4201
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Hsu FC, Sides EG, Mychaleckyj JC, Worrall BB, Elias GA, Liu Y, Chen WM, Coull BM, Toole JF, Rich SS, Furie KL, Sale MM. Transcobalamin 2 variant associated with poststroke homocysteine modifies recurrent stroke risk. Neurology 2011; 77:1543-50. [PMID: 21975197 DOI: 10.1212/wnl.0b013e318233b1f9] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
OBJECTIVES The Vitamin Intervention for Stroke Prevention trial found an association between baseline poststroke homocysteine (Hcy) and recurrent stroke. We investigated genes for enzymes and cofactors in the Hcy metabolic pathway for association with Hcy and determined whether associated single nucleotide polymorphisms (SNPs) influenced recurrent stroke risk. METHODS Eighty-six SNPs in 9 candidate genes (BHMT1, BHMT2, CBS, CTH, MTHFR, MTR, MTRR, TCN1, and TCN2) were genotyped in 2,206 subjects (83% European American). Associations with Hcy measures were assessed using linear regression models assuming an additive genetic model, adjusting for age, sex, and race and additionally for baseline Hcy when postmethionine load change was assessed. Associations with recurrent stroke were evaluated using survival analyses. RESULTS Five SNPs in the transcobalamin 2 (TCN2) gene were associated with baseline Hcy (false discovery rate [FDR]-adjusted p = 0.049). TCN2 SNP rs731991 was associated with recurrent stroke risk in the low-dose arm of the trial under a recessive model (log-rank test p = 0.009, hazard ratio 0.34). Associations with change in postmethionine load Hcy levels were found with 5 SNPs in the cystathionine β-synthase (CBS) gene (FDR-adjusted p < 0.031). CONCLUSIONS TCN2 variants contribute to poststroke Hcy levels, whereas variants in the CBS gene influence Hcy metabolism. Variation in the TCN2 gene also affects recurrent stroke risk in response to cofactor therapy.
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4202
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Li Z, Chang G, Yao C, Guo L, Liu Y, Wang M, Liu D, Wang S. Endovascular Stenting of Extracranial Carotid Artery Aneurysm: A Systematic Review. Eur J Vasc Endovasc Surg 2011; 42:419-26. [DOI: 10.1016/j.ejvs.2011.05.008] [Citation(s) in RCA: 122] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2011] [Accepted: 05/06/2011] [Indexed: 02/06/2023]
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4203
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Lian K, Huang Q, Xu A, Jin W, Xia C, Wang R, Liu Y, Ma Y, Sun L. Adiponectin multimers and their bioactivities were down-regulated in newly diagnosed Chinese type 2 diabetes patients. BRITISH HEART JOURNAL 2011. [DOI: 10.1136/heartjnl-2011-300867.212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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4204
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Sun L, He Y, Liu Y, Gao C, Yang Q, Tao L. Nitrative inactivation resistant human thioredoxin-1 Y49F mutant strengthens the inhibition of ASK-1 mediated apoptosis. BRITISH HEART JOURNAL 2011. [DOI: 10.1136/heartjnl-2011-300867.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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4205
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Liu Y, Zhu G, Xie L, Zhou J, Zhang S, Guan X. Comparison of NCI CTCAE 3.0 and CTCAE 4.0 in Assessing Acute Oral Mucositis Caused by Chemoradiation for Locally Advanced Nasopharyngeal Carcinoma. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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4206
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Rockwell S, Liu Y, Glazer P, Sartorelli A. Preclinical Studies of Onrigen in Combination with Radiation. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.1249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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4207
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Pei H, Liu Y, Zhang H, Wang R, Xia C, Lian K, Lu X, Feng S, Xu A, Yang Q, Wang H, Tao L. Insulin treatment increases both plasma and cardiac adiponectin levels and thus reduces myocardial ischemia/reperfusion injury in type 1 diabetic mice. BRITISH HEART JOURNAL 2011. [DOI: 10.1136/heartjnl-2011-300867.86] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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4208
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Chen LY, Eberlein M, Alsaaty S, Martinez-Anton A, Barb J, Munson PJ, Danner RL, Liu Y, Logun C, Shelhamer JH, Woszczek G. Cooperative and redundant signaling of leukotriene B4 and leukotriene D4 in human monocytes. Allergy 2011; 66:1304-11. [PMID: 21605126 DOI: 10.1111/j.1398-9995.2011.02647.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Leukotriene B(4) (LTB(4)) and cysteinyl leukotrienes (cysLTs) are important immune mediators, often found concomitantly at sites of inflammation. Although some of the leukotriene-mediated actions are distinctive (e.g., bronchial constriction for cysLTs), many activities such as leukocyte recruitment to tissues and amplification of inflammatory responses are shared by both classes of leukotrienes. OBJECTIVE We used human monocytes to characterize leukotriene-specific signaling, gene expression signatures, and functions and to identify interactions between LTB(4)- and cysLTs-induced pathways. METHODS Responsiveness to leukotrienes was assessed using oligonucleotide microarrays, real-time PCR, calcium mobilization, kinase activation, and chemotaxis assays. RESULTS Human monocytes were found to express mRNA for high- and low-affinity LTB(4) receptors, BLT(1) and BLT(2), but signal predominantly through BLT(1) in response to LTB(4) stimulation as shown using selective agonists, inhibitors, and gene knock down experiments. LTB(4) acting through BLT(1) coupled to G-protein α inhibitory subunit activated calcium signaling, p44/42 mitogen-activated protein kinase, gene expression, and chemotaxis. Twenty-seven genes, including immediate early genes (IEG), transcription factors, cytokines, and membrane receptors were significantly up-regulated by LTB(4). LTB(4) and LTD(4) had similar effects on signaling, gene expression, and chemotaxis indicating redundant cell activation pathways but costimulation with both lipid mediators was additive for many monocyte functions. CONCLUSION Leukotriene B(4) and LTD(4) display both redundant and cooperative effects on intracellular signaling, gene expression, and chemotaxis in human monocytes. These findings suggest that therapies targeting either leukotriene alone may be less effective than approaches directed at both.
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4209
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Liu Y, Zhao X. The epidemiological study of the prevalence and risk factors of hypertension among residents of Oroqen nationality. BRITISH HEART JOURNAL 2011. [DOI: 10.1136/heartjnl-2011-300867.265] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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4210
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Yu GB, Liu Y, Yu S, Wu SC, Leung AOW, Luo XS, Xu B, Li HB, Wong MH. Inconsistency and comprehensiveness of risk assessments for heavy metals in urban surface sediments. CHEMOSPHERE 2011; 85:1080-7. [PMID: 21862100 DOI: 10.1016/j.chemosphere.2011.07.039] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2010] [Revised: 06/23/2011] [Accepted: 07/18/2011] [Indexed: 05/06/2023]
Abstract
Numerous indices have been developed to assess environmental risk of heavy metals in surface sediments, including the total content based geoaccumulation index (I(geo)), exchangeable fraction based risk assessment code (RAC), and biological toxicity test based sediment quality guidelines (SQGs). In this study, the three indices were applied to freshwater surface sediments from 10 sections along an urbanization gradient of the Grand Canal, China to assess the environmental risks of heavy metals (Cu, Pb, Zn, Cd, and Cr) and to understand discrepancies of risk assessment indices and urbanization effects regarding heavy metal contamination. Results showed that Cd, Zn, and Pb were the most enriched metals in urban sections assessed by I(geo) and over 95% of the samples exceeded the Zn and Pb thresholds of the effect range low (ERL) of SQGs. According to RAC, Cu, Zn, Cd, and Cr had high risks of adversely affecting the water quality of the Grand Canal due to their remarkable portions of exchangeable fraction in surface sediment. However, Pb showed a relative low risk, and was largely bounded to Fe/Mn oxides in the urban surface sediments. Obviously, the three assessment indices were not consistent with each other in terms of predicting environmental risks attributed to heavy metals in the freshwater surface sediments of this study. It is recommended that risk assessment by SQGs should be revised according to availability and site specificity. However, the combination of the three indices gave us a comprehensive understanding of heavy metal risks in the urban surface sediments of the Grand Canal.
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4211
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Sun L, He Y, Jin W, Liu Y, Zhang H, Xia C, Wang R, Lian K, Lu X, Xu A, Wang H, Tao L. Nitrative inactivation resistant human Thioredoxin-1 Y49F mutant strengthens the Thioredoxin-1's inhibition on ASK-1 mediated apoptosis. BRITISH HEART JOURNAL 2011. [DOI: 10.1136/heartjnl-2011-300867.248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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4212
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Liu Y, Lou G, Wu W, Zheng M, Shi Y, Zhao D, Chen Z. Involvement of the NF-κB pathway in multidrug resistance induced by HBx in a hepatoma cell line. J Viral Hepat 2011; 18:e439-46. [PMID: 21914061 DOI: 10.1111/j.1365-2893.2011.01463.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
It is widely believed that hepatocellular cancer (HCC), especially HBV associated HCC, is highly resistant to chemotherapy. To investigate the molecular influence of HBx protein on multidrug resistance (MDR) in HCC and the potential role of the NF-κB pathway in this process. We established HBx-expressing cells by liposome-mediated transfection of the HBx into the HepG2 cell line. We found that HBx expression in HCC cells induces drug resistance against multiple drugs, a significantly lower apoptosis ratio in HepG2-HBx and HepG2.2.15 cells, compared with HepG2 and HepG2-3.1 cells (P < 0.05) after treating with 5-FU or adriamycin. And compared with the control group, the HBx-transfected cells showed a higher expression of MDR-associated and anti-apoptotic genes. Furthermore, we found that the NF-κB activity was remarkably high in the HBx-expressing cells as measured by p65 nuclear localization. In addition, the upregulated anti-apoptotic genes, Gadd45b and Survivin, in HBx-expressing HCC cells were downregulated by IMD-0354 treatment, which is the NF-κB pathway inhibitor. Taken together, these results suggest that HBx protein might be one of the causes for the occurrence of MDR in HCC, and the NF-κB pathway might be involved in this change.
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4213
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Yang Q, Gao C, Zhang H, Liu Y, Lu X, Feng S, Liu J, Liu P, Wang H, Lu S, Lu Y, Wang H, Tao L. Resveratrol attenuates myocardial ischemia/reperfusion injury via upregulating adiponectin level and multimerisation in type 2 diabetic mice. BRITISH HEART JOURNAL 2011. [DOI: 10.1136/heartjnl-2011-300867.85] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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4214
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Li Z, Chang G, Yao C, Guo L, Liu Y, Wang M, Liu D, Wang S. Endovascular Stenting of Extracranial Carotid Artery Aneurysm: A Systematic Review. J Vasc Surg 2011. [DOI: 10.1016/j.jvs.2011.08.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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4215
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Li H, Jiang Y, Liu Y. Enrichment and Determination of Trace Estradiol in Environmental Water Samples by Hollow-Fiber Liquid-Phase Microextraction Prior to HPLC. J Chromatogr Sci 2011; 49:676-82. [DOI: 10.1093/chrsci/49.9.676] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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4216
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Gao C, Liu Y, Yang Q, Liu J, Liu P, Wang H, Guo Y, Zhang L, Lu S, Lu Y, Wang H, Tao L. Upregulation of adiponectin is involved in the cardioprotective effect of etanercept in myocardial ischemia/reperfusion (MI/R) mice. BRITISH HEART JOURNAL 2011. [DOI: 10.1136/heartjnl-2011-300867.87] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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4217
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Nieskens DL, Ferrari D, Liu Y, Kolonko R. The conversion of carbon dioxide and hydrogen into methanol and higher alcohols. CATAL COMMUN 2011. [DOI: 10.1016/j.catcom.2011.07.020] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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4218
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Liu Y, Flynn R, Kim Y, Wu X. Dynamic-shield Intensity Modulated Brachytherapy (IMBT) for Cervical Cancer. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.364] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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4219
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Liu H, Wang L, Jin Z, Yang S, Ma D, Luo J, Liu Y, Yang Y. The safety and efficacy of dual axis rotational angiography in the diagnosis of coronary artery disease in the Chinese population. BRITISH HEART JOURNAL 2011. [DOI: 10.1136/heartjnl-2011-300867.450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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4220
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Fu W, Cheng Y, Li Y, Liao R, Li T, Liu Y. Effects of intervention therapy on tricuspid valve in membranous septal defect. BRITISH HEART JOURNAL 2011. [DOI: 10.1136/heartjnl-2011-300867.600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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4221
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Schmidt M, Winter KD, Dantzer V, Li J, Kragh PM, Du Y, Lin L, Liu Y, Vajta G, Sangild PT, Callesen H, Agerholm JS. Maternal endometrial oedema may increase perinatal mortality of cloned and transgenic piglets. Reprod Fertil Dev 2011; 23:645-53. [PMID: 21635813 DOI: 10.1071/rd10220] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2010] [Accepted: 02/02/2011] [Indexed: 01/13/2023] Open
Abstract
The perinatal mortality of cloned animals is a well-known problem. In the present retrospective study, we report on mortality of cloned transgenic or non-transgenic piglets produced as part of several investigations. Large White (LW) sows (n = 105) received hand-made cloned LW or minipig blastocysts and delivered either spontaneously or after prostaglandin induction followed by either Caesarean section or vaginal birth. The overall pregnancy rate was 62%, with 26% of pregnancies terminating before term. This resulted in 48 deliveries. The terminated pregnancies consisted of 12 abortions that occurred at 35 ± 2 days gestation and five sows that went to term without returning to heat and then by surgery showed the uterus without fetal content. The gestation length was for sows with LW piglets that delivered by Caesarean section or vaginally was 115.7 ± 0.3 and 117.6 ± 0.4 days, respectively. In sows with minipiglets, the gestation length for those delivered by Caesarean section or vaginally 114.4 ± 0.2 and 115.5 ± 0.3 days, respectively. Of the 34 sows that delivered vaginally, 28 gave birth after induction, whereas 6 farrowed spontaneously. Of the 14 sows that delivered after Caesarean section and in the five empty sows, the endometrium and placenta showed severe oedema. Piglet mortality following vaginal delivery was higher than after Caesarean section (31% v. 10%, respectively; P < 0.001). When vaginal delivery occurred spontaneously, the stillborn rate was greater than after induced delivery (56% v. 24%, respectively; P < 0.0001). Internal organ weights were recorded for seven cloned LW piglets and six normal piglets. The relative weight of the heart, liver, kidneys and small intestine was found to be reduced in the cloned piglets (P < 0.05). The present study demonstrates extensive endometrial oedema in sows pregnant with cloned and transgenic piglets, as well as in empty recipients, at term. The growth of certain organs in some of the cloned piglets was reduced and the rate of stillborn piglets was greater in cloned and transgenic piglets delivered vaginally, possibly because of oedema of the fetal-maternal interface.
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4222
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Abstract
OBJECTIVE The aim of the article is to summarize experience in the pathology, diagnosis and treatment of spermatic cord liposarcoma (SCL). METHODS The clinical data of a patient with liposarcoma of the spermatic cord was reviewed in combination with related literature. RESULTS A 24-year-old male presented with a 1-year history of a mass in the right hemiscrotum. The tumor was resected and right inguinal orchidectomy was performed. The tumor had not recurred after 6 months follow-up. CONCLUSION Spermatic cord liposarcoma (SCL) is a rare medical condition and it is therefore difficult to establish guidelines for treatment, diagnosis and prognosis. Radical orchidectomy with wide local excision of the mass is the recommended therapy, while adjuvant radiotherapy may be considered in intermediate or high-grade tumors and recurrent liposarcomas. The role of chemotherapy is not well-defined.
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4223
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Vartanyants IA, Singer A, Mancuso AP, Yefanov OM, Sakdinawat A, Liu Y, Bang E, Williams GJ, Cadenazzi G, Abbey B, Sinn H, Attwood D, Nugent KA, Weckert E, Wang T, Zhu D, Wu B, Graves C, Scherz A, Turner JJ, Schlotter WF, Messerschmidt M, Lüning J, Acremann Y, Heimann P, Mancini DC, Joshi V, Krzywinski J, Soufli R, Fernandez-Perea M, Hau-Riege S, Peele AG, Feng Y, Krupin O, Moeller S, Wurth W. Coherence properties of individual femtosecond pulses of an x-ray free-electron laser. PHYSICAL REVIEW LETTERS 2011; 107:144801. [PMID: 22107200 DOI: 10.1103/physrevlett.107.144801] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2011] [Indexed: 05/31/2023]
Abstract
Measurements of the spatial and temporal coherence of single, femtosecond x-ray pulses generated by the first hard x-ray free-electron laser, the Linac Coherent Light Source, are presented. Single-shot measurements were performed at 780 eV x-ray photon energy using apertures containing double pinholes in "diffract-and-destroy" mode. We determined a coherence length of 17 μm in the vertical direction, which is approximately the size of the focused Linac Coherent Light Source beam in the same direction. The analysis of the diffraction patterns produced by the pinholes with the largest separation yields an estimate of the temporal coherence time of 0.55 fs. We find that the total degree of transverse coherence is 56% and that the x-ray pulses are adequately described by two transverse coherent modes in each direction. This leads us to the conclusion that 78% of the total power is contained in the dominant mode.
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4224
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Li J, Lin H, Zhu X, Li L, Wang X, Sun W, Wu X, Liu A, Niu F, Wang Y, Liu Y. Association study of functional polymorphisms in serotonin transporter gene with temporal lobe epilepsy in Han Chinese population. Eur J Neurol 2011; 19:351-3. [DOI: 10.1111/j.1468-1331.2011.03521.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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4225
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Liu Y, Gong W, Breinholt J, Norskov-Lauritsen L, Zhang J, Ma Q, Chen J, Panina S, Guo W, Li T, Zhang J, Kong M, Liu Z, Mao J, Christensen L, Hu S, Wang L. Discovery of the improved antagonistic prolactin variants by library screening. Protein Eng Des Sel 2011; 24:855-60. [DOI: 10.1093/protein/gzr047] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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