2801
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Symonds E, Young R, Page A, Li H, Blackshaw L. Nutrient sensing receptors and fat transporter expression in the gastrointestinal tract are modulated by a high fat diet in mice. Obes Res Clin Pract 2011. [DOI: 10.1016/j.orcp.2011.08.133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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2802
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Yan C, Zhao S, Li H, Jiang S, Ling J, Zhang Y. Clinical characteristics of fat replacement of left ventricular myocardium. BRITISH HEART JOURNAL 2011. [DOI: 10.1136/heartjnl-2011-300867.605] [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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2803
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Chen L, Zhang W, Fang C, Jiang S, Shu C, Cheng H, Li F, Li H. Polymorphism H558R in the Human Cardiac Sodium Channel SCN5A Gene is Associated with Atrial Fibrillation. J Int Med Res 2011; 39:1908-16. [DOI: 10.1177/147323001103900535] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Atrial fibrillation (AF) is one of the most common sustained cardiac arrhythmias and its prevalence is increasing worldwide in line with the growing elderly population. Many single nucleotide polymorphisms and mutations are associated with AF, including the common loss-of-function histidine-558-to-arginine (H558R) polymorphism of the human cardiac sodium channel, voltage-gated, type V, α subunit (encoded by the SCN5A gene). The H558R polymorphism results from the T-C transition in the SCN5A gene. This study recruited 135 patients with AF and 296 healthy controls to scan for and perform targeted genotyping of the H558R polymorphism of the SCN5A gene. Logistic regression analysis showed that the TC and CC genotypes (i.e. genotypes that result in the R558 polymorphism) were significantly associated with an increased risk of developing AF. The R558 polymorphism conferred an odds ratio for AF of 3.451 (95% confidence interval 1.718, 6.931). In conclusion, this study provided evidence for the role of the H558R polymorphism of the SCN5A gene in increasing the susceptibility to AF.
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2804
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Li H, Bai W, Tang H, Peng Y, Chen Y. The alteration of left annuli movements during cardiac cycle in dilated cardiomyopathy and healthy adults. BRITISH HEART JOURNAL 2011. [DOI: 10.1136/heartjnl-2011-300867.603] [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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2805
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Li H, Ye ZH, Chan WF, Chen XW, Wu FY, Wu SC, Wong MH. Can arbuscular mycorrhizal fungi improve grain yield, As uptake and tolerance of rice grown under aerobic conditions? ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2011; 159:2537-45. [PMID: 21737190 DOI: 10.1016/j.envpol.2011.06.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Revised: 06/13/2011] [Accepted: 06/14/2011] [Indexed: 05/09/2023]
Abstract
The effects of arbuscular mycorrhizal fungi (AMF) -Glomus intraradices and G. geosporum on arsenic (As) and phosphorus (P) uptake by lowland (Guangyinzhan) and upland rice (Handao 502) were investigated in soil, spiked with and without 60 mg As kg(-1). In As-contaminated soil, Guangyinzhan inoculated with G. intraradices or Handao 502 inoculated with G. geosporum enhanced As tolerance, grain P content, grain yield. However, Guangyinzhan inoculated with G. geosporum or Handao 502 inoculated with G. intraradices decreased grain P content, grain yield and the molar ratio of grain P/As content, and increased the As concentration and the ratio of grain/straw As concentration. These results show that rice/AMF combinations had significant (p < 0.05) effects on grain As concentration, grain yield and grain P uptake. The variation in the transfer and uptake of As and P reflected strong functional diversity in AM (arbuscular mycorrhizal) symbioses.
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2806
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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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2807
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Li H, Haudenschild D, Posey K, Hecht J, Di Cesare P, Yik J. Comparative analysis with collagen type II distinguishes cartilage oligomeric matrix protein as a primary TGFβ-responsive gene. Osteoarthritis Cartilage 2011; 19:1246-53. [PMID: 21843649 PMCID: PMC4098880 DOI: 10.1016/j.joca.2011.07.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2011] [Revised: 07/15/2011] [Accepted: 07/25/2011] [Indexed: 02/02/2023]
Abstract
OBJECTIVE This study aims to investigate the regulation of expression of Cartilage oligomeric matrix protein (COMP), which is predominately expressed by chondrocytes and functions to organize the extracellular matrix. Mutations in COMP cause two skeletal dysplasias: pseudoachondroplasia and multiple epiphyseal dysplasia. The mechanism controlling COMP expression during chondrocyte differentiation is still poorly understood. DESIGN Primary human bone marrow-derived stem cells were induced to differentiate into chondrocyte by pellet cultures. We then compared the temporal expression of COMP with the well-characterized cartilage-specific Type II collagen (Col2a1), and their response to transforming growth factor (TGF)β and Sox trio (Sox5, 6, and 9) stimulation. RESULTS COMP and Col2a1 expression are differentially regulated by three distinct mechanisms. First, upregulation of COMP mRNA precedes Col2a1 by several days during chondrogenesis. Second, COMP expression is independent of high cell density but requires TGF-β1. Induction of COMP mRNA by TGF-β1 is detected within 2h in the absence of protein synthesis and is blocked by specific inhibitors of the TGFβ signaling pathway; and therefore, COMP is a primary TFGβ-response gene. Lastly, while Col2a1 expression is intimately controlled by the Sox trio, overexpression of Sox trio fails to activate the COMP promoter. CONCLUSION COMP and Col2a1 expression are regulated differently during chondrogenesis. COMP is a primary response gene of TGFβ and its fast induction during chondrogenesis suggests that COMP is suitable for rapidly accessing the chondrogenic potential of stem cells.
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2808
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Chetty I, Li H, Kumar S, Siddiqui M, Liu D, Wen W, Fraser C, Zhong H, Movsas B, Ajlouni M. Correlation of Dose with Patterns of Failure following SABR-based Treatment of NSCLC. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.165] [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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2809
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Ding L, Wu X, Li H, Luo H, Zhou Y. Study on safety control for Wuhan metro construction in complex environments. INTERNATIONAL JOURNAL OF PROJECT MANAGEMENT 2011. [DOI: 10.1016/j.ijproman.2011.04.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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2810
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Patel J, Landers KA, Li H, Mortimer RH, Richard K. Ontogenic changes in placental transthyretin. Placenta 2011; 32:817-22. [PMID: 21945519 DOI: 10.1016/j.placenta.2011.09.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2011] [Revised: 09/05/2011] [Accepted: 09/06/2011] [Indexed: 10/17/2022]
Abstract
OBJECTIVES Before secretion of fetal thyroid hormone at around 16 weeks gestation normal fetal development depends on a constant supply of maternal thyroid hormone (TH), particularly thyroxine (T(4)). The detailed mechanisms of transplacental delivery of TH are still uncertain. The TH binding protein, transthyretin (TTR), is produced and secreted by placenta and may play a role in this process. The ontogeny of placental TTR is unknown. Our aim was to study changes in placental TTR in early and late pregnancy. STUDY DESIGN We collected placentas from surgically terminated pregnancies between 6 and 17 weeks gestation (n = 44) and from normal term (38-39 weeks) pregnancies following caesarean section (n = 5). Real time-PCR, western blotting and immunohistochemistry were used to determine TTR mRNA and protein levels. RESULTS There were highly significant correlations between gestational age and TTR mRNA (r = 0.974; p < 0.0001) and between gestational age and TTR protein (r = 0.901; p < 0.001) levels between weeks 6 and 13 of gestation. TTR expression did not increase between 13 and 17 weeks and was not different at term. Good correlation was observed between TTR mRNA and TTR protein between individual placental samples (r = 0.916; p < 0.0001). A similar trend was observed using immunohistochemical staining of placental paraffin sections. CONCLUSIONS Our results demonstrate that TTR is expressed in the human placenta from at least 6 weeks gestation. Levels rise during the first trimester at a time when placental oxygen tensions are also rising. We hypothesise that TTR production and secretion by the placenta may facilitate transplacental delivery of TH to the fetus.
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2811
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Li H, Yuan B, Gao Y, Chung CY, Zhu M. Remarkable biocompatibility enhancement of porous NiTi alloys by a new surface modification approach: In-situ nitriding and in vitro and in vivo evaluation. J Biomed Mater Res A 2011; 99:544-53. [DOI: 10.1002/jbm.a.33198] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2010] [Revised: 06/05/2011] [Accepted: 06/07/2011] [Indexed: 11/08/2022]
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2812
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Huang C, Yang G, Jiang T, Zhu G, Li H, Qiu Z. The effects and mechanisms of blockage of STAT3 signaling pathway on IL-6 inducing EMT in human pancreatic cancer cells in vitro. Neoplasma 2011; 58:396-405. [PMID: 21744993 DOI: 10.4149/neo_2011_05_396] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Aberrant Signal transducers and activators of transcription-3 (STAT3) signaling pathway is a major cause of tumor invasion and metastasis; the underlying mechanisms, however, are not well understood. Epithelial-mesenchymal transition (EMT) is an early event that occurs during invasion of cancers of an epithelial origin. It remains elusive whether STAT3signaling pathway is involved in EMT. The objective of this study was to evaluate the effect of blockage of STAT3 signaling pathway on IL-6 inducing EMT in human pancreatic cancer cells. We used SW1990 cells and induced them to undergo EMT by exposing these cells to soluble factor interleukin-6 (IL-6). The expression of Snail, E-cadherin, and Twist was detected by reverse transcription-PCR, real-time PCR, and Western blotting. Cell morphology was observed under invert phase-contrast microscope.The invasion ability was determined by cell invasion assay in vitro. Our results demonstrated that STAT3 signaling pathway was involved in pancreatic cancer cell invasion and EMT, and that EMT induced by IL-6 was associated with the activation of STAT3 signaling pathway. Inhibition of STAT3 signaling pathway by silencing of the STAT3 gene with RNAi blocked STAT3 signaling pathway activation and suppressed EMT in pancreatic cancer cells. Collectively, the STAT3 signaling pathway plays an important role in the process of EMT of pancreatic cancer by regulating Snail gene expression. Better understanding of STAT3 signaling pathways in EMT may contribute to development of novel therapeutic strategies in invasion and metastasis of pancreatic cancer.
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2813
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Yan X, Wang X, Wang Z, Sun S, Chen G, He Y, Mo JQ, Li R, Jiang P, Lin Q, Sun M, Li W, Bai Y, Zhang J, Zhu Y, Lu J, Yan Q, Li H, Guan MX. Maternally transmitted late-onset non-syndromic deafness is associated with the novel heteroplasmic T12201C mutation in the mitochondrial tRNAHis gene. J Med Genet 2011; 48:682-90. [DOI: 10.1136/jmedgenet-2011-100219] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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2814
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Yang B, Wang X, Li H, Li G, Cao Z, Cheng X. Comparison of loop-mediated isothermal amplification and real-time PCR for the diagnosis of tuberculous pleurisy. Lett Appl Microbiol 2011; 53:525-31. [DOI: 10.1111/j.1472-765x.2011.03141.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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2815
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Li H, Chen J, Chen S, Zhang Q, Chen S. Antifibrotic effects of Smad4 small interfering RNAs in injured skeletal muscle after acute contusion. Int J Sports Med 2011; 32:735-42. [PMID: 21913159 DOI: 10.1055/s-0031-1279771] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Muscle injuries are common musculoskeletal problems encountered in sports medicine clinics. In this study, we examined the effect of lentivirus-mediated small interfering RNA (siRNA) targeting Smad4 on the suppression of the fibrosis in injured skeletal muscles. We found that Smad4-siRNA could efficiently knock down the expression of Smad4 in the C2C12 myoblast cells and in the contunded mice gastrocnemius muscle. The expression of mRNA level of Smad4 decreased to 11% and 49% compared to the control group, respectively, and the expression of protein level decreased to 13% and 57% respectively. Moreover, the lentivirus-mediated siRNA was stably transfected only into the skeletal muscle and not into the liver of the animals. In contunded mice gastrocnemius, the collagenous and vimentin-positive area in the Smad4 siRNA group reduced to 36% and 37% compared to the control group, respectively. Furthermore, compared to the scrambled Smad4 siRNA-injected mice and PBS control-injected mice, the muscle function of the mice injected with lentivirus-mediated Smad4 siRNA improved in terms of both fast-twitch and tetanic strength (P<0.05). The results suggest that the gene therapy of inhibiting Smad4 by lentivirus-mediated siRNA could be a useful approach to prevent scar tissue formation and improve the function of injured skeletal muscle.
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2816
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Nguyen B, Li H, Jensen J. Modifiable factors that may increase young men's birth control method awareness. Contraception 2011. [DOI: 10.1016/j.contraception.2011.05.111] [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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2817
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Cheng Y, Long X, Li H. Poster 23: Evaluation of Endoscopy in the Diagnosis and Treatment of Obstructive Salivary Gland Diseases. J Oral Maxillofac Surg 2011. [DOI: 10.1016/j.joms.2011.06.123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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2818
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Li B, Zhang J, Yang F, Li H, Liu J. 9053 POSTER Which is the Optimal Biologically Effective Dose of Stereotactic Body Radiotherapy for Stage I Non-small-cell Lung Cancer? Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)72365-6] [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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2819
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Guo L, Sun B, Shang Z, Leng L, Wang Y, Wang N, Li H. Comparison of adipose tissue cellularity in chicken lines divergently selected for fatness. Poult Sci 2011; 90:2024-34. [DOI: 10.3382/ps.2010-00863] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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2820
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Li H, Wang R, Preamplume G, Zheng H. Structural studies of a CRISPR RNA processing endonuclease. Acta Crystallogr A 2011. [DOI: 10.1107/s010876731109605x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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2821
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Wang W, Jiang L, Zuo S, Wang S, Li H, Zhu K, Wang J, Chen X. Growth of transition metal doped AlN single crystal and its stimulated emission. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311089756] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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2822
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Hotta K, Chen X, Paton RS, Minami A, Li H, Swaminathan K, Mathews I, Watanabe K, Oikawa H, Houk KN, Kim CY. Structural study of enzymatic anti-Baldwin ring closure in polyether formation. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311094645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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2823
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Zhu S, Zhang Y, Bai G, Li H. Necrostatin-1 ameliorates symptoms in R6/2 transgenic mouse model of Huntington's disease. Cell Death Dis 2011; 2:e115. [PMID: 21359116 PMCID: PMC3043604 DOI: 10.1038/cddis.2010.94] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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2824
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Fan YH, Dong H, Pan Q, Cao YJ, Li H, Wang HC. Notch signaling may negatively regulate neonatal rat cardiac fibroblast-myofibroblast transformation. Physiol Res 2011; 60:739-48. [PMID: 21812518 DOI: 10.33549/physiolres.932149] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Cardiac fibroblast-myofibroblast transformation (CMT) is a critical event in the initiation of myocardial fibrosis. Notch signaling has been shown to regulate myofibroblast transformation from other kinds of cells. However, whether Notch signaling is also involved in CMT remains unclear. In the present study, expressions of Notch receptors in cardiac fibroblasts (CFs) were examined, effects of Notch signaling inhibitor N-[N-(3,5-difluorophenacetyl)-l-alanyl]-S-phenylglycine t-butyl ester (DAPT) and transforming growth factor-beta1 (TGF-beta1) on CMT were determined by increasing alpha-smooth muscle actin (alpha-SMA) expression and collagen synthesis, and Notch signaling was examined by analyzing expressions of Notch receptors. The results showed that: (1) Notch receptor 1, 2, 3 and 4 were all expressed in CFs; (2) DAPT promoted CMT in a time-dependent manner; (3) During the period of CMT induced by TGF-beta1, expressions of Notch receptor 1, 3 and 4 in CFs were down-regulated, whereas there was no change for Notch receptor 2. Moreover, the downtrends of Notch 1, 3 and 4 were corresponding to the trend growth of alpha-SMA expression and collagen synthesis. These results suggested that inhibiting of Notch signaling might promote CMT. The down-regulations of Notch receptor 1, 3 and 4 induced by TGF-beta1 may facilitate CMT. In conclusion, inhibition of Notch signaling might be a novel mechanism of CMT in myocardial fibrosis.
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2825
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Gomathinayagam S, Mitchell T, Zartler ER, Heiss C, Azadi P, Zha D, Houston-Cummings NR, Jiang Y, Li F, Giaccone E, Porambo RJ, Anderson CL, Sethuraman N, Li H, Stadheim TA. Structural elucidation of an -1,2-mannosidase resistant oligosaccharide produced in Pichia pastoris. Glycobiology 2011; 21:1606-15. [DOI: 10.1093/glycob/cwr082] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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