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Kuil LE, Chauhan RK, de Graaf BM, Cheng WW, Kakiailatu NJM, Lasabuda R, Verhaeghe C, Windster JD, Schriemer D, Azmani Z, Brooks AS, Edie S, Reeves RH, Eggen BJL, Shepherd IT, Burns AJ, Hofstra RMW, Melotte V, Brosens E, Alves MM. ATP5PO levels regulate enteric nervous system development in zebrafish, linking Hirschsprung disease to Down Syndrome. Biochim Biophys Acta Mol Basis Dis 2024; 1870:166991. [PMID: 38128843 DOI: 10.1016/j.bbadis.2023.166991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 12/09/2023] [Accepted: 12/11/2023] [Indexed: 12/23/2023]
Abstract
Hirschsprung disease (HSCR) is a complex genetic disorder characterized by the absence of enteric nervous system (ENS) in the distal region of the intestine. Down Syndrome (DS) patients have a >50-fold higher risk of developing HSCR than the general population, suggesting that overexpression of human chromosome 21 (Hsa21) genes contribute to HSCR etiology. However, identification of responsible genes remains challenging. Here, we describe a genetic screening of potential candidate genes located on Hsa21, using the zebrafish. Candidate genes were located in the DS-HSCR susceptibility region, expressed in the human intestine, were known potential biomarkers for DS prenatal diagnosis, and were present in the zebrafish genome. With this approach, four genes were selected: RCAN1, ITSN1, ATP5PO and SUMO3. However, only overexpression of ATP5PO, coding for a component of the mitochondrial ATPase, led to significant reduction of ENS cells. Paradoxically, in vitro studies showed that overexpression of ATP5PO led to a reduction of ATP5PO protein levels. Impaired neuronal differentiation and reduced mitochondrial ATP production, were also detected in vitro, after overexpression of ATP5PO in a neuroblastoma cell line. Finally, epistasis was observed between ATP5PO and ret, the most important HSCR gene. Taken together, our results identify ATP5PO as the gene responsible for the increased risk of HSCR in DS patients in particular if RET variants are also present, and show that a balanced expression of ATP5PO is required for normal ENS development.
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Affiliation(s)
- L E Kuil
- Department of Clinical Genetics, Erasmus University Medical Center Rotterdam - Sophia Children's Hospital, Rotterdam, the Netherlands
| | - R K Chauhan
- Department of Clinical Genetics, Erasmus University Medical Center Rotterdam - Sophia Children's Hospital, Rotterdam, the Netherlands
| | - B M de Graaf
- Department of Clinical Genetics, Erasmus University Medical Center Rotterdam - Sophia Children's Hospital, Rotterdam, the Netherlands
| | - W W Cheng
- Department of Clinical Genetics, Erasmus University Medical Center Rotterdam - Sophia Children's Hospital, Rotterdam, the Netherlands
| | - N J M Kakiailatu
- Department of Clinical Genetics, Erasmus University Medical Center Rotterdam - Sophia Children's Hospital, Rotterdam, the Netherlands
| | - R Lasabuda
- Department of Clinical Genetics, Erasmus University Medical Center Rotterdam - Sophia Children's Hospital, Rotterdam, the Netherlands
| | - C Verhaeghe
- Department of Clinical Genetics, Erasmus University Medical Center Rotterdam - Sophia Children's Hospital, Rotterdam, the Netherlands
| | - J D Windster
- Department of Clinical Genetics, Erasmus University Medical Center Rotterdam - Sophia Children's Hospital, Rotterdam, the Netherlands; Department of Pediatric Surgery, Erasmus University Medical Center Rotterdam, Sophia's Children's Hospital, Rotterdam, the Netherlands
| | - D Schriemer
- Department of Biomedical Sciences of Cells and Systems, Section Molecular Neurobiology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Z Azmani
- Department of Clinical Genetics, Erasmus University Medical Center Rotterdam - Sophia Children's Hospital, Rotterdam, the Netherlands
| | - A S Brooks
- Department of Clinical Genetics, Erasmus University Medical Center Rotterdam - Sophia Children's Hospital, Rotterdam, the Netherlands
| | - S Edie
- Johns Hopkins University School of Medicine, Department of Physiology and McKusick-Nathans Department of Genetic Medicine, Baltimore, MD, United States of America
| | - R H Reeves
- Johns Hopkins University School of Medicine, Department of Physiology and McKusick-Nathans Department of Genetic Medicine, Baltimore, MD, United States of America
| | - B J L Eggen
- Department of Biomedical Sciences of Cells and Systems, Section Molecular Neurobiology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - I T Shepherd
- Department of Biology, Emory University, Atlanta, GA, United States of America
| | - A J Burns
- Department of Clinical Genetics, Erasmus University Medical Center Rotterdam - Sophia Children's Hospital, Rotterdam, the Netherlands; Birth Defects Research Centre, UCL Institute of Child Health, London, United Kingdom; Gastrointestinal Drug Discovery Unit, Takeda Pharmaceuticals, Cambridge, MA, United States of America
| | - R M W Hofstra
- Department of Clinical Genetics, Erasmus University Medical Center Rotterdam - Sophia Children's Hospital, Rotterdam, the Netherlands
| | - V Melotte
- Department of Clinical Genetics, Erasmus University Medical Center Rotterdam - Sophia Children's Hospital, Rotterdam, the Netherlands; Department of Pathology, GROW-school for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, the Netherlands
| | - E Brosens
- Department of Clinical Genetics, Erasmus University Medical Center Rotterdam - Sophia Children's Hospital, Rotterdam, the Netherlands
| | - M M Alves
- Department of Clinical Genetics, Erasmus University Medical Center Rotterdam - Sophia Children's Hospital, Rotterdam, the Netherlands; Department of Pediatric Surgery, Erasmus University Medical Center Rotterdam, Sophia's Children's Hospital, Rotterdam, the Netherlands.
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Zhang L, Meng HY, Zhang YS, Miao HX, Yuan L, Zhou SL, Jiang Y, Wan YC, Cheng WW. [Establishment and preliminary application of organoids in ovarian cancer]. Zhonghua Fu Chan Ke Za Zhi 2023; 58:112-120. [PMID: 36776006 DOI: 10.3760/cma.j.cn112141-20221103-00677] [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: 02/14/2023]
Abstract
Objective: To explore the establishment and application of ovarian cancer organoids. Methods: Fresh ovarian tumor tissues, obtaining from patients underwent surgery in the First Affiliated Hospital of Nanjing Medical University between October 2021 and March 2022, were collected, enzymatic degraded, digested, and embedded into matrigel to establish organoids. A total of 32 ovarian cancer samples were collected. Hematoxylin eosin (HE) staining and immunofluorescence (IF) procedure were used to verify the morphological structure of organoids and their expression of molecular markers. 3D cyto-live or dead assay was used to detecte the live or dead cells in organoids. Carboplatin with a concentration ranging from 5 to 80 μmol/L (5, 10, 20, 40, 80 μmol/L) was added to organoids to calculate the 50% inhibitory concentration (IC50) in different organoids. Results: (1) Organoids from a total of 32 patients were established, of which 18 cases could be passaged stably in the long term in vitro, while 14 could be passaged in the short time. The average amplification time of long-term passage in vitro was over 3 months, and the longest reached 9 months. (2) In HE staining, significant nuclei atypia and local micropapillary structures were observed in organoids. IF staining revealed that ovarian cancer organoids expressed molecular markers similar to primary tumor tissues, such as Pan cytokeratin (Pan-CK), p53, paired box gene 8 (PAX8), and Wilms tumor gene 1 (WT1). (3) In 3D cyto-live or dead assay, a large number of apoptotic cells were observed inside and around the organoids after added carboplatin. The sensitivity to carboplatin varied in 18 organoids could amplify in the long term, with an average IC50 of (29.5±15.8) μmol/L. Moreover, IC50 values of 4 organoids derived from patients received neoadjuvant chemotherapy were much higher than the 14 organoids which did not received neoadjuvant chemotherapy [(48.7±11.3) μmol/L vs (24.0±12.1) μmol/L; t=3.429, P=0.022]. Conclusions: Organoids recapitulate ovarian cancers in vitro and could be stably passaged. Organoids derived from patients received neoadjuvant chemotherapy have higher resistance to carboplatin.
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Affiliation(s)
- L Zhang
- Department of Gynecology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - H Y Meng
- Department of Gynecology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Y S Zhang
- Department of Gynecology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - H X Miao
- Department of Gynecology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - L Yuan
- Department of Gynecology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - S L Zhou
- Department of Gynecology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Y Jiang
- Department of Gynecology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Y C Wan
- Department of Gynecology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - W W Cheng
- Department of Gynecology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
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Sun X, Sun Q, Liu J, Liu SG, Cheng WW. [Six cases of acute toilet cleaners]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2022; 40:941-944. [PMID: 36646490 DOI: 10.3760/cma.j.cn121094-20210629-00309] [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: 01/18/2023]
Abstract
The oral toilet cleaners poisoning can result in devastating gastrointestinal tract injuries with the risk of perforation and/or hemorrhage, and sometimes potentially fatal systemic complications and sequelas. It should be given positive treatment. In this paper, six cases of acute toilet cleaners poisoning were analyzed, and the clinical characteristics and treatment effect were summarized, so as to improve the understanding, diagnosis and treatment level of the disease.
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Affiliation(s)
- X Sun
- Department of Emergency, Zaozhuang Municipal Hospital, Zaozhuang 277101, China
| | - Q Sun
- Department of Emergency, Zaozhuang Municipal Hospital, Zaozhuang 277101, China
| | - J Liu
- Department of Emergency, Zaozhuang Municipal Hospital, Zaozhuang 277101, China
| | - S G Liu
- Department of Emergency, Zaozhuang Municipal Hospital, Zaozhuang 277101, China
| | - W W Cheng
- Department of Emergency, Zaozhuang Municipal Hospital, Zaozhuang 277101, China
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Kuil LE, Chauhan RK, Cheng WW, Hofstra RMW, Alves MM. Zebrafish: A Model Organism for Studying Enteric Nervous System Development and Disease. Front Cell Dev Biol 2021; 8:629073. [PMID: 33553169 PMCID: PMC7859111 DOI: 10.3389/fcell.2020.629073] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 12/23/2020] [Indexed: 12/11/2022] Open
Abstract
The Enteric Nervous System (ENS) is a large network of enteric neurons and glia that regulates various processes in the gastrointestinal tract including motility, local blood flow, mucosal transport and secretion. The ENS is derived from stem cells coming from the neural crest that migrate into and along the primitive gut. Defects in ENS establishment cause enteric neuropathies, including Hirschsprung disease (HSCR), which is characterized by an absence of enteric neural crest cells in the distal part of the colon. In this review, we discuss the use of zebrafish as a model organism to study the development of the ENS. The accessibility of the rapidly developing gut in zebrafish embryos and larvae, enables in vivo visualization of ENS development, peristalsis and gut transit. These properties make the zebrafish a highly suitable model to bring new insights into ENS development, as well as in HSCR pathogenesis. Zebrafish have already proven fruitful in studying ENS functionality and in the validation of novel HSCR risk genes. With the rapid advancements in gene editing techniques and their unique properties, research using zebrafish as a disease model, will further increase our understanding on the genetics underlying HSCR, as well as possible treatment options for this disease.
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Affiliation(s)
- Laura E. Kuil
- Department of Clinical Genetics, Erasmus University Medical Centre, Rotterdam, Netherlands
| | - Rajendra K. Chauhan
- Department of Clinical Genetics, Erasmus University Medical Centre, Rotterdam, Netherlands
| | - William W. Cheng
- Department of Clinical Genetics, Erasmus University Medical Centre, Rotterdam, Netherlands
| | - Robert M. W. Hofstra
- Department of Clinical Genetics, Erasmus University Medical Centre, Rotterdam, Netherlands
- Stem Cells and Regenerative Medicine, University College London (UCL) Great Ormond Street Institute of Child Health, London, United Kingdom
| | - Maria M. Alves
- Department of Clinical Genetics, Erasmus University Medical Centre, Rotterdam, Netherlands
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Ling KJ, Wang YZ, Zhang H, Zhang XY, Yang JJ, Luo CY, Song B, Zhang WX, Deng L, Chen GL, Li YD, Hu QY, Chen Y, Wang X, Zhang J, Ding JX, Ren T, Kang S, Hua KQ, Xiang Y, Cheng WW, Liang ZQ. [Oncologic outcomes of early stage cervical cancer performed operation by different laparoscopic surgical procedures: analysis of clinical data from mutiple centers]. Zhonghua Fu Chan Ke Za Zhi 2020; 55:617-623. [PMID: 32957750 DOI: 10.3760/cma.j.cn112141-20200803-00623] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the oncologic outcomes of different laparoscopic radical hysterectomy. Methods: From January 2011 to December 2014, the laparoscopic operation cases of cervical cancer at stage Ⅰb1, Ⅰb2, Ⅱa1 and Ⅱa2, including the histologic subtypes of squamous-cell carcinoma, adenocarcinoma and adenosquamous carcinoma, were collected in five clinical centers. The data were divided into two groups according to the surgical procedures, that is, modified laparoscopic-vaginal radical hysterectomy (mLVRH) and total laparoscopic radical hysterectomy (TLRH). The overall survival rate (OS), disease-free survival rate (DFS) at 5 years were retrospectively analyzed in this study. Results: There were 674 cases in total, including 377 cases of mLVRH, 297 cases of TLRH. (1) The OS at 5 years: the mLVRH was 96.1% and the TLRH was 92.0%, and the mLVRH was higher than that of TLRH (P=0.010). Stratify analysis, including stage of disease (Ⅰb1 and Ⅱa1), histologic subtypes (squamous-cell carcinoma, adenocarcinoma), lymph node metastasis, revealed that, ① Stage of disease: in stage Ⅰb1, the OS at five years of mLVRH was higher than that in TLRH group (98.6% vs 93.6%, P=0.012). In stage Ⅱa1, there was significant difference between the two groups, the OS at five years of mLVRH and TLRH were 93.6% and 77.6% (P=0.007). ② Histologic subtypes: for the OS at five years of squamous-cell carcinoma, mLVRH and TLRH were 96.1% and 92.3%, and there was significant difference (P=0.046); for adenocarcinoma, the OS at five years were 91.0% and 88.6%, and there was no difference between two groups (P=0.230). ③ Lymph node metastasis: the mLVRH and TLRH with lymph node metastasis, the OS at five years were 98.6% and 96.4%; the mLVRH and TLRH without lymph node metastasis, the OS at five years were 89.3% and 80.8%. There were no significant differences between the two groups,respectively (P=0.156, P=0.093). (2) The DFS at 5 years: there was no significant difference between mLVRH and TLRH (94.1% vs 90.9%, P=0.220). Stratify analysis for stage of disease, the mLVRH group was higher than that in the TLRH group in stage Ⅰb1 (97.0% vs 92.8%, P=0.039). However, for stage Ⅱa1, there was no significant difference between mLVRH and TLRH group (88.2% vs 75.8%, P=0.074). Conclusions: The results of this retrospective study indicated that different laparoscopy surgical procedures had diverse oncologic outcomes. The OS at 5 years of the mLVRH is superior to the TLRH. The DFS at 5 years in Ⅰb1 stage, the mLVRH is higher than the TLRH. Therefore, the modified laparoscopy is still an alternative surgery for early cervical cancer patients when following the principle of no-tumor-exposure.
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Affiliation(s)
- K J Ling
- Department of Obstetrics and Gynecology, the First Hospital Affiliated to Army Medical University, Chongqing 400038, China
| | - Y Z Wang
- Department of Obstetrics and Gynecology, the First Hospital Affiliated to Army Medical University, Chongqing 400038, China
| | - H Zhang
- Department of Gynecology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| | - X Y Zhang
- Department of Gynecology, the Obstetrics and Gynecology Hospital of Fudan University, Shanghai 200011, China
| | - J J Yang
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - C Y Luo
- Department of Gynecology, the Frist Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
| | - B Song
- Department of Obstetrics and Gynecology, the First Hospital Affiliated to Army Medical University, Chongqing 400038, China
| | - W X Zhang
- Department of Obstetrics and Gynecology, the First Hospital Affiliated to Army Medical University, Chongqing 400038, China
| | - L Deng
- Department of Obstetrics and Gynecology, the First Hospital Affiliated to Army Medical University, Chongqing 400038, China
| | - G L Chen
- Department of Obstetrics and Gynecology, the First Hospital Affiliated to Army Medical University, Chongqing 400038, China
| | - Y D Li
- Department of Obstetrics and Gynecology, the First Hospital Affiliated to Army Medical University, Chongqing 400038, China
| | - Q Y Hu
- Department of Obstetrics and Gynecology, the First Hospital Affiliated to Army Medical University, Chongqing 400038, China
| | - Y Chen
- Department of Obstetrics and Gynecology, the First Hospital Affiliated to Army Medical University, Chongqing 400038, China
| | - X Wang
- Department of Obstetrics and Gynecology, the First Hospital Affiliated to Army Medical University, Chongqing 400038, China
| | - J Zhang
- Department of Gynecology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| | - J X Ding
- Department of Gynecology, the Obstetrics and Gynecology Hospital of Fudan University, Shanghai 200011, China
| | - T Ren
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - S Kang
- Department of Gynecology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| | - K Q Hua
- Department of Gynecology, the Obstetrics and Gynecology Hospital of Fudan University, Shanghai 200011, China
| | - Y Xiang
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - W W Cheng
- Department of Gynecology, the Frist Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
| | - Z Q Liang
- Department of Obstetrics and Gynecology, the First Hospital Affiliated to Army Medical University, Chongqing 400038, China
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Yi FF, Cheng WW, Hao YG. [Clinical analysis of seven cases of acute glufosinate poisoning]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2020; 38:225-226. [PMID: 32306701 DOI: 10.3760/cma.j.cn121094-20190529-00219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Yu M, Xiang Y, Ma XX, Xue FX, Feng LM, Wang DB, Huang XH, Zhang Y, Zhang GN, Cao DY, Chen CL, Chen J, Cheng WW, Cui ZM, Di W, Guo HY, Hu LN, Li CZ, Li XM, Liang ZQ, Liu AJ, Liu CD, Meng YG, Shen DH, Wan XP, Wang ZH, Xu L, Yang XS, Zhu GH, Lang JH. [Advices on standards of endometrial cancer screening]. Zhonghua Fu Chan Ke Za Zhi 2020; 55:307-311. [PMID: 32464717 DOI: 10.3760/cma.j.cn112141-20200201-00070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
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Wang L, Lv Y, Zhao YY, Zhang L, Wang YY, Cheng WW. [The attentional bias of emotion in medical workers of emergency department in one hospital and it's relationship with mood state]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2018; 35:688-691. [PMID: 29294523 DOI: 10.3760/cma.j.issn.1001-9391.2017.09.011] [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 study the characteristics of attentional bias to emotional stimulus in medical workers of emergency department and explore the relationship between the emotional Stroop effect and mood states, thus providing a reference to the assessment and intervention of emergency medical workers' mental health. Methods: Two kinds of emotional Stroop tasks with words and pictures and the Profile of Mood States (POMS) were administered to thirty-six medical workers of emergency department and thirty-six medical workers of other departments. Results: The reaction time to negative and positive words and pictures were all higher than the reaction time to neutral stimulus, thus showing the significant Stroop effect in medical workers. The Stroop effect to negative emotional stimulus in medical workers of emergency department was significantly smaller than that in medical workers of other departments, while the difference of Stroop effect to positive stimulus was not significant between the two groups. Correlation analyses revealed that the correlations between Stroop effect size to positive pictures and tension and angry of POMS were all negatively significant (r value was -0.314 and -0.330 respectively) , and the correlation between Stroop effect size to negative pictures and fatigue was negatively significant (r=-0.303) . Conclusions: There is a significant emotional Stroop effect in medical workers. Although the ability of anti-interference to emotional stimulus in medical workers of emergency department was better than medical workers of the other departments, the long-term avoidance to negative emotional stimulus was still has a negative effect on the mood states of individuals.
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Affiliation(s)
- L Wang
- Department of Emergency, Zao zhuang Municipal Hospital, Zaozhuang, 277100, China
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Gui H, Schriemer D, Cheng WW, Chauhan RK, Antiňolo G, Berrios C, Bleda M, Brooks AS, Brouwer RWW, Burns AJ, Cherny SS, Dopazo J, Eggen BJL, Griseri P, Jalloh B, Le TL, Lui VCH, Luzón-Toro B, Matera I, Ngan ESW, Pelet A, Ruiz-Ferrer M, Sham PC, Shepherd IT, So MT, Sribudiani Y, Tang CSM, van den Hout MCGN, van der Linde HC, van Ham TJ, van IJcken WFJ, Verheij JBGM, Amiel J, Borrego S, Ceccherini I, Chakravarti A, Lyonnet S, Tam PKH, Garcia-Barceló MM, Hofstra RMW. Whole exome sequencing coupled with unbiased functional analysis reveals new Hirschsprung disease genes. Genome Biol 2017; 18:48. [PMID: 28274275 PMCID: PMC5343413 DOI: 10.1186/s13059-017-1174-6] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Accepted: 02/17/2017] [Indexed: 12/17/2022] Open
Abstract
Background Hirschsprung disease (HSCR), which is congenital obstruction of the bowel, results from a failure of enteric nervous system (ENS) progenitors to migrate, proliferate, differentiate, or survive within the distal intestine. Previous studies that have searched for genes underlying HSCR have focused on ENS-related pathways and genes not fitting the current knowledge have thus often been ignored. We identify and validate novel HSCR genes using whole exome sequencing (WES), burden tests, in silico prediction, unbiased in vivo analyses of the mutated genes in zebrafish, and expression analyses in zebrafish, mouse, and human. Results We performed de novo mutation (DNM) screening on 24 HSCR trios. We identify 28 DNMs in 21 different genes. Eight of the DNMs we identified occur in RET, the main HSCR gene, and the remaining 20 DNMs reside in genes not reported in the ENS. Knockdown of all 12 genes with missense or loss-of-function DNMs showed that the orthologs of four genes (DENND3, NCLN, NUP98, and TBATA) are indispensable for ENS development in zebrafish, and these results were confirmed by CRISPR knockout. These genes are also expressed in human and mouse gut and/or ENS progenitors. Importantly, the encoded proteins are linked to neuronal processes shared by the central nervous system and the ENS. Conclusions Our data open new fields of investigation into HSCR pathology and provide novel insights into the development of the ENS. Moreover, the study demonstrates that functional analyses of genes carrying DNMs are warranted to delineate the full genetic architecture of rare complex diseases. Electronic supplementary material The online version of this article (doi:10.1186/s13059-017-1174-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Hongsheng Gui
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, China.,Centre for Genomic Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, China
| | - Duco Schriemer
- Department of Neuroscience, section Medical Physiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - William W Cheng
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, China.,Department of Clinical Genetics, Erasmus University Medical Center, PO Box 2040, 3000CA, Rotterdam, The Netherlands
| | - Rajendra K Chauhan
- Department of Clinical Genetics, Erasmus University Medical Center, PO Box 2040, 3000CA, Rotterdam, The Netherlands
| | - Guillermo Antiňolo
- Department of Genetics, Reproduction and Fetal Medicine, Institute of Biomedicine of Seville (IBIS), University Hospital Virgen del Rocío/CSIC/University of Seville, Seville, Spain.,Centre for Biomedical Network Research on Rare Diseases (CIBERER), Seville, Spain
| | - Courtney Berrios
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, USA
| | - Marta Bleda
- Centre for Biomedical Network Research on Rare Diseases (CIBERER), Seville, Spain.,Department of Medicine, School of Clinical Medicine, University of Cambridge, Addenbrooke's Hospital, Cambridge, UK
| | - Alice S Brooks
- Department of Clinical Genetics, Erasmus University Medical Center, PO Box 2040, 3000CA, Rotterdam, The Netherlands
| | - Rutger W W Brouwer
- Erasmus Center for Biomics, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Alan J Burns
- Department of Clinical Genetics, Erasmus University Medical Center, PO Box 2040, 3000CA, Rotterdam, The Netherlands.,Stem Cells and Regenerative Medicine, Birth Defects Research Centre, UCL Institute of Child Health, London, UK
| | - Stacey S Cherny
- Centre for Genomic Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, China
| | - Joaquin Dopazo
- Department of Genetics, Reproduction and Fetal Medicine, Institute of Biomedicine of Seville (IBIS), University Hospital Virgen del Rocío/CSIC/University of Seville, Seville, Spain.,Centre for Biomedical Network Research on Rare Diseases (CIBERER), Seville, Spain
| | - Bart J L Eggen
- Department of Neuroscience, section Medical Physiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | | | - Binta Jalloh
- Department of Biology, Emory University, Atlanta, USA
| | - Thuy-Linh Le
- Laboratory of embryology and genetics of human malformations, INSERM UMR 1163, Institut Imagine, Paris, France.,Department of Genetics, Paris Descartes-Sorbonne Paris Cité University, Hôpital Necker-Enfants Malades (APHP), Paris, France
| | - Vincent C H Lui
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, China
| | - Berta Luzón-Toro
- Department of Genetics, Reproduction and Fetal Medicine, Institute of Biomedicine of Seville (IBIS), University Hospital Virgen del Rocío/CSIC/University of Seville, Seville, Spain.,Centre for Biomedical Network Research on Rare Diseases (CIBERER), Seville, Spain
| | - Ivana Matera
- UOC Genetica Medica, Istituto Gaslini, Genoa, Italy
| | - Elly S W Ngan
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, China
| | - Anna Pelet
- Laboratory of embryology and genetics of human malformations, INSERM UMR 1163, Institut Imagine, Paris, France.,Department of Genetics, Paris Descartes-Sorbonne Paris Cité University, Hôpital Necker-Enfants Malades (APHP), Paris, France
| | - Macarena Ruiz-Ferrer
- Department of Genetics, Reproduction and Fetal Medicine, Institute of Biomedicine of Seville (IBIS), University Hospital Virgen del Rocío/CSIC/University of Seville, Seville, Spain.,Centre for Biomedical Network Research on Rare Diseases (CIBERER), Seville, Spain
| | - Pak C Sham
- Centre for Genomic Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, China
| | | | - Man-Ting So
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, China
| | - Yunia Sribudiani
- Department of Clinical Genetics, Erasmus University Medical Center, PO Box 2040, 3000CA, Rotterdam, The Netherlands.,Department of Biochemistry and Molecular Biology, Faculty of Medicine, Universitas Padjadjaran, Bandung, Indonesia
| | - Clara S M Tang
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, China
| | | | - Herma C van der Linde
- Department of Clinical Genetics, Erasmus University Medical Center, PO Box 2040, 3000CA, Rotterdam, The Netherlands
| | - Tjakko J van Ham
- Department of Clinical Genetics, Erasmus University Medical Center, PO Box 2040, 3000CA, Rotterdam, The Netherlands
| | | | - Joke B G M Verheij
- Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Jeanne Amiel
- Laboratory of embryology and genetics of human malformations, INSERM UMR 1163, Institut Imagine, Paris, France.,Department of Genetics, Paris Descartes-Sorbonne Paris Cité University, Hôpital Necker-Enfants Malades (APHP), Paris, France
| | - Salud Borrego
- Department of Genetics, Reproduction and Fetal Medicine, Institute of Biomedicine of Seville (IBIS), University Hospital Virgen del Rocío/CSIC/University of Seville, Seville, Spain.,Centre for Biomedical Network Research on Rare Diseases (CIBERER), Seville, Spain
| | | | - Aravinda Chakravarti
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, USA
| | - Stanislas Lyonnet
- Laboratory of embryology and genetics of human malformations, INSERM UMR 1163, Institut Imagine, Paris, France.,Department of Genetics, Paris Descartes-Sorbonne Paris Cité University, Hôpital Necker-Enfants Malades (APHP), Paris, France
| | - Paul K H Tam
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, China
| | - Maria-Mercè Garcia-Barceló
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, China.
| | - Robert M W Hofstra
- Department of Clinical Genetics, Erasmus University Medical Center, PO Box 2040, 3000CA, Rotterdam, The Netherlands. .,Stem Cells and Regenerative Medicine, Birth Defects Research Centre, UCL Institute of Child Health, London, UK.
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Cheng WW, Wang XY, Sheng YB, Gong LY, Zhao SM, Liu JM. Finite-temperature scaling of trace distance discord near criticality in spin diamond structure. Sci Rep 2017; 7:42360. [PMID: 28198404 PMCID: PMC5309762 DOI: 10.1038/srep42360] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [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] [Received: 10/19/2016] [Accepted: 01/08/2017] [Indexed: 11/09/2022] Open
Abstract
In this work we explore the quantum correlation quantified by trace distance discord as a measure to analyze the quantum critical behaviors in the Ising-XXZ diamond structure at finite temperatures. It is found that the first-order derivative of the trace distance discord exhibits a maximum around the critical point at finite temperatures. By analyzing the finite-temperature scaling behavior, we show that such a quantum correlation can detect exactly the quantum phase transitions from the entan-gled state in ferrimagnetic phase to an unentangled state in ferrimagnetic phase or to an unentangled state in ferromagnetic phase. The results also indicate that the above two kinds of transitions can be distinguished by the different finite-temperature scaling behaviors. Moreover, we find that the trace distance discord, in contrast to other typical quantum correlations (e.g., concurrence, quantum discord and Hellinger distance), may be more reliable to exactly spotlight the critical points of this model at finite temperatures under certain situations.
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Affiliation(s)
- W W Cheng
- Institute of Signal Processing &Transmission, Nanjing University of Posts and Telecommunication, Nanjing, 210003, China
| | - X Y Wang
- Institute of Signal Processing &Transmission, Nanjing University of Posts and Telecommunication, Nanjing, 210003, China
| | - Y B Sheng
- Institute of Signal Processing &Transmission, Nanjing University of Posts and Telecommunication, Nanjing, 210003, China
| | - L Y Gong
- Institute of Signal Processing &Transmission, Nanjing University of Posts and Telecommunication, Nanjing, 210003, China.,National Laboratory of Solid State Microstructures &Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - S M Zhao
- Institute of Signal Processing &Transmission, Nanjing University of Posts and Telecommunication, Nanjing, 210003, China
| | - J M Liu
- National Laboratory of Solid State Microstructures &Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
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11
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Cheng WW, Zhong XY, Li JL. [Bariumpoisoning and clinical treatment]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2016; 34:868-869. [PMID: 28043288 DOI: 10.3760/cma.j.issn.1001-9391.2016.11.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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Cheng WW, Kong XL, Li JL. [Monitoring and clinical treatment of naphthalene poisoning]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2016; 34:391-392. [PMID: 27514432 DOI: 10.3760/cma.j.issn.1001-9391.2016.05.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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13
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Liu X, Lynch CD, Cheng WW, Landon MB. Lowering the high rate of caesarean delivery in China: an experience from Shanghai. BJOG 2016; 123:1620-8. [DOI: 10.1111/1471-0528.14057] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/08/2016] [Indexed: 11/28/2022]
Affiliation(s)
- X Liu
- Obstetrics Department; International Peace Maternity & Child Health Hospital; Shanghai Jiaotong University; Shanghai China
| | - CD Lynch
- Division of Maternal Fetal Medicine; Department of Obstetrics & Gynaecology; The Ohio State University College of Medicine; Columbus OH USA
| | - WW Cheng
- Obstetrics Department; International Peace Maternity & Child Health Hospital; Shanghai Jiaotong University; Shanghai China
| | - MB Landon
- Division of Maternal Fetal Medicine; Department of Obstetrics & Gynaecology; The Ohio State University College of Medicine; Columbus OH USA
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14
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Cheng WW, Wang DQ, Wang CY, Du H, Wei QW. Microsatellite markers reveal genetic divergence among wild and cultured populations of Chinese sucker Myxocyprinus asiaticus. Genet Mol Res 2016; 15:gmr7581. [PMID: 27173283 DOI: 10.4238/gmr.15027581] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Studies of genetic diversity and genetic population structure are critical for the conservation and management of endangered species. The Chinese sucker Myxocyprinus asiaticus is a vulnerable monotypic species in China, which is at a risk of decline owing to fluctuations in effective population size and other demographic and environmental factors. We screened 11 microsatellite loci in 214 individuals to assess genetic differentiation in both wild and cultured populations. The single extant wild population had a higher number of alleles (13) than the cultured populations (average 7.3). High levels of genetic diversity, expressed as observed and expected heterozygosity (HO = 0.771, HE = 0.748, respectively), were found in both wild and cultured populations. We also report significant differentiation among wild and cultured populations (global FST = 0.023, P < 0.001). Both STRUCTURE analysis and neighbor-joining tree revealed three moderately divergent primary genetic clusters: the wild Yangtze population and the Sichuan population were each identified as an individual cluster, with the remaining populations clustered together. Twenty-two samples collected from the Yangtze River were assigned to the cultured population, demonstrating the efficacy of artificial propagation to avoid drastic reduction in the population size of M. asiaticus. These genetic data support the endangered status of the M. asiaticus and have implications for conservation management planning.
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Affiliation(s)
- W W Cheng
- Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, China.,Wuhan Fisheries Science Research Institute, Wuhan Academy of Agricultural Science & Technology, Wuhan, China
| | - D Q Wang
- Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, China
| | - C Y Wang
- Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, China
| | - H Du
- Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, China
| | - Q W Wei
- Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, China
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15
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Liu X, Chen Y, Zhou Q, Shi H, Cheng WW. Utilization of International Association of Diabetes and Pregnancy Study Groups criteria vs. a two-step approach to screening for gestational diabetes mellitus in Chinese women with twin pregnancies. Diabet Med 2015; 32:367-73. [PMID: 25407306 DOI: 10.1111/dme.12636] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/17/2014] [Indexed: 11/30/2022]
Abstract
AIM To evaluate prevalence and pregnancy outcomes using the International Association of Diabetes and Pregnancy Study Groups (IADPSG) criteria and screening protocol vs. a standard two-step screening approach for gestational diabetes mellitus in Chinese twin pregnancies. METHODS A retrospective cohort study for pregnancies during 2007-2013 was performed in a tertiary hospital in Shanghai, China. Data were abstracted from the medical records of twin pregnancies delivered at the hospital. During the period 2007-2011, this hospital used a two-step approach with a 50 g screening with a cut-off value of ≥ 7.8 mmol/l followed by a 100 g diagnostic oral glucose tolerance test (OGTT) utilizing Carpenter-Coustan criteria. In 2012-2013, the hospital switched to the IADPSG protocol of universal 75 g OGTT. RESULTS Among 1461 twin pregnancies, 643 were screened utilizing IADPSG criteria and 818 using the two-step protocol. Gestational diabetes mellitus was diagnosed more frequently in the IADPSG group than in the two-step group [20.4% and 7.0%, respectively; adjusted odds ratio (aOR) = 3.22; 95% confidence interval (CI) = 2.30-4.52]. During the IADPSG period, the incidence of pre-eclampsia was 38% lower in non-gestational diabetes mellitus affected pregnancies compared with the two-step period (aOR = 0.62; 95% CI = 0.44-0.87). We observed no significant differences in most perinatal outcomes between the two groups. CONCLUSION Compared with a standard two-step approach to screening and diagnosis, the IADPSG screening method resulted in a three-fold increase in the incidence of gestational diabetes mellitus in twin pregnancies, with a 38% lower risk of pre-eclampsia but no significant difference in most perinatal outcomes in non-gestational diabetes mellitus affected pregnancies.
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Affiliation(s)
- X Liu
- Obstetrics Department, International Peace Maternity & Child Health Hospital, Shanghai Jiaotong University, Shanghai, China
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16
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Wu WB, Xu YY, Cheng WW, Wang YX, Liu Y, Huang D, Zhang HJ. Agonist of farnesoid X receptor protects against bile acid induced damage and oxidative stress in mouse placenta--a study on maternal cholestasis model. Placenta 2015; 36:545-51. [PMID: 25747729 DOI: 10.1016/j.placenta.2015.02.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Revised: 01/21/2015] [Accepted: 02/09/2015] [Indexed: 12/20/2022]
Abstract
INTRODUCTION Intrahepatic cholestasis of pregnancy (ICP) is a pregnancy-specific disorder, which is characterized by raised serum bile acid level and potential adverse fetal outcome. Farnesoid X receptor (FXR), also known as a bile acid receptor, was found to be expressed in placenta with low level. Whether activation of FXR by specific agonists could regulate the pathogenesis of ICP is still unclear. METHODS A model of maternal cholestasis was induced by administration of 17α-ethynylestradiol (E2) in pregnant mice for 6 days. We explored the regulatory effect of WAY-362450 (W450), a highly selective and potent FXR agonist on placenta. RESULTS In this study, we demonstrated that administration of E2 increased bile acid levels in mouse serum, liver and amniotic fluid. Bile acid levels were significantly decreased after W450 treatment. W450 protected against the impairment of placentas induced by E2, including severe intracellular edema and apoptosis of trophoblasts. Moreover, W450 significantly induced the expressions of FXR target bile acid transport gene ATP-binding cassette, sub-family B (MDR/TAP), member 11 (Abcb11;Bsep) in placenta. W450 could also attenuate placental oxidative stress and increase the expressions of antioxidant enzymes Prdx1 and Prdx3. DISCUSSION AND CONCLUSION In conclusion, our data demonstrated that FXR agonist W450 modulated bile acid balance and protected against placental oxidative stress. Thus, our results support that potent FXR agonists might represent promising drugs for the treatment of ICP.
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Affiliation(s)
- W B Wu
- Departments of Pathology and Bio-Bank, the International Peace Maternity and Child Health Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200030, China
| | - Y Y Xu
- Departments of Pathology and Bio-Bank, the International Peace Maternity and Child Health Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200030, China
| | - W W Cheng
- Department of Obstetrics and Gynecology, the International Peace Maternity and Child Health Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200030, China
| | - Y X Wang
- Departments of Pathology and Bio-Bank, the International Peace Maternity and Child Health Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200030, China
| | - Y Liu
- Departments of Pathology and Bio-Bank, the International Peace Maternity and Child Health Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200030, China
| | - D Huang
- Department of Obstetrics and Gynecology, the International Peace Maternity and Child Health Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200030, China
| | - H J Zhang
- Departments of Pathology and Bio-Bank, the International Peace Maternity and Child Health Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200030, China.
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Lee LK, Cheung KM, Cheng WW, Ko CH, Lee HHC, Ching CK, Mak CM. A rare cause of severe diarrhoea diagnosed by urine metabolic screening: aromatic L-amino acid decarboxylase deficiency. Hong Kong Med J 2014; 20:161-4. [DOI: 10.12809/hkmj133922] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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18
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Abstract
Background: Lung cancer is known as the top cancer killer in most developed countries. However, there is currently no promising diagnostic or prognostic biomarker for lung cancer. This study aims to discover non-invasive differential markers in the serum of lung cancer patients, to determine the protein identity of the candidate biomarker(s), and to investigate any clinical implication of the biomarker(s) concerned. Methods: Blood specimens were collected from 154 pre-operative patients with lung cancer and 35 healthy blood donors with no evidence of lung cancer. Fractionated serum samples were processed by surface-enhanced laser desorption/ionisation time-of-flight mass spectrometry (MS). Candidate biomarker was identified using sodium dodecyl sulphate polyacrylamide gel electrophoresis and tryptic digestion followed by tandem MS fragmentation analysis, which was subsequently validated with immunoassay. Results: A differential protein with m/z 11.6 kDa was detected and identified as an isoform of human serum amyloid A (SAA). It was significantly increased by 1822% in lung cancer patients when compared with the healthy controls, which gave an area under the receiver operator characteristic curve of 0.88. In addition, the protein was also significantly elevated by 77% in lung cancer patients with survival <5 years when compared with patients with survival ⩾5 years. Conclusion: There are several functions of the SAA protein, described in the context of inflammation, that are compatible with the mechanism of tumour invasion and metastasis. Our study not only detected increased SAA level in the serum of lung cancer patients but also identified that elevated SAA level may be a non-invasive biomarker useful for the prediction of lung cancer prognosis.
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Affiliation(s)
- W C S Cho
- Department of Clinical Oncology, Queen Elizabeth Hospital, 30 Gascoigne Road, Kowloon, Hong Kong.
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Abstract
IMPORTANCE OF THE FIELD Targeted liposomal drugs represent the next evolution of liposomal drug delivery in cancer treatment. In various preclinical cancer models, antibody-targeted PEGylated liposomal drugs have demonstrated superior therapeutic effects over their non-targeted counterparts. Single chain Fv (scFv) has gained popularity in recent years as the targeting agent of choice over traditional targeting agents such as monoclonal antibodies (mAb) and antibody fragments (e.g., Fab'). AREAS COVERED IN THIS REVIEW This review is focused mainly on advances in scFv-targeted liposomal drug delivery for the treatment of cancers, based on a survey of the recent literature, and on experiments done in a murine model of human B-lymphoma, using anti-CD19 targeted liposomes targeted with whole mAb, Fab' fragments and scFv fragments. WHAT THE READER WILL GAIN This review examines the recent advances in PEGylated immunoliposomal drug delivery, focusing on scFv fragments as targeting agents, in comparison with Fab' and mAb. TAKE HOME MESSAGE For clinical development, scFv are potentially preferred targeting agents for PEGylated liposomes over mAb and Fab', owing to factors such as decreased immunogenicity, and pharmacokinetics/biodistribution profiles that are similar to non-targeted PEGylated (Stealth) liposomes.
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Affiliation(s)
- W W Cheng
- Centre for Drug Research & Development, 364-2259 Lower Mall, University of British Columbia, Vancouver, Canada
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Abstract
This report is a study of structure, castability, mechanical properties as well as corrosion behaviour of titanium doped with up to 5 weight percentage (wt%) of a series of alloy elements, including Ta, Mo, Nb, Hf, Zr, Sn, Bi and Ag. The results indicate that, with addition of 1 wt% alloy element, Bi and Mo were most effective in enhancing the castability of titanium. With more alloy elements added, the castability values of most alloys more or less decreased. Except Ti-Mo system, all Ti alloys with a fine acicular morphology had the same crystal structure (hcp) as that of c.p. Ti with a typical lath type morphology. When 3 wt% or more Mo was added, a finer orthorhombic alpha'' phase was formed. The microhardness and bending strength values of Ti alloys were all higher than those of c.p. Ti. Among all alloys, Ti-Mo system exhibited the highest hardness and strength level. For a certain alloy, the bending strength did not necessarily increase with its alloy content. Except Ti-5Zr and Ti-Mo alloys, the bending moduli of most alloy systems were not much different from that of c.p. Ti. All alloys showed an excellent resistance to corrosion in Hanks' solution at 37 degrees C.
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Affiliation(s)
- W W Cheng
- Department of Materials Science and Engineering, National Cheng-Kung University, Tainan, Taiwan
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21
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Cheng WW, Farrell AP. Acute and sublethal toxicities of rotenone in juvenile rainbow trout (Oncorhynchus mykiss): swimming performance and oxygen consumption. Arch Environ Contam Toxicol 2007; 52:388-96. [PMID: 17354033 DOI: 10.1007/s00244-006-0051-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2006] [Accepted: 11/05/2006] [Indexed: 05/14/2023]
Abstract
Rotenone, a natural insecticide and piscicide, was shown to have an extremely small margin between no lethality (5.0 microg/L) and 100% mortality (6.6 microg/L) for static-renewal 96-hour toxicity tests with juvenile rainbow trout (Oncorhynchus mykiss). Dissolved organic carbon (DOC) at concentrations of 3.0 and 4.0 mg/L significantly increased the rotenone 96-hour LC(50) (median lethal concentration) from 5.80 microg/L (confidence interval (CI) 5.51 to 6.10) to 6.55 microg/L (CI 6.28 to 6.83) and 7.75 microg/L (CI 7.29 to 8.24), respectively, probably as a result of rotenone adsorption onto DOC, which decreased its bioavailability. Using concentrations of 0, 3.0, 4.0, and 5.0 microg/L rotenone and exposure periods of 2, 4, 6, 12, 16, 24, and 48 hours, the threshold concentration of rotenone for impairment of critical swimming performance (Ucrit) was 3.0 microg/L (P = 0.029), with no further impairment at higher concentrations and no time-dependent effect on Ucrit. Using continuous measures of oxygen uptake for 48 hours before and 48 hours during rotenone exposure (0, 1.5, 2.5, 3.0, and 3.5 microg/L), rotenone significantly decreased peak active oxygen uptake at all rotenone concentrations tested without affecting routine oxygen uptake. Fish were individually chased and then placed in rotenone concentrations of 0, 1.0, 3.0, 4.0, 5.0, and 6.0 microg/L to monitor initial postexercise oxygen uptake (Mo2Max) and excess postexercise oxygen consumption (EPOC) during a 40-minute recovery period. Rotenone significantly decreased Mo2Max (P = 0.002) after exposures to 4.0 and 5.0 microg/L, but not 6.0 microg/L, without affecting EPOC.
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Affiliation(s)
- W W Cheng
- Plant Product Division, Canadian Food Inspection Agency, 2 Constellation Crescent, Ottawa, Ontario, K1A 0Y9, Canada
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22
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Ngan RKC, Yip TTC, Cheng WW, Chan JKC, Cho WCS, Ma VWS, Wan KK, Au JSK, Law CK. Clinical Role of Circulating Epstein-Barr Virus DNA as a Tumor Marker in Lymphoepithelioma-Like Carcinoma of the Lung. Ann N Y Acad Sci 2004; 1022:263-70. [PMID: 15251971 DOI: 10.1196/annals.1318.041] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Nineteen Chinese patients with lymphoepithelioma-like carcinoma (LELC) of the lung were tested for Epstein-Barr virus (EBV) DNA in their serum samples by a quantitative polymerase chain reaction (PCR) technique. There was prospective serial monitoring of the serum in seven patients with advanced inoperable or relapsing disease. Five other patients at first diagnosis and two patients at relapse had only a single serum sample available. Serum samples were also taken from three other patients who had prior curative surgery and two patients with prolonged disease remission. Measurable levels of EBV DNA were detected in 11 of 12 patients with a pre-therapy serum sample and a clinically evident tumor. A low level of EBV DNA was also detectable in one of the two other patients whose first serum samples were obtained after some chemotherapy. There was no detectable EBV DNA in the five patients without evidence of tumor. The longitudinal serum EBV DNA profile of seven patients showed consistent correlation with response to therapy and clinical outcome. Patients with a pre-therapy serum EBV DNA >10,000 copies/mL had significantly inferior overall survival. This study suggests that circulating serum EBV DNA can be used as a tumor marker in the clinical management of patients with LELC of the lung.
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Affiliation(s)
- Roger K C Ngan
- Department of Clinical Oncology, Queen Elizabeth Hospital, Kowloon, Hong Kong Special Administrative Region, China.
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Abstract
BACKGROUND The use of bacterial culture to prevent bacterial contamination of blood components has renewed interest for extending the shelf life of PLT concentrates to 7 days after collection. STUDY DESIGN AND METHODS This study was therefore conducted to determine the residual risk of bacterial contamination in PLT concentrates at the end of 5 and 7 days after collection in a center where all PLT concentrates are routinely screened by taking samples on Day 2 for culture. PLT units with no growth after 48 hours were sampled a second time on Day 5 or Day 7 after collection, followed by inoculation into aerobic culture bottles. The inoculated bottles were then monitored for up to 7 days at 35 degrees C in an automatic monitoring and detection system. RESULTS During a 16-month study period, a total of 6020 PLT concentrates were tested 5 days (Group A, n=3010) and 7 days (Group B, n=3010) after collection. Four units in each group (0.133%) were found to be contaminated. In 6 units, bacteria were seen on direct Gram stain. In addition, 5 of the associated RBC units grew the same organisms on culture. The organisms include three coagulase-negative staphylococci and five Propionibacterium acnes. The positive rate of routine short-term bacterial culture was 0.035 percent during the same study period. CONCLUSION Despite routine short-term bacterial culture, a significant risk of bacterial contamination remains at 5 and 7 days after collection. For now, the shelf life of PLT concentrates should remain 5 days.
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Affiliation(s)
- C K Lee
- Hong Kong Red Cross Blood Transfusion Service and Center of Infection and Department of Microbiology, the University of Hong Kong, Hong Kong.
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Cheng WW, Ko CH, Chan AKH. Paediatric stroke: case series. Hong Kong Med J 2002; 8:216-20. [PMID: 12055370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023] Open
Abstract
Five cases of paediatric stroke are reported. Two patients presented with idiopathic stroke, another following vertebral artery dissection, one secondary to Moyamoya disease, and one patient with the syndrome of mitochondrial encephalopathy, lactic acidosis, and stroke-like episodes. The presentation, investigation, and management of paediatric stroke are discussed.
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Affiliation(s)
- W W Cheng
- Department of Paediatrics, Caritas Medical Centre, 111 Wing Hong Street, Shamshuipo, Hong Kong
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25
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Ngan RK, Lau WH, Yip TT, Cho WC, Cheng WW, Lim CK, Wan KK, Chu E, Joab I, Grunewald V, Poon YF, Ho JH. Remarkable application of serum EBV EBER-1 in monitoring response of nasopharyngeal cancer patients to salvage chemotherapy. Ann N Y Acad Sci 2001; 945:73-9. [PMID: 11708497 DOI: 10.1111/j.1749-6632.2001.tb03866.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Nineteen consecutive patients with metastatic or recurrent nasopharyngeal cancer (NPC) receiving combination chemotherapy were monitored for EBV DNA in their serum. EBV DNA (EBER-1) concentration in serum was measured before, during, and after chemotherapy. Thirteen patients had additional multiple prechemotherapy readings. There was a significant lead time from first detection of serum EBER-1 to clinical recurrence in 62% of patients by a mean of 17.4 weeks (range: 8-74.5 weeks; mean = 28.2 weeks if confined to the 8 patients with significant lead time). The median EBER-1 concentration was significantly higher in those with distant metastasis as compared to those with loco-regional recurrence only (17,468 vs. 684 pg/mL serum; p = 0.046, Mann-Whitney U test). Among the 13 patients who responded to chemotherapy, 4 exhibited clinical complete remission (CR) who were only found in the group with EBER-1 DNA drop to background level, while the magnitude of EBER-1 drop did not discriminate partial remission (PR) and stable disease (SD) patients clearly. Subsequent profile of EBER-1 DNA showed concordance with clinical course of either continuous remission or later progression. EBER-1 DNA in serum can become a useful adjunctive surrogate marker to monitor chemotherapeutic response in NPC patients with distant metastasis or advanced local recurrence.
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Affiliation(s)
- R K Ngan
- Department of Clinical Oncology, Queen Elizabeth Hospital, Kowloon, Hong Kong, China.
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Affiliation(s)
- W W Cheng
- Department of Paediatrics, Caritas Medical Centre, Hong Kong SAR, China.
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Kong CK, Cheng WW, Wong LY. Epidemiology of headache in Hong Kong primary-level schoolchildren: questionnaire study. Hong Kong Med J 2001; 7:29-33. [PMID: 11406673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023] Open
Abstract
OBJECTIVE To collect and analyse epidemiological data on childhood headache in the Hong Kong community. DESIGN Questionnaire study. SETTING Three primary schools, Hong Kong. PARTICIPANTS Two thousand, one hundred and twenty pupils from 2156 replied to the questionnaire survey. One hundred and twenty-four pupils who were identified to have suspected recurrent headache were invited to a follow-up medical consultation. MAIN OUTCOME MEASURES Age-groups and prevalence of tension-type and migraine headache, using the diagnostic criteria of the International Headache Society. RESULTS The overall prevalence of headache in the 2120 respondents was 2.8%. The prevalence of tension-type headache, migraine, probable migraine, and unclassified headache were 1.2%, 0.5%, 0.7%, and 0.5%, respectively. The age-specific prevalence of headache from the age of 6 to 13 years showed a steadily increasing trend from childhood to the early teens. CONCLUSION Headache is a common complaint for children, although it may be underrecognised. Further study will be beneficial for providing better management of headache in this population.
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Affiliation(s)
- C K Kong
- Department of Paediatrics, Caritas Medical Centre, 111 Wing Hong Street, Shamshuipo, Hong Kong
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Cheng WW, Otsubo H, Snead OC. Surgery for intractable epilepsy in a 14-year-old girl. Hong Kong Med J 2001; 7:97-100. [PMID: 11406683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023] Open
Abstract
We report on a 14-year-old girl who presented with a 2-year history of simple and complex partial seizures with secondary generalisation. Monotherapy using carbamazepine and combination therapy using carbamazepine and gabapentin had been tried within the 2 years before presentation. Seizure control, however, was poor. Magnetic resonance imaging showed structural abnormalities over the right occipital and temporal lobes. Continuous scalp video electroencephalography was performed over 4 days, during which six clinical seizures were associated with electroencephalography changes at the right occipital and temporal lobes. Invasive intracranial video electroencephalography identified a focus at the right occipital lobe, a focus at the right temporal lobe that spread rapidly to the right parietal lobe, and an irritative zone over the posterior part of the right frontal lobe. Functional mapping delineated the motor and sensory cortices. Right temporal lobectomy, right occipitoparietal cortical excision, and multiple subpial transections of the posterior part of the right frontal lobe were performed. For 16 months after the surgery, the patient has been seizure-free while receiving drug treatment, and the only complication reported has been a segmental loss of the left visual field.
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Affiliation(s)
- W W Cheng
- Department of Paediatrics, Caritas Medical Centre, 111 Wing Hong Street, Shamshuipo, Hong Kong
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Zhang ZJ, Cheng WW, Yang YM. [Low-dose of processed rhubarb in preventing pregnancy induced hypertension]. Zhonghua Fu Chan Ke Za Zhi 1994; 29:463-4, 509. [PMID: 7835116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A prospective randomized double blind study with processed rhubarb (low dose of 0.75g/day) was carried out in pregnant women at risk of pregnancy induced hypertension (PIH). Rhubarb (140 cases) or placebo (125 cases) was given to women at risk of PIH consecutively from the 28th week of gestation till delivery, and another 68 pregnant women as control. Results showed that 5.7% of rhubarb treated women developed PIH, a rate substantially lower than the 20.8% of the placebo group (P < 0.01). After 9-10 weeks of treatment, the plasma fibronectin (Fn) level and Plasminogen activator inhibiter (PAI) value were found significantly lower (P < 0.05) in the rhubarb treated group than in the placebo. Antithrombin III (ATIII) level also decreased significantly less in the rhubarb group as compared with the placebo (P < 0.05). It indicated that low dose of processed rhubarb has a good prophylactic effect on PIH. The mechanism may be related with the inhibition of PAI activity, reduced Fn synthesis and decreased damage to vascular endothelium.
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Affiliation(s)
- Z J Zhang
- Obstetrics and Gynecology Hospital, Shanghai Medical University
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Wong PK, Cheng WW, Wai CH, Wong CN. Comparative studies of water quality in two brackish ponds for shrimp cultivation in a salt marsh. Environ Pollut 1992; 77:87-92. [PMID: 15091982 DOI: 10.1016/0269-7491(92)90162-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/1991] [Accepted: 09/04/1991] [Indexed: 05/24/2023]
Abstract
Physical, chemical and microbiological characteristics of two 'keiwais' (brackish ponds built along the coastal area for shrimp cultivation) in the Mai Po Marshes, Hong Kong, were measured and compared. One keiwai, located closer to the domestic and agricultural areas, had lower shrimp production than the other. Physical, microbiological and most of the chemical parameters of two keiwais showed no significant difference, while the keiwai closer to the domestic and agricultural areas had higher biochemical oxygen demand (BOD5), and higher levels of phosphate (PO4(3-)-P) and cadmium (Cd2+). Results of the present study indicate that these keiwais were polluted by sewage discharged from nearby domestic, agricultural and industrial areas. The possibility that water received by the less polluted keiwai was purified by surrounding mangroves and sediments in the Mai Po Marshes is discussed.
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Affiliation(s)
- P K Wong
- Department of Biology, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
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Cheng WW, Zhang ZJ. [Low-dose aspirin preventing pregnancy induced hypertension]. Zhonghua Fu Chan Ke Za Zhi 1991; 26:342-5, 387. [PMID: 1804603] [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: 12/28/2022]
Abstract
A prospective randomized double-blind study was carried out in pregnant women with risk of pregnancy induced hypertension (PIH). Low dose Aspirin (50 mg/day) or placebo was given consecutively from the 28th weeks of gestation. The results have shown that 8% of the pregnant women in the aspirin treatment group had developed PIH, which was substantially lower than that in the control group (24%) (P less than 0.05). The ratio of TXB2/6-keto-PGF1 alpha increased significantly in the control group while it remained unchanged in treatment group. Increasing plasma fibronectin (Fn) and decreasing AT-III level were seen in the control group but no changes of these parameters in the treatment group. It was presumed that low dose aspirin may have prophylactic effect on PIH. The mechanism of aspirin may be the inhibition of TXA2 and Fn synthesis and decreased consumption of AT-III.
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Affiliation(s)
- W W Cheng
- Shanghai Medical University Obstetrics and Gynecology Hospital
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