F, Hung CY, Akkaya N, Wu CH, Çarli AB, Hsiao MY, Tekin L, Wang TG, Ulaşlı AM, Chen WS, De Muynck M. EURO-MUSCULUS/USPRM. Basic scanning protocols for knee. Eur J Phys Rehabil Med 2015; 51:641-646. [PMID: 26351105] [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: 06/05/2023]
Abstract
In this protocol, the patient/probe positionings, anatomical drawings and ultrasound images of commonly scanned knee structures are described. This practical guide is prepared (with an international consensus of several expert physiatrists) to serve as a uniform/standard approach especially for beginner sonographers.
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Affiliation(s)
- L Özçakar
- Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey -
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31
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Özçakar L, Kara M, Chang KV, Akkaya N, Hung CY, Tok F, Wu CH, Çarli AB, Hsiao MY, Tekin L, Wang TG, Ulaşlı AM, Chen WS, De Muynck M. EURO-MUSCULUS/USPRM. Basic scanning protocols for hip. Eur J Phys Rehabil Med 2015; 51:635-640. [PMID: 26351107] [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: 06/05/2023]
Abstract
In this protocol, the patient/probe positionings, anatomical drawings and ultrasound images of commonly scanned hip structures are described. This practical guide is prepared (with an international consensus of several expert physiatrists) to serve as a uniform/standard approach especially for beginner sonographers.
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Affiliation(s)
- L Özçakar
- Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey -
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Özçakar L, Kara M, Chang KV, Bayram Çarli A, Hung CY, Tok F, Wu CH, Akkaya N, Hsiao MY, Tekin L, Wang TG, Ulaşlı AM, Chen WS, De Muynck M. EURO-MUSCULUS/USPRM. Basic Scanning Protocols for Ankle and foot. Eur J Phys Rehabil Med 2015; 51:647-653. [PMID: 26351106] [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: 06/05/2023]
Abstract
In this protocol, the patient/probe positionings, anatomical drawings and ultrasound images of commonly scanned ankle/foot structures are described. This practical guide is prepared (with an international consensus of several expert physiatrists) to serve as a uniform/standard approach especially for beginner sonographers.
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Affiliation(s)
- L Özçakar
- Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey -
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Desjouy C, Fouqueray M, Lo CW, Muleki Seya P, Lee JL, Bera JC, Chen WS, Inserra C. Counterbalancing the use of ultrasound contrast agents by a cavitation-regulated system. Ultrason Sonochem 2015; 26:163-168. [PMID: 25682465 DOI: 10.1016/j.ultsonch.2014.12.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Revised: 11/24/2014] [Accepted: 12/26/2014] [Indexed: 06/04/2023]
Abstract
The stochastic behavior of cavitation can lead to major problems of initiation and maintenance of cavitation during sonication, responsible of poor reproducibility of US-induced bioeffects in the context of sonoporation for instance. To overcome these disadvantages, the injection of ultrasound contrast agents as cavitation nuclei ensures fast initiation and lower acoustic intensities required for cavitation activity. More recently, regulated-cavitation devices based on the real-time modulation of the applied acoustic intensity have shown their potential to maintain a stable cavitation state during an ultrasonic shot, in continuous or pulsed wave conditions. In this paper is investigated the interest, in terms of cavitation activity, of using such regulated-cavitation device or injecting ultrasound contrast agents in the sonicated medium. When using fixed applied acoustic intensity, results showed that introducing ultrasound contrast agents increases reproducibility of cavitation activity (coefficient of variation 62% and 22% without and with UCA, respectively). Moreover, the use of the regulated-cavitation device ensures a given cavitation activity (coefficient of variation less 0.4% in presence of UCAs or not). This highlights the interest of controlling cavitation over time to free cavitation-based application from the use of UCAs. Interestingly, during a one minute sonication, while ultrasound contrast agents progressively disappear, the regulated-cavitation device counterbalance their destruction to sustain a stable inertial cavitation activity.
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Affiliation(s)
- C Desjouy
- INSERM, U1032, LabTAU, Universit Claude Bernard Lyon 1, 151 Cours Albert Thomas, 69003 Lyon, France
| | - M Fouqueray
- INSERM, U1032, LabTAU, Universit Claude Bernard Lyon 1, 151 Cours Albert Thomas, 69003 Lyon, France
| | - C W Lo
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital & National Taiwan University College of Medicine, No.7, Zhongshan S. Rd., Taipei 100, Taiwan
| | - P Muleki Seya
- INSERM, U1032, LabTAU, Universit Claude Bernard Lyon 1, 151 Cours Albert Thomas, 69003 Lyon, France
| | - J L Lee
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital & National Taiwan University College of Medicine, No.7, Zhongshan S. Rd., Taipei 100, Taiwan
| | - J C Bera
- INSERM, U1032, LabTAU, Universit Claude Bernard Lyon 1, 151 Cours Albert Thomas, 69003 Lyon, France
| | - W S Chen
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital & National Taiwan University College of Medicine, No.7, Zhongshan S. Rd., Taipei 100, Taiwan
| | - C Inserra
- INSERM, U1032, LabTAU, Universit Claude Bernard Lyon 1, 151 Cours Albert Thomas, 69003 Lyon, France
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Özçakar L, Kara M, Chang KV, Hung CY, Tekın L, Ulaşlı AM, Wu CH, Tok F, Hsıao MY, Akkaya N, Wang TG, Çarli AB, Chen WS, De Muynck M. EURO-MUSCULUS/USPRM Basic Scanning Protocols for elbow. Eur J Phys Rehabil Med 2015; 51:485-489. [PMID: 26158916] [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: 06/04/2023]
Abstract
In this protocol, the patient/probe positionings, anatomical drawings and ultrasound images of commonly scanned elbow structures are described. This practical guide is prepared (with an international consensus of several expert physiatrists) to serve as a uniform/standard approach especially for beginner sonographers.
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Affiliation(s)
- L Özçakar
- Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey -
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Chang KV, Hung CY, Han DS, Chen WS, Wang TG, Chien KL. Corrigendum. Early versus delayed passive range of motion exercise for arthroscopic rotator cuff repair: a meta-analysis of randomized controlled trials. Am J Sports Med 2015; 43:NP26. [PMID: 26232461 DOI: 10.1177/0363546515596940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Chang KV, Hung CY, Han DS, Chen WS, Wang TG, Chien KL. Early versus delayed passive range of motion exercise for arthroscopic rotator cuff repair: a meta-analysis of randomized controlled trials. Am J Sports Med. 2015;43(5):1265-1273. (Original DOI: 10.1177/0363546514544698 )
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Özçakar L, Kara M, Chang KV, Ulaşlı AM, Hung CY, Tekin L, Wu CH, Tok F, Hsiao MY, Akkaya N, Wang T, Çarli AB, Chen WS, De Muynck M. EURO-MUSCULUS/USPRM Basic Scanning Protocols for wrist and hand. Eur J Phys Rehabil Med 2015; 51:479-484. [PMID: 26158917] [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: 06/04/2023]
Abstract
In this protocol, the patient/probe positionings, anatomical drawings and ultrasound images of commonly scanned wrist/hand structures are described. This practical guide is prepared (with an international consensus of several expert physiatrists) to serve as a uniform/standard approach especially for beginner sonographers.
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Affiliation(s)
- L Özçakar
- Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey -
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Özçakar L, Kara M, Chang KV, Tekin L, Hung CY, Ulaülı AM, Wu CH, Tok F, Hsiao MY, Akkaya N, Wang TG, Çarli AB, Chen WS, De Muynck M. EURO-MUSCULUS/USPRM Basic Scanning Protocols for shoulder. Eur J Phys Rehabil Med 2015; 51:491-496. [PMID: 26158915] [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: 06/04/2023]
Abstract
In this protocol, the patient/probe positionings, anatomical drawings and ultrasound images of commonly scanned shoulder structures are described. This practical guide is prepared (with an international consensus of several expert physiatrists) to serve as a uniform/standard approach especially for beginner sonographers.
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Affiliation(s)
- L Özçakar
- Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey -
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Chen WS, Huang CP. Mineralization of aniline in aqueous solution by electrochemical activation of persulfate. Chemosphere 2015; 125:175-181. [PMID: 25576128 DOI: 10.1016/j.chemosphere.2014.12.053] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Revised: 11/14/2014] [Accepted: 12/15/2014] [Indexed: 06/04/2023]
Abstract
Oxidative degradation of aniline in aqueous solution was carried out by coupling electrolysis with persulfate oxidation, in which a synergistic effect occurred. Experiments were performed under a batch-wise mode to evaluate the influence of various operation parameters on the electrolytic behavior, such as acidity of aqueous solution, temperature, electrode potential, persulfate anion concentration and nitrogen/oxygen gas dosage. The aniline pollutants could be almost entirely mineralized by means of electro-activated persulfate oxidation, wherein sulfate radicals were presumed to be principal oxidizing agents. Besides, electrogenerated hydrogen peroxide originated from cathodic reduction of oxygen, supplied chiefly by anodic oxidation of water, would contribute partially for decomposition of aniline. On the whole, the electro-activated persulfate process is a very promising method for treatment of aniline in wastewater.
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Affiliation(s)
- Wen-Shing Chen
- Department of Chemical and Materials Engineering, National Yunlin University of Science & Technology, 123 University Road, Section 3, Douliou, Yunlin 640, Taiwan.
| | - Chi-Pin Huang
- Department of Chemical and Materials Engineering, National Yunlin University of Science & Technology, 123 University Road, Section 3, Douliou, Yunlin 640, Taiwan
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Chu WF, Lin CJ, Chen WS, Hung SC, Chiu CF, Wu TH, Guo WY. Radiation doses of cerebral blood volume measurements using C-arm CT: A phantom study. AJNR Am J Neuroradiol 2014; 35:1073-7. [PMID: 24371024 PMCID: PMC7965136 DOI: 10.3174/ajnr.a3822] [Citation(s) in RCA: 4] [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] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Accepted: 10/12/2013] [Indexed: 12/22/2022]
Abstract
BACKGROUND AND PURPOSE Parenchymal blood volume measurement by C-arm CT facilitates in-room peritherapeutic perfusion evaluation. However, the radiation dose remains a major concern. This study aimed to compare the radiation dose of parenchymal blood volume measurement using C-arm CT with that of conventional CTP using multidetector CT. MATERIALS AND METHODS A biplane DSA equipped with C-arm CT and a Rando-Alderson phantom were used. Slab parenchymal blood volume (8-cm scanning range in a craniocaudal direction) and whole-brain parenchymal blood volume with identical scanning parameters, except for scanning ranges, were undertaken on DSA. Eighty thermoluminescent dosimeters were embedded into 22 organ sites of the phantom. We followed the guidelines of the International Commission on Radiation Protection number 103 to calculate the effective doses. For comparison, 8-cm CTP with the same phantom and thermoluminescent dosimeter distribution was performed on a multidetector CT. Two repeat dose experiments with the same scanning parameters and phantom and thermoluminescent dosimeter settings were conducted. RESULTS Brain-equivalent dose in slab parenchymal blood volume, whole-brain parenchymal blood volume, and CTP were 52.29 ± 35.31, 107.51 ± 31.20, and 163.55 ± 89.45 mSv, respectively. Variations in the measurement of an equivalent dose for the lens were highest in slab parenchymal blood volume (64.5%), followed by CTP (54.6%) and whole-brain parenchymal blood volume (29.0%). The effective doses of slab parenchymal blood volume, whole-brain parenchymal blood volume, and CTP were 0.87 ± 0.55, 3.91 ± 0.78, and 2.77 ± 1.59 mSv, respectively. CONCLUSIONS The dose measurement conducted in the current study was reliable and reproducible. The effective dose of slab parenchymal blood volume is about one-third that of CTP. With the advantages of on-site and immediate imaging availability and saving procedural time and patient transportation, slab parenchymal blood volume measurement using C-arm CT can be recommended for clinical application.
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Affiliation(s)
- W F Chu
- From the Department of Radiology (W.F.C., C.J.L., S.C.H., C.F.C., W.Y.G.), Taipei Veterans General Hospital, Taipei, TaiwanSchool of Medicine (W.F.C., C.J.L., S.C.H., C.F.C., W.Y.G.)
| | - C J Lin
- From the Department of Radiology (W.F.C., C.J.L., S.C.H., C.F.C., W.Y.G.), Taipei Veterans General Hospital, Taipei, TaiwanSchool of Medicine (W.F.C., C.J.L., S.C.H., C.F.C., W.Y.G.)
| | - W S Chen
- Department of Biomedical Imaging and Radiological Sciences (W.S.C., T.H.W.), National Yang-Ming University, Taipei, Taiwan
| | - S C Hung
- From the Department of Radiology (W.F.C., C.J.L., S.C.H., C.F.C., W.Y.G.), Taipei Veterans General Hospital, Taipei, TaiwanSchool of Medicine (W.F.C., C.J.L., S.C.H., C.F.C., W.Y.G.)
| | - C F Chiu
- From the Department of Radiology (W.F.C., C.J.L., S.C.H., C.F.C., W.Y.G.), Taipei Veterans General Hospital, Taipei, TaiwanSchool of Medicine (W.F.C., C.J.L., S.C.H., C.F.C., W.Y.G.)
| | - T H Wu
- Department of Biomedical Imaging and Radiological Sciences (W.S.C., T.H.W.), National Yang-Ming University, Taipei, Taiwan.
| | - W Y Guo
- From the Department of Radiology (W.F.C., C.J.L., S.C.H., C.F.C., W.Y.G.), Taipei Veterans General Hospital, Taipei, TaiwanSchool of Medicine (W.F.C., C.J.L., S.C.H., C.F.C., W.Y.G.)
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Kosik RO, Tran DT, Fan APC, Mandell GA, Tarng DC, Hsu HS, Chen YS, Su TP, Wang SJ, Chiu AW, Lee CH, Hou MC, Lee FY, Chen WS, Chen Q. Physician Scientist Training in the United States: A Survey of the Current Literature. Eval Health Prof 2014; 39:3-20. [PMID: 24686746 DOI: 10.1177/0163278714527290] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The declining number of physician scientists is an alarming issue. A systematic review of all existing programs described in the literature was performed, so as to highlight which programs may serve as the best models for the training of successful physician scientists. Multiple databases were searched, and 1,294 articles related to physician scientist training were identified. Preference was given to studies that looked at number of confirmed publications and/or research grants as primary outcomes. Thirteen programs were identified in nine studies. Eighty-three percent of Medical Scientist Training Program (MSTP) graduates, 77% of Clinician Investigator Training Program (CI) graduates, and only 16% of Medical Fellows Program graduates entered a career in academics. Seventy-eight percent of MSTP graduates succeeded in obtaining National Institute of Health (NIH) grants, while only 15% of Mayo Clinic National Research Service Award-T32 graduates obtained NIH grants. MSTP physician scientists who graduated in 1990 had 13.5 ± 12.5 publications, while MSTP physician scientists who graduated in 1975 had 51.2 ± 38.3 publications. Additionally, graduates from the Mayo Clinic's MD-PhD Program, the CI Program, and the NSRA Program had 18.2 ± 20.1, 26.5 ± 24.5, and 17.9 ± 26.3 publications, respectively. MSTP is a successful model for the training of physician scientists in the United States, but training at the postgraduate level also shows promising outcomes. An increase in the number of positions available for training at the postgraduate level should be considered.
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Affiliation(s)
- R O Kosik
- Santa Clara Valley Medical Center, San Jose, CA, USA
| | - D T Tran
- Department of Nephrology and Endocrinology, Children's Hospital 2, HoChiMinh City, Vietnam
| | | | - G A Mandell
- Santa Clara Valley Medical Center, San Jose, CA, USA
| | - D C Tarng
- School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - H S Hsu
- School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Y S Chen
- School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - T P Su
- School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - S J Wang
- School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - A W Chiu
- School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - C H Lee
- School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - M C Hou
- School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - F Y Lee
- School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - W S Chen
- Santa Clara Valley Medical Center, San Jose, CA, USA
| | - Q Chen
- School of Medicine, Nanjin Medical University, Nanjin, China
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Chen WS, Huang CP. Decomposition of nitrotoluenes in wastewater by sonoelectrochemical and sonoelectro-Fenton oxidation. Ultrason Sonochem 2014; 21:840-845. [PMID: 24238562 DOI: 10.1016/j.ultsonch.2013.10.026] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 10/21/2013] [Accepted: 10/28/2013] [Indexed: 06/02/2023]
Abstract
Oxidative degradation of dinitrotoluene (DNT) and 2,4,6-trinitrotoluene (TNT) in wastewater was conducted using electrochemical and electro-Fenton processes respectively, combined with ultrasonic irradiation, wherein a synergistic effect is observed. Experiments were carried out to elucidate the influence of various operating variables on the sonoelectrolytic behavior, such as electrode potential, sonoelectrolytic temperature, acidity of wastewater, oxygen dosage, and dosage of ferrous ions. It deserves to note that the nitrotoluene contaminants could be completely decomposed by sonoelectro-Fenton method, wherein hydrogen peroxide was in situ generated from cathodic reduction of oxygen, supplied partially by anodic oxidation of water. During the sonoelectrolytic process, in spite of existence of degassing phenomenon, the high yield of hydrogen peroxide was produced due to the significantly enhanced mass transfer rate of oxygen toward the cathode, caused by ultrasonic irradiation. Because higher removal efficiency of DNTs and TNT obtained at ambient conditions, it is believed that the sonoelectrolytic method is potentially applied to dispose wastewater from toluene nitration processes.
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Affiliation(s)
- Wen-Shing Chen
- Department of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Yunlin 640, Taiwan, ROC.
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42
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Kuei CK, Chian WL, Chen WS, Lee MD. Characterization and Activity of Iron-Manganese Catalysts for Carbon Monoxide Hydrogenation. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.198900075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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43
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Chen WS, Su YC. Removal of dinitrotoluenes in wastewater by sono-activated persulfate. Ultrason Sonochem 2012; 19:921-927. [PMID: 22243771 DOI: 10.1016/j.ultsonch.2011.12.012] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2011] [Revised: 11/30/2011] [Accepted: 12/13/2011] [Indexed: 05/31/2023]
Abstract
Oxidative degradation of dinitrotoluenes (DNTs) in wastewater was performed using persulfate anions combined with ultrasonic irradiation, wherein a synergistic effect is observed. The batch-wise experiments were carried out to elucidate the influence of various operating parameters on sono-activated persulfate oxidation, including ultrasonic power intensity, persulfate anion concentration, reaction temperature and acidity of wastewater. It is noteworthy that the nitrotoluene contaminants could be almost completely eliminated by virtue of sono-activated persulfate oxidation, wherein sulfate radicals serve as principal oxidants, of which amounts are significantly enhanced via addition of sodium sulfate. Based on the results given by gas chromatograph-mass spectrometer (GC-MS), it is postulated that the methyl group of DNTs preliminarily underwent oxidation pathway into dinitrobenzoic acid, followed by decarboxylation to form 1,3-dinitrobenzene (DNB). In sum, the sono-activated persulfate oxidation is a promising method for treatment of nitrotoluenes in wastewater.
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Affiliation(s)
- Wen-Shing Chen
- Department of Chemical and Materials Engineering, National Yunlin University of Science & Technology, 123 University Road, Section 3, Douliou, Yunlin 640, Taiwan.
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Chang YS, Lai CC, Chen WS, Wang SH, Chou CT, Tsai CY. Protein-losing enteropathy and premature ovarian failure in a young woman with systemic lupus erythematosus. Lupus 2012; 21:1237-9. [PMID: 22627066 DOI: 10.1177/0961203312449492] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Protein-losing enteropathy (PLE) and autoimmune oophoritis are unusual manifestations of systemic lupus erythematosus (SLE). Autoimmune oophoritis may result in menstrual disturbance and spontaneous premature ovarian failure. However, there is no validated examination to confirm the diagnosis and it is easily neglected in patients with ovarian insufficiency. A 31-year-old woman with SLE presented with PLE and autoimmune oophoritis during the long course of flares and remissions in her lupus activity. The synchronism implied the association between the two. Moreover, both conditions simultaneously had a good response to cyclosporine A (CsA) therapy.
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Affiliation(s)
- Y S Chang
- Division of Allergy, Immunology and Rheumatology and, Department of Medicine, Taipei Medical University Shuang Ho Hospital, Taipei, Taiwan
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45
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Chen WS, Huang YL. Removal of dinitrotoluenes and trinitrotoluene from industrial wastewater by ultrasound enhanced with titanium dioxide. Ultrason Sonochem 2011; 18:1232-1240. [PMID: 21190887 DOI: 10.1016/j.ultsonch.2010.11.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2010] [Revised: 11/23/2010] [Accepted: 11/29/2010] [Indexed: 05/30/2023]
Abstract
Oxidative degradation of dinitrotoluenes (DNTs) and 2,4,6-trinitrotoluene (TNT) in wastewater was conducted using ultrasonic irradiation combined with titanium dioxide (TiO(2)). The batch-wise experiments were carried out to elucidate the influence of various operating parameters on the sonolytic behavior, including power intensity, TiO(2) dosage, acidity of wastewater, reaction temperature and oxygen dosage. It is worthy to note that the nitrotoluene contaminants could be almost completely eliminated by sonochemical oxidation enhanced significantly with the addition of TiO(2) due to the supply of adsorbent and/or excess nuclei. High destruction rate of nitrotoluenes could be achieved by increasing the acidity of wastewater and decreasing the reaction temperature. According to the result given by pyrolysis/gas chromatograph-mass spectrometer (Pyrolysis/GC-MS), it is postulated that DNTs adsorbed on TiO(2) preliminarily undergo denitration pathway to o-mononitrotoluene (MNT) or oxidation pathway to 1,3-dinitrobenzene (DNB), respectively. Further, based on the spectra obtained from GC-MS, it is proposed that DNTs dissolved in wastewater proceed with similar reaction pathways as those adsorbed on TiO(2). Besides, oxidative degradation of 2,4,6-TNT results in the formation of 1,3,5-trinitrobenzene (TNB). Apparently, the sonolytic technique established is promising for direct treatment of wastewater from TNT manufacturing process.
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Affiliation(s)
- Wen-Shing Chen
- Department of Chemical and Materials Engineering, National Yunlin University of Science & Technology, Douliou, Yunlin, Taiwan.
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46
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Affiliation(s)
- Wei Wu
- Department of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Douliou, Yunlin 64002, Taiwan, R.O.C, and Refining & Manufacturing Research Center, Chinese Petroleum Corporation, Chia-Yi 60036, Taiwan, R.O.C
| | - Yu-Lu Li
- Department of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Douliou, Yunlin 64002, Taiwan, R.O.C, and Refining & Manufacturing Research Center, Chinese Petroleum Corporation, Chia-Yi 60036, Taiwan, R.O.C
| | - Wen-Shing Chen
- Department of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Douliou, Yunlin 64002, Taiwan, R.O.C, and Refining & Manufacturing Research Center, Chinese Petroleum Corporation, Chia-Yi 60036, Taiwan, R.O.C
| | - Chung-Chen Lai
- Department of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Douliou, Yunlin 64002, Taiwan, R.O.C, and Refining & Manufacturing Research Center, Chinese Petroleum Corporation, Chia-Yi 60036, Taiwan, R.O.C
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47
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Jamaiyah H, Geeta A, Safiza MN, Khor GL, Wong NF, Kee CC, Rahmah R, Ahmad AZ, Suzana S, Chen WS, Rajaah M, Adam B. Reliability, technical error of measurements and validity of length and weight measurements for children under two years old in Malaysia. Med J Malaysia 2010; 65 Suppl A:131-137. [PMID: 21488474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The National Health and Morbidity Survey III 2006 wanted to perform anthropometric measurements (length and weight) for children in their survey. However there is limited literature on the reliability, technical error of measurement (TEM) and validity of these two measurements. This study assessed the above properties of length (LT) and weight (WT) measurements in 130 children age below two years, from the Hospital Universiti Kebangsaan Malaysia (HUKM) paediatric outpatient clinics, during the period of December 2005 to January 2006. Two trained nurses measured WT using Tanita digital infant scale model 1583, Japan (0.01kg) and Seca beam scale, Germany (0.01 kg) and LT using Seca measuring mat, Germany (0.1cm) and Sensormedics stadiometer model 2130 (0.1cm). Findings showed high inter and intra-examiner reliability using 'change in the mean' and 'intraclass correlation' (ICC) for WT and LT. However, LT was found to be less reliable using the 'Bland and Altman plot'. This was also true using Relative TEMs, where the TEM value of LT was slightly more than the acceptable limit. The test instruments were highly valid for WT using 'change in the mean' and 'ICC' but was less valid for LT measurement. In spite of this we concluded that, WT and LT measurements in children below two years old using the test instruments were reliable and valid for a community survey such as NHMS III within the limits of their error. We recommend that LT measurements be given special attention to improve its reliability and validity.
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Affiliation(s)
- H Jamaiyah
- Clinical Research Centre, Hospital Kuala Lumpur, Malaysia
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Chen WS, Huang GC. Sonochemical decomposition of dinitrotoluenes and trinitrotoluene in wastewater. J Hazard Mater 2009; 169:868-874. [PMID: 19427119 DOI: 10.1016/j.jhazmat.2009.04.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2008] [Revised: 04/07/2009] [Accepted: 04/07/2009] [Indexed: 05/27/2023]
Abstract
Mineralization of dinitrotoluenes (DNT) and 2,4,6-trinitrotoluene (TNT) in wastewater was conducted under ultrasonic irradiation. The batch-wise experiments were carried out to elucidate the influence of various operating parameters on the sonolytic behavior, including power intensity, acidity of wastewater, reaction temperature and oxygen dosage. It is remarkable that the nitrotoluenes contained could be almost completely decomposed by the sonochemical oxidation method, wherein the pyrolytic reaction was responsible for the destruction of organic compounds. During the sonication tests, the influence of reaction temperature on the degradation of nitrotoluenes is the most significant, followed by power intensity, acidity of wastewater and oxygen dosage. Based on the spectra obtained from gas chromatograph/mass spectrometer (GC/MS), it is suggested that 2,4,6-TNT is preliminarily denitrated to 2,6-DNT. The denitration of 2,6-DNT and/or 2,4-DNT results in the formation of o-mononitrotoluene, which proceeds with the cleavage of nitro group into toluene, followed by oxidation of methyl group and decarboxylation. In this study, it is believed that the sonolytic technique established is promising for wastewater disposal in toluene nitration processes.
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Affiliation(s)
- Wen-Shing Chen
- Department of Chemical and Materials Engineering, National Yunlin University of Science & Technology, Yunlin 640, Taiwan, ROC.
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Chen WS, Lin SZ. Destruction of nitrotoluenes in wastewater by Electro-Fenton oxidation. J Hazard Mater 2009; 168:1562-1568. [PMID: 19376645 DOI: 10.1016/j.jhazmat.2009.03.048] [Citation(s) in RCA: 15] [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] [Subscribe] [Scholar Register] [Received: 01/23/2008] [Revised: 03/11/2009] [Accepted: 03/11/2009] [Indexed: 05/27/2023]
Abstract
Electrolytic degradation of dinitrotoluenes (DNTs) and 2,4,6-trinitrotoluene (TNT) in wastewater was conducted by Electro-Fenton's reagents. The batch-wise experiments were carried out to elucidate the influence of various operating variables on the electrolytic behavior, including electrode potential, oxygen dosage, electrolytic temperature, acidity of wastewater and dosage of ferrous ions. It deserves to note that the nitrotoluenes contained could be completely decomposed by Electro-Fenton's reagents, wherein hydrogen peroxide was in situ generated from cathodic reduction of oxygen, supplied mainly by anodic oxidation of water. During the electrochemical process, the influence of electrolytic temperature on the degradation of nitrotoluenes is the most significant, followed by electrode potential, acidity of wastewater and oxygen dosage. Based on the spectra analyzed by gas chromatograph/mass spectrometer (GC/MS), it is proposed that initial denitration of 2,4-DNT and/or 2,6-DNT gives rise to formation of o-mononitrotoluene, which undergoes the cleavage of nitro group into toluene, followed by oxidation of methyl group to benzoic acid and subsequent decarboxylation. It is believed that the electrolytic method established is potentially applied to dispose wastewater from toluene nitration processes in practice.
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Affiliation(s)
- Wen-Shing Chen
- Department of Chemical and Materials Engineering, National Yunlin University of Science & Technology, Yunlin 640, Taiwan, ROC.
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Fang HY, Tsai KC, Cheng WH, Shieh MJ, Lou PJ, Lin WL, Chen WS. The effects of power on–off durations of pulsed ultrasound on the destruction of cancer cells. Int J Hyperthermia 2009; 23:371-80. [PMID: 17558736 DOI: 10.1080/02656730701342409] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
PURPOSE Low-intensity ultrasound irradiation is a potential method for suppressing cancer cell proliferation, inducing apoptosis and delivering specific cytotoxic genes or drugs into tumors topographically in future cancer therapies. However, ultrasound attenuates rapidly in tissue and produces heat. Pulsed ultrasound is frequently used to minimize pain and possible thermal damage to the surrounding normal tissue during therapy, since it results in smaller temperature increases. This study compared three pulsed-ultrasound strategies for destroying cancer cells, measuring their induced temperature increases to determine the optimal pulsing parameters. MATERIALS AND METHODS We performed three types of experiment, involving ultrasound with (1) a fixed duty cycle of 50% with variable on- and off-times, (2) a fixed off-time with variable on-times, and (3) a fixed on-time with variable off-times. RESULTS The results show that for different types of cultured cells (HeLa, HT-29, Ca9-22 and fibroblast) exposed to ultrasound of the same frequency (1 MHz) and energy, long pulses combined with off-times that are 5-10 times longer (on-/-off-times pairs of 5/25, 25/250, or 250/2500 ms/ms) cause significant cell destruction whilst avoiding temperature increases of more than 1.5 degrees C. Furthermore, the correlation between the temperature increase and the percentage of surviving cells is low. CONCLUSIONS Pulsed ultrasound with a long on-time and an even longer off-time exerts a high cytotoxic effect but a smaller temperature increase compared with non-pulsed ultrasound. This indicates that the cytotoxic effects observed in the current study were not purely due to the thermal effects of the ultrasound.
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Affiliation(s)
- H Y Fang
- Division of Medical Engineering Research, National Health Research Institute, Miaoli, Taiwan
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