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Karlik J, Bao Y, Cheng B, Lees S, Ndao D, Ladas E, Kelly K. P04.40. Lifestyle therapy use in pediatric cancer survivors. Altern Ther Health Med 2012. [PMCID: PMC3373523 DOI: 10.1186/1472-6882-12-s1-p310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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152
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Bao Y, Wang J, He F, Ma H, Wang H. Molecular cytogenetic identification of a wheat (Triticum aestivum)-American dune grass (Leymus mollis) translocation line resistant to stripe rust. Genet Mol Res 2012; 11:3198-206. [PMID: 22653669 DOI: 10.4238/2012.may.22.2] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Leymus mollis, a perennial allotetraploid (2n = 4x = 28), known as American dune grass, is a wild relative of wheat that could be useful for cultivar improvement. Shannong0096, developed from interspecific hybridization between common wheat cv. Yannong15 and L. mollis, was analyzed with cytological procedures, genomic in situ hybridization, stripe-rust resistance screening and molecular marker analysis. We found that Shannong0096 has 42 chromosomes in the root-tip cells at mitotic metaphase and 21 bivalents in the pollen mother cells at meiotic metaphase I, demonstrating cytogenetic stability. Genomic in situ hybridization probed with total genomic DNA from L. mollis gave strong hybridization signals in the distal region of two wheat chromosome arms. A single dominant Yr gene, derived from L. mollis and temporarily designated as YrSn0096, was found on the long arm of chromosome 4A of Shannong0096. YrSn0096 should be a novel Yr gene because none of the previously reported Yr genes on chromosome 4A are related to L. mollis. This gene was found to be closely linked to the loci Xbarc236 and Xksum134 with genetic distances of 5.0 and 4.8 cM, respectively. Based on data from 267 F(2) plants of Yannong15/Huixianhong, the linkage map of YrSn0096, using the two molecular markers, was established in the order Xbarc236-YrSn0096-Xksum134. Shannong0096 appeared to be a unique wheat-L. mollis translocation with cryptic alien introgression. Cytogenetic stability, a high level of stripe-rust resistance, the common wheat background, and other positive agronomic traits make it a desirable donor for introducing novel alien resistance genes in wheat breeding programs, with the advantage of molecular markers that can be used to confirm introgression.
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Affiliation(s)
- Y Bao
- Agronomy College, State Key Laboratory of Crop Science, Shandong Key Laboratory of Crop Science, Tai'an Subcenter of National Wheat Improvement Center, Shandong Agricultural University, Tai'an, China
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Abstract
Interleukin (IL)-13 plays an important role in the pathogenesis of asthma. A polymorphic variant of human IL-13 R130Q, results in substitution of an arginine with a glutamine was shown to be associated with asthma in Chinese Han nationality. We examined the functional consequences of this variant in vitro to investigate whether this variant enhanced functional activity compared with wild type IL-13. The wild-type and mutant IL-13 genes were amplified from the plasmid of pET22b-hIL-13 by PCR and site-directed mutagenesis PCR. Both the PCR product and the vector pET28a(+) were digested by the NdeI and BamHI. Then the PCR product was cloned in the prokaryotic expression vector of pET28a(+). The plasmids were constructed and transformed into E. coli BL21(DE3). The positive clones were selected, and tested by sequencing. Peripheral blood mononuclear cells (PBMCs) from healthy participants were isolated and cultured with increasing concentrations of recombinant WT IL-13 and IL-13 R130Q. IgE was detected with ELISA kit in the supernatants. Recombinant WT IL-13 and IL-13 R130Q were successfully expressed into the prokaryotic expression system and their biological activity was consistent with standard protein. Our results show that IL-13 R130Q is more active than WT IL-13 in inducing hydrocortisone-dependent IgE synthesis. There were statistical significances between them. IgE induction by physiologic concentrations was obviously increased. IL-13 R130Q has increased activity compared with wild type IL-13 in vitro. And IL-13 R130Q may be used for new target of asthma for diagnosis and therapy in the future.
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Affiliation(s)
- Y Chu
- Department of Pediatrics, Xin Hua Hospital affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
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154
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Li M, Liu Q, Liu J, Cheng R, Zhang H, Xue H, Bao Y, Yao Z. Mutations analysis in filaggrin gene in northern China patients with atopic dermatitis. J Eur Acad Dermatol Venereol 2012; 27:169-74. [PMID: 22220561 DOI: 10.1111/j.1468-3083.2011.04435.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
BACKGROUND Recently, we have reported filaggrin mutations (FLG) of atopic dermatitis in southern China. However, there have been few detailed reports of FLG mutations of patients with AD in northern China by now. OBJECTIVES The present aim was to establish the mutation spectrum of FLG gene in AD patients in northern China. METHODS A total of 339 cases met Hanifin and Rajka diagnostic criteria of AD were recruited. A comprehensive sequencing of the entire FLG coding region in these patients was conducted. All detected FLG null mutations were screened in a cohort of 301 normal controls. RESULTS Seven novel mutations (478insA, Q1070X, 4026delT, Q1712X, Q2397X, 7145del4 and 8001del4) and eleven reported mutations (3222del4, 3321delA, 4271delAA, S1515X, Q1790X, 5757del4, 6834del5, Q2417X, E2422X, 7945delA and K4671X) in AD were identified. Mutations 3321delA and K4671X were two of the most common mutations in AD. FLG null mutations were present in 26.0% of AD patients. FLG null alleles (compound genotypes) were significantly higher in AD (P < 0.001) than in the controls. The compound genotypes for all FLG variants were significantly associated with IV (P < 0.001) and palmar hyperlinearity (P < 0.001). The common mutation, K4671X, was significantly associated with AD-coexistent allergic rhinitis (P = 0.005). CONCLUSIONS Our study increases the total number of FLG mutations. We clearly demonstrated that FLG loss-of-function mutations were significantly associated with AD in northern China. The FLG null mutations in the Chinese population differed not only from that in the European population but also from that in sub-populations of Asians outside of the Chinese mainland.
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Affiliation(s)
- M Li
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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155
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Bao Y, Ryan A, Shao H, Pincus H, Donohue J. P-951 - Medicare Part D, generic prescribing and adherence to antidepressant therapy. Eur Psychiatry 2012. [DOI: 10.1016/s0924-9338(12)75118-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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156
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157
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Wang Y, Ma X, Zhou M, Zong W, Zhang L, Hao Y, Zhu J, Xiao Y, Li D, Bao Y, Jia W. Contribution of visceral fat accumulation to carotid intima-media thickness in a Chinese population. Int J Obes (Lond) 2011; 36:1203-8. [PMID: 22124446 PMCID: PMC3448043 DOI: 10.1038/ijo.2011.222] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Objective: Recent observational studies have reported that body fat distribution might be differentially associated with subclinical atherosclerosis. We previously reported that visceral fat area (VFA) ⩾80 cm2 is the optimal cutoff for identifying abdominal obesity in Chinese subjects. We examined whether VFA ⩾80 cm2 reflects the association between abdominal obesity and subclinical atherosclerosis, and if determination of the visceral fat quantity is useful for assessing subclinical atherosclerosis in asymptomatic individuals. Methods and results: Participants (N=1005, men 515, women 490, 34–66 years) free of cardiovascular disease underwent magnetic resonance imaging and carotid ultrasound assessment to quantify VFA and carotid intima–media thickness (C-IMT). Overweight/obese subjects (body mass index (BMI) ⩾25.0 kg m−2) had a higher C-IMT than lean subjects (BMI <25.0 kg m−2) (P<0.01). Subjects with VFA ⩾80 cm2 had significantly higher C-IMT than those without abdominal obesity regardless of BMI (P<0.01). By multivariate regression analysis adjusted for anthropometric measurements and cardiovascular risk factors, waist circumference but not BMI was independently correlated with C-IMT in men (P<0.001). Similar findings were observed with an accurate obesity indices adjusted model, which showed that VFA was an independent risk factor for increased C-IMT in men but not in women. Conclusions: VFA ⩾80 cm2 effectively identified carotid atherosclerosis for both lean and obese individuals in middle-aged Chinese men.
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Affiliation(s)
- Y Wang
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, China
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158
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Li H, Bao Y, Zhao Z. Expression of tachykinin receptors inXenopus oocytes injected with poly (A)(+) RNA from cat dorsal root ganglion. ACTA ACUST UNITED AC 2011; 41:139-45. [PMID: 18726197 DOI: 10.1007/bf02882718] [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] [Received: 07/17/1997] [Indexed: 11/29/2022]
Abstract
The expression of the types of tachykinin receptors in the dorsal root ganglion (DRG) neurons by means ofXenopus oocyte expressing system was studied. Poly(A)(+) RNAs were extracted from cat cervical and lumbar DRG. Two days after injection of Poly (A)(+) RNAs, the oocytes were recorded with the two-electrode voltage clamp technique. In the oocytes injected with DRG poly(A)(+) RNA, [Sar(9), Met(O(2))(11)]-substance P(Sar -SP, 1 mumol/L), neurokinin A (NKA, 1 mumol/L) or [beta-Ala(8)]-neurokinin A((4-10)) (Ala-NKA, 1 mumol/L) produced an inward current comprising a rapid spike and a long sustained oscillatory component for several minutes. Sar-SP induced response was blocked by NK-1 antagonist L-668, 169 (1 mumol/L), but not by NK-2 antagonist L-659, 877(1mumol/L). In contrast, Ala-NKA and NKA responses were only blocked by L-659, 877. The oocytes injected with DH Poly(A)(+)RNA also responded to Sar-SP and NKA with similar inward currents, which were selectively blocked by L-668, 169 and L-659, 877, respectively. These tachykinins-induced responses had a potent desensitization. The present data indicate expression of NK-1 and NK-2 receptors in DRG neurons, suggesting that there may be tachykinin autoreceptors on the nociceptive primary afferent terminals.
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Affiliation(s)
- H Li
- Shanghai Brain Research Institute, Chinese Academy of Sciences, 200031, Shanghai, China
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Wang L, Bao Y, Xu Y, Yang Y, Wang L, Si S, Cho S, Hong B. 148 SALVIANOLIC ACID B CAN INHIBIT MACROPHAGE UPTAKE OF MODIFIED-LDL BY DIRECTLY BINDING TO TYPE B SCAVENGER RECEPTOR CD36. ATHEROSCLEROSIS SUPP 2011. [DOI: 10.1016/s1567-5688(11)70149-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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160
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Jackson J, Whitney G, Hamid O, Schmidt H, Chasalow SD, Alaparthy S, Bao Y, Shahabi V. Assessment of association between BRAF mutation status in melanoma tumors and response to ipilimumab. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.2587] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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161
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Yu W, Hu C, Zhang R, Wang C, Qin W, Lu J, Jiang F, Tang S, Bao Y, Xiang K, Jia W. Effects of KCNQ1 polymorphisms on the therapeutic efficacy of oral antidiabetic drugs in Chinese patients with type 2 diabetes. Clin Pharmacol Ther 2011; 89:437-42. [PMID: 21289621 DOI: 10.1038/clpt.2010.351] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The aim of this study was to explore the impact of KCNQ1 variants on the responses to oral antidiabetic drugs in a Chinese study population. A 48-week randomized pharmacogenetics study compared the effects of repaglinide and rosiglitazone in 209 newly diagnosed patients with type 2 diabetes. In the repaglinide cohort, individuals who were rs2237892 TT homozygotes exhibited lower 2-h glucose levels and significantly higher cumulative attainment rates of target 2-h glucose levels (P(log-rank) = 0.0383) than the C allele carriers; patients with a greater number of rs2237892 C alleles showed larger augmentations in both fasting insulin and homeostasis model assessment of insulin resistance (HOMA-IR) (P = 0.0166 and 0.0026, respectively); moreover, the rs2237895 C allele was also associated with greater increments in both fasting insulin and HOMA-IR (P = 0.0274 and 0.0259, respectively). In contrast, only an association between rs2237897 and decrease in 2-h glucose levels was detected in the rosiglitazone cohort (P = 0.0321). Our results indicated that KCNQ1 polymorphisms are associated with repaglinide efficacy, and might also be associated with rosiglitazone response, in Chinese patients with type 2 diabetes.
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Affiliation(s)
- W Yu
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, People's Republic of China
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162
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Mracek T, Stephens NA, Gao D, Bao Y, Ross JA, Rydén M, Arner P, Trayhurn P, Fearon KCH, Bing C. Enhanced ZAG production by subcutaneous adipose tissue is linked to weight loss in gastrointestinal cancer patients. Br J Cancer 2011; 104:441-7. [PMID: 21245862 PMCID: PMC3049573 DOI: 10.1038/sj.bjc.6606083] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [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: 01/13/2023] Open
Abstract
Background: Profound loss of adipose tissue is a hallmark of cancer cachexia. Zinc-α2-glycoprotein (ZAG), a recently identified adipokine, is suggested as a candidate in lipid catabolism. Methods: In the first study, eight weight-stable and 17 cachectic cancer patients (weight loss ⩾5% in previous 6 months) were recruited. Zinc-α2-glycoprotein mRNA and protein expression were assessed in subcutaneous adipose tissue (SAT), subcutaneous adipose tissue morphology was examined and serum ZAG concentrations were quantified. In the second cohort, ZAG release by SAT was determined in 18 weight-stable and 15 cachectic cancer patients. The effect of ZAG on lipolysis was evaluated in vitro. Results: Subcutaneous adipose tissue remodelling in cancer cachexia was evident through shrunken adipocytes with increased fibrosis. In cachectic cancer patients, ZAG mRNA was upregulated (2.7-fold, P=0.028) while leptin mRNA decreased (2.2-fold, P=0.018); serum ZAG levels were found to be unaffected. Zinc-α2-glycoprotein mRNA correlated positively with weight loss (r=0.51, P=0.01) and serum glycerol levels (r=0.57, P=0.003). Zinc-α2-glycoprotein release by SAT was also elevated in cachectic patients (1.5-fold, P=0.024) and correlated with weight loss (r=0.50, P=0.003). Recombinant ZAG stimulated lipolysis in human adipocytes. Conclusions: Zinc-α2-glycoprotein expression and secretion by adipose tissue is enhanced in cachectic cancer patients. Given its lipid-mobilising effect, ZAG may contribute to adipose atrophy associated with cancer cachexia in human beings.
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Affiliation(s)
- T Mracek
- Obesity Biology Research Unit, School of Clinical Sciences, University of Liverpool, Liverpool L69 3GA, UK
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163
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Bao Y, Guérout R, Lussange J, Lambrecht A, Cirelli RA, Klemens F, Mansfield WM, Pai CS, Chan HB. Casimir force on a surface with shallow nanoscale corrugations: geometry and finite conductivity effects. Phys Rev Lett 2010; 105:250402. [PMID: 21231564 DOI: 10.1103/physrevlett.105.250402] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2010] [Revised: 10/12/2010] [Indexed: 05/30/2023]
Abstract
We measure the Casimir force between a gold sphere and a silicon plate with nanoscale, rectangular corrugations with a depth comparable to the separation between the surfaces. In the proximity force approximation (PFA), both the top and bottom surfaces of the corrugations contribute to the force, leading to a distance dependence that is distinct from a flat surface. The measured Casimir force is found to deviate from the PFA by up to 10%, in good agreement with calculations based on scattering theory that includes both geometry effects and the optical properties of the material.
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Affiliation(s)
- Y Bao
- Department of Physics, University of Florida, Gainesville, Florida 32611, USA
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164
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Bao Y, Chen JQ, Wu Y, Leng XH, Wang E, Marincola F, Radvanyi LG. Abstract P6-08-14: TRPS-1, a New GATA Family Transcription Factor, Regulates Epithelial-Mesenchymal Transition and Maintains an Estrogen Responsive, Claudin-Positive Phenotype in Breast Cancer Cells. Cancer Res 2010. [DOI: 10.1158/0008-5472.sabcs10-p6-08-14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
We recently reported that TRPS-1 (Trichorhinophalangeal Syndrome-1), a new GATA family transcription factor, is a ductal epithelial cell-specific gene expressed in normal breast and over-expressed in the majority of human breast cancer (BC), especially in ER+ BC. We also found that TRPS-1 is a marker for better prognosis when expressed over a critical threshold level using a new quantitative IHC method applied to over 150 primary BC cases of all subtypes. Here, we studied the molecular function of TRPS-1 using a lentiviral shRNA knockdown approach in an ER+ ductal epithelial BC cell line (T47D; luminal B type) normally expressing high levels of TRPS-1. Strikingly, knockdown of TRPS-1 in T47D cells resulted in a complete loss of epithelial markers, including E-cadherin and CK8/18 protein together with the loss of ER and a host of ER-associated genes, such as GATA-3 and FOXA1. In contrast, N-cadherin, vimentin, slug, and other genes associated with a mesenchymal phenotype were induced. Gene expression profiling using microarray found a number of additional differentially expressed genes following TRPS-1 knockdown, including a large decrease in the Prolactin receptor (PRLR), Claudin-1 and 6, EpCAM, PGR, and CD24, while AKT3 and MET (HGF-R) were increased. The Claudin-1 and PRLR gene were down-modulated 149-fold and 167-fold, respectively. This was verified at the protein level, with a total loss of cell surface Claudin-1 and PRLR expression in the TRPS-1 knockdown cells. Overall, the gene expression profile of TRPS-1 knockdown T47D cells resembled the recently described “Claudin-low” BC subset. TRPS-1 knockdown also had dramatic functional consequences, with the cells acquiring a mesenchymal, spindle-like morphology and high resistance to growth arrest and apoptosis under conditions of serum and estrogen deprivation. Moreover, these cells formed aggressive tumors in nude mice in an estrogen-independent manner after orthotopic injection into mammary fat pads, while control cells produced only small non-palpable tumors. In addition, transient induction of TRPS-1 expression in ER/TRPS-1-negative MDA-MB-231 cells led to a significant expression of ER together with other ER-associated genes. Our data suggests that TRPS-1 is a critical new GATA family transcription factor in the mammary gland that is at the hub of a cell lineage-determination pathway regulating epithelial-mesenchymal transition. In BC it may function in maintaining a more highly differentiated and less aggressive Claudin-positive ductal epithelial phenotype.
Citation Information: Cancer Res 2010;70(24 Suppl):Abstract nr P6-08-14.
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Affiliation(s)
- Y Bao
- M.D. Anderson Cancer Center, Houston, TX; National Cancer Institute, Bethesda, MD
| | - JQ Chen
- M.D. Anderson Cancer Center, Houston, TX; National Cancer Institute, Bethesda, MD
| | - Y Wu
- M.D. Anderson Cancer Center, Houston, TX; National Cancer Institute, Bethesda, MD
| | - X-H Leng
- M.D. Anderson Cancer Center, Houston, TX; National Cancer Institute, Bethesda, MD
| | - E Wang
- M.D. Anderson Cancer Center, Houston, TX; National Cancer Institute, Bethesda, MD
| | - F Marincola
- M.D. Anderson Cancer Center, Houston, TX; National Cancer Institute, Bethesda, MD
| | - LG. Radvanyi
- M.D. Anderson Cancer Center, Houston, TX; National Cancer Institute, Bethesda, MD
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165
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Bao Y, Yan H, Liu L, Xu Q. Efficient Extraction of Lycopene from Rhodopseudomonas palustris with n-Hexane and Methanol after Alkaline Wash. Chem Eng Technol 2010. [DOI: 10.1002/ceat.201000033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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166
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Bao Y, Li H, Liu J, Pöppel E. Neural mechanisms underlying the eccentricity effect of inhibition of return. Int J Psychophysiol 2010. [DOI: 10.1016/j.ijpsycho.2010.06.178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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167
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Kimball AB, Guérin A, Tsaneva M, Yu AP, Wu EQ, Gupta SR, Bao Y, Mulani PM. Economic burden of comorbidities in patients with psoriasis is substantial. J Eur Acad Dermatol Venereol 2010; 25:157-63. [DOI: 10.1111/j.1468-3083.2010.03730.x] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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168
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Korach A, Shemin RJ, Hunter CT, Bao Y, Shapira OM. Minimally invasive versus conventional aortic valve replacement: a 10-year experience. J Cardiovasc Surg (Torino) 2010; 51:417-421. [PMID: 20523293] [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: 05/29/2023]
Abstract
AIM Data on the impact of minimally invasive approach on clinical outcomes after isolated aortic valve replacement (MIAVR) are limited and somewhat controversial. The aim of the study was to compare the outcomes of patients undergoing MIAVR and conventional aortic valve replacement (CAVR) in a large cohort of patients operated over a decade. METHODS The study population consisted of 466 consecutive patients undergoing isolated AVR between 1995 and 2005. Outcomes of 164 patients undergoing MIAVR were compared to 302 patients undergoing CAVR. Univariable and multivariable analyses were performed to identify predictors of outcomes. RESULTS Operative mortality and major complication rates were similar among the groups. Univariate analysis revealed that MIAVR was associated with reduced incidence of allogeneic blood transfusions (31% vs. 41%, P=0.03) and a shorter hospital stay (5+/-2 vs. 7+/-5 days, P<0.0001). In multivariable analysis, predictors for blood transfusions were age (OR=2.15), non elective operation (OR=1.36), female gender (OR=1.13), prolonged cardiopulmonary bypass time (OR=1.12) and CAVR (OR=2.57). Predictors of prolonged hospital stay were peripheral vascular disease (OR=4.83), diabetes mellitus (OR=3.2), aortic cross clamp time (OR=1.17), and CAVR (OR=4.46). CONCLUSION MIAVR is a safe and effective procedure resulting in significant reduction of allogeneic blood transfusions and a shorter length of hospital stay.
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Affiliation(s)
- A Korach
- Department of Cardiothoracic Surgery, Hadassah-Hebrew, University Medical Center, Jerusalem, Israel
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169
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Abstract
BACKGROUND Elevated plasma free fatty acids (FFA) concentration is predictive of the conversion from normal glucose tolerance and impaired glucose tolerance to diabetes. AIMS To evaluate the effects of prolonged exposure to FFA on basal and glucose-stimulated insulin secretion (GSIS) of pancreatic beta-cell, and to investigate the role of oxidative stress in FFA-induced decrease in beta-cell function. METHODS Rats were assigned to 3 groups and underwent 96-h infusions of normal saline (NS), intralipid plus heparin (IH), or intralipid plus heparin and N-acetylcysteine (IH+NAC). The plasma insulin, malonyldialdehyde (MDA), reduced glutathione (GSH), and oxidized glutathione (GSSG) were measured. In vivo intravenous glucose tolerance test (IVGTT) and ex vivo isolated pancreatic tissues perfusion were performed. RESULTS In IH group GSIS both in IVGTT and perifused pancreatic tissues were impaired (p<0.05), the GSH/GSSG ratio was declined and MDA levels increased (p<0.05), the volume density score of nuclear factor kappaB and inducible nitric oxide synthase in pancreatic islets were increased compared to the NS group (p<0.01). In IH+NAC group, NAC intervention partly restored the GSH/GSSG ratio and MDA level, and improved FFA induced GSIS impairment. CONCLUSION Elevated circulating FFA levels may contribute to causing the abnormalities of pancreatic islet cell function through active oxidative stress and oxidative stress-sensitive signaling pathway, which may play a key role in the development of impaired insulin secretion seen in obese Type 2 diabetes.
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Affiliation(s)
- X Zhang
- Division of Endocrinology and Metabolism, Sichuan University, West China Hospital, Cheng Du, China
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Mracek T, Gao D, Tzanavari T, Bao Y, Xiao X, Stocker C, Trayhurn P, Bing C. Downregulation of zinc-{alpha}2-glycoprotein in adipose tissue and liver of obese ob/ob mice and by tumour necrosis factor-alpha in adipocytes. J Endocrinol 2010; 204:165-72. [PMID: 19934249 PMCID: PMC2807359 DOI: 10.1677/joe-09-0299] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Zinc-alpha2-glycoprotein (ZAG, also listed as AZGP1 in the MGI Database), a lipid-mobilising factor, has recently been suggested as a potential candidate in the modulation of body weight. We investigated the effect of increased adiposity on ZAG expression in adipose tissue and the liver and on plasma levels in obese (ob/ob) mice compared with lean siblings. The study also examined the effect of the pro-inflammatory cytokine tumour necrosis factor-alpha (TNFalpha) on ZAG expression in adipocytes. Zag mRNA levels were significantly reduced in subcutaneous (fourfold) and epididymal (eightfold) fat of ob/ob mice. Consistently, ZAG protein content was decreased in both fat depots of ob/ob mice. In the liver of obese animals, steatosis was accompanied by the fall of both Zag mRNA (twofold) and ZAG protein content (2.5-fold). Plasma ZAG levels were also decreased in obese mice. In addition, Zag mRNA was reduced in epididymal (fivefold) and retroperitoneal (fivefold) adipose tissue of obese (fa/fa) Zucker rats. In contrast to Zag expression, Tnfalpha mRNA levels were elevated in adipose tissue (twofold) and the liver (2.5-fold) of ob/ob mice. Treatment with TNFalpha reduced Zag gene expression in differentiated adipocytes, and this inhibition was chronic, occurring at 24 and 48 h following TNFalpha treatment. It is concluded that ZAG synthesis in adipose tissue and the liver is downregulated, as are its circulating levels, in ob/ob mice. The reduced ZAG production may advance the susceptibility to lipid accumulation in these tissues in obesity, and this could be at least in part attributable to the inhibitory effect of TNFalpha.
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Affiliation(s)
| | | | | | | | | | - C Stocker
- Clore LaboratoryUniversity of BuckinghamBuckingham, MK18 1EGUK
| | | | - C Bing
- (Correspondence should be addressed to C Bing; )
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173
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Hu C, Wang C, Zhang R, Ng MC, Bao Y, Wang C, So WY, Ma RC, Ma X, Chan JC, Xiang K, Jia W. Association of genetic variants of NOS1AP with type 2 diabetes in a Chinese population. Diabetologia 2010; 53:290-8. [PMID: 19937226 DOI: 10.1007/s00125-009-1594-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2009] [Accepted: 10/20/2009] [Indexed: 10/20/2022]
Abstract
AIMS/HYPOTHESIS Chromosome 1q21-q24 has been shown to be linked to type 2 diabetes. The International Type 2 Diabetes 1q Consortium showed that one of the nominal associations was located in the NOS1AP gene. Although this association was not replicated in additional samples of European descent, it remains unknown whether NOS1AP plays a role in Chinese individuals. METHODS In stage 1 analyses, 79 single nucleotide polymorphisms (SNPs) of the NOS1AP gene were successfully genotyped in a group of Shanghai Chinese individuals, comprising 1,691 type 2 diabetes patients and 1,720 control participants. In stage 2 analyses, the SNP showing the strongest association was genotyped in additional Chinese individuals, including 1,663 type 2 diabetes patients and 1,408 control participants. RESULTS In stage 1 analyses, 20 SNPs were nominally associated with type 2 diabetes (p < 0.05), with SNP rs12742393 showing the strongest association (OR 1.24 [95% CI 1.11-1.38]; p = 0.0002, empirical p = 0.019). Haplotype analysis also confirmed the association between rs12742393 and type 2 diabetes. In stage 2 analyses, the difference in allele frequency distribution of rs12742393 did not reach statistical significance (p = 0.254). However, the meta-analysis showed a significant association between rs12742393 and type 2 diabetes with an OR of 1.17 (95% CI 1.07-1.26; p = 0.0005). CONCLUSIONS/INTERPRETATION Our data suggest that NOS1AP variants may not play a dominant role in susceptibility to type 2 diabetes, but a minor effect cannot be excluded.
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Affiliation(s)
- C Hu
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai 200233, People's Republic of China
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174
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Bao Y, Li X, Liu S, Cui F, Wang H. Molecular cytogenetic characterization of a new wheat-Thinopyrum intermedium partial amphiploid resistant to powdery mildew and stripe rust. Cytogenet Genome Res 2009; 126:390-5. [PMID: 20016129 DOI: 10.1159/000266169] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/25/2009] [Indexed: 11/19/2022] Open
Abstract
A partial amphiploid, TE253, derived from crosses between the common wheat (Triticum aestivum L.) cultivar Yannong 15 and Thinopyrum intermedium (Host) Barkworth & D.R. Dewey was characterized by cytogenetic observations, disease resistance tests and genomic in situ hybridization (GISH). Mitotic observations showed that most plants of TE253 had 56 chromosomes, but a few had 54 or 55 chromosomes. The chromosomes in most pollen mother cells of plants with 2n = 56 formed 28 bivalents. Univalents (0.89 per cell) and tetravalents (0.087 per cell) occasionally occurred at meiotic metaphase I, showing a high degree of cytogenetic stability. After inoculation with the powdery mildew and stripe rust pathogens, Yannong 15 was highly susceptible, whereas TE253 and Th. intermedium were immune to both diseases. This indicated that the resistance of TE253 to powdery mildew and stripe rust was derived from Th. intermedium. GISH analysis using St-genomic DNA from Pseudoroegneria strigosa (M. Bieb) A. Löve as a probe and ABD-genomic DNA from Chinese Spring wheat as a blocker demonstrated that TE253 consisted of 2 St-genome chromosomes, 8 J(S)-genome chromosomes, 2 SAT J chromosomes and 2 J-St translocated chromosomes. Line TE253 is a new partial amphiploid with resistance to both powdery mildew and stripe rust and can be used as a source of resistance genes in wheat improvement.
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Affiliation(s)
- Y Bao
- Agronomy College, Shandong Agricultural University, Tai'an, 271018 China
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175
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Bao Y, Jiang L, Shi YQ, Zou JJ, Zhao Y, Liu ZM. Increased expression of phosphorylated Smad2 and Smad3 in the hippocampus of streptozotocin-induced diabetic rats. Exp Clin Endocrinol Diabetes 2009; 118:47-50. [PMID: 19834880 DOI: 10.1055/s-0029-1225610] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Activation of the Smad signalling pathway has been implicated in the pathological process of diabetic associated complications. The current study was designed to see whether Smad signalling was activated in the hippocampus of streptozotocin-induced diabetic rats. Compared with vehicle-treated controls, immunoblot analysis of hippocampal extracts showed that phosphorylated Smad2 was upregulated at 8 weeks post streptozotocin induction (p<0.01), and phosphorylated Smad3 protein was upregulated at 4 and 8 weeks post streptozotocin induction (p<0.01) in streptozotocin-induced diabetic rats. In addition, immunofluorescence labelling assay showed that the percentage of pSmad2 immunoreactive astrocytes increased significantly in CA1, CA3 and dentate gyrus region (p<0.01), and pSmad3 immunoreactive astrocytes increased significantly in CA1 region (p<0.01) and in CA3 and dentate gyrus region (p<0.05) of the hippocampus in diabetic rats. These data indicate that Smad signalling is enhanced in hippocampal astrocytes of diabetic rats, and may thereby represent a clue to explore its exact role in the development of diabetic encephalopathy.
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Affiliation(s)
- Y Bao
- Department of Endocrinology, Changzheng Hospital, Second Military Medical University, Shanghai, China
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176
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Hu C, Wang C, Zhang R, Ma X, Wang J, Lu J, Qin W, Bao Y, Xiang K, Jia W. Variations in KCNQ1 are associated with type 2 diabetes and beta cell function in a Chinese population. Diabetologia 2009; 52:1322-5. [PMID: 19308350 DOI: 10.1007/s00125-009-1335-6] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2008] [Accepted: 03/02/2009] [Indexed: 01/27/2023]
Abstract
AIMS/HYPOTHESIS Recent genome-wide association studies in East Asian populations reported that single nucleotide polymorphisms (SNPs) in KCNQ1 are associated with type 2 diabetes. The aim of this study was to validate this finding in a Chinese population. METHODS We genotyped four SNPs, rs2074196, rs2237892, rs2237895 and rs2237897, in a group of 3,503 Shanghai Chinese individuals, comprising 1,769 type 2 diabetic patients and 1,734 normoglycaemic controls. Both the cases and the controls were extensively phenotyped for anthropometric and biochemical traits related to glucose metabolism. Arginine stimulation tests under fasting conditions were performed in a subgroup of 466 cases. RESULTS All four of the SNPs were associated with type 2 diabetes, with rs2237892 showing strongest evidence for association (OR 1.532, 95% CI 1.381-1.698, p = 5.0 x 10(-16)). The SNP rs2237897 was associated with both acute insulin and C-peptide response after arginine stimulation in a subgroup of cases (p = 0.0471 and p = 0.0156, respectively). The SNP rs2237895 was associated with both first- and second-phase insulin secretion in the controls (p = 0.0334 and p = 0.0002, respectively). CONCLUSIONS/INTERPRETATION In this study we found that KCNQ1 was associated with type 2 diabetes susceptibility in a Chinese population, possibly through its effect on beta cell function.
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Affiliation(s)
- C Hu
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai, People's Republic of China
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Wang L, Bao Y, Yang Y, Si S, Hong B. Abstract: P472 DISCOVERY OF ANTAGONISTS FOR HUMAN SCAVENGER RECEPTOR CD36 VIA AN ELISA-LIKE HIGH-THROUGHPUT SCREENING ASSAY. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)70767-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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178
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Bao Y, Dharmawardhana P, Arias R, Allen MB, Ma C, Strauss SH. WUS and STM-based reporter genes for studying meristem development in poplar. Plant Cell Rep 2009; 28:947-62. [PMID: 19280192 DOI: 10.1007/s00299-009-0685-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2008] [Revised: 01/08/2009] [Accepted: 02/08/2009] [Indexed: 05/08/2023]
Abstract
We describe the development of a reporter system for monitoring meristem initiation in poplar using promoters of poplar homologs to the meristem-active regulatory genes WUSCHEL (WUS) and SHOOTMERISTEMLESS (STM). When ~3 kb of the 5' flanking regions of close homologs were used to drive expression of the GUSPlus gene, 50-60% of the transgenic events showed expression in apical and axillary meristems. However, expression was also common in other organs, including in leaf veins (40 and 46% of WUS and STM transgenic events, respectively) and hydathodes (56% of WUS transgenic events). Histochemical GUS staining of explants during callogenesis and shoot regeneration using in vitro stems as explants showed that expression was detectable prior to visible shoot development, starting 3-15 days after explants were placed onto callus inducing medium. A minority of WUS and STM events also showed expression in the cambium, phloem, or xylem of regenerated, greenhouse grown plants undergoing secondary growth. Based on microarray gene expression data, a paralog of poplar WUS was detectably up-regulated during shoot initiation, but the other paralog was not. Both paralogs of poplar STM were down-regulated threefold to sixfold during early callus initiation. We identified 15-35 copies of cytokinin response regulator binding motifs (ARR1AT) and one copy of the auxin response element (AuxRE) in both promoters. Several of the events recovered may be useful for studying the process of primary and secondary meristem development, including treatments intended to stimulate meristem development to promote clonal propagation and genetic transformation.
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Affiliation(s)
- Y Bao
- Department of Forest Ecosystems and Society, Oregon State University, Corvallis, OR, 97331-5752, USA
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179
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Bao Y, Zhang T, Gawne D, Mason P. Quantitative model for the viscous flow and composition of two-phase silicon nitride-based particles in plasma-spray deposition. Ann Ital Chir 2009. [DOI: 10.1016/j.jeurceramsoc.2008.09.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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180
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Bao Y, Xie H, Shan J, Jiang R, Zhang Y, Guo L, Zhang R, Li Y. Biochemical characteristics and function of a threonine dehydrogenase encoded byste11in Ebosin biosynthesis ofStreptomycessp. 139. J Appl Microbiol 2009; 106:1140-6. [DOI: 10.1111/j.1365-2672.2008.04079.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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181
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Hu C, Zhang R, Wang C, Ma X, Wang C, Fang Q, Bao Y, Xiang K, Jia W. A genetic variant of G6PC2 is associated with type 2 diabetes and fasting plasma glucose level in the Chinese population. Diabetologia 2009; 52:451-6. [PMID: 19082990 DOI: 10.1007/s00125-008-1241-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2008] [Accepted: 11/20/2008] [Indexed: 01/05/2023]
Abstract
AIMS/HYPOTHESIS Single nucleotide polymorphisms (SNPs) in G6PC2 have been reported to be associated with fasting plasma glucose level in several populations of European descent. However, whether G6PC2 variants have a similar effect in other ethnic groups is unknown. The aim of this study was to investigate the effect of common variants of G6PC2 on type 2 diabetes and related clinical features in a Chinese population. METHODS We selected four SNPs, rs13387347, rs2232316, rs492594 and rs16856187, tagging all the common variants spanning the G6PC2 gene (r(2) >or= 0.8) based on HapMap Chinese data, and genotyped them in a group of 3,676 Shanghai Chinese individuals, comprising 1,876 cases and 1,800 controls. RESULTS Three SNPs were nominally associated with type 2 diabetes, with rs16856187 showing the strongest evidence for association (p = 0.0009, empirical p = 0.0047). Further conditional analysis revealed that the association signal arose from an individual SNP, rs16856187. This SNP was also associated with fasting plasma glucose level in participants with normal glucose regulation (p = 0.0002), with the fasting plasma glucose level observed to increase by 0.067 mmol/l with each copy of the rare C allele. CONCLUSIONS/INTERPRETATION In this study we identified a novel risk-conferring G6PC2 SNP for type 2 diabetes in a Chinese population and confirmed the previous finding that G6PC2 variants are associated with fasting plasma glucose concentration.
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Affiliation(s)
- C Hu
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai, 200233, People's Republic of China
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182
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Zhang H, Lu Z, Zhang L, Bao Y, Zhan X, Feng F, Zheng X. Antifungal activity of a food-grade dilution-stable microemulsion against Aspergillus niger. Lett Appl Microbiol 2009; 47:445-50. [PMID: 19146536 DOI: 10.1111/j.1472-765x.2008.02437.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIMS To study the antifungal activities of a prepared food-grade dilution-stable microemulsion against Aspergillus niger. METHODS AND RESULTS Results from the antifungal activity on solid medium by agar dilution method showed that the microemulsion caused complete growth inhibition at 2000 ppm, and at 1000 ppm, showed 55% growth inhibition after 4 days of incubation and a delay of conidiation by 1 day compared with controls. Results from the antifungal activity in liquid medium by broth dilution method showed that the growth of A. niger was completely inhibited when a liquid medium containing 10(6) spores per ml was treated with 500 ppm of microemulsion, which was determined by minimum fungicidal concentration. Study of fungicidal kinetics showed that more than 99% of viable spores were killed within 15 min. These antifungal activities were confirmed by scanning electron microscopy, light microscopy and increased Ca(+2), K(+) and Mg(+2) leakages. CONCLUSIONS The results suggest that the prepared microemulsions are effective antifungal systems with excellent growth inhibition and sporicidal activities, and indicate that their antifungal activity may be to the result of the disruption and dysfunction of A. niger cell walls and biological membranes. SIGNIFICANCE AND IMPACT OF THE STUDY This study suggests the potential use of food-grade dilution-stable microemulsions for antifungal use in the food and pharmaceutical industries.
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Affiliation(s)
- H Zhang
- Department of Food Science and Nutrition, Huajiachi Campus, Zhejiang University, Hangzhou, China
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183
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Chan HB, Bao Y, Zou J, Cirelli RA, Klemens F, Mansfield WM, Pai CS. Measurement of the Casimir force between a gold sphere and a silicon surface with nanoscale trench arrays. Phys Rev Lett 2008; 101:030401. [PMID: 18764238 DOI: 10.1103/physrevlett.101.030401] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2008] [Indexed: 05/26/2023]
Abstract
We report measurements of the Casimir force between a gold sphere and a silicon surface with an array of nanoscale, rectangular corrugations using a micromechanical torsional oscillator. At distances between 150 and 500 nm, the measured force shows significant deviations from the pairwise additive formulism, demonstrating the strong dependence of the Casimir force on the shape of the interacting bodies. The observed deviation, however, is smaller than the calculated values for perfectly conducting surfaces, possibly due to the interplay between finite conductivity and geometry effects.
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Affiliation(s)
- H B Chan
- Department of Physics, University of Florida, Gainesville, Florida 32611, USA.
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184
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Pei X, Bao Y, Chen Y, Li X. Correlation of lens density measured using the Pentacam Scheimpflug system with the Lens Opacities Classification System III grading score and visual acuity in age-related nuclear cataract. Br J Ophthalmol 2008; 92:1471-5. [PMID: 18586899 DOI: 10.1136/bjo.2007.136978] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
AIMS To investigate the relationship between lens density measured with the Pentacam Scheimpflug System and grading score using the Lens Opacities Classification System (LOCS) III as well as that between lens density and visual acuity in age-related nuclear cataract patients. METHODS Lens density and grading score were evaluated in 138 cases (180 eyes) with age-related nuclear cataract. LogMAR visual acuity was tested with the Early Treatment Diabetic Retinopathy Study chart. The correlations between lens density value and LOCS III nuclear opacity (NO) and nuclear colour (NC) grading score and that between lens density value and logMAR visual acuity were analysed. RESULTS There was a linear increasing relationship between lens density value and LOCS III grading score in nuclear cataract patients. Lens density value had a stronger significant correlation with LOCS III NO score than that with NC score. The correlation between the nuclear lens density value and logMAR visual acuity was stronger than that between NO score and logMAR visual acuity or between NC score and logMAR visual acuity. CONCLUSION Lens density as a quantitative and objective parameter can present the degree of NO and associated visual impairment due to nuclear cataract. The LOCS III criterion as an economic cataract grading system provides data that are in satisfactory concordance with the results obtained using the Pentacam Scheimpflug system.
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Affiliation(s)
- X Pei
- People's Eye Center, Peking University People's Hospital, Beijing, China
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185
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Zhang G, Wang X, Zhi A, Bao Y, Yang Y, Qu M, Luo J, Li Q, Guo J, Wang Z, Yang J, Xing G, Chai S, Shi T, Liu Q. Development of a lateral flow immunoassay strip for screening of sulfamonomethoxine residues. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2008; 25:413-23. [DOI: 10.1080/02652030701561452] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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186
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Fan YH, He XT, Bi CF, Guo F, Bao Y, Chen R. Synthesis, characterization, and antibacterial activity of new rare-earth ion complexes with unsymmetrical Schiff base ligand. RUSS J COORD CHEM+ 2007. [DOI: 10.1134/s107032840707010x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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187
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Priebe W, Fokt I, Szymanski S, Bao Y, Conrad C, Chakraborty A, Abbruzzese J, Guha S, Myers J, Madden T. 556 POSTER Novel small molecule inhibitors of Jak2/STAT3 pathway: design, structurte-activity relationship, and oral bioavilability. EJC Suppl 2006. [DOI: 10.1016/s1359-6349(06)70561-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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188
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Wu S, Deng M, Deng X, Li F, Bao Y, Gao Y, Wang H, Zeng Z, Huang S, He X. 2397. Int J Radiat Oncol Biol Phys 2006. [DOI: 10.1016/j.ijrobp.2006.07.807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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189
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Santen RJ, Lobenhofer EK, Afshari CA, Bao Y, Song RX. Adaptation of estrogen-regulated genes in long-term estradiol deprived MCF-7 breast cancer cells. Breast Cancer Res Treat 2006; 94:213-23. [PMID: 16258703 DOI: 10.1007/s10549-005-5776-4] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
First line treatment of hormone dependent breast cancer initially causes tumor regression but later results in adaptive changes and tumor re-growth. Responses to second line treatments occur but tumors again begin to progress after a period of 12???18??months. In depth understanding of the adaptive process would allow the identification of targets to abrogate the development of hormonal resistance and prolong the efficacy of endocrine therapy. We have developed a model system to examine adaptive changes in human MCF-7 breast cancer cells. Upon deprivation of estradiol for a prolonged period of time, a maneuver analogous to surgical oophorectomy in pre-menopausal women and use of aromatase inhibitors in post-menopausal patients, tumor cells adapt and become hypersensitive to estradiol. We reasoned that the expression pattern of multiple genes would change in response to estradiol deprivation and that cDNA microarrays would provide an efficient means of assessing these changes. Accordingly, we examined the transcriptional responses to estradiol in long-term estradiol deprived (LTED) MCF-7 cells with a cDNA microarray containing 1901 known genes and ESTs. To assess the changes induced by long-term estradiol deprivation, we compared the effects of estradiol administration in LTED cells with those in MCF-7 cells, which we had previously reported, and confirmed with real time PCR using the parental and LTED cells. Seven genes and one EST were induced by estradiol in LTED but not in wild type MCF-7 cells, whereas ten genes were down-regulated by estradiol only in LTED cells. The expression of seven genes increased concurrently and five decreased in response to estradiol in both cell types. From these observations, we generated testable hypotheses regarding several genes including DKFZP, RAP-1, ribosomal protein S6, and TM4SF1. Based upon the known functions of these genes and the patterns of observed changes, we postulate that divergent regulation of these genes may contribute to the different biologic responses to estrogen in these cell lines. These results provide targets for further mechanistic studies in our experimental system. Our findings indicate that long-term estradiol deprivation causes expression changes in multiple genes and emphasizes the complexity of the process of cellular adaptation.
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Affiliation(s)
- R J Santen
- Division of Endocrinology, University of Virginia Health System, Charlottesville, VA 22908, USA.
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190
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Abstract
It is now widely recognized that the packaging of genomic DNA, together with core histones, linker histones, and other functional proteins into chromatin profoundly influences nuclear processes such as transcription, replication, DNA repair, and recombination. How chromatin structure modulates the expression of knowledge encoded in eukaryotic genomes, and how these processes take place within the context of a highly complex and compacted genomic chromatin environment remains a major unresolved question in biology. Here we review recent advances in nucleosome structure and dynamics.
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Affiliation(s)
- J V Chodaparambil
- Department of Biochemistry and Molecular Biology, Colorado State University, Fort Collins 80523-1870, USA
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191
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Jakubikova J, Bao Y, Bodo J, Sedlak J. Isothiocyanate iberin modulates phase II enzymes, posttranslational modification of histones and inhibits growth of Caco-2 cells by inducing apoptosis. Neoplasma 2006; 53:463-70. [PMID: 17167713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The aim of presented study was to further investigate the concentration-dependent changes induced by isothiocyanate iberin (IBN) in human colon carcinoma Caco-2 cells. The concentrations of IBN below IC(50) value (18 microM, 72 h) triggered the augmentation of mRNA levels for phase II detoxification GSTA1 and UGT1A1 enzymes and antioxidant thioredoxin reductase 1 gene in cells treated for 24 h. In addition a significant increase of acetylated H4 histone was detected. The mRNA induction peaked at IC(50) value and returned to level of control cells at 40 microM concentration of IBN. The cell cycle changes, gamma-H2AX stainability and the increase of phospho-H3 mitotic marker were induced at concentrations above IC(50) value. Appearance of Annexin V positive apoptotic cells and sub-G1 fragmented DNA as well as decrease of mitochondrial transmembrane potential confirmed cytotoxic effect of IBN observed in MTT assay. The predominance of necrotic cells and profound positivity of gamma-H2AX took place at the highest concentration of IBN. Thus, IBN represents the effective member of natural chemopreventive isothiocyanate family with which apoptotic potential can by employed to eliminate tumor cells.
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Affiliation(s)
- J Jakubikova
- Laboratory of Tumor Immunology, Cancer Research Institute, 833 91 Bratislava, Slovak Republic
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192
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Chakravarthy S, Bao Y, Roberts VA, Tremethick D, Luger K. Structural characterization of histone H2A variants. Cold Spring Harb Symp Quant Biol 2005; 69:227-34. [PMID: 16117653 DOI: 10.1101/sqb.2004.69.227] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- S Chakravarthy
- Department of Biochemistry and Molecular Biology, Colorado State University, Fort Collins, Colorado 80523-1870, USA
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193
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Bao Y, Everaert J, Pietraszkiewicz M, Pietraszkiewicz O, Bohets H, Geise H, Peng B, Nagels L. Behaviour of nucleotides and oligonucleotides in potentiometric HPLC detection. Anal Chim Acta 2005. [DOI: 10.1016/j.aca.2005.06.049] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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194
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Chen M, Chen Y, Bao Y, Xian C, Liu G, Zhang L, Xu G, Deng X, Lu T, Oian J, Cui N. Neoadjuvant chemotherapy followed by late-course accelerated hyperfractionated radiation therapy for locally advanced non-small cell lung cancer: The long term results of a phase I/II clinical trial. Int J Radiat Oncol Biol Phys 2004. [DOI: 10.1016/j.ijrobp.2004.07.485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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195
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Lazar H, Chipkin S, Fitzgerald C, Bao Y, Cabral H, Asptein C. Tight glycemic control in diabetic coronary artery bypass graft patients improves perioperative outcomes and decreases recurrent ischemic events. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.accreview.2004.06.055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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196
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Bao Y. cDNA cloning and expression of bacteria-induced Hdd11 gene from eri-silkworm, Samia cynthia ricini. Comp Biochem Physiol C Toxicol Pharmacol 2003. [DOI: 10.1016/s1532-0456(03)00239-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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197
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Qu J, Yang B, Bao Y, Yang Y, Xu Y, Xu X, Fan P, Ren Y. [Establishment and identification of the monoepitopic monoclonal antibody of Plasmodium falciparum]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2003; 17:338-41. [PMID: 12563727] [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: 02/28/2023]
Abstract
AIM To prepare a monoepitopic monclonal antibody of Plasmoduim falciparum. METHODS According to the theory of protein structure, a peptide with 6-9 residues representting the antigenicity of the original histidine-rich protein II (HRP-II) of P. falciparum was synthesized and used to immunize BALB/c mice after purity identification by capillary electrophoresis. RESULTS Four hybridoma cell lines targeting a suitable peptide from pf HRP-II were obtained by using spleen embedment method and hybridoma technology. CONCLUSION It is the first report to prepare a monoepitopic monoclonal antibody against original protein by selecting a suitable peptide from the primary sequence of protein.
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Affiliation(s)
- J Qu
- Institute of Parasitic Diseases, Chinese Academy of Preventive Medicine, Shanghai 200025
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198
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Martin PK, Bao Y, Boyer E, Winterberg KM, McDowell L, Schmid MB, Buysse JM. Novel locus required for expression of high-level macrolide-lincosamide-streptogramin B resistance in Staphylococcus aureus. J Bacteriol 2002; 184:5810-3. [PMID: 12270841 PMCID: PMC139611 DOI: 10.1128/jb.184.20.5810-5813.2002] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The yycF1(Ts) mutation in Staphylococcus aureus conferred hypersensitivity to macrolide-lincosamide-streptogramin B (MLS(B)) antibiotics on strains either containing or lacking ermB. The overexpression of the S. aureus Ssa protein restored the yycF1 mutant to wild-type levels of susceptibility. Inactivation of ssa in an unmutagenized strain dramatically reduced ermB-based resistance. Conditional loss of function or expression of ssa in the yycF1 mutant is proposed to result in the observed hypersensitivity to MLS(B) antibiotics.
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Affiliation(s)
- P K Martin
- Essential Therapeutics, Inc., Mountain View, California 94043, USA.
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199
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Abstract
The aim of this study is to characterize the influence of organic dispersants on the stability of hydroxyapatite (HAP) dispersions, using viscosity measurements, electrokinetic sonic amplitude (ESA) measurements and adsorption isotherms. Colloidal stability of aqueous suspensions of HAP as a function of solids loading and of the type and concentration of deflocculant has been studied. The interaction between particles and dispersant molecules was characterized. Adsorption measurements of the amount of dispersants on the particles surface, viscosity and electrophoretic measurements as a function of the dispersant concentration are correlated. Suspension parameters have been adjusted in order to obtain a high solids loading slurry with a plastic viscosity which will allow its use in colloidal processing.
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Affiliation(s)
- Y Bao
- Department of Ceramics and Glass Engineering, UIMC, University of Aveiro, 3810 Aveiro, Portugal
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200
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De Wit M, Verreyt G, Bao Y, Geise HJ. Mark-Houwink-Sakurada Constants for the Methoxy Precursor of Poly(2,5-thienylenevinylene). Macromolecules 2002. [DOI: 10.1021/ma00118a050] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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