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Yamamoto H, Mariscal A, Hough O, Mesaki K, Taniguchi D, Gokhale H, Chen M, Shan H, Suzuki Y, Yoshiyasu N, Yamanashi K, Aujla T, Bojic D, Sorbo LD, Yeung J, Liu M, Cypel M, Keshavjee S. Development of Mini-Circuit Ex-Vivo Lung Perfusion to Accelerate Human Lung Translational Research. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Hough O, Mariscal A, Yamamoto H, Mangat H, Taniguchi D, Gokhale H, Chen M, Shan H, Bojic D, Aulja T, Ali A, Main K, Yoshiyasu N, Chan C, Cypel M, Keshavjee S, Liu M. Improved ex Vivo Lung Perfusion (EVLP) with Dialysis and Nutrition to Achieve Successful 36h EVLP and Lung Transplantation. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Lin L, Huang L, Li YL, Shan H. The survival of the prostate cancer patients with secondary colorectal cancer: a study based on a SEER database from southern China. Eur Rev Med Pharmacol Sci 2023; 27:1128-1133. [PMID: 36808373 DOI: 10.26355/eurrev_202302_31218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVE To evaluate the prognosis of prostate cancer patients with secondary colorectal cancer. PATIENTS AND METHODS The study included men with prostate cancer who developed colorectal cancer after radical prostatectomy in the Surveillance, Epidemiology, and Outcomes (SEER) database. After adjusting the age at first diagnosis, the prostate-specific antigen (PSA) level and Gleason score, the influence of the occurrence of secondary colorectal cancer on the prognosis of patients was evaluated. RESULTS A total of 66,955 patients were included in the present study. The median follow-up was 12 years. There were 537 patients with the incidence of the secondary colorectal cancer. The results of the three survival analysis methods all showed that the secondary colorectal cancer greatly increased the mortality risk of prostate cancer patients. Cox analysis results showed the hazard ratio (HR) is 3.79 (3.21-4.47), the Cox model with time-dependent covariates was introduced, and the result was 6.15 (5.19-7.31). When the Landmark time point is set to 5 years, the HR is 4.99 (3.85-6.47). CONCLUSIONS This study provides an important theoretical basis for evaluating the effect of secondary colorectal cancer on the prognosis of prostate cancer patients.
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Affiliation(s)
- L Lin
- Department of Urology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Hunan Cancer Hospital, Changsha, Hunan, China.
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Abdelmonem M, Cai W, Yunce M, Tang M, Shan H, Cabungan M. Racial Disparity in Antibody Against High Prevalence Antigen; Anti-U. Am J Clin Pathol 2022. [DOI: 10.1093/ajcp/aqac126.105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Abstract
Introduction/Objective
Anti-U is an IgG antibody directed against the U antigen, which usually forms after exposure to U antigen via blood transfusion and/or pregnancy. U antigen is located on glycophorin B (GYPB) as part of the MNS blood group system. Approximately 2% of the African American population lacks this antigen, making them prone to developing anti-U. Anti-U can cause hemolytic disease of fetus and newborn (HDFN) and hemolytic transfusion reactions (HTR).
Methods/Case Report
A 60-year-old African American male underwent aortic valve surgery. The patient was A Pos with a negative antibody screen. During surgery, the patient was transfused with 3 random units of packed red blood cells (PRBCs). The postoperative course was uncomplicated, and the patient was discharged home. 6 months later, the patient was admitted for another procedure and was expected to require blood products. Thus, a type and screen test was ordered, revealing pan reactivity on screening cells. This prompted further investigation. Antibody detection was performed with the solid-phase technique followed by the tube method with Polyethylene glycol (PEG) as an enhancement medium. PEG technique is the next choice of method if the solid phase requires extended antibody work up, which was the case in our patient. PEG tube method successfully identified Anti-U, and the patient's phenotype was confirmed to be U negative.
Results (if a Case Study enter NA)
N/A.
Conclusion
It is imperative to stress the importance of racial disparity while investigating antibodies against high prevalence. In our case, our suspicion was high for Anti-U, given that patient was of African American descent. Tube methods with PEG and Solid Phase techniques are usually used for antibody identification. It is recommended that patients with rare antibodies carry an Antibody ID card indicating the rare antibody they have to prevent further exposure.
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Affiliation(s)
- M Abdelmonem
- Clinical Laboratory, Stanford Healthcare , Palo Alto, California , United States
| | - W Cai
- Clinical Laboratory, Stanford Healthcare , Palo Alto, California , United States
| | - M Yunce
- Clinical Laboratory, Stanford Healthcare , Palo Alto, California , United States
| | - M Tang
- Clinical Laboratory, Stanford Healthcare , Palo Alto, California , United States
| | - H Shan
- Clinical Laboratory, Stanford Healthcare , Palo Alto, California , United States
| | - M Cabungan
- Clinical Laboratory, Stanford Healthcare , Palo Alto, California , United States
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Shan H, Zhang ZR, Wang XY, Hou JY, Zhang J. [Regulatory mechanism of deferoxamine on macrophage polarization and wound healing in mice with deep tissue injury]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2022; 38:767-777. [PMID: 36058700 DOI: 10.3760/cma.j.cn501225-20220114-00007] [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: 06/15/2023]
Abstract
Objective: To investigate the effects of deferoxamine on macrophage polarization and wound healing in mice with deep tissue injury (DTI) and its mechanism. Methods: The experimental research methods were adopted. Fifty-four male C57BL/6J mice of 6-8 weeks old were divided into DTI control group, 2 mg/mL deferoxamine group, and 20 mg/mL deferoxamine group according to random number table, with 18 mice in each group. DTI was established on the back of mice by magnet compression method. From post injury day (PID) 1, mice were injected subcutaneously with 100 µL normal saline or the corresponding mass concentration of deferoxamine solution every other day at the wound edge until the samples were collected. Another 6 mice without any treatment were selected as normal control group. Six mice in each of the three DTI groups were collected on PID 3, 7, and 14 to observe the wound changes and calculate the wound healing rate. Normal skin tissue of mice in normal control group was collected on PID 3 in other groups (the same below) and wound tissue of mice in the other three groups on PID 7 and 14 was collected for hematoxylin-eosin (HE) staining to observe the tissue morphology. Normal skin tissue of mice in normal control group and wound tissue of mice in the other three groups on PID 7 were collected, and the percentages of CD206 and CD11c positive area were observed and measured by immunohistochemical staining, and the mRNA and protein expressions of CD206, CD11c, and inducible nitric oxide synthase (iNOS) were detected by real-time fluorescence quantitative reverse transcription polymerase chain reaction and Western blotting, respectively. Normal skin tissue of mice in normal control group and wound tissue of mice in DTI control group and 20 mg/mL deferoxamine group were collected on PID 3, 7, and 14, and the protein expressions of signal transducer and activator of transcription 3 (STAT3) and interleukin-10 (IL-10) were detected by Western blotting. The sample number in each group at each time point in the above experiments. The RAW264.7 cells were divided into 50 μmol/L deferoxamine group, 100 μmol/L deferoxamine group, 200 μmol/L deferoxamine group, and blank control group, which were treated correspondingly, with 3 wells in each group. The positive cell percentages of CD206 and CD86 after 48 h of culture were detected by flow cytometry. Data were statistically analyzed with analysis of variance for repeated measurement, one-way analysis of variance, and least significant difference test. Results: On PID 7, the wound healing rates of mice in 2 mg/mL and 20 mg/mL deferoamine groups were (17.7±3.7)% and (21.5±5.0)%, respectively, which were significantly higher than (5.1±2.3)% in DTI control group (P<0.01). On PID 14, the wound healing rates of mice in 2 mg/mL and 20 mg/mL deferoamine groups were (51.1±3.8)% and (57.4±4.4)%, respectively, which were significantly higher than (25.2±3.8)% in DTI control group (P<0.01). HE staining showed that the normal skin tissue layer of mice in normal control group was clear, the epidermis thickness was uniform, and skin appendages such as hair follicles and sweat glands were visible in the dermis. On PID 7, inflammation in wound tissue was obvious, the epidermis was incomplete, and blood vessels and skin appendages were rare in mice in DTI control group; inflammatory cells in wound tissue were reduced in mice in 2 mg/mL and 20 mg/mL deferoxamine groups, and a few of blood vessels and skin appendages could be seen. On PID 14, inflammation was significantly alleviated and blood vessels and skin appendages were increased in wound tissue of mice in 2 mg/mL and 20 mg/mL deferoxamine groups compared with those in DTI control group. On PID 7, the percentages of CD206 positive area in wound tissue of mice in 2 mg/mL and 20 mg/mL deferoxamine groups were significantly higher than that in DTI control group (P<0.01), the percentage of CD206 positive area in wound tissue of mice in DTI control group was significantly lower than that in normal skin tissue of mice in normal control group (P<0.01), the percentage of CD206 positive area in wound tissue of mice in 20 mg/mL deferoxamine group was significantly higher than that in normal skin tissue of mice in normal control group (P<0.01). The percentages of CD11c positive area in wound tissue of mice in 2 mg/mL and 20 mg/mL deferoxamine groups were significantly lower than those in DTI control group and normal skin tissue in normal control group (P<0.05 or P<0.01), and the percentage of CD11c positive area in normal skin tissue of mice in normal control group was significantly higher than that in DTI control group (P<0.05). On PID 7, the CD206 mRNA expressions in the wound tissue of mice in 2 mg/mL and 20 mg/mL deferoxamine groups were significantly higher than that in DTI control group (P<0.01), but significantly lower than that in normal skin tissue in normal control group (P<0.01); the CD206 mRNA expression in wound tissue of mice in DTI control group was significantly lower than that in normal skin tissue in normal control group (P<0.01). The mRNA expressions of CD11c and iNOS in wound tissue of mice in 2 mg/mL and 20 mg/mL deferoamine groups were significantly lower than those in DTI control group (P<0.01). The mRNA expressions of CD11c in the wound tissue of mice in DTI control group, 2 mg/mL and 20 mg/mL deferoamine groups were significantly higher than that in normal skin tissue in normal control group (P<0.01). Compared with that in normal skin tissue in normal control group, the mRNA expressions of iNOS in wound tissue of mice in 2 mg/mL and 20 mg/mL deferoamine groups were significantly decreased (P<0.01), and the mRNA expression of iNOS in wound tissue of mice in DTI control group was significantly increased (P<0.01). On PID 7, the protein expressions of CD206 in the wound tissue of mice in 2 mg/mL and 20 mg/mL deferoamine groups were significantly higher than those in DTI control group and normal skin tissue in normal control group (P<0.01), and the protein expression of CD206 in wound tissue of mice in DTI control group was significantly lower than that in normal skin tissue in normal control group (P<0.01). The protein expressions of CD11c and iNOS in wound tissue of mice in 2 mg/mL and 20 mg/mL deferoamine groups were significantly lower than those in DTI control group (P<0.01). The protein expressions of CD11c and iNOS in wound tissue of mice in DTI control group were significantly higher than those in normal skin tissue in normal control group (P<0.01). The CD11c protein expressions in wound tissue of mice in 2 mg/mL and 20 mg/mL deferoamine groups were significantly higher than those in normal skin tissue in normal control group (P<0.05 or P<0.01). The protein expression of iNOS in wound tissue of mice in 2 mg/mL deferoamine group was significantly lower than that in 20 mg/mL deferoamine group and normal skin tissue in normal control group (P<0.05). On PID 3, 7, and 14, the protein expressions of STAT3 and IL-10 in wound tissue of mice in 20 mg/mL deferoxamine group were significantly higher than those in DTI control group (P<0.05 or P<0.01), and the protein expressions of STAT3 were significantly higher than those in normal skin tissue in normal control group (P<0.05 or P<0.01). On PID 7 and 14, the protein expressions of IL-10 in wound tissue of mice in 20 mg/mL deferoxamine group were significantly higher than those in normal skin tissue in normal control group (P<0.01). On PID 3, 7, and 14, the protein expressions of IL-10 in wound tissue of mice in DTI control group were significantly lower than those in normal skin tissue in normal control group (P<0.05 or P<0.01). After 48 h of culture, compared with those in blank control group, the CD206 positive cell percentages in 100 μmol/L and 200 μmol/L deferoamine groups were significantly increased (P<0.01), while the CD86 positive cell percentages in 100 μmol/L and 200 μmol/L deferoamine groups were significantly decreased (P<0.01). Conclusions: Deferoxamine can promote the polarization of macrophages toward the anti-inflammatory M2 phenotype and improve wound healing by enhancing the STAT3/IL-10 signaling pathway in DTI mice.
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Affiliation(s)
- H Shan
- School of Nursing, Qingdao University, Qingdao 266071, China
| | - Z R Zhang
- Department of Intensive Care Medicine, Affiliated Hospital of Qingdao University, Qingdao 266555, China
| | - X Y Wang
- School of Nursing, Qingdao University, Qingdao 266071, China
| | - J Y Hou
- School of Nursing, Qingdao University, Qingdao 266071, China
| | - J Zhang
- School of Nursing, Qingdao University, Qingdao 266071, China
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Zhang W, Liu FQ, Zhang LP, Ding HG, Zhuge YZ, Wang JT, Li L, Wang GC, Wu H, Li H, Cao GH, Lu XF, Kong DR, Sun L, Wu W, Sun JH, Liu JT, Zhu H, Li DL, Guo WH, Xue H, Wang Y, Gengzang CJC, Zhao T, Yuan M, Liu SR, Huan H, Niu M, Li X, Ma J, Zhu QL, Guo WW, Zhang KP, Zhu XL, Huang BR, Li JN, Wang WD, Yi HF, Zhang Q, Gao L, Zhang G, Zhao ZW, Xiong K, Wang ZX, Shan H, Li MS, Zhang XQ, Shi HB, Hu XG, Zhu KS, Zhang ZG, Jiang H, Zhao JB, Huang MS, Shen WY, Zhang L, Xie F, Li ZW, Hou CL, Hu SJ, Lu JW, Cui XD, Lu T, Yang SS, Liu W, Shi JP, Lei YM, Bao JL, Wang T, Ren WX, Zhu XL, Wang Y, Yu L, Yu Q, Xiang HL, Luo WW, Qi XL. [Status of HVPG clinical application in China in 2021]. Zhonghua Gan Zang Bing Za Zhi 2022; 30:637-643. [PMID: 36038326 DOI: 10.3760/cma.j.cn501113-20220302-00093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: The investigation and research on the application status of Hepatic Venous Pressure Gradient (HVPG) is very important to understand the real situation and future development of this technology in China. Methods: This study comprehensively investigated the basic situation of HVPG technology in China, including hospital distribution, hospital level, annual number of cases, catheters used, average cost, indications and existing problems. Results: According to the survey, there were 70 hospitals in China carrying out HVPG technology in 2021, distributed in 28 provinces (autonomous regions and municipalities directly under the central Government). A total of 4 398 cases of HVPG were performed in all the surveyed hospitals in 2021, of which 2 291 cases (52.1%) were tested by HVPG alone. The average cost of HVPG detection was (5 617.2±2 079.4) yuan. 96.3% of the teams completed HVPG detection with balloon method, and most of the teams used thrombectomy balloon catheter (80.3%). Conclusion: Through this investigation, the status of domestic clinical application of HVPG has been clarified, and it has been confirmed that many domestic medical institutions have mastered this technology, but it still needs to continue to promote and popularize HVPG technology in the future.
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Affiliation(s)
- W Zhang
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - F Q Liu
- Department of Interventional Radiology, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - L P Zhang
- Department of Radiology,Third Hospital of Taiyuan, Taiyuan 030012, China
| | - H G Ding
- Liver Disease Digestive Center,Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
| | - Y Z Zhuge
- Digestive Department,Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing 210008, China
| | - J T Wang
- Department of Hepatobiliary Surgery, Xingtai People's Hospital, Xingtai 054001, China
| | - L Li
- Department of Interventional Radiology, the First Hospital of Lanzhou University, Lanzhou 730013, China
| | - G C Wang
- Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - H Wu
- Digestive Department, West China Hospital, Sichuan University, Chengdu 610044, China
| | - H Li
- Institute of Hepatology and Department of Infectious Disease, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - G H Cao
- Department of Radiology, Shulan Hospital, Hangzhou 310022, China
| | - X F Lu
- Digestive Department, West China Hospital, Sichuan University, Chengdu 610044, China
| | - D R Kong
- Digestive Department, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - L Sun
- Department of Gastroenterology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325001, China
| | - W Wu
- Department of Gastroenterology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325001, China
| | - J H Sun
- Hepatobiliary and Pancreatic Intervention Center , the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - J T Liu
- Digestive Department,Hainan Hospital of Chinese PLA General Hospital, Sanya 572013, China
| | - H Zhu
- The 1 st Department of Interventional Radiology, the Sixth People's Hospital of Shenyang, Shenyang 110006, China
| | - D L Li
- No. 900 Hospital of the Joint Logistic Support Force, Fuzhou 350025, China
| | - W H Guo
- Department of Interventional Radiology, Meng Chao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, China
| | - H Xue
- Digestive Department, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Y Wang
- Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - C J C Gengzang
- Department of Interventional Radiology, the Fourth People's Hospital of Qinghai Province, Xining 810007, China
| | - T Zhao
- Department of Radiology,Sir Run Shaw Hospital, Zhejiang University, Hangzhou 310016, China
| | - M Yuan
- Department of Interventional Radiology Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - S R Liu
- Department of Infectious Disease,Qufu People's Hospital, Qufu 273199, China
| | - H Huan
- Digestive Department, Chengdu Office Hospital of Tibet Autonomous Region People's Government, Chengdu 610041, China
| | - M Niu
- Department of Interventional Radiology, the First Affiliated Hospital of China Medical University, Shenyang 110001, China
| | - X Li
- Department of Radiology,Tianjin Second People's Hospital, Tianjin 300192, China
| | - J Ma
- Department of Interventional Vascular Surgerg, People's Hospital of Ningxia Hui Autonomous Region, Yinchuan 750002, China
| | - Q L Zhu
- Digestive Department,the Affiliated Hospital of Southwest Medical University, Luzhou 646099, China
| | - W W Guo
- Department of Interventional Radiology, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - K P Zhang
- Department of Hepatobiliary Surgery, Xingtai People's Hospital, Xingtai 054001, China
| | - X L Zhu
- Department of Surgery, the First Hospital of Lanzhou University, Lanzhou 730013, China
| | - B R Huang
- Department of Interventional Vascular Surgery,Jingzhou First People's Hospital, Jingzhou, China
| | - J N Li
- Liver Diseases Department,Jiamusi Infectious Disease Hospital, Jiamusi 154015, China
| | - W D Wang
- Hepatobiliary, Pancreatic and Spleen Surgery Department,Shunde Hospital, Southern Medical University, Foshan 528427, China
| | - H F Yi
- Digestive Department,Wuhan First Hospital, Wuhan 430030, China
| | - Q Zhang
- Interventional Vascular Surgery Department, Affiliated Zhongda Hospital of Southeast University, Nanjing 210009, China
| | - L Gao
- Oncology and Vascular Interventional Department, First Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - G Zhang
- Digestive Department, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530016, China
| | - Z W Zhao
- Department of Interventional Radiology, Lishui Municipal Central Hospital, Zhejiang University School of Medicine, Lishui 323030, China
| | - K Xiong
- Digestive Department, the Second Affiliated Hospital of Nanchang University, Nanchang 330008, China
| | - Z X Wang
- Inner Mongolia Medical University Affiliated Hospital, Hohhot 010050, China
| | - H Shan
- Interventional Medicine Center, the Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai 519000, China
| | - M S Li
- Department of Endovascular Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - X Q Zhang
- Digestive Department, the Second Hospital of Hebei Medical University, Shijiazhuang 050004, China
| | - H B Shi
- Department of Interventional Radiology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - X G Hu
- Interventional Radiology Department,Jinhua Municipal Central Hospital, Jinhua 321099, China
| | - K S Zhu
- Interventional Radiology Department, the Second Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510260, China
| | - Z G Zhang
- Department of Liver Surgery,Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430014, China
| | - H Jiang
- Infectious Disease Department,Second Affiliated Hospital, Military Medical University of the Air Force, Xi'an 710038, China
| | - J B Zhao
- Department of Vascular and Interventional Radiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - M S Huang
- Interventional Radiology Department, the Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510000, China
| | - W Y Shen
- Digestive Department,Fuling Hospital Affiliated to Chongqing University, Chongqing 400030, China
| | - L Zhang
- Hepatobiliary Pancreatic Center,Tsinghua Changgung Hospital, Beijing 102200, China
| | - F Xie
- Function Department,Lanzhou Second People's Hospital, Lanzhou 730030, China
| | - Z W Li
- Hepatobiliary Surgery Department,Shenzhen Third People's Hospital, Shenzhen518112, China
| | - C L Hou
- Department of Interventional Radiology, the First Affiliated Hospital of USTC, Hefei 230001, China
| | - S J Hu
- Digestive Department,People's Hospital of Ningxia Hui Autonomous Region, Yinchuan 750002, China
| | - J W Lu
- Department of Interventional Radiology, Qufu People's Hospital, Qufu 273199, China
| | - X D Cui
- Department of Interventional Radiology, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530016, China
| | - T Lu
- Department of Gastroenterology, Yangquan Third People's Hospital, Yangquan 045099,China
| | - S S Yang
- Department of Gastroenterology, General Hospital of Ningxia Medical University , Yinchuan 750003, China
| | - W Liu
- Department of Interventional Radiology, Lishui People's Hospital, Zhejiang Province, Lishui 323050, China
| | - J P Shi
- Department of Liver Diseases, Affiliated Hospital of Hangzhou Normal University, Hangzhou 310015, China
| | - Y M Lei
- Interventional Radiology Department, People's Hospital of Tibet Autonomous Region, Lhasa 850001, China
| | - J L Bao
- Department of Gastroenterology, Shannan people's Hospital,Shannan 856004, China
| | - T Wang
- Department of Interventional Radiology, Yantai Yuhuangding Hospital Affiliated to Qingdao University, Yantai 264099,China
| | - W X Ren
- Interventional Treatment Center, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011,China
| | - X L Zhu
- Interventional Radiology Department, the First Affiliated Hospital of Suzhou University, Suzhou 215006, China
| | - Y Wang
- Department of Interventional Vascular Surgery, the Second Affiliated Hospital of Hainan Medical College, Haikou 570216, China
| | - L Yu
- Department of Interventional Radiology, Sanming First Hospital Affiliated to Fujian Medical University,Sanming 365001,China
| | - Q Yu
- Interventional Radiology Department, Fifth Medical Center of PLA General Hospital, Beijing 100039, China
| | - H L Xiang
- Department of Gastroenterology, Tianjin Third Central Hospital, Tianjin 300170, China
| | - W W Luo
- Deparment of Infectious Diseases, the Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - X L Qi
- Center of Portal Hypertension Department of Radiology, Zhongda Hospital of Southeast University, Nanjing 210009, China
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Tao X, Chen D, Fan Y, Zhang L, Shan H, Wei Y, Yu X, Zhong T, Wang L, Chung SK, Yu Y, Xiao Y. A cross-sectional study for the mental health status and sleep quality among college students in Macao during the COVID-19 pandemic. PeerJ 2021; 9:e12520. [PMID: 34966578 PMCID: PMC8663623 DOI: 10.7717/peerj.12520] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 08/11/2021] [Accepted: 10/29/2021] [Indexed: 11/20/2022] Open
Abstract
Objectives The main focus of this study was to investigate the effect of the coronavirus disease (COVID-19) pandemic on the mental health condition and sleep quality of college students in Macao. In addition, the students’ behaviours during the pandemic, such as drinking alcohol, taking sleeping pills, and seeking psychological counselling were analyzed. Method A cross-sectional survey of mental health and sleep quality status, as well as the possible behavioral risk factors, was conducted among the college students of Macao in August, 2020 during the COVID-19 pandemic. An online self-report questionnaire survey method was applied to assess the general demographics and related lifestyle behaviors of students. The general mental health condition and sleep quality were evaluated through the General Health Questionnaire (GHQ-12) and Pittsburgh Sleep Quality Index (PSQI) questionnaires, respectively. The main statistical methods included the Chi-square test, Bonferroni correction, and Pearson correlation. Data analysis was performed using SPSS Version 24.0. Results A total of 980 students were investigated in the study, of which 977 completed the survey. During the COVID-19 pandemic period, overall college students in Macao were psychologically well adjusted and reported good quality of sleep. However, female students were in poorer psychological condition than males (P < 0.05). Moreover, the students over 20 years of age had poorer sleep quality than students aged less than or equal to 20 (P < 0.05). The significant differences were found among the students in different study majors for the mental health status and sleep quality (both P < 0.05), which were associated with certain behaviors, such as drinking alcohol, taking sleeping pills, and seeking for help in psychological counselling during the COVID-19 pandemic period. Conclusions Poor mental health status could be either the consequence or cause of sleep disturbance, which might further affected physical health. Therefore, regular assessment of mental health condition and sleep quality of college students is particularly necessary during public health emergencies, such as the COVID-19 pandemic, and appropriate intervention should be provided to the students.
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Affiliation(s)
- Xiaoyu Tao
- Faculty of Medicine, Macau University of Science and Technology, Macao, China
| | - Dong Chen
- Faculty of Medicine, Macau University of Science and Technology, Macao, China
| | - Yawen Fan
- Faculty of Medicine, Macau University of Science and Technology, Macao, China
| | - Lanxin Zhang
- Faculty of Medicine, Macau University of Science and Technology, Macao, China
| | - Houqian Shan
- Faculty of Medicine, Macau University of Science and Technology, Macao, China
| | - Yi Wei
- School of Public Administration, Jilin University, Changchun, Jilin, China
| | - Xi Yu
- Faculty of Medicine, Macau University of Science and Technology, Macao, China
| | - Tian Zhong
- Faculty of Medicine, Macau University of Science and Technology, Macao, China
| | - Ling Wang
- Faculty of Medicine, Macau University of Science and Technology, Macao, China
| | - Sookja Kim Chung
- Faculty of Medicine, Macau University of Science and Technology, Macao, China
| | - Yaqin Yu
- Faculty of Health Sciences, Zhuhai College of Science and Technology, Zhuhai, Guangdong, China
| | - Ying Xiao
- Faculty of Medicine, Macau University of Science and Technology, Macao, China
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8
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Gong TT, Sun FZ, -Y Chen J, Liu JF, Yan Y, Li D, Zhou B, Shan H. The circular RNA circPTK2 inhibits EMT in hepatocellular carcinoma by acting as a ceRNA and sponging miR-92a to upregulate E-cadherin. Eur Rev Med Pharmacol Sci 2021; 24:9333-9342. [PMID: 33015774 DOI: 10.26355/eurrev_202009_23015] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Hepatocellular carcinoma (HCC) is a common malignant tumor. Increasing evidence has demonstrated that microRNAs (miRNAs) play an important role in a wide variety of cellular processes. However, there are few reports about the role and underlying molecular mechanisms of miRNAs in HCC. PATIENTS AND METHODS qRT-PCR and Western blots were performed to quantify the expression of miR-92a, E-cadherin, and circPTK2. Proliferation and invasion assays were performed to explore the function of miR-92a and circPTK2. A Luciferase assay was used to test the relationship between miR-92a, E-cadherin, and circPTK2. RESULTS In this study, we found that miR-92a was upregulated in HCC tissues and HCC cell lines. Overexpression of miR-92a enhanced cell proliferation and invasion by targeting the E-cadherin 3'UTR in HCC cells. Furthermore, we found that circPTK2 inhibited EMT by inhibiting miR-92a, preventing its ability to downregulate E-cadherin in HCC cells. CONCLUSIONS We identified a regulatory axis comprising circPTK2/miR-92a/E-cadherin in HCC cells that may serve as a valuable biomarker and therapeutic target for patients with HCC.
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Affiliation(s)
- T-T Gong
- Department of Interventional Medicine, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China.
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Ren W, Zhang CH, Li G, Liu G, Shan H, Li J. Two genetically similar H9N2 influenza viruses isolated from different species show similar virulence in minks but different virulence in mice. Acta Virol 2020; 64:67-77. [PMID: 32180420 DOI: 10.4149/av_2020_109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The H9N2 influenza virus has been frequently endemic in poultry, infected mammals and humans and has threatened public health. It is therefore imperative to understand the molecular mechanism enabling this virus to jump from avian to mammalian species. In this study, two H9N2 influenza viruses were isolated from the same region in eastern China but from different hosts; one was isolated from mink and named A/Mink/Shandong/WM01/2014(H9N2)(WM01), while the other was isolated from chicken and named A/Chicken/Shandong/LX830/2014(H9N2)(LX830). Sequencing and phylogenetic analysis showed that both H9N2 influenza viruses had similar genetic backgrounds. The results of infection in minks suggested that both viruses caused significant weight loss and pathological changes in the lungs. Mouse infection showed that LX830 was nonpathogenic in mice, but WM01 resulted in 25% mortality and pathological changes in the lungs, such as severe edema and diffused inflammation of the interalveolar septa. Comparison of the full genomes of both H9N2 influenza viruses showed 52-nucleotide-synonym mutations in 8 gene segments and 7-nucleotide-antonym mutations, resulting in 7 amino acid (AA) substitutions distributed in the PB1, PA, NA and M gene segments. None of these mutations did affect splicing of the M and NS gene segments at the nucleotide level or minor open reading frames (ORFs), such as PB1-F2 and PA-X. Phylogenetic analysis showed that both H9N2 influenza viruses belong to the prevalent epidemic genotype in Asia. Keywords: H9N2 influenza virus; chicken; minks; pathogenicity; phylogenetic.
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10
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Nykanen A, Mariscal A, Ali A, Chen M, Gokhale H, Shan H, Cypel M, Liu M, Keshavjee S. Evaluation of Lung Quality by Near-Infrared Fluorescent Imaging during Ex Vivo Lung Perfusion. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.756] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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11
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Sage A, Richard-Greenblatt M, Zhong K, Snow M, Babits M, Chen M, Gokhale H, Galasso M, Shan H, Cypel M, Liu M, Kain K, Keshavjee S. Validation of an EVLP Perfusate Diagnostic Test for the Prediction of Lung Transplant Outcomes. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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12
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Yang X, Wang X, Chi M, Zhang M, Shan H, Zhang QH, Zhang J, Shi J, Zhang JZ, Wu RM, Li YL. Osteoprotegerin mediate RANK/RANKL signaling inhibition eases asthma inflammatory reaction by affecting the survival and function of dendritic cells. Allergol Immunopathol (Madr) 2019; 47:179-184. [PMID: 30292447 DOI: 10.1016/j.aller.2018.06.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 05/22/2018] [Accepted: 06/13/2018] [Indexed: 12/21/2022]
Abstract
INTRODUCTION Asthma is a chronic inflammatory, heterogeneous airway disease affecting millions of people around the world. Dendritic cells (DCs) are considered the most important antigen-presenting cell in asthma airway inflammatory reaction. But whether osteoprotegerin (OPG) mediate RANK/RANKL signaling inhibition influences asthma development by affecting the survival and function of DCs remains unclear. In this study, we assessed the effects of OPG on DCs and asthma. MATERIAL AND METHODS BALB/c mice immunized with ovalbumin (OVA) were challenged thrice with an aerosol of OVA every second day for eight days. Dexamethasone (1.0mg/kg) or OPG (50μg/kg) was administered intraperitoneally to OVA-immunized BALB/c mice on day 24 once a day for nine days. Mice were analyzed for effects of OPG on asthma, inflammatory cell infiltration and cytokine levels in lung tissue. The expression of RANK and β-actin was detected by Western Blot. DCs were isolated from mouse bone morrow. Cell survival was assessed by cell counting. The content of IL-12 was detected by ELISA. RESULTS Results showed that OVA increased the number of inflammatory factors in BALF, elevated lung inflammation scores in mice. OPG reversed the alterations induced by OVA in the asthmatic mice. OPG inhibited the survival and function of DC via inhibition of RANK/RANKL signaling. CONCLUSIONS This research proved inhibition of RANK/RANKL signaling by OPG could ease the inflammatory reaction in asthma, providing new evidence for the application of OPG on asthma.
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Affiliation(s)
- X Yang
- Department of Respiratory Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - X Wang
- Department of Respiratory Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - M Chi
- Department of Pediatrics, BaYi Children's Hospital of the PLA Army General Hospital, Beijing, China; The Clinical Medical College of the PLA Army, Second Military Medical University of People's Liberation Army, Shanghai, China
| | - M Zhang
- Department of Respiratory Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - H Shan
- Department of Respiratory Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Q-H Zhang
- Department of Respiratory Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - J Zhang
- Department of Respiratory Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - J Shi
- Department of Respiratory Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - J-Z Zhang
- Department of Respiratory Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - R-M Wu
- Department of Respiratory Medicine, Shaanxi Provincial People's Hospital, Xi'an, China
| | - Y-L Li
- Department of Respiratory Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
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13
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He W, Li M, Zuo L, Wang M, Jiang L, Shan H, Han X, Yang K, Han X. Acupuncture for treatment of insomnia: An overview of systematic reviews. Complement Ther Med 2019; 42:407-416. [DOI: 10.1016/j.ctim.2018.12.020] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 12/27/2018] [Accepted: 12/27/2018] [Indexed: 12/22/2022] Open
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14
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Bloch EM, Yang Y, He M, Tonnetti L, Liu Y, Wang J, Guo Y, Li H, Leiby DA, Shan H. A pilot serosurvey of Babesia microti in Chinese blood donors. Vox Sang 2018; 113:345-349. [PMID: 29582438 DOI: 10.1111/vox.12648] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 02/24/2018] [Accepted: 02/26/2018] [Indexed: 12/01/2022]
Abstract
BACKGROUND AND OBJECTIVES Babesia spp. are tick-borne, intraerythrocytic protozoan parasites, several of which are transfusion-transmissible. Transfusion-transmitted babesiosis poses serious risk to a diverse patient population, including neonates, patients aged >50 years, the asplenic and the immunocompromised that are over-represented among transfusion recipients. Despite reports of B. microti and B. venatorum in People's Republic of China (PRC), no surveillance of blood donors for Babesia has previously been undertaken. We sought to determine the rates of B. microti seroreactivity in a sample of blood donors in the PRC. MATERIALS AND METHODS A pilot serosurvey was conducted of community blood donors (n = 1000) who donated July-August 2016 at Mudanjiang Blood Center (Heilongjiang Province) using indirect fluorescent antibody testing for antibodies against B. microti. The slides were prepared using B. microti-infected hamster blood. Samples that were initially positive to a titre of 64 were subjected to repeat IFA testing. Final seroreactivity was based on repeat reactivity to ≥64. RESULTS A total of 1000 individual donor samples were evaluated, comprising 888 whole blood and 112 platelet donations. Thirteen of 1000 (1·3%) donors were seroreactive for B. microti [8 (0·8%) and five (0·05%) at titres of 64 and 128, respectively]. CONCLUSION Our preliminary findings support the need for expanded Babesia surveillance in Chinese blood donors, replete with molecular evaluation, to evaluate the risk to the blood supply.
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Affiliation(s)
- E M Bloch
- Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Y Yang
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Chengdu, China
| | - M He
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Chengdu, China
| | | | - Y Liu
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Chengdu, China
| | - J Wang
- Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Y Guo
- Mudanjiang blood center, Heilongjiang, China
| | - H Li
- Mudanjiang blood center, Heilongjiang, China
| | - D A Leiby
- United States Food and Drug Administration, Silver Spring, MD, USA
| | - H Shan
- Stanford University School of Medicine, Palo Alto, CA, USA
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15
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Luo K, Shan H, Hu Y, Lin X, Fu J. P-183LONG-TERM AND SURGICAL OUTCOMES OF ENDOSCOPIC SUBMUCOSAL DISSECTION VERSUS MINIMALLY INVASIVE OESOPHAGECTOMY FOR SUPERFICIAL OESOPHAGEAL SQUAMOUS CELL CARCINOMA. Interact Cardiovasc Thorac Surg 2017. [DOI: 10.1093/icvts/ivx280.183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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16
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Chen WG, Shan H, Ye JM, Zhang PW, Jin KL, Lin K, Chu WJ. [Impact of carbon dioxide pneumoperitoneum in operating rooms on the health of medical staffs]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2017; 35:193-195. [PMID: 28511304 DOI: 10.3760/cma.j.issn.1001-9391.2017.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the impact of CO(2) pneumoperitoneum in operating rooms on the health of medical staffs. Methods: In June 2016, the thirty-three medical staffs in operating rooms were chosen as the object of the research.Seventeen people who took part in the pneumoperitoneum operation were selected as a exposure group and sixteen people who took part in the laparotomy operation were selected as a control group.Vital signs and arterial blood gases of medical staffs in the two groups were both measured in pre-operation and post-operation. Occupational Health Questionnaires were conducted to collect information on age, weight and postoperative symptoms. The level of CO(2) in operating room was determined by a portable infrared CO(2) analyzer. Results: Compared with the control group, the concentration of CO(2) in the exposed group was higherat T(1), T(2) and T(3) (t=22.227, 13.583, 17.408, P<0.05) . Heart rates and PaCO(2) in the exposure group raised greatly (t=2.132, 2.129, P<0.05) , while pH decreased (t=-3.015, P<0.05) . The differences between the two groups were statistically significant. Conclusion: The increase of mild acidosis and thesense of job burnout in medical staffs could be caused by CO(2) pollution in the operating rooms.
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Affiliation(s)
- W G Chen
- Zhejiang Hospital, Hangzhou 310000, China
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17
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Xia XH, Xiao CJ, Shan H. Facilitation of liver cancer SMCC7721 cell aging by sirtuin 4 via inhibiting JAK2/STAT3 signal pathway. Eur Rev Med Pharmacol Sci 2017; 21:1248-1253. [PMID: 28387906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE Liver cancer severely threatens public health. Molecular targeted treatment is the further of cancer treatment. The functional role of Sir-related enzymes 4 (sirtuin 4) in treating liver cancer still requires further investigation. This study aimed to elucidate the effect of sirtuin 4 on aging of SMCC7721 liver cancer cell line, to underlying molecular mechanism and potential application in clinics. MATERIALS AND METHODS Adriamycin-induced aging model was established on SMCC7721 liver cancer cell line. Sirtuin 4 over-expression or siRNA plasmid was transfected. Cell aging was measured by β-galactosidase approach. Aging-related proteins P53 and P16 were quantified in Western blot, which also examined activation of Janus kinase 2 (JAK2) signal pathway. CP-690550 was used to suppress JAK2 signal pathway for measuring aging status of SMCC7721 cells. RESULTS In aged SMCC7721 cells, sirtuin 4 was up-regulated, whilst P53 and P16 protein levels were elevated, in accompanied with JAK2/STAT3 signal pathway. Transfection of sirtuin 4 over-expression plasmid or siRNA increased or decreased sirtuin 4 expression. Adriamycin-induced aging was enhanced or suppressed, accompanied with inhibited or potentiated JAK2 signal pathway in sirtuin 4 up-regulation or down-regulation cells, respectively. The usage of JAK2 signal inhibitor, CP-690550, enhanced Adriamycin-induced cell aging. CONCLUSIONS Sirtuin 4 facilitates Adriamycin-induced aging of SMCC7721 liver cancer cells via inhibiting JAK2/STAT3 signal pathway, thus providing one novel anti-cancer strategy.
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Affiliation(s)
- X-H Xia
- Interventional Radiology Institute, Sun Yat-sen University, Guangzhou, Guangdong, China.
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18
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Yu B, An Y, Xu G, Shan H. Detection of Chlamydia trachomatis and Neisseria gonorrhoeae based on cross-priming amplification. Lett Appl Microbiol 2016; 62:399-403. [PMID: 26949934 DOI: 10.1111/lam.12560] [Citation(s) in RCA: 8] [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] [Received: 07/28/2015] [Revised: 02/29/2016] [Accepted: 03/01/2016] [Indexed: 11/30/2022]
Abstract
UNLABELLED Rapid, sensitive and specific isothermal nucleic acid amplification methods of Chlamydia trachomatis (C. trachomatis) and Neisseria gonorrhoeae (N. gonorrhoeae) have been developed based on cross-priming amplification (CPA). The amplicon of CPA can be detected by a disposable amplicon cross-contamination proof device. The whole assay takes 1-1·5 h from amplification to read out. Ten fold serial dilutions of quantified plasmids were used to test the CPA assay sensitivities, with the detection limits of 45 copies per reaction and 65 copies per reaction for C. trachomatis and N. gonorrhoeae respectively. The specificities of CPA assays for C. trachomatis and N. gonorrhoeae were tested by using total DNA extracted from nine other bacterial strains, and no cross-reactivity was detected. Eighty clinical cervical or vaginal swab specimens were tested by both CPA and real-time polymerase chain reaction (PCR) with the consistencies of 98·75% (79/80) and 97·5% (78/80) for C. trachomatis and N. gonorrhoeae respectively. Using real-time PCR as a reference standard, the clinical sensitivity (positive) and specificity (negative) of CPA was found to be 98·15% (53/54) and 100% (26/26) for C. trachomatis, and 93·75% (30/32) and 100% (48/48) for N. gonorrhoeae. Eight swab specimens tested positive for both C. trachomatis and N. gonorrhoeae simultaneously by real-time PCR and CPA assay. This study demonstrated that CPA is an affordable and accessible assay for C. trachomatis and N. gonorrhoeae detection, with high sensitivity and specificity. SIGNIFICANCE AND IMPACT OF THE STUDY Rapid and specific detection of the sexually transmitted pathogens Chlamydia trachomatis (C. trachomatis) and Neisseria gonorrhoeae (N. gonorrhoeae) would enable early treatment and management of their spread. Here, for the first time, a user friendly DNA isothermal amplification method named cross-priming amplification (CPA), was used to test C. trachomatis and N. gonorrhoeae with high sensitivity and specificity. The results indicate that CPA has great potential for improving C. trachomatis and N. gonorrhoeae diagnostics which could be particularly advantageous in resource-limited areas.
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Affiliation(s)
- B Yu
- Department of Clinical Laboratory, College of Medicine, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, Zhejiang, China
| | - Y An
- Department of Gastroenterology, Yulin City first Hospital, Shaanxi, China
| | - G Xu
- Division of Biomedical Engineering, School of Engineering, University of Glasgow, Glasgow, UK
| | - H Shan
- Adicon Clinical Laboratories, Hangzhou, Zhejiang, China
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Zhang X, Tang Y, Xie Y, Ding C, Xiao J, Jiang X, Shan H, Lin Y, Li C, Hu D, Li T, Sheng L. Total magnetic resonance imaging burden of cerebral small-vessel disease is associated with post-stroke depression in patients with acute lacunar stroke. Eur J Neurol 2016; 24:374-380. [PMID: 27933697 DOI: 10.1111/ene.13213] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 10/25/2016] [Indexed: 11/28/2022]
Affiliation(s)
- X. Zhang
- Department of Neurology; Second Affiliated Hospital of Nanjing University of Chinese Medicine; Nanjing Jiangsu China
| | - Y. Tang
- Department of Neurology; Second Affiliated Hospital of Nanjing University of Chinese Medicine; Nanjing Jiangsu China
| | - Y. Xie
- Department of Neurology; Jinling Hospital; Nanjing University School of Medicine; Nanjing Jiangsu China
| | - C. Ding
- Department of Neurology; Second Affiliated Hospital of Nanjing University of Chinese Medicine; Nanjing Jiangsu China
| | - J. Xiao
- Department of Neurology; Second Affiliated Hospital of Nanjing University of Chinese Medicine; Nanjing Jiangsu China
| | - X. Jiang
- Department of Neurology; Second Affiliated Hospital of Nanjing University of Chinese Medicine; Nanjing Jiangsu China
| | - H. Shan
- Department of Radiology; Second Affiliated Hospital of Nanjing University of Chinese Medicine; Nanjing Jiangsu China
| | - Y. Lin
- Department of Radiology; Hainan General Hospital; Haikou Hainan China
| | - C. Li
- Department of Neurology; Second Affiliated Hospital of Nanjing University of Chinese Medicine; Nanjing Jiangsu China
| | - D. Hu
- Department of Neurology; Second Affiliated Hospital of Nanjing University of Chinese Medicine; Nanjing Jiangsu China
| | - T. Li
- Department of Neurology; Second Affiliated Hospital of Nanjing University of Chinese Medicine; Nanjing Jiangsu China
| | - L. Sheng
- Department of Neurology; Second Affiliated Hospital of Nanjing University of Chinese Medicine; Nanjing Jiangsu China
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Liu L, Luo Y, Accensi F, Ganges L, Rodríguez F, Shan H, Ståhl K, Qiu HJ, Belák S. Pre-Clinical Evaluation of a Real-Time PCR Assay on a Portable Instrument as a Possible Field Diagnostic Tool: Experiences from the Testing of Clinical Samples for African and Classical Swine Fever Viruses. Transbound Emerg Dis 2016; 64:e31-e35. [PMID: 27311689 DOI: 10.1111/tbed.12538] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [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: 12/10/2015] [Indexed: 02/06/2023]
Abstract
African swine fever (ASF) and classical swine fever (CSF) are two highly infectious transboundary animal diseases (TADs) that are serious threats to the pig industry worldwide, including in China, the world's largest pork producer. In this study, a duplex real-time PCR assay was developed for the rapid detection and differentiation of African swine fever virus (ASFV) and classical swine fever virus (CSFV). The assay was performed on a portable, battery-powered PCR thermocycler with a low sample throughput (termed as 'T-COR4 assay'). The feasibility and reliability of the T-COR4 assay as a possible field method was investigated by testing clinical samples collected in China. When evaluated with reference materials or samples from experimental infections, the assay performed in a reliable manner, producing results comparable to those obtained from stationary PCR platforms. Of 59 clinical samples, 41 had results identical to a two-step CSFV real-time PCR assay. No ASFV was detected in these samples. The T-COR4 assay was technically easy to perform and produced results within 3 h, including sample preparation. In combination with a simple sample preparation method, the T-COR4 assay provides a new tool for the field diagnosis and differentiation of ASF and CSF, which could be of particular value in remote areas.
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Affiliation(s)
- L Liu
- National Veterinary Institute (SVA), Uppsala, Sweden.,The OIE Collaborating Centre for the Biotechnology-based Diagnosis of Infectious Diseases in Veterinary Medicine, Uppsala, Sweden.,Joint Laboratory for Veterinary Microbiology between SVA and HVRI, Uppsala, Sweden
| | - Y Luo
- Joint Laboratory for Veterinary Microbiology between SVA and HVRI, Uppsala, Sweden.,Division of High-consequence Swine Viral Diseases, Harbin Veterinary Research Institute (HVRI), Chinese Academy of Agricultural Sciences, Harbin, China
| | - F Accensi
- Centre de Recerca en Sanitat Animal (CReSA) - Institut de Recerca i Tecnologia Agroalimentàries (IRTA), Barcelona, Spain.,Departament de Sanitat i Anatomia Animals, Facultat de Veterinària (UAB), Barcelona, Spain
| | - L Ganges
- Centre de Recerca en Sanitat Animal (CReSA) - Institut de Recerca i Tecnologia Agroalimentàries (IRTA), Barcelona, Spain
| | - F Rodríguez
- Centre de Recerca en Sanitat Animal (CReSA) - Institut de Recerca i Tecnologia Agroalimentàries (IRTA), Barcelona, Spain.,Departament de Sanitat i Anatomia Animals, Facultat de Veterinària (UAB), Barcelona, Spain
| | - H Shan
- Qingdao Agricultural University, Qingdao, China
| | - K Ståhl
- National Veterinary Institute (SVA), Uppsala, Sweden.,The OIE Collaborating Centre for the Biotechnology-based Diagnosis of Infectious Diseases in Veterinary Medicine, Uppsala, Sweden
| | - H-J Qiu
- Joint Laboratory for Veterinary Microbiology between SVA and HVRI, Uppsala, Sweden.,Division of High-consequence Swine Viral Diseases, Harbin Veterinary Research Institute (HVRI), Chinese Academy of Agricultural Sciences, Harbin, China
| | - S Belák
- National Veterinary Institute (SVA), Uppsala, Sweden.,The OIE Collaborating Centre for the Biotechnology-based Diagnosis of Infectious Diseases in Veterinary Medicine, Uppsala, Sweden.,Department of Biomedical Sciences and Veterinary Public Health (BVF), Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
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Wu Y, Zhang JF, Xu T, Xu L, Qiao J, Liu F, Shan H, Jiang X. Identification of therapeutic targets for childhood severe asthmatics with DNA microarray. Allergol Immunopathol (Madr) 2016; 44:76-82. [PMID: 25979195 DOI: 10.1016/j.aller.2015.03.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 03/10/2015] [Accepted: 03/24/2015] [Indexed: 12/21/2022]
Abstract
BACKGROUND In this study, we aimed to discover potential gene targets for treating childhood asthmatics. METHODS With the microarray data downloaded from Gene Expression Omnibus (GEO) database, we explored the common differentially expressed genes (DEGs) in children with severe asthma and mild asthma (SA vs. MA) or healthy controls (SA vs. HC). Then we performed hierarchical clustering, function and pathway enrichment analysis for the common DEGs. RESULTS A total of 81 genes were identified to be differentially expressed in SA vs. MA and SA vs. HC group. Hierarchical clustering of the 81 DEGs could crudely separate the SA, MA and healthy individuals. The overrepresented GO terms of the common DEGs were related with lipid biosynthetic process (21.74%), pigment biosynthetic process (13.04%) and nucleoside monophosphate metabolic process (13.04%). Only one pathway was significantly enriched, which was the antigen processing and presentation pathway involved with CD4 and RFX gene. CONCLUSIONS The antigen processing and presentation pathway and lipid biosynthetic process may play roles in the pathogenesis of severe asthma. CD4 and RFX provide a therapeutic possibility for childhood asthma.
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Zeng P, Liu J, Wang J, Dong X, Li J, Bi X, Ma H, Wen X, He M, Liu Y, Ness P, Shan H. Parallel enzyme-linked immunosorbent assay screening for human immunodeficiency virus among blood donors in five Chinese blood centres: a retrospective analysis. Transfus Med 2015; 25:259-64. [PMID: 26104756 DOI: 10.1111/tme.12217] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Revised: 06/01/2015] [Accepted: 06/04/2015] [Indexed: 11/27/2022]
Abstract
AIMS To evaluate the strategy of parallel screening with different enzyme-linked immunosorbent assays (ELISA) among Chinese blood donors. BACKGROUND Parallel screening with ELISA has been the main strategy to detect human immunodeficiency virus (HIV) in blood donations in China for more than a decade. The performance of the strategy should be analysed. METHODS A total of 821,927 donations collected from five Chinese blood centres in 2008-2010 were tested using two third-generation ELISAs by different manufacturers licenced and confirmed by the Western blot (WB) in this study. The confirmatory positive predictive values (PPV), false positive rates (FPR), false negative rates (FNR) and potential risks for transfusion resulting from single or sequential ELISA screening were evaluated. RESULTS A total of 5318 (0·647%) of donations screened HIV reactive and were discarded. WB confirmatory results on 1668 available samples suggested that PPVs for dual ELISA, one round ELISA reactive and grey zone samples were 75·1, 0·7 and 0·5%, respectively. Eight out of 1124 one round ELISA reactive and 1 out of 195 grey zone samples were WB confirmed positive. All but one ELISA assay displayed comparable PPVs but variable FPRs and FNRs that differed by blood centre. CONCLUSIONS In the absence of nucleic acid testing (NAT), parallel ELISA screening prevented a substantial number of HIV infected donations from entering the Chinese blood supply. However, the loss of false positive donors should be re-evaluated especially given the frequently reported blood supply shortage in China.
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Affiliation(s)
- P Zeng
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Chengdu, China
| | - J Liu
- Department of Pathology, Johns Hopkins University, Baltimore, Maryland, USA
| | - J Wang
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Chengdu, China
| | - X Dong
- Department of Yunnan, Yunnan Blood Center, Yunnan, China
| | - J Li
- Department of Guangxi, Guangxi Blood Center, Guangxi, China
| | - X Bi
- Department of Xinjiang, Xinjiang Blood Center, Urumqi, China
| | - H Ma
- Department of Luoyang, Luoyang Blood Center, Urumqi, China
| | - X Wen
- Department of Mianyang, Mianyang Blood Center, Mianyang, China
| | - M He
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Chengdu, China
| | - Y Liu
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Chengdu, China
| | - P Ness
- Department of Pathology, Johns Hopkins University, Baltimore, Maryland, USA
| | - H Shan
- Stanford School of Medicine, Stanford University, Stanford, California, USA
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Bai Z, Xie H, You Q, Pickerill S, Zhang Y, Li T, Geng J, Hu L, Shan H, Di B. Isothermal cross-priming amplification implementation study. Lett Appl Microbiol 2014; 60:205-9. [DOI: 10.1111/lam.12342] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 10/16/2014] [Accepted: 10/17/2014] [Indexed: 11/28/2022]
Affiliation(s)
- Z. Bai
- Guangzhou Center for Disease Control and Prevention; Guangzhou Guangdong China
| | - H. Xie
- Guangzhou Center for Disease Control and Prevention; Guangzhou Guangdong China
| | - Q. You
- Ustar Biotechnologies (Hangzhou) Co., Ltd.; Hangzhou Zhejiang China
| | - S. Pickerill
- Ustar Biotechnologies (Hangzhou) Co., Ltd.; Hangzhou Zhejiang China
| | - Y. Zhang
- Guangzhou Center for Disease Control and Prevention; Guangzhou Guangdong China
| | - T. Li
- Guangzhou Center for Disease Control and Prevention; Guangzhou Guangdong China
| | - J. Geng
- Guangzhou Center for Disease Control and Prevention; Guangzhou Guangdong China
| | - L. Hu
- Ustar Biotechnologies (Hangzhou) Co., Ltd.; Hangzhou Zhejiang China
| | - H. Shan
- ADICON Clinical Laboratory, Inc.; Hangzhou Zhejiang China
| | - B. Di
- Guangzhou Center for Disease Control and Prevention; Guangzhou Guangdong China
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Qin J, Huang SH, Yan RH, Dong YX, Shan H. CT findings of anomalous systemic artery to the left lower lobe: comparison with pulmonary sequestration in the left lower lobe. Clin Radiol 2014; 69:e485-90. [PMID: 25240566 DOI: 10.1016/j.crad.2014.08.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2014] [Revised: 08/04/2014] [Accepted: 08/07/2014] [Indexed: 11/30/2022]
Abstract
AIM To analyse and compare CT findings of anomalous systemic artery to the left lower lobe (ASALLL) and pulmonary sequestration (PS) in the left lower lobe (LLL). MATERIALS AND METHODS The present study cohort comprised 16 patients with ASALLL and 25 patients with PS in the LLL confirmed by surgical and pathological findings. Medical records and CT images were reviewed retrospectively. RESULTS Cough and sputum were more common in PS (84% and 60%, respectively) than in ASALLL (25% and 12.5%, respectively; p < 0.05). Haemoptysis was more common in ASALLL (100%) than in PS (24%; p < 0.05). The frequency of ground-glass opacity (GGO), normal bronchial distribution, dilated left inferior pulmonary veins, and absence of the interlobar artery distal to the origin of the superior segmental artery in the LLL differed significantly between ASALLL and PS. A mass was less common in ASALLL (0%) than in PS (88%; p < 0.01). The mean diameters of the anomalous artery (12.10 ± 1.49 mm) and left inferior pulmonary veins (13.20 ± 2.19 mm) in ASALLL were significantly larger than those (6.73 ± 2.59 mm, 10.04 ± 1.55 mm) in PS. The threshold diameters of the anomalous artery and left inferior pulmonary vein for ASALLL were 9.75 and 11.75 mm, respectively. The presence of an anomalous artery arising from the thoracic aorta was not different between ASALLL (100%) and PS (72%). CONCLUSION The following imaging features favour ASALLL over PS in the LLL: a larger anomalous systemic artery arising from the thoracic aorta, dilated left inferior pulmonary veins, absence of the interlobar artery distal to the origin of the superior segmental artery, normal bronchial distribution, and GGO in the LLL.
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Affiliation(s)
- J Qin
- Department of Radiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.
| | - S-H Huang
- Division of Cardiothoracic Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - R-H Yan
- Department of Radiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Y-X Dong
- Department of Radiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - H Shan
- Department of Radiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
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Zhang Z, Liang X, Gao L, Ma H, Liu X, Pan Y, Yan W, Shan H, Wang Z, Chen YH, Ma C. TIPE1 induces apoptosis by negatively regulating Rac1 activation in hepatocellular carcinoma cells. Oncogene 2014; 34:2566-74. [PMID: 25043299 DOI: 10.1038/onc.2014.208] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 04/29/2014] [Accepted: 05/21/2014] [Indexed: 12/29/2022]
Abstract
TIPE1 (tumor necrosis factor-α-induced protein 8-like 1 or TNFAIP8L1) is a newly identified member of the TIPE (TNFAIP8) family, which play roles in regulating cell death. However, the biologic functions of TIPE1 in physiologic and pathologic conditions are largely unknown. Here, we report the roles of TIPE1 in hepatocellular carcinoma (HCC). Evaluated by immunohistochemical staining, HCC tissues showed significantly downregulated TIPE1 expression compared with adjacent non-tumor tissues, which positively correlated with tumor pathologic grades and patient survival. Using a homograft tumor model in Balb/c mice, we discovered that TIPE1 significantly diminished the growth and tumor weight of murine liver cancer homografts. Consistently, TIPE1 inhibited both cell growth and colony formation ability of cultured HCC cell lines, which was further identified to be due to TIPE1-inducing apoptosis in a caspase-independent, necrostatin-1 (Nec-1)-insensitive manner. Furthermore, mechanistic investigations revealed that TIPE1 interacted with Rac1, and inhibited the activation of Rac1 and its downstream p65 and c-Jun N-terminal kinase pathway. Moreover, overexpression of constitutively active Rac1 partially rescued the apoptosis induced by TIPE1, and Rac1 knockdown significantly restored the deregulated cell growth induced by TIPE1 small interfering RNA. Our findings revealed that TIPE1 induced apoptosis in HCC cells by negatively regulating Rac1 pathway, and loss of TIPE1 might be a new prognostic indicator for HCC patients.
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Affiliation(s)
- Z Zhang
- Key Laboratory for Experimental Teratology of Ministry of Education and Department of Immunology, Shandong University School of Medicine, Shandong, People's Republic of China
| | - X Liang
- Key Laboratory for Experimental Teratology of Ministry of Education and Department of Immunology, Shandong University School of Medicine, Shandong, People's Republic of China
| | - L Gao
- Key Laboratory for Experimental Teratology of Ministry of Education and Department of Immunology, Shandong University School of Medicine, Shandong, People's Republic of China
| | - H Ma
- Key Laboratory for Experimental Teratology of Ministry of Education and Department of Immunology, Shandong University School of Medicine, Shandong, People's Republic of China
| | - X Liu
- Key Laboratory for Experimental Teratology of Ministry of Education and Department of Immunology, Shandong University School of Medicine, Shandong, People's Republic of China
| | - Y Pan
- Key Laboratory for Experimental Teratology of Ministry of Education and Department of Immunology, Shandong University School of Medicine, Shandong, People's Republic of China
| | - W Yan
- Key Laboratory for Experimental Teratology of Ministry of Education and Department of Immunology, Shandong University School of Medicine, Shandong, People's Republic of China
| | - H Shan
- Key Laboratory for Experimental Teratology of Ministry of Education and Department of Immunology, Shandong University School of Medicine, Shandong, People's Republic of China
| | - Z Wang
- Department of Pathology and Laboratory Medicine, University of Pennsylvania School of Medicine, Philadelphia, PA, USA
| | - Y H Chen
- Department of Pathology and Laboratory Medicine, University of Pennsylvania School of Medicine, Philadelphia, PA, USA
| | - C Ma
- Key Laboratory for Experimental Teratology of Ministry of Education and Department of Immunology, Shandong University School of Medicine, Shandong, People's Republic of China
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Schuring A, Kiesel L, Gotte M, Cao MZ, Chan RWS, Yeung WSB, Yamagata Y, Asada H, Tamura H, Sugino N, Jin X, Jiang Y, Shen X, Liu H, Zhu L, Shan H, Hu Y, Sun H, Yan G, Tapia-Pizarro A, Archiles S, Argandona F, Devoto L, Miyazaki K, Maruyama T, Masuda H, Oda H, Hida N, Uchida H, Yoshimura Y, Jiang Y, Shen X, Liu H, Zhen X, Sun H, Hu Y, Yan G. Session 59: Endometrium. Hum Reprod 2013. [DOI: 10.1093/humrep/det192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Cai M, Zhu K, Huang W, Meng X, Zhou B, Zeng Z, Guo Y, Shan H. Predictive factors for improving thrombocytopenia and risk factors for complications after partial splenic embolization in live cirrhosis patients. J Vasc Interv Radiol 2013. [DOI: 10.1016/j.jvir.2013.01.177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Abstract
Abstract
An experimental study of melt spinning and cold drawing of polyethylene and its Dow Chemical INSITEØ catalyst octene copolymers was carried out. The structure and morphology of both melt spun and cold drawing fibers were investigated using wide angle x-ray diffraction (WAXD), small angle x-ray scattering (SAXS), scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and birefringence. Up to 5.9 mol.% octene, the fibers exhibit only the Bunn orthorhombic crystal structure. Fibers with 9.7 mol.% and 13.3 mol.% octene, whose DSC crystallinity is 0.23 and below, have an additional reflection at about 0.45nm. The Hermans-Stein orientation factors for the melt spun fibers were determined and correlated with spinline stress. Cold drawn polyethylene fibers exhibited additional reflection at 0.45, 0.38 and 0.35nm which may be associated with the Tanaka-Seto et al. monoclinic unit cell. The copolymers contained a decreased monoclinic level which disappears at about 5.9 mol.%. However, a broad reflection at 0.45nm, reappears at 9.7 mol.% octene. This reflection is also present at the 13.3 mol.% level. It is surmised that a pseudohexagonal or mesomorphic structure is developing. The Hermans-Stein orientation factors were determined for the drawn fibers as a function of cold draw ratio. Drawing results in high crystalline orientation and fibrillation for polyethylene fibers. For copolymers, with higher octene content, the fibrillation decreases.
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Affiliation(s)
- H. Shan
- Institute of Polymer Engineering, University of Akron, Akron OH, USA
| | - J. L. White
- Institute of Polymer Engineering, University of Akron, Akron OH, USA
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Lü H, Zou Y, Deng R, Shan H. Extraction, Purification and Antiradical Activities of Alpinetin and Cardamomin from Alpinia katsumadai Hayata. ACTA ACUST UNITED AC 2013. [DOI: 10.14233/ajchem.2013.15046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Shan H, Muhajarine N, Loptson K, Jeffery B. Building social capital as a pathway to success: community development practices of an early childhood intervention program in Canada. Health Promot Int 2012. [DOI: 10.1093/heapro/das063] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Hagiwara H, Shan H, Masaki T, Ikeda M, Shimizu T, Matsumura K, Saito F. T.P.41 The role of the transcriptional factor Pax3 on myogenesis and the effect on the expression of myogenic regulatory factors. Neuromuscul Disord 2012. [DOI: 10.1016/j.nmd.2012.06.206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Qin J, Xu J, Dong Y, Tang W, Wu B, An Y, Shan H. High-resolution CT findings of pulmonary infections after orthotopic liver transplantation in 453 patients. Br J Radiol 2012; 85:e959-65. [PMID: 22993384 DOI: 10.1259/bjr/26230943] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES The objective of this study was to review the high-resolution CT (HRCT) findings in patients with pulmonary infection after orthotopic liver transplantation (OLT) and to determine distinguishing findings among the various types of infection. METHODS This study included 453 consecutive liver transplant recipients with pulmonary infection, on whom HRCT of the chest was performed within 24 h of the beginning of symptoms and for whom proven diagnosis had taken place within 1 week of the onset of symptoms. Two radiologists analysed the CT images; final decisions regarding the findings were reached by consensus. RESULTS Bacterial and viral pneumonia made up the bulk of infections (63.4% and 29.4%, respectively), followed by fungal infiltrates (24.5%). Large nodules were most common in patients with fungal pneumonia, having been seen in 38 (54%) of the 70 patients with fungal pneumonia, 22 (10%) of 220 with bacterial pneumonia (p=0.0059) and 6 (8%) of 78 with viral pneumonia (p=0.0011). The halo sign was also more frequent in patients with fungal pneumonia, having been seen in 38 (54%) of the 70 patients with fungal pneumonia, 17 (8%) of 220 with bacterial pneumonia (p=0.0026) and 7 (9%) of 78 with viral pneumonia (p=0.0015). There was no statistically significant difference in the prevalence of the other HRCT patterns including air-space consolidation, ground-glass attenuation and small nodules among bacterial, viral and fungal infections (all p>0.05). CONCLUSION The presence of large nodules with the halo sign is most suggestive of fungal infection after OLT. Other HRCT patterns are not helpful in distinguishing among the various types of infection seen in liver transplant recipients.
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Affiliation(s)
- J Qin
- Department of Radiology, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
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Qin J, Liu LY, Fang Y, Zhu JM, Wu Z, Zhu KS, Zhang JS, Shan H. 320-detector CT coronary angiography with prospective and retrospective electrocardiogram gating in a single heartbeat: comparison of image quality and radiation dose. Br J Radiol 2012; 85:945-51. [PMID: 22745204 DOI: 10.1259/bjr/29901700] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES To compare the image quality, radiation dose and diagnostic accuracy of 320-detector CT coronary angiography with prospective and retrospective electrocardiogram (ECG) gating in a single heartbeat. METHODS Two independent reviewers separately scored image quality of coronary artery segment for 480 cardiac CT studies in a prospective group and a retrospective group (240 patients with a heart rate <65 beats per minute in each group). The two groups matched well for clinical characteristics and CT parameters. There was good agreement for image quality scores of coronary artery segment between the independent reviewers (κ=0.73). Of the 7023 coronary artery segments, the image quality scores of the prospective group and retrospective group were not significantly different (p>0.05). The mean radiation dose was 10.0 ± 3.5 mSv (range 6.2-21.6 mSv) for prospective ECG gating at 65-85% of R-R interval (the interval between the R-wave of one heartbeat to the R-wave of the next). The mean radiation dose for retrospective ECG-triggered modulated scans was 23.2 ± 3.4 mSv (range 17-27.4 mSv). The mean radiation dose was 57% lower for prospective gating than for retrospective gating (p<0.01). RESULTS Compared with coronary angiography, the results for prospective vs retrospective ECG gating were 92% vs 90% for sensitivity (p=0.23), 89% vs 91% for specificity (p=0.19), 90% vs 93% for positive predictive value (p=0.25) and 92% vs 95% for negative predictive value (p=0.21) for lesions with ≥50% stenosis, respectively. CONCLUSION 320-detector CT coronary angiography performed with prospective ECG gating has similar subjective image quality scores, but a 57% lower radiation dose than retrospective ECG gating in a single heartbeat.
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Affiliation(s)
- J Qin
- Department of Radiology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China.
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Guo N, Wang J, Ness P, Yao F, Bi X, Li J, Yun Z, Guo X, Huang Y, Dong X, Tiemuer MHL, He W, Ma H, Huang M, Liu J, Wright DJ, Nelson K, Shan H. First-time donors responding to a national disaster may be an untapped resource for the blood centre. Vox Sang 2012; 102:338-44. [PMID: 21988212 DOI: 10.1111/j.1423-0410.2011.01557.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND On 12 May 2008, a severe earthquake struck Sichuan in China. Many people donated blood for the first time, leading us to question whether these donors might become repeat donors in the future. The return pattern of post-earthquake first-time donors (PEFTD) was compared with that of first-time donors (FTD) in a comparable period. METHODS Demographic characteristics, transfusion-transmissible infection rates and 1-year return rates were compared between 5147 PEFTD (5/13-5/19, 2008) and 3176 FTD (5/13-5/19, 2009) from five Chinese blood centres using chi-squared tests. Adjusted logistic regression was used to detect earthquake effect on donor return. RESULTS Post-earthquake first-time donors were more frequently between 26 and 45 years, men, and better educated compared with the control group. Slightly higher but not statistically significant increased rates of hepatitis B virus surface antigen (HBsAg) (0·87% vs. 0·50%, P=0·054), hepatitis C virus (HCV) (0·70% vs. 0·63%, P=0·414), syphilis (0·9% vs. 0·7%, P=0·489) and lower rates of human immunodeficiency virus (HIV) (0·31% vs. 0·60%, P=0·078) reactivity were detected for PEFTD. The 1-year return rate for PEFTD was significantly lower than that of the controls (8·0% vs. 13·0%, P<0·001). After adjusting for demographic factors, donation volume and sites, the PEFTD were less likely to return in 1 year than the controls (OR: 0·520; 95% CI: 0·442, 0·611). CONCLUSION Post-earthquake first-time donors may be less likely to donate again without continuing motivation strategies. Further studies on PEFTD's lack of motivation to return for donation are needed to design recruitment strategies to convert PEFTD to become repeat donors to continuously replenish the blood supply.
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Affiliation(s)
- N Guo
- Department of Epidemiology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA.
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Qin J, Fang Y, Dong Y, Zhu K, Wu B, An Y, Shan H. Radiological and clinical findings of 25 patients with invasive pulmonary aspergillosis: retrospective analysis of 2150 liver transplantation cases. Br J Radiol 2012; 85:e429-35. [PMID: 22496071 DOI: 10.1259/bjr/39784231] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
OBJECTIVE The purpose of this study was to evaluate the radiological and clinical findings of invasive pulmonary aspergillosis (IPA) after liver transplantation. METHODS This study included 25 consecutive liver transplant recipients with histologically confirmed IPA after liver transplantation. Radiological examinations performed for diagnosis were available in all patients. Clinical findings and changes in clinical response and radiological findings after treatment were also evaluated. RESULTS 3 main radiological findings were identified: nodules, 64% (16/25); masses, 36% (9/25); and consolidations in a patchy pattern, 20% (5/25). A tree-in-bud pattern was found in 12% (3/25) of patients. In 8 (32%) of 25 patients, we found a combination of 2 or more of these signs: 5 (20%) patients presented with concurrent nodules accompanied by patchy consolidations and/or tree-in-bud, and 3 (12%) patients showed masses accompanied by large consolidations. A halo sign was observed in 20 (80%) of 25 patients. Hypodense sign and cavitary lesions were encountered in 17 (68%) of 25 patients. Follow-up radiological findings after treatment showed improvement in 18 patients, no change in 4 patients and progression in 3 patients. There were three aspergillosis-associated deaths during the follow-up period. The onset time of IPA was a median of 31 days after transplantation. The most common symptom at diagnosis was fever (n=15). None of the 25 patients had leukopaenia at the time of the diagnosis of IPA. CONCLUSIONS The most common radiological findings of IPA after liver transplantation are multiple nodules with or without halo sign, masses and consolidations, which usually appear about 1 month after transplantation.
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Affiliation(s)
- J Qin
- Department of Radiology/Institute of Interventional Radiology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
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Lu Y, Shan H, Pan Z, Cai B, Zhang Y, Yang B. miRNAs and cardiac arrhythmogenesis: role in atrial fibrillation. Heart 2011. [DOI: 10.1136/heartjnl-2011-300867.107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Shiirevnyamba A, Takahashi T, Shan H, Ogawa H, Yano S, Kanayama H, Izumi K, Uehara H. Enhancement of osteoclastogenic activity in osteolytic prostate cancer cells by physical contact with osteoblasts. Br J Cancer 2011; 104:505-13. [PMID: 21206493 PMCID: PMC3049567 DOI: 10.1038/sj.bjc.6606070] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND The interaction between prostate cancer cells and osteoblasts is critical for the development of bone metastasis. Metastatic cancer cells may physically contact osteoblasts in the bone microenvironment; however, the biological significance of this interaction is not fully understood. METHODS Human prostate cancer cells (the osteolytic cell line PC-3 and the osteoblastic cell line MDA-PCa 2b) and human osteoblasts (hFOB1.19) were cocultured under two different conditions (bilayer and contact conditions). Differential gene expression profiles of prostate cancer cells were then investigated using microarray analysis. Differentially expressed genes were analysed using RT-PCR and western blotting, and the effect of anti-cadherin neutralising antibodies on their expression was assayed. The osteoclastogenic activity of cells grown under these different conditions was also investigated using an in vitro assay. RESULTS When PC-3 or MDA-PCa 2b cells were cocultured with hFOB1.19 cells under contact conditions, the expression of eight genes was upregulated and that of one gene was downregulated in PC-3 cells compared with gene expression in bilayer culture. No differentially expressed genes were detected in MDA-PCa 2b cells. Four of the eight upregulated genes (interleukin-1β (IL-1β), cyclooxygenase-2 (COX-2), IL-6 and the third component of complement (C3)) have already been reported to participate in osteoclastogenesis. Indeed, a cell lysate of PC-3 cells grown under contact coculture conditions significantly enhanced osteoclastogenesis in vitro (P<0.005). neutralisation of cadherin-11 with a specific antibody inhibited upregulation of COX-2 and C3 mRNA in PC-3 cells. In contrast, neutralisation of N-cadherin induced upregulation of COX-2 mRNA. CONCLUSION Physical contact between osteolytic prostate cancer cells and osteoblasts may upregulate osteoclastogenesis-related gene expression in prostate cancer cells and enhance osteoclastogenesis. Additionally, cadherin-11 and N-cadherin are involved in this process. These data provide evidence supporting new therapies of prostate cancer bone metastasis that target direct cancer-cell-osteoblast cell-cell contact.
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Affiliation(s)
- A Shiirevnyamba
- Department of Molecular and Environmental Pathology, The University of Tokushima Graduate School, 3-18-15, Kuramoto-cho, Tokushima 770-8503, Japan
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Tian F, Wang J, Huang Y, Guo X, Yun Z, Yang T, Nelson K, Schreiber GB, Ness P, Shan H. Psychological and behavioural impacts of the 2008 China earthquake on blood donors. Vox Sang 2010; 99:142-8. [DOI: 10.1111/j.1423-0410.2010.01320.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Liu C, Zhang J, Zhang N, Shan H, Su K, Zhang J, Meng Z, Kong H, Chen Z. Interactions among Proteins of Floral MADS-Box Genes in Basal Eudicots: Implications for Evolution of the Regulatory Network for Flower Development. Mol Biol Evol 2010; 27:1598-611. [DOI: 10.1093/molbev/msq044] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Zhu K, Shan H. Abstract No. 79: Percutaneous transsplenic catheterization of portal vein: Technique and clinical application. J Vasc Interv Radiol 2010. [DOI: 10.1016/j.jvir.2009.12.228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Zhao J, Li J, Li W, Li Y, Shan H, Gong Y, Yang B. Effects of spironolactone on atrial structural remodelling in a canine model of atrial fibrillation produced by prolonged atrial pacing. Br J Pharmacol 2010; 159:1584-94. [PMID: 20082611 DOI: 10.1111/j.1476-5381.2009.00551.x] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND AND PURPOSE Suppression of the renin-angiotensin-aldosterone system can prevent atrial fibrillation (AF) by attenuating atrial structural remodelling but the role of aldosterone in AF prevention has not been investigated thoroughly. We explored whether the aldosterone antagonist, spironolactone, could improve atrial structural remodelling in long-term rapid pacing-induced AF. EXPERIMENTAL APPROACH Three groups of dogs were used, sham-operated, control and spironolactone-treated groups. Dogs in the control and spironolactone groups had right atrial pacing for 6 weeks. The spironolactone group was given spironolactone 1 week before and during the atrial pacing. After 6 weeks of pacing, atrial structural and functional changes were assessed by echocardiography, haemodynamic parameters by cardiac catheterization, histopathological changes by light and electron microscopy and cardiomyocyte apoptosis by TUNEL. Caspase-3, Bcl-2, bax, calpain I, calpastatin, matrix metalloproteinase (MMP)-9 and tissue inhibitors of metalloproteinase (TIMP)-1 were analysed by immunohistochemistry and Western blotting. The inducibility and duration of AF were measured by atrial burst pacing. KEY RESULTS After atrial pacing, the proportion of TUNEL positive cells, myolysis, atrial fibrosis and dilatation were all significantly increased and these changes were inhibited by spironolactone. Spironolactone treatment reversed the increased expression of caspase-3, bax, calpain I and MMP-9 and the decreased level of Bcl-2, calpastatin and TIMP-1, induced by chronic atrial pacing. Also spironolactone prevented the increased inducibility and duration of AF, induced by tachypacing. CONCLUSIONS AND IMPLICATIONS Treatment with spironolactone prevented myocardial apoptosis, myolysis, atrial fibrosis and dilatation, suggesting a possible beneficial effect of aldosterone antagonism on atrial structural remodelling in AF.
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Affiliation(s)
- J Zhao
- Department of Cardiology, The First Affiliated Hospital, Harbin Medical University, Heilongjiang, China
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Zhu K, Meng X, Qian J, Huang M, Li Z, Guan S, Jiang Z, Shan H. Partial splenic embolization for hypersplenism in cirrhosis: a long-term outcome in 62 patients. Dig Liver Dis 2009; 41:411-6. [PMID: 19070555 DOI: 10.1016/j.dld.2008.10.005] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.3] [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] [Received: 07/07/2008] [Revised: 09/28/2008] [Accepted: 10/08/2008] [Indexed: 12/11/2022]
Abstract
BACKGROUND Although partial splenic embolization (PSE) has been widely used for treatment of leucocytopaenia and thrombocytopaenia in cirrhosis, only few studies on the correlation between splenic infarction rate and long-term outcome of partial splenic embolization have been reported so far. AIM To evaluate long-term results of partial splenic embolization with different infarction rates in cirrhotic patients with hypersplenism. METHODS Sixty-two consecutive patients with hypersplenism in cirrhosis received partial splenic embolization. According to the splenic infarction rate after partial splenic embolization, the patients were divided into three groups: more than 70% in group A (n=12), 50-70% in group B (n=34), and less than 50% in group C (n=16). The post-partial splenic embolization following-up time was 5 years. RESULTS Before partial splenic embolization, there were no significant differences among the three groups with respect to sex, age, splenic volume, Child-Pugh class, oesophageal varices, and peripheral blood cell counts. After partial splenic embolization, the short- and long-term outcomes of leucocyte and platelet counts showed significant difference among the three groups (P<0.001). In groups A and B, the leucocyte and platelet counts after partial splenic embolization remained significantly higher than those before partial splenic embolization for 2 weeks to 5 years (P<0.05), the post-partial splenic embolization leucocyte and platelet counts was even higher in group A than in group B; while in group C, leucocyte and platelet count improvement only lasted for 6 months after partial splenic embolization. No significant changes were observed concerning blood red cell counts and liver function parameters after partial splenic embolization among the three groups. Severe complications occurred in six patients (50%) in group A and three patients (8.8%) in group B (P<0.05), while in group C, no severe complications developed. CONCLUSIONS In partial splenic embolization, the splenic infarction rate should be limited to 50%-70% in order to ensure the long-term efficacy in alleviating hypersplenism and reduce complications.
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Affiliation(s)
- K Zhu
- Department of Radiology, the Third Affiliated Hospital, Sun Yat-sen University, Guangdong province, China
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Shan H, Wang HY, Song CY, Wang F. Kinetics and mechanism of oxidation of 2-Aminoethanol and 3-Amino-1-propanol by diperiodatoargentate(III) in alkaline medium. JICS 2009. [DOI: 10.1007/bf03245849] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Gururajan G, Shan H, Lickfield G, Ogale A. Real‐time wide‐angle X‐ray diffraction during polyethylene blown film extrusion. POLYM ENG SCI 2008. [DOI: 10.1002/pen.21111] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Zhu K, Shan H, Meng X, Pang P, Li Z, Jiang Z. Abstract No. 277: Transportal Intravariceal Sclerotherapy with N-Butyl-2-Cyanoacrylate for Gastric Varices. J Vasc Interv Radiol 2008. [DOI: 10.1016/j.jvir.2007.12.313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Meng X, Shan H, Zhang J, Xu C, Luo L. Abstract No. 205: The Preliminary Study of CT Perfusion for the Graft Hemodynamic Changes after Liver Transplantation. J Vasc Interv Radiol 2008. [DOI: 10.1016/j.jvir.2007.12.228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Abstract
Recruitment of low-risk blood donors in developing countries is challenging. We studied the attitudes towards blood donation in several populations in a city in Western China. A survey of knowledge, attitude and practice was performed including 1280 individuals from eight distinct populations in Urumqi, Xinjiang Uyghur Autonomous Region, China. Included were Han Chinese and Uyghur populations of blood donors, non-donors, injection drug users, students and factory workers. Knowledge about blood donation varied between the groups. Factors motivating blood donation included social pressure, desire to know screening results and altruism. Inhibiting factors included fear of contracting an infection and other adverse health effects, including loss of vitality. Misconceptions about the effects of blood donation are widespread, even among educated persons in Urumqi. Fear of acquiring a serious infection may have been increased by the reports of HIV acquisition during plasma donations in China.
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Affiliation(s)
- N Zaller
- Department of Epidemiology and International Health, Bloomberg, School of Public Health, Johns Hopkins University, Baltimore, MD, USA
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Abstract
Intensive prawn aquaculture in tropical regions is associated with high concentrations of total ammoniacal nitrogen (TAN) as a result of high rates of prawn excretion and feed loading. Excessive TAN can adversely effect productivity and result in adverse impacts on coastal waters. Cultures of indigenous nitrifying bacteria were enriched from intensive prawn aquaculture pond water using continuous and batch enrichment techniques. Cultures were capable of TAN removal over a wide range of initial TAN concentrations - up to 200 mg/l. Cultures were immobilized onto porous clay pellets to enhance cell density and applied to culture medium and TAN-augmented pond water under aerobic conditions to determine TAN removal proficiency. Immobilized cultures were able to achieve a high TAN removal proficiency in pond water--even at a low density of 0.1 pellet per liter. A concentration of less than 0.5 mg TAN/l could be maintained under a fed-batch condition of 3.2 mg TAN/l per day, after an initial 2-day lag phase. A simplified and effective culture enrichment process was developed for culture immobilization onto pellets using TAN-augmented pond water. Overall, pellet immobilization of indigenous nitrifying bacteria represents a potentially effective TAN control system for prawn aquaculture in low-cost, but intensive tropical prawn farms.
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Affiliation(s)
- H Shan
- Department of Chemical and Environmental Engineering, National University of Singapore
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