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Yan SY, Zhang XR, Zhang RJ, Ma L, Li H, He M, Wu C, Xiao AQ, You C, Liu Y, Wang YQ, Tian R. [Construction of zebrafish models for screening intracranial hemorrhage associated genes]. Zhonghua Yi Xue Za Zhi 2022; 102:2619-2623. [PMID: 36058688 DOI: 10.3760/cma.j.cn112137-20211206-02713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To construct zebrafish models for the screening of intracranial hemorrhage (ICH) associated genes. Methods: ICH zebrafish models were constructed through morpholino oligonucleotides (MOs) technique and microinjection technique, and multiple verification was performed from macro and micro perspectives. First, the normal wild-type AB strain zebrafish injected with control MO was used as the control group, and AB zebrafish embryos microinjected with MOs of genes related to development of neural crest-derived cells (NCDCs) were used as the study group, such as col8a1 MO, tfap2α MO, msx1a MO, msx2 MO, and dkk1a MO. Preliminary verification of the model was conducted under a white-light optical microscope. Then, the model was verified by Tg (flk1: gfp; gata1: dsRed) double transgenic zebrafish, with vascular endothelial cells labeled by green fluorescent protein (GFP) and red blood cell labeled by fluorescent protein (dsRed), and thus the location of cerebral hemorrhage can be observed more clearly. Specifically, zebrafish embryos were microinjected with Control MO as the control group and those microinjected with col8a1 MO as the study group. Then the embryos were cultured until 48 hours post-fertilization to observe the leakage of red blood cells under the confocal laser scanning microscope. Finally, Tg (flk1: gfp) transgenic zebrafish was used to verify the model based on the blood-brain barrier (BBB). Through the leakage of dextran-rhodamine and DAPI dyes, the destruction of BBB and the occurrence of cerebral hemorrhage in zebrafish were further clarified, and quantitative statistics were carried out to verify the relationship between NCDCs development related genes and cerebral hemorrhage phenotype, which proved that the modeling was effective. Results: The zebrafish with col8a1, tfap2α, and msx1 mutations in the study group had apparent ICH compared with wildtype zebrafish, and the prevalence of ICH was 18.18% (52/286), 23.04% (62/251), and 35.94% (23/64), respectively. While, the zebrafish with msx2 and dkk1a mutations rarely had ICH, with the ICH prevalence of 1.03% (1/97) and 1.15% (1/87), respectively. The prevalence of red blood cells leakage in Tg (flk1:gfp; gata1:dsred) double transgenic zebrafish injected with Control Mo and col8a1 Mo was 0.37% (1/273) and 18.18% (52/286) (P<0.001). The number of DAPI positive nuclei of Tg (flk1: gfp) transgenic zebrafish injected with Control Mo and col8a1 Mo was 10.05±5.27 and 60.35±3.96 (P<0.001), and the fluorescent intensity of midbrain parenchymal induced by dextran-rhodamin leakage was 2.54±4.70 and 5.13±3.52 (P<0.001). Conclusion: This study successfully constructs the ICH zebrafish models, and ICH-related genes are screened out, such as col8a1, tfap2α, msx1, and so on.
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Affiliation(s)
- S Y Yan
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - X R Zhang
- Bioengineering College, Chongqing University, Chongqing 400030, China
| | - R J Zhang
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - L Ma
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - H Li
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - M He
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - C Wu
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - A Q Xiao
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - C You
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Y Liu
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Y Q Wang
- Bioengineering College, Chongqing University, Chongqing 400030, China
| | - R Tian
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, China
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Zhang RJ, Yan SY, Hu X, Li H, Liu Y, Wu C, He M, Ma L, You C, Tian R. [Effect of D-dimer on the prognosis of patients with aneurysmal subarachnoid hemorrhage based on propensity score matching]. Zhonghua Yi Xue Za Zhi 2022; 102:2256-2264. [PMID: 35927056 DOI: 10.3760/cma.j.cn112137-20211123-02606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To evaluate the effect of D-dimer on the prognosis of patients with aneurysmal subarachnoid hemorrhage (aSAH). Methods: A total of 1 658 patients who were first diagnosed with aSAH in West China Hospital of Sichuan University from December 2013 to June 2019 were retrospectively analyzed. All patients were divided into four groups according to the median and quartiles of D-dimer level, including 415 cases, 414 cases, 414 cases, and 415 cases in groups Q1, Q2, Q3, and Q4, respectively. Groups Q2, Q3, Q4, and group Q1 were matched by propensity score matching (PSM), and the correlation between D-dimer and each outcome was analyzed by logistic regression. Since there is no general clinical classification standard for D-dimer, this study attempted to reclassify patients into groups q1 (<0.55 mg/L, 94 cases), q2 (0.55-1.65 mg/L, 435 cases), q3 (1.65-5.50 mg/L, 650 cases) and q4 (>5.50 mg/L, 303 cases) based on 1, 3, 5, 10 times of the upper limit of the current clinical reference value. Results: The age of 1 658 aSAH patients were (57±12) years, including 1 068 males and 590 females. After PSM based on the median and quartiles of D-dimer level, there were 318 cases, 318 cases, 251 cases, and 229 cases in groups Q1, Q2, Q3, and Q4, respectively. Compared with group Q1 (<1.23 mg/L), the risk of in-hospital infection (OR=2.14, 95%CI: 1.47-3.11, P<0.001), pneumonia (OR=2.22, 95%CI: 1.51-3.28, P<0.001), urinary tract infection (OR=1.75, 95%CI: 1.12-2.75, P=0.014) and intracranial rebleeding (OR=3.59, 95%CI: 1.30-9.91, P=0.013) group Q4 (>4.95 mg/L) was higher. Likewise, the risk of adverse outcomes in group Q4 was also higher than that in group Q1, including unfavorable outcome at discharge (OR=2.12, 95%CI: 1.43-3.14, P<0.001), mortality during hospitalization (OR=3.03, 95%CI: 1.26-7.33, P=0.014), mortality within 90 days (OR=2.33, 95%CI:1.29-4.22, P=0.005), mortality within 180 days (OR=1.92, 95%CI: 1.12-3.29, P=0.018), mortality within 1 year (OR=2.07, 95%CI:1.23-3.47, P=0.006) and mortality during the longest follow-up period (OR=1.97, 95%CI:1.26-3.09, P=0.003). After secondary grouping and PSM based on current clinical reference values, there were 90 cases, 87 cases, 90 cases, and 43 cases, respectively in groups q1, q2, q3 and q4. The risk of nosocomial infection (OR=2.26, 95%CI: 1.14-4.45, P=0.019), blood-borne infection (OR=8.86, 95%CI:1.08-72.78, P=0.042), poor prognosis at discharge (OR=4.92, 95%CI: 2.18-11.07, P<0.001), death within 180 days (OR=3.39, 95%CI: 1.04-11.08, P=0.043), death within 1 year (OR=3.23, 95%CI: 1.10-9.49, P=0.033), and death within the longest follow-up period (OR=3.28, 95%CI: 1.34-8.01, P=0.009) was still higher in group q4 than that in group q1. Conclusion: aSAH patients with high D-dimer level have a higher risk of complications and mortality during hospitalization and worse clinical prognosis.
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Affiliation(s)
- R J Zhang
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - S Y Yan
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - X Hu
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - H Li
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Y Liu
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - C Wu
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - M He
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - L Ma
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - C You
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - R Tian
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, China
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Sun J, Song WD, Yan SY, Xi ZJ. [Chloroquine inhibits viability of renal carcinoma cells and enhances sunitinib-induced caspase-dependent apoptosis]. Beijing Da Xue Xue Bao Yi Xue Ban 2018; 50:778-784. [PMID: 30337735] [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: 06/08/2023]
Abstract
OBJECTIVE To determine whether chloroquine (CQ), an often used inhibitor of late autophagy and autophagosome/lyosome fusion, can inhibit proliferation of renal carcinoma cells and investigate its effect on sunitinib (ST)-induced apoptosis. METHODS Renal carcinoma cell line 786 O and ACHN had been used as cellular model and 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium, inner salt (MTS) assay was carried out to detect the cell viability in response to CQ or ST treatment. Both transmission electron microscope and immunoblotting had been employed to observe apoptotic and autophagic process. To examine the involvement of autophagy in ST-dependent apoptosis, autophagy had been inhibited either chemically or genetically via utilizing autophagy inhibitor or specific small interference RNA (siRNA) targeted to either Ulk1 (unc-51-like kinase 1) or LC3 (microtubule associated protein 1 light chain 3 fusion protein), two essential autophagic proteins. RESULTS Both ST and CQ induced cell viability loss, indicating that either of them could inhibit renal cancer cell proliferation. Clone formation experiments confirmed the aforementioned results. Furthermore, the combined ST with CQ synergistically promoted the loss of cell viability. By transmission electron microscopy and immunoblotting, we found that the ST induced both autophagy and caspase-dependent apoptosis. While 3-MA, an early autophagy inhibitor, reduced the ST-induced cleavage of poly (ADP-ribose) polymerase-1 (PARP-1), a substrate of caspase 3/7 and often used marker of caspase-dependent apoptosis, CQ promoted the ST-dependent PARP-1 cleavage, indicating that the early and late autophagy functioned differentially on the ST-activated apoptotic process. Moreover, the knock down of either Ulk1 or LC3 decreased the ST-caused apoptosis.Interestingly, we observed that rapamycin, a specific inhibitor of mTOR (mammalian target of rapamycin) and an inducer of autophagy, also showed to inhibit cell viability and increased the cleavage of PARP-1 in the ST-treated cells, suggesting that autophagy was likely to play a dual role in the regulation of the ST-induced apoptosis. CONCLUSION ST activates both apoptotic and autophagic process in renal carcinoma cells. Although autophagy precedes the ST-induced apoptosis, however, early and late autophagy functions differentially on the apoptotic process induced by this compound. Additionally, ST can coordinate with the inducer of autophagy to inhibit the cell proliferation. Further research in this direction will let us illuminate to utilize CQ as a potential drug in the treatment of renal carcinoma.
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Affiliation(s)
- J Sun
- Department of Pathology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China; Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - W D Song
- Department of Urology, Peking University First Hospital,Institute of Urology,Peking University,Beijing 100034, China
| | - S Y Yan
- Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Z J Xi
- Department of Urology, Peking University First Hospital,Institute of Urology,Peking University,Beijing 100034, China
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Zeng J, Sun WL, Chen GY, Pan Q, Yan SY, Sun C, Xu ZJ, Fan JG. [Efficiency of FibroScan and FibroTouch in liver stiffness measurement and fat quantification: a comparative analysis]. Zhonghua Gan Zang Bing Za Zhi 2017; 24:652-658. [PMID: 27788720 DOI: 10.3760/cma.j.issn.1007-3418.2016.09.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Objective: To investigate the efficiency of FibroScan(FS)and FibroTouch(FT)in liver stiffness measurement(LSM)and fat quantification through a comparative analysis. Methods: The outpatients or hospitalized patients who underwent LSM and fat quantification using FS and FT were enrolled. The differences in success rate and detecting parameters between FS and FT were analyzed, as well as the correlation between FS and FT values. The t-test was used for comparison of normally distributed continuous data between groups, and a one-way analysis of variance or the Kruskal-Wallis test was used for comparison between multiple groups. The Mann-Whitney U test was used for comparison of non-normally distributed continuous data between groups. Results: A total of 1621 patients were enrolled. The success rates of FT and FS were 100% and 94.96%, respectively, and the success rate of FS was influenced by sex, age, body mass index, and biochemical markers of liver function. FT has a significantly shorter duration of single detection and a significantly lower number of times of single detection than FS(duration of single detection: 190.21±38.78 s vs 220.89±68.36 s, P < 0.01; number of single detection times: 10.31±1.32 vs 11.81±3.76, P < 0.01), as well as a significantly lower ratio of interquartile range to median of fat quantification in the same patient(5.39%±4.81% vs 17.18%±14.07%, P < 0.01). The LSM and fat quantification of FS were significantly correlated with those of FT(r = 0.645 and 0.620, both Based on the duration and number of times of single detection, success rate, and stability of fat quantification, FT seems to have a better detection efficiency than FS. The detection values of FT and FS can be calculated with regression equations < 0.01). The equations of linear regression were LSM(FT)= 4.435+0.477×LSM(FS); CAP(FT)= 134.71+0.456×CAP(FS). Conclusion: Based on the duration and number of times of single detection, success rate, and stability of fat quantification, FT seems to have a better detection efficiency than FS. The detection values of FT and FS can be calculated with regression equations.
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Affiliation(s)
- J Zeng
- Department of Gastroenterology, Center for Fatty Liver, Xinhua Hospital, Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
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Li SJ, Yan SY, Zhou Y, Han KLEE, Guo WL, Xia Q, Vibhuti SP, Wang JZ, Ji SW, Yang SHAH, Yang SN, Shan C, Liu CY, Yi ZZ, Liu RB, Lin L, Wang B, He JQ, Li ZL, Pan Y, Guo L, Chen MX, Liu XN, Zhou Y, Li L, Xiong CQ, Qi Q, Hei XY, Cao J, Jiang YJ, Zhang MY, Shoo Y. [Ventilator-associated pneumonia among premature infants <34 weeks' gestational age in neonatal intensive care unit in China: a multicenter study]. Zhonghua Er Ke Za Zhi 2017; 55:182-187. [PMID: 28273700 DOI: 10.3760/cma.j.issn.0578-1310.2017.03.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the incidence and pathogen distribution of ventilator-associated pneumonia (VAP) among preterm infants admitted to level Ⅲ neonatal intensive care units (NICU) in China. Method: A prospective study was conducted in 25 level Ⅲ NICU, enrolling all preterm infants <34 weeks gestational age admitted to the participating NICU within the first 7 days of life from May 2015 to April 2016. Chi-square test, t test and Mann-Whitney U test were used for statistical analysis. Result: A total of 7 918 patients were enrolled, within whom 4 623(58.4%) were males. The birth weight was (1 639±415) g and the gestational age was (31.4±2.0) weeks; 4 654(58.8%) infants required non-invasive mechanical ventilation and 2 154(27.2%) required intubation. Of all the mechanically ventilated patients, VAP occurred in 95 patients. The overall VAP rate was 7.0 episodes per 1 000 ventilator days, varying from 0 to 34.4 episodes per 1 000 ventilator days in different centers. The incidence of VAP was 9.6 and 6.0 per 1 000 ventilator days in children's hospitals and maternity-infant hospitals respectively, without significant differences (t=1.002, P=0.327). Gram-negative bacilli (76 strains, 91.6%) were the primary VAP microorganisms, mainly Acinetobacter baumannii (24 strains, 28.9%), Klebsiella pneumonia (23 strains, 27.7%), and Pseudomonas aeruginosa (10 strains, 12.0%). Conclusion: The incidence of VAP in China is similar to that in developed counties, with substantial variability in different NICU settings. More efforts are needed to monitor and evaluate the preventable factors associated with VAP and conduct interventions that could effectively reduce the occurrence of VAP.
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Affiliation(s)
- S J Li
- *Department of Neonatology, Children's Hospital of Fudan University, Shanghai 201102, China
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Dong L, Chen CY, Ning B, Xu DL, Gao JH, Wang LL, Yan SY, Cheng S. Pathway-based network analysis of myeloma tumors: monoclonal gammopathy of unknown significance, smoldering multiple myeloma, and multiple myeloma. Genet Mol Res 2015; 14:9571-84. [PMID: 26345890 DOI: 10.4238/2015.august.14.20] [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] [Indexed: 11/03/2022]
Abstract
Although many studies have been carried out on monoclonal gammopathy of unknown significances (MGUS), smoldering multiple myeloma (SMM), and multiple myeloma (MM), their classification and underlying pathogenesis are far from elucidated. To discover the relationships among MGUS, SMM, and MM at the transcriptome level, differentially expressed genes in MGUS, SMM, and MM were identified by the rank product method, and then co-expression networks were constructed by integrating the data. Finally, a pathway-network was constructed based on Kyoto Encyclopedia of Genes and Genomes pathway enrichment analysis, and the relationships between the pathways were identified. The results indicated that there were 55, 78, and 138 pathways involved in the myeloma tumor developmental stages of MGUS, SMM, and MM, respectively. The biological processes identified therein were found to have a close relationship with the immune system. Processes and pathways related to the abnormal activity of DNA and RNA were also present in SMM and MM. Six common pathways were found in the whole process of myeloma tumor development. Nine pathways were shown to participate in the progression of MGUS to SMM, and prostate cancer was the sole pathway that was involved only in MGUS and MM. Pathway-network analysis might provide a new indicator for the developmental stage diagnosis of myeloma tumors.
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Affiliation(s)
- L Dong
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
| | - C Y Chen
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
| | - B Ning
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
| | - D L Xu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
| | - J H Gao
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
| | - L L Wang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
| | - S Y Yan
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
| | - S Cheng
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
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Yan SY, Chen MM, Fan JG, Wang YQ, Du YQ, Hu Y, Xu LM. Therapeutic mechanism of treating SMMC-7721 liver cancer cells with magnetic fluid hyperthermia using Fe₂O₃ nanoparticles. ACTA ACUST UNITED AC 2014. [PMID: 25296356 PMCID: PMC4230284 DOI: 10.1590/1414-431x20143808] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [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: 01/17/2023]
Abstract
This study aimed to investigate the therapeutic mechanism of treating SMMC-7721 liver
cancer cells with magnetic fluid hyperthermia (MFH) using Fe2O3
nanoparticles. Hepatocarcinoma SMMC-7721 cells cultured in vitro
were treated with ferrofluid containing Fe2O3 nanoparticles and
irradiated with an alternating radio frequency magnetic field. The influence of the
treatment on the cells was examined by inverted microscopy, MTT and flow cytometry.
To study the therapeutic mechanism of the Fe2O3 MFH, Hsp70,
Bax, Bcl-2 and p53 were detected by immunocytochemistry and reverse transcription
polymerase chain reaction (RT-PCR). It was shown that Fe2O3 MFH
could cause cellular necrosis, induce cellular apoptosis, and significantly inhibit
cellular growth, all of which appeared to be dependent on the concentration of the
Fe2O3 nanoparticles. Immunocytochemistry results showed that
MFH could induce high expression of Hsp70 and Bax, decrease the expression of mutant
p53, and had little effect on Bcl-2. RT-PCR indicated that Hsp70 expression was high
in the early stage of MFH (<24 h) and became low or absent after 24 h of MFH
treatment. It can be concluded that Fe2O3 MFH significantly
inhibited the proliferation of in vitro cultured liver cancer cells
(SMMC-7721), induced cell apoptosis and arrested the cell cycle at the
G2/M phase. Fe2O3 MFH can induce high Hsp70
expression at an early stage, enhance the expression of Bax, and decrease the
expression of mutant p53, which promotes the apoptosis of tumor cells.
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Affiliation(s)
- S Y Yan
- Department of Gastroenterology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - M M Chen
- Department of Gastroenterology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - J G Fan
- Department of Gastroenterology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Y Q Wang
- Department of Gastroenterology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Y Q Du
- Department of Pathology, Cancer Hospital, Fudan University, Shanghai, China
| | - Y Hu
- Department of Gastroenterology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - L M Xu
- Department of Gastroenterology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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Tan TC, Yan SY, Chua TM, Biswas A, Chong YS. A randomised controlled trial of low-dose misoprostol and dinoprostone vaginal pessaries for cervical priming. BJOG 2010; 117:1270-7. [PMID: 20722643 DOI: 10.1111/j.1471-0528.2010.02602.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVE We studied the efficacy of 25-microg misoprostol pessaries as either single or double dose compared with a 3-mg dinoprostone pessary for cervical priming. DESIGN AND SETTING A randomised controlled trial in Singapore. POPULATION One hundred and seventy-one women with term pregnancies and modified Bishop scores (mBS) < or =6 from 2003 to 2004. METHOD Patients were randomised to single misoprostol dose, double misoprostol dose or the current dinoprostone regimen. MAIN OUTCOME MEASURES Primary outcome was number of women who achieved favourable mBS >6 or active labour by day 2. Secondary outcomes were time interval from insertion to delivery, cardiotocographic abnormalities, delivery and neonatal outcome. RESULTS More women in the misoprostol double-dose group (96.6%) and dinoprostone group (93%) achieved the primary outcome compared with the single-dose group (77.8%) (P = 0.003 and P = 0.03, respectively). There was no difference in secondary outcomes. More multiparous women achieve primary outcome compared with nulliparous women (odds ratio 0.21, 95% confidence interval 0.06-0.77). CONCLUSION Double-dose misoprostol 25 microg is as effective as dinoprostone 3 mg inserts for cervical priming; both are more efficacious than a single-dose misoprostol pessary. Parity prognosticates the success of induction.
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Affiliation(s)
- T-C Tan
- Department of Obstetrics and Gynaecology, KK Women's and Children's Hospital, University Hospital, Singapore
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Abstract
This randomised, crossover study compared patient-controlled sedation using boluses of propofol and patient-maintained sedation using a target-controlled infusion of propofol. Twenty-three patients aged 18-35 years having surgical removal of bilateral third molar teeth under local anaesthesia during two separate visits were studied. In the majority of patients, both techniques provided moderate sedation, good operating conditions, stable physiological parameters and a high degree of patient satisfaction. Two patients became over-sedated during patient-controlled sedation. The time taken for titration to adequate sedation was longer with patient-maintained sedation than with patient-controlled sedation [mean (SD) = 8.6 (3.7) min vs. 5.7 (3.1) min, p < 0.005]. The mean overall propofol consumption was similar with both techniques. The majority of patients preferred patient-maintained sedation to patient-controlled sedation, p < 0.05.
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Affiliation(s)
- M R C Rodrigo
- Department of Anaesthesiology, University of Hong Kong, Room 424, K Block, Queen Mary Hospital, Pokfulam Road, Hong Kong, China.
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Chung SM, Advani SJ, Bradley JD, Kataoka Y, Vashistha K, Yan SY, Markert JM, Gillespie GY, Whitley RJ, Roizman B, Weichselbaum RR. The use of a genetically engineered herpes simplex virus (R7020) with ionizing radiation for experimental hepatoma. Gene Ther 2002; 9:75-80. [PMID: 11850725 DOI: 10.1038/sj.gt.3301620] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2001] [Accepted: 10/16/2001] [Indexed: 11/08/2022]
Abstract
The herpes simplex virus (HSV) recombinant virus R7020 is an attenuated virus designed as a candidate for immunization against both HSV-1 and HSV-2 infections. It was extensively tested in an experimental animal system and in a healthy human adult population without significant untoward effects. We report on the use of R7020 with ionizing radiation as an oncolytic agent for hepatomas. Two hepatoma cell lines were studied, Hep3B and Huh7. R7020 replicated to higher titers in Hep3B cells than in Huh7 cells. Tissue culture studies correlated with hepatoma xenograft responses to R7020. R7020 was more effective in mediating Hep3B tumor xenograft regression compared with Huh7. Ionizing radiation combined with R7020 also showed differential results in antitumor efficacy between the two cell lines in tumor xenografts. Ionizing radiation enhanced the replication of R7020 in Hep3B xenografts. Moreover, the combination of ionizing radiation and virus caused a greater regression of xenograft volume than either R7020 or radiation alone. Ionizing radiation had no effect on the replication of R7020 virus in Huh7 xenografts. These results indicate that a regimen involving infection with an appropriate herpesvirus such as R7020 in combination with ionizing radiation can be highly effective in eradicating certain tumor xenografts.
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Affiliation(s)
- S-M Chung
- Department of Radiation and Cellular Oncology, Pritzker School of Medicine, The University of Chicago, Chicago, IL, USA
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Yan SY. [A historical review and some comments on the nuclear transplantation in fish]. Sheng Wu Gong Cheng Xue Bao 2000; 16:541-7. [PMID: 11191753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
In this review article, a brief history and main results of the studies on the nuclear transplantation (cloning) in fish was introduced. Late Professor T. C. Tung (TONG Di-Zhou), a noted Chinese Experimental Embryologist and his research group at the Institute of Zoology, the Chinese Academy of Sciences (CAS) in Beijing, China initiated and established successful technology of nuclear transplantation in fish in 1963. During the past 36 years, most of the studies on fish cloning were performed mainly by Chinese groups except only one article was published by authors in former USSR (Gasaryan et al. 1979), and the other one was published by Japanese authors in Japan (Niwa et al. 1999). The primary goals of the studies of Tung's group were: (1) to study the inter-relationship between the nucleus and the cytoplasm in terms of the controlling effects determined by nucleus or cytoplasm or both during the ontogenesis, cell differentiation and phenotypic expression in a developing animal; and (2) to produce fish clones of commercial importance for agricultural purposes. The most successful results that have been obtained by Tung's group in collaboration with the investigators at various fisheries institutions in China were the production of nucleocytoplasmic adult hybrid fish between different varieties, species, genera and subfamilies that produced viable offspring. Furthermore, these nucleocytoplasmic fish hybrid revealed that while most phenotypic characteristics are controlled by the nucleus, a few are controlled by the cytoplasm or by both. In addition, the resulting nucleocytoplasmic fish hybrids also showed some better characteristics of economic importance such as faster growth rate, increasing of protein content and reducing of fat content in muscle, etc. So far, no such kinds of evidences are available either in amphibian or in mammals. Another most important result obtained by other Chinese groups showed that the uncultured or cultured adult somatic cell in fish which can support the nuclear transplanted eggs developing into adults. They were: (1) a 17 month old gold-fish obtained by transplanting an adult erythrocytes into an enucleated egg (WU et al. 1982); (2) a subcultured kidney cell nucleus of Crucian carp (Carassius auratus) can support the transplanted enucleated egg of same species developing into a three years old adult with female sexual characteristics (CHEN et al. 1986) and (3) a cultured liver cell nucleus from grass carp (Ctenopharyngoden idellus) can support a nuclear transplanted unfertilized egg of the same species developing into an adult fish at least of one year old when that paper was published. Some discussions and comments for evaluating the results obtained from previous studies and suggestions for further investigations in this research field are also provided. More detailed information could be found in the book--"Cloning in Fish-nucleocytoplasmic Hybrids" which was written by Shaoyi Yan in English and published by International Union of Biological Sciences and Educational and Cultural Press Ltd. Hong Kong in 1998.
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Affiliation(s)
- S Y Yan
- Institute of Developmental Biology, Chinese Academy of Sciences, Beijing 100080
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Advani SJ, Chung SM, Yan SY, Gillespie GY, Markert JM, Whitley RJ, Roizman B, Weichselbaum RR. Replication-competent, nonneuroinvasive genetically engineered herpes virus is highly effective in the treatment of therapy-resistant experimental human tumors. Cancer Res 1999; 59:2055-8. [PMID: 10232586] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
A genetically engineered, nonneurotropic herpes simplex virus (R7020) with a proven safety profile in both animals and humans was found effective in the treatment of large xenotransplanted tumors arising from a radiation- and chemotherapy-resistant human epidermoid carcinoma and a hormone-refractory prostate adenocarcinoma. R7020 replicated to high titer and caused rapid regression of the human tumor xenografts. Tumor destruction was accelerated in animals given both R7020 and fractionated ionizing radiation. Tumors arising from cells surviving one treatment with R7020 were fully susceptible to a second dose of virus. We conclude R7020 is an effective antitumor agent for non-central nervous system tumor xenografts with an excellent safety profile.
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MESH Headings
- Adenocarcinoma/genetics
- Adenocarcinoma/radiotherapy
- Adenocarcinoma/therapy
- Animals
- Carcinoma, Squamous Cell/genetics
- Carcinoma, Squamous Cell/radiotherapy
- Carcinoma, Squamous Cell/therapy
- Dose Fractionation, Radiation
- Drug Resistance, Neoplasm
- Gene Expression Regulation, Viral/radiation effects
- Genes, p53
- Genetic Engineering
- Humans
- Injections, Intralesional
- Male
- Mice
- Mice, Nude
- Prostatic Neoplasms/genetics
- Prostatic Neoplasms/radiotherapy
- Prostatic Neoplasms/therapy
- Radiation Tolerance
- Simplexvirus/genetics
- Simplexvirus/physiology
- Transplantation, Heterologous
- Virus Replication
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Affiliation(s)
- S J Advani
- Department of Radiation and Cellular Oncology, The University of Chicago Hospitals Duchossois Center for Advanced Medicine, Illinois 60637, USA
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Wang SX, Yan SY. [Preoperative diet instruction to patients with esophageal diseases]. Zhonghua Hu Li Za Zhi 1994; 29:608-9. [PMID: 7614576] [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: 01/26/2023]
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14
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Cook EH, Fletcher KE, Wainwright M, Marks N, Yan SY, Leventhal BL. Primary structure of the human platelet serotonin 5-HT2A receptor: identify with frontal cortex serotonin 5-HT2A receptor. J Neurochem 1994; 63:465-9. [PMID: 8035173 DOI: 10.1046/j.1471-4159.1994.63020465.x] [Citation(s) in RCA: 104] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Previous radioligand binding studies have demonstrated human platelet serotonin2A (5-HT2A) receptor binding sites. Pharmacological similarities between platelet and frontal cortex 5-HT2A receptor binding parameters have been demonstrated. However, it is not clear whether the platelet 5-HT2A receptor primary structure is identical to that of the brain receptor. Three overlapping cDNAs were obtained to span completely the coding region of the 5-HT2A receptor. These clones were sequenced with external and internal primers. The nucleotide sequence of human platelet 5-HT2A cDNA was identical to that reported for the human frontal cortex 5-HT2A receptor, except for nucleotide 102 (T-->C), which has been reported to represent a normal DNA polymorphism that does not alter the amino acid sequence. This finding may have implications in the study of neuropsychiatric disorders for which altered platelet 5-HT2A receptor binding has been demonstrated.
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Affiliation(s)
- E H Cook
- Department of Psychiatry, University of Chicago, Illinois 60637
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Cook EH, Arora RC, Anderson GM, Berry-Kravis EM, Yan SY, Yeoh HC, Sklena PJ, Charak DA, Leventhal BL. Platelet serotonin studies in hyperserotonemic relatives of children with autistic disorder. Life Sci 1993; 52:2005-15. [PMID: 7684805 DOI: 10.1016/0024-3205(93)90685-v] [Citation(s) in RCA: 120] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Platelet serotonin (5-HT) studies were conducted with 12 hyperserotonemic and 12 normoserotonemic age-, sex-, and relationship-matched relatives of autistic probands. Each group consisted of 7 mothers, 4 fathers, and 1 sister of autistic children and adolescents. The density (Bmax) of platelet 5-HT2 receptor binding sites, labelled with [3H]-lysergic acid diethylamide (LSD), was significantly lower in 11 hyperserotonemic subjects compared to 12 normoserotonemic subjects (40.9 +/- 13.5 fmol/mg protein, 59.6 +/- 13.2; p < 0.004). The affinity (Kd) for [3H]-LSD binding did not differ. Although the density (Bmax) of [3H]-paroxetine binding did not differ between groups, there was a small difference in the affinity (Kd) for [3H]-paroxetine binding (hyperserotonemic 47.6 +/- 9.0 pM, normoserotonemic 54.8 +/- 12.1; p < 0.05). There were no significant differences in platelet 5-HT uptake, or in thrombin-stimulated 5-HT release. Basal, 5-HT-stimulated, and arginine-vasopressin (AVP)-stimulated inositol phosphate production, as well as basal, prostaglandin E1 (PGE1)-, and forskolin-stimulated cAMP production did not differ. There were significant correlations between whole blood 5-HT levels and LSD Bmax (rs = -0.63, N = 23, p < 0.002) and whole blood 5-HT levels and 5-HT uptake Vmax (rs = 0.56, N = 18, p < 0.02). However, [3H]-LSD labelled 5-HT2 binding and 5-HT uptake were not correlated with each other. Hyperserotonemia of autism may be heterogeneous with one subgroup of subjects with increased 5-HT uptake and another subgroup with decreased 5-HT2 binding.
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Affiliation(s)
- E H Cook
- Department of Psychiatry, University of Chicago, IL 60637
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Yan SY, Mao ZR, Yang HY, Tu MA, Li SH, Huang GP, Li GS, Guo L, Jin GQ, He RF. Further investigation on nuclear transplantation in different orders of teleost: the combination of the nucleus of Tilapia (Oreochromis nilotica) and the cytoplasm of Loach (Paramisgurnus dabryanus). Int J Dev Biol 1991; 35:429-35. [PMID: 1801869] [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
The nucleus of a blastula cell from Tilapia (Oreochromis nilotica, family Cichlidae, order Perciformes) was transplanted into an enucleated egg of Loach (Paramisgurnus dabryanus, family Cobitidae, order Cypriniformes). From among 3747 nucleo-cytoplasmic hybrid (NCH) eggs two NCH larval fish (0.05%) were obtained; one died on the 6th day and the other died on the 12th day after the operation. Morphological examinations showed that both NCH larval fish had developed normally with an opened mouth except they could not take food after complete utilization of their egg yolk on the 5th day of development. The possible mechanisms for obtaining such inter-order NCH larval fish are discussed. This is the first report indicating that inter-order NCH larval fish can be obtained in spite of their evolutionary divergence.
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Affiliation(s)
- S Y Yan
- Institute of Developmental Biology, Academia Sinica, Beijing, China
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Yan SY, Tu M, Yang HY, Mao ZG, Zhao ZY, Fu LJ, Li GS, Huang GP, Li SH, Jin GQ. Developmental incompatibility between cell nucleus and cytoplasm as revealed by nuclear transplantation experiments in teleost of different families and orders. Int J Dev Biol 1990; 34:255-66. [PMID: 2386727] [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: 12/31/2022]
Abstract
Teleosts from different families and orders were used as materials for nuclear transplantation experiments. (1) The nuclei of goldfish (Carassius auratus, family Cyprinidae, order Cypriniformes) were transplanted into the enucleated egg cytoplasm of loach (Paramisgurnus dabryanus, family Cobitidae, order Cypriniformes) and vice-versa. (2) The nuclei of Tilapia (oreochromis nilotica, order Perciformes) were transplanted into the enucleated egg cytoplasm of goldfish (Carassius auratus, order Cypriniformes). The chromosome number of the nucleus donor fish is different from that of the cytoplasmic recipient fish in each of the two combinations. In the first case, only a few early nucleo-cytoplasmic hybrid (NCH) larval fish were obtained in each combination. In second case, even though a high percentage of NCH blastulas were also obtained, the majority of them died at the same developmental stage, except a few which survived until early gastrula stage. The examination of the metaphase chromosome figures of the NCH blastulas or embryos obtained in all three combinations indicated that they were of nucleus-donor type. The developmental rates of all the NCH eggs were similar to those of cytoplasmic-recipient type. Scanning electronmicroscopy examination showed that the morphology of NCH blastula cells, which were obtained from the combination of Tilapia nucleus and goldfish cytoplasm, manifested obviously abnormal features and the cells were arrested at different stages of cell disintegration. Two-dimension polyacrylamide gel electrophoretograms of the homogenates of Tilapia, goldfish and their NCH blastula cells showed that the protein synthetic pattern of NCH blastula was similar to that of Tilapia nucleus type. The results of experiments which failed to obtain NCH adult fish in all three combinations can be explained as a result of developmental incompatibility between the donor nucleus and the enucleated recipient egg cytoplasm, which were from distantly related fish species. And the chromosome numbers of all the component fish of the three combinations which were examined in the experiment and shown to be quite different from each other in the tested fish, should not be overlooked as one of the essential factors causing the developmental incompatibility in NCH fish in this experiment.
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Affiliation(s)
- S Y Yan
- Institute of Developmental Biology, Academia Sinica, Beijing, China
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Yan SY, Li JT. [Enzyme kinetics of cefotaxime hydrolysed by beta-lactamases extracted from gram-negative bacilli]. Zhongguo Yao Li Xue Bao 1988; 9:448-52. [PMID: 3265266] [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: 01/05/2023]
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Yan SY, Li JT. Enzyme kinetic studies with beta-lactamases against cefotaxime and other cephalosporins. Chin Med J (Engl) 1987; 100:940-4. [PMID: 3133166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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Pu QL, Li Y, Yang J, Yan SY. [Study on mass spectra of alkaloids from Sophora alopecuroides L]. Yao Xue Xue Bao 1987; 22:438-44. [PMID: 3450141] [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: 01/05/2023]
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Yan SY, Lu DY, Du M, Li GS, Lin LT, Jin GQ, Wang H, Yang YQ, Xia DQ, Liu AZ. Nuclear transplantation in teleosts. Hybrid fish from the nucleus of crucian and the cytoplasm of carp. Sci Sin B 1984; 27:1029-34. [PMID: 6597566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Hybrid fish are obtained from the combination of nucleus and cytoplasm from two genera of fresh-water teleosts using the technique of nuclear transplantation (i.e. the combination of the nucleus of crucian (Carassius auratus) and the cytoplasm of carp (Cyprinus carpio]. Morphological characteristics of these hybrid fish that have been examined so far indicate that some features such as barbs, pharyngeal teeth, the number of scales along the lateral line, and the number of vertebrae are similar to those of crucian. Some of the hybrid fish grow to normal adult fish.
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