1.Expression and functions of transient receptor potential channels in liver diseases.
Wenhui WANG ; Pengyu LIU ; Yalin ZHANG ; Li YAN ; Michael X ZHU ; Jin WANG ; Ye YU
Acta Pharmaceutica Sinica B 2023;13(2):445-459
Liver diseases constitute a major healthcare burden globally, including acute hepatic injury resulted from acetaminophen overdose, ischemia-reperfusion or hepatotropic viral infection and chronic hepatitis, alcoholic liver disease (ALD), non-alcoholic fatty liver disease (NAFLD) and hepatocellular carcinoma (HCC). Attainable treatment strategies for most liver diseases remain inadequate, highlighting the importance of substantial pathogenesis. The transient receptor potential (TRP) channels represent a versatile signalling mechanism regulating fundamental physiological processes in the liver. It is not surprising that liver diseases become a newly explored field to enrich our knowledge of TRP channels. Here, we discuss recent findings revealing TRP functions across the fundamental pathological course from early hepatocellular injury caused by various insults, to inflammation, subsequent fibrosis and hepatoma. We also explore expression levels of TRPs in liver tissues of ALD, NAFLD and HCC patients from Gene Expression Omnibus (GEO) or The Cancer Genome Atlas (TCGA) database and survival analysis estimated by Kaplan-Meier Plotter. At last, we address the therapeutical potential and challenges by pharmacologically targeting TRPs to treat liver diseases. The aim is to provide a better understanding of the implications of TRP channels in liver diseases, contributing to the discovery of novel therapeutic targets and efficient drugs.
2.Inter-hospital trends of post-resuscitation interventions and outcomes of out-of-hospital cardiac arrest in Singapore.
Julia Li Yan JAFFAR ; Stephanie FOOK-CHONG ; Nur SHAHIDAH ; Andrew Fu Wah HO ; Yih Yng NG ; Shalini ARULANANDAM ; Alexander WHITE ; Le Xuan LIEW ; Nurul ASYIKIN ; Benjamin Sieu Hon LEONG ; Han Nee GAN ; Desmond MAO ; Michael Yih Chong CHIA ; Si Oon CHEAH ; Marcus Eng Hock ONG
Annals of the Academy of Medicine, Singapore 2022;51(6):341-350
INTRODUCTION:
Hospital-based resuscitation interventions, such as therapeutic temperature management (TTM), emergency percutaneous coronary intervention (PCI) and extracorporeal membrane oxygenation (ECMO) can improve outcomes in out-of-hospital cardiac arrest (OHCA). We investigated post-resuscitation interventions and hospital characteristics on OHCA outcomes across public hospitals in Singapore over a 9-year period.
METHODS:
This was a prospective cohort study of all OHCA cases that presented to 6 hospitals in Singapore from 2010 to 2018. Data were extracted from the Pan-Asian Resuscitation Outcomes Study Clinical Research Network (PAROS CRN) registry. We excluded patients younger than 18 years or were dead on arrival at the emergency department. The outcomes were 30-day survival post-arrest, survival to admission, and neurological outcome.
RESULTS:
The study analysed 17,735 cases. There was an increasing rate of provision of TTM, emergency PCI and ECMO (P<0.001) in hospitals, and a positive trend of survival outcomes (P<0.001). Relative to hospital F, hospitals B and C had lower provision rates of TTM (≤5.2%). ECMO rate was consistently <1% in all hospitals except hospital F. Hospitals A, B, C, E had <6.5% rates of provision of emergency PCI. Relative to hospital F, OHCA cases from hospitals A, B and C had lower odds of 30-day survival (adjusted odds ratio [aOR]<1; P<0.05 for hospitals A-C) and lower odds of good neurological outcomes (aOR<1; P<0.05 for hospitals A-C). OHCA cases from academic hospitals had higher odds ratio (OR) of 30-day survival (OR 1.3, 95% CI 1.1-1.5) than cases from hospitals without an academic status.
CONCLUSION
Post-resuscitation interventions for OHCA increased across all hospitals in Singapore from 2010 to 2018, correlating with survival rates. The academic status of hospitals was associated with improved survival.
Hospitals, Public
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Humans
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Out-of-Hospital Cardiac Arrest/therapy*
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Percutaneous Coronary Intervention
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Prospective Studies
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Singapore/epidemiology*
3.Comparative Effectiveness of Laterally Placed Expandable versus Static Interbody Spacers: A 1-Year Follow-Up Radiographic and Clinical Outcomes Study
Yan Michael LI ; Richard Francis FRISCH ; Zheng HUANG ; James Edward TOWNER ; Yan Icy LI ; Amber Lynn EDSALL ; Charles LEDONIO
Asian Spine Journal 2021;15(1):89-96
Methods:
This is an Institutional Review Board-exempt review of 69 patients (static, n=32; expandable, n=37) diagnosed with DDD who underwent MIS-LLIF at 1–2 contiguous level(s) using static or expandable spacers. Radiographic and clinical outcomes were collected and compared at pre- and postoperative time points up to 12 months.
Results:
The expandable group had a significantly higher mean change in Visual Analog Scale (VAS) scores at 6 weeks, 6 months, and 12 months vs. static (∆VAS at 12 months: expandable, 6.7±1.3; static, 5.1±2.6). Mean improvement of Oswestry Disability Index (ODI) scores at 3, 6, and 12 months were significantly better for the expandable group vs. static (∆ODI at 12 months: expandable, 63.2±13.2; static, 29.8±23.4). Mean DH and NH significantly increased at final follow-up for both groups, with no significant difference in DH improvement between groups. The expandable mean NH improvement at 6 weeks and 6 months was significantly greater vs. static. Segmental lordosis significantly improved in the expandable group at all time intervals vs static. Subsidence rate at 12 months was significantly lower in the expandable group (1/46, 2.2%) vs. static (12/37, 32.4%).
Conclusions
Expandable spacers resulted in a significantly lower subsidence rate, improve segmental lordosis, and VAS and ODI outcomes at 12 months vs. static.
4.Correction to: Human cytomegalovirus DNA and immediate early protein 1/2 are highly associated with glioma and prognosis.
Le WEN ; Fei ZHAO ; Yong QIU ; Shuang CHENG ; Jin-Yan SUN ; Wei FANG ; Simon RAYNER ; Michael A MCVOY ; Xing-Jun JIANG ; Qiyi TANG ; Fang-Cheng LI ; Fei HU ; Min-Hua LUO
Protein & Cell 2021;12(4):313-313
5.Human cytomegalovirus DNA and immediate early protein 1/2 are highly associated with glioma and prognosis.
Le WEN ; Fei ZHAO ; Yong QIU ; Shuang CHENG ; Jin-Yan SUN ; Wei FANG ; Simon RAYNER ; Michael A MCVOY ; Xing-Jun JIANG ; Qiyi TANG ; Fang-Cheng LI ; Fei HU ; Min-Hua LUO
Protein & Cell 2020;11(7):525-533
6.The USCACA hosted symposiums at the 7th CACA annual meeting and the 15th CSCO annual meeting in Beijing.
Michael SHI ; Wancai YANG ; Pascal QIAN ; Li YAN
Chinese Journal of Cancer 2012;31(11):505-506
In September 2012, the US Chinese Anti-Cancer Association (USCACA) hosted two symposiums in Beijing. The USCACA hosted the first joint session at the 7th annual meetings of the Chinese Anti-Cancer Association (CACA), themed on "Collaboration between the US and China in Cancer Research." Six experts from the United States and China presented their latest work on basic and translational cancer research. During this symposium, 5 young Chinese scholars, returnees after their training in the United States, were honored the"AFCR-USCACA Scholarships Award." The USCACA hosted a second symposium during the 15th annual meeting of the Chinese Society of Clinical Oncology (CSCO), focused on the "US-China Collaboration in Cancer Drug Clinical Development." An international delegation of oncology experts presented the innovative clinical trial strategies and discussed the biomarkers for cancer early detection and clinical trials, targeted therapy, and new drug development. The Oncology Drug Clinical Development and Safety Evaluation Committee was also launched to promote an innovative environment and to provide a collaborative platform for anti-cancer drug development in China.
Awards and Prizes
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China
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Drug Discovery
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International Cooperation
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Medical Oncology
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Societies, Medical
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United States
7.Prevalence of social distance and restriction among college students with suicide attempts in Chongqing
Wo WANG ; Ming AI ; Li KUANG ; Jian-Mei CHEN ; Yao GAN ; Yan ZENG ; Dan-Dan LOU ; Wan-Ting LIU ; Ya-Juan NIU ; R.Phillips MICHAEL
Chinese Journal of Epidemiology 2011;32(4):341-345
Objective To explore the attitude towards 10 different populations with different characteristics on their social distance and acceptance among those people with or without suicidal attempts among college students in Chongqing.Methods 9808 college students were randomly selected from 11 universities in Chongqing and administered a self-constructed questionnaire"Suicide Attitude and Mental Health Status Questionnaire".A t-test was employed to analyze the social distance and degree of acceptance of college students with or without suicide attempts towards different groups as criminals,hypertensive,with suicide actions,homosexuals,depressive disorder,HIV infection,drug addiction,death of family members,hospitalization history in mental service and alcohol addiction.Results 169 college students had suicide attempts;the reporting rate of suicide attempts was 1.7%.Among college students.the scores higher than 50 on nine items related to social distance towards strangers with those 10 different characteristics and the top three were on those with HIV infection,drug addiction and hospitalization history in mental service.There were differences(P<0.05)in scores of social distance attitude towards strangers with drug addiction(with suicide attempts 83.38±21.82,without suicide attempts 78.55±21.55,t=2.88).hospitalization history in mental service(79.27±21.23,75.67±21.31,t=2.17),homosexuality(66.87±24.77,74.14±21.94,t=-4.25),alcohol addiction(66.72±21.80,61.00±22.80,t=3.23)and hypertension(56.65±20.40,53.36±21.05.t=2.01)between college students with or without suicide attempts.College students scored higher than 50 in 7 items of social rejective attitudes towards acquaintances,of those with hospitalization history in mental service,drug and alcohol addiction ranked the top three.It showed statistical significances in social rejection attitudes towards acquaintances with homosexuality(35.28±30.38,42.83±30.76,t=-3.14),severe depression(56.59±28.49,61.64±25.56,t=-2.53)and suicide behaviors(51.46±28.19,56.56±26.35,t=-2.48)between students with or without suicide attempts.Conclusion College students in Chongqing kept quite far social distance and restrictive behaviors in college students with or without suicide attempts.Targeted interventions on suicide attempters should be carried out accordingly.
8.Increased stromal-cell-derived factor 1 enhances the homing of bone marrow derived mesenchymal stem cells in dilated cardiomyopathy in rats.
Yan-Li ZHOU ; Hai-Feng ZHANG ; Xin-Li LI ; Ruo-Min DI ; Wen-Ming YAO ; Dian-Fu LI ; Jian-Lin FENG ; Jun HUANG ; Ke-Jiang CAO ; Michael FU
Chinese Medical Journal 2010;123(22):3282-3287
BACKGROUNDStem cell transplantation has been shown to have beneficial effects on dilated cardiomyopathy. However, mechanism for stem cell homing to cardiac tissue in dilated cardiomyopathy has not yet been elucidated.
METHODSMesenchymal stem cells were obtained from rat bone marrow, expanded in vitro, and labeled with (99m)Tc. Cardiomyopathy model was induced by doxorubicin in rats. (99m)Tc labeled cells were infused into the left ventricles in cardiomyopathy and control rats. Sixteen hours after injection, animals were sacrificed and different tissues were harvested to measure specific radioactivity. By use of real-time polymerase chain reaction and immunohistochemistry, mRNA and protein expressions for stromal-cell-derived factor 1 in cardiac tissue were measured.
RESULTSLabeling efficiency of mesenchymal stem cells was (70.0 ± 11.2)%. Sixteen hours after mesenchymal stem cell transplantation, the heart-to-muscle radioactivity ratio was increased significantly in cardiomyopathy hearts as compared to control hearts. Both mRNA and protein expressions of stromal-cell-derived factor 1 were up-regulated in cardiomyopathy hearts as compared with control hearts.
CONCLUSIONIn dilated cardiomyopathy induced by doxorubicin up-regulated expression of stromal-cell-derived factor 1 in heart may induce mesenchymal stem cells home to the heart.
Animals ; Bone Marrow Cells ; cytology ; metabolism ; Cardiomyopathy, Dilated ; therapy ; Cells, Cultured ; Chemokine CXCL12 ; genetics ; metabolism ; Immunohistochemistry ; Mesenchymal Stem Cell Transplantation ; Mesenchymal Stromal Cells ; cytology ; metabolism ; Rats ; Rats, Sprague-Dawley ; Reverse Transcriptase Polymerase Chain Reaction
9.Suicide ideation among college students in Chongqing
Jian-Mei CHEN ; Ming AI ; Li KUANG ; Min-Jian WANG ; Yan SHEN ; Da-Qi LI ; Xin-Xue GAO ; Xue-Mei LI ; Philips R. MICHAEL ; Ya-Juan NIU
Chinese Journal of Epidemiology 2010;31(3):290-293
Objective To describe the prevalence and risk factors for suicide ideation among college students in Chongqing city. Methods Data on suicide ideation and related factors were collected from 9808 college students at 11 colleges randomly selected in Chongqing. A multiple logistic regression model was used to identify risk factors for suicide ideation. Results 1279 (13.0%) of the 9808 students reported suicide ideation and the constituent ratio of boys and girls was 3:4 whileriskfactors for suicide ideation were ranked as follows: high frequency of feeling hopeless in prior year (OR=5.07,95%CI: 4.27-6.02); having psychological problems in recent 1 month that affecting daily lives and learning(2.07,1.79-2.38); relatives having suicide behavior (1.77,1.52-2.08); having had sexual experience (1.95,1.65-2.30); being female (1.66,1.45-1.90) and friends who had had suicide attempts(1.46,1.28-1.67);having diseases in the last 1 month that affecting daily lives and learning (1.29,1.08-1.52). Conclusion The prevalence of suicide ideation among these college students was high that calls the development,implementation and assessment of suicide prevention plans for college students that focusing on the risk factors identified for suicide ideation.
10.Analysis of genetic diversity and biological functional site of HIV-1 gp120 from a patient with AIDS dementia complex.
Yu-Fen YAN ; Li ZHAO ; Zhi-Yu WANG ; Michael S MCGRATH ; Xiao-Yu HOU ; Xiao-Min ZHENG ; Yan-Yan SONG ; Yao-Ping ; Hong-Ling WEN ; Gui-Ting WANG ; Hong-Zhi XU
Chinese Journal of Virology 2009;25(3):166-172
To explore the relationship between the genetic diversity and biological functional site of human immunodeficiency virus HIV-1 gp120 and the pathogenesis of AIDS dementia complex (ADC), the full length sequences of gp120 gene was amplified with PCR from genomic DNA which was extracted from lymphoid and different brain department (periaortic lymphoid, temporal gray/white matter junction, periventricular tissue, choroids plexus, occipital white matter and occipital gray/white matter junction.) of a patient who died of ADC. PCR products were cloned into the pGEM-T vector and positive clones were sequenced. The analysis of neighbor-joining tree, N-glycosylation sites, values of ds/dn, and loop were then all performed. The samples were all identified as HIV-1 B and genetic variation existed in HIV-1 gp120 isolated from different tissues. Compared with standard HIV-1B gp120, biological functional sites of HIV-1 gp120 isolated from the patient changed to some extent. In addition, there were differences in some biological functional sites of HIV-1 gp120 between lymphoid and brain. Therefore, genetic diversity and alterations of some biological functional sites of HIV-1 gp120 might be associated with the pathogenesis of ADC.
AIDS Dementia Complex
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virology
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Amino Acid Sequence
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Genetic Variation
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genetics
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HIV Envelope Protein gp120
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chemistry
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classification
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genetics
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Humans
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Molecular Sequence Data
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Phylogeny
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Polymerase Chain Reaction
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Sequence Analysis, DNA
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Sequence Homology, Amino Acid

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