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Mu FH, Hu FL, Wei H, Zhang YY, Yang GB, Lei XY, Yang YP, Sun WN, Cui MH. [Protective effect of compound bismuth and magnesium granules on aspirin-induced gastric mucosal injury in rats]. ZHONGHUA YI XUE ZA ZHI 2016; 96:464-7. [PMID: 26875925 DOI: 10.3760/cma.j.issn.0376-2491.2016.06.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To investigate the protective effect of compound bismuth and magnesium granules on aspirin-induced gastric mucosal injury in rats and its possible mechanism. METHODS Acute gastric mucosal injury model was developed with intraperitoneal injection of aspirin in Wistar rats. The rats were divided into normal control group, injury group, sucralfate protection group, compound bismuth and magnesium granules protection group and its herbal components protection group(each group 12 rats). In the protection groups, drugs as mentioned above were administered by gavage before treated with intraperitoneal injection of aspirin. To evaluate the extent of gastric mucosal injury and the protective effect of drugs, gastric mucosal lesion index, gastric mucosal blood flow, content of gastric mucosal hexosamine, prostaglandins (PG), nitric oxide(NO), tumor necrosis factor (TNF), and interleukin (IL) -1, 2, 8 were measured in each group, and histological changes were observed by gross as well as under microscope and electron microscope. RESULTS Contents of hexosamine, NO, and PG in all the protection groups were significantly higher than those in the injury group (all P<0.01), and content of NO in the compound bismuth and magnesium granules group was significantly higher than that in the sucralfate group ((11.29±0.51) vs(10.80±0.36)nmol/ml, P<0.05). The gastric mucosal lesion index, contents of TNF, and IL-1, 2, 8 were significantly lower in all the protection groups than in the injury group (all P<0.01), and contents of IL-2 and IL-8 in the compound bismuth and magnesium granules group were significantly lower than those in the sucralfate group ((328.17±6.56) vs(340.23±8.05)pg/ml, P<0.01; (170.82±7.31) vs(179.31±7.80)pg/ml, P<0.05). Tissue injury and inflammatory reaction in all the protection groups were obviously mitigated compared with the injury group. CONCLUSION Compound bismuth and magnesium granules and its herbal components may have significant protective effect on aspirin-induced gastric mucosal injury.
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Cao Y, Li D, Xu B, Wang M, Zhen N, Man L, Zhang Y, Chi M. A microRNA-152 that targets the phosphatase and tensin homolog to inhibit low oxygen induced-apoptosis in human brain microvascular endothelial cells. GENETICS AND MOLECULAR RESEARCH 2016; 15:gmr7371. [DOI: 10.4238/gmr.15027371] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Xu HC, Gui LS, Song N, Zhang YY, Wang HC, Zan LS. Association of CRTC2 gene polymorphisms with growth and meat quality traits of Qinchuan cattle. GENETICS AND MOLECULAR RESEARCH 2015; 14:12912-20. [PMID: 26505444 DOI: 10.4238/2015.october.21.12] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Growth and meat quality traits play important roles in the evaluation of cattle productivity and are influenced by genetic and environmental factors. CRTC2 is a recently discovered gene related to obesity that may influence fat deposition. The aim of the current study was to detect polymorphisms of bovine CRTC2 and explore their relationships to growth and meat quality in Qinchuan cattle. Three single nucleotide polymorphisms (SNPs); g.3001 C>T; g.3034 G>A; and g.3467 T>C, were identified from sequencing results of 422 Qinchuan cattle. The genotypic distributions of both g.3034 G>A and g.3467 T>C mutations were in agreement with Hardy-Weinberg equilibrium, (P < 0.05), while the T3001C mutation was not (P > 0.05), based on χ(2) test analysis. The SNPs g.3001 C>T and g.3034 G>A are missense mutations (Ser/Phe and Ser/Thr respectively). Additionally, SNPs g.3034 G>A and g.3467 T>C showed a medium polymorphism level (0.25 < PIC< 0.50), whereas g.3001 C>T showed a low polymorphism level (PIC < 0.25). These three SNPs were significantly associated with several growth and meat quality traits in the Qinchuan cattle population (P < 0.05 or P < 0.01). Collectively, these results demonstrate that CRTC2 is involved in the regulation of cattle growth and meat quality, and suggest that CRTC2 is a potential candidate gene for marker-assisted selection in future breeding development programs for Qinchuan cattle.
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Qin N, Liu Q, Zhang YY, Fan XC, Xu XX, Lv ZC, Wei ML, Jing Y, Mu F, Xu RF. Association of novel polymorphisms of forkhead box L2 and growth differentiation factor-9 genes with egg production traits in local Chinese Dagu hens. Poult Sci 2015; 94:88-95. [PMID: 25577797 DOI: 10.3382/ps/peu023] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Transcription factor forkhead box L2 (FOXL2) and growth differentiation factor-9 (GDF9) genes have critical roles in the regulation of hen ovarian development. In the present study, these genes were explored as possible molecular markers associated with BW, hen-housed egg production, and egg weight in Chinese Dagu hens. Samples were analyzed using the PCR-single strand conformation polymorphism (PCR-SSCP) technique followed by sequencing analysis, and two novel single nucleotide polymorphisms (SNPs) were identified within these candidate genes. Among them, an A/G transition at base position 238 in the coding region of the FOXL2 gene and a G/T transversion at base position 1609 in exon 2 of the GDF9 gene were found to be polymorphic and named SNPs A238G and G1609T, respectively. The SNP A238G (FOXL2) leads to a nonsynonymous substitution (isoleucine77-to-valine), and when the 360 Dagu hen samples were divided into genotypes AA and AB, allele A was found to be present at a higher frequency. Furthermore, the AA genotype correlated with significantly higher hen-housed egg production at 30, 43, 57, and 66 wk of age and with a higher egg weight at 43 wk (P<0.05). For the SNP G1609T (GDF9), the hens were typed into TT and TC genotypes, with the T allele shown to be dominant. The TC genotype was also markedly correlated with higher hen-housed egg production and a higher egg weight (P<0.05). Moreover, four haplotypes were reconstructed based on these two SNPs, with the AATC haplotype found to be correlated with the highest hen-housed egg production at 30 to 66 wk of age and with higher egg weights at 43 wk (P<0.05). Collectively, the two SNPs identified in this study might be used as possible genetic molecular markers to aid in the improvement of egg production traits in chicken breeding.
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Qin N, Fan XC, Zhang YY, Xu XX, Tyasi TL, Jing Y, Mu F, Wei ML, Xu RF. New insights into implication of the SLIT/ROBO pathway in the prehierarchical follicle development of hen ovary. Poult Sci 2015; 94:2235-46. [PMID: 26188027 DOI: 10.3382/ps/pev185] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2015] [Accepted: 05/19/2015] [Indexed: 01/28/2023] Open
Abstract
The SLIT/Roundabout (ROBO) pathway is involved in follicle development of mammalian ovary, and 2 secreted hormones activin A and inhibin A have potential roles in modulation of the SLIT/ROBO system, but the related actions remain poorly understood in bird. The aims of the present study were to examine the spatial and temporal expression of the SLIT ligand genes (SLIT1, SLIT2, and SLIT3) and their receptor ROBO1, ROBO2, ROBO3, and ROBO4 genes in various-sized prehierarchical follicles during hen ovary development and the effects of activin A and inhibin A on the expression of these genes in the cultured hen follicles. Our result demonstrated that the transcripts of the 3 SLIT genes were highly expressed in the developing follicles and expression patterns of the SLIT transcripts were different from those of ROBO genes detected by real-time quantitative reverse transcriptase PCR. Both SLIT and ROBO transcripts were predominantly expressed in oocytes and granulosa cells from the prehierarchichal follicles examined by in situ hybridization. The localization for SLIT and ROBO proteins was revealed by immunohistochemistry similar to the spatial distribution of their transcript. In cultured follicles (4 to 8 mm in diameter), the expression levels of SLIT and ROBO members are hormonally regulated by activin A (10 ng/mL) and/or inhibin A (20 ng/mL) after treatment for 24 h. However, the expression of only SLIT2, SLIT3, and ROBO3 mRNA presented a directly opposite response to activin A and inhibin A hormones. These results indicate that SLIT/ROBO pathway is implicated in the prehierarchical follicular development of the hen ovary by an intrafollicular autocrine and/or paracrine action, and is influenced by activin A and inhibin A hormones.
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Li J, Zhang YY, Wang NN, Bhandari R, Liu QQ. Riga-Fede disease in a child. Clin Exp Dermatol 2015; 41:285-6. [PMID: 26307375 DOI: 10.1111/ced.12728] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/20/2014] [Indexed: 11/30/2022]
Abstract
Riga-Fede disease (RFD) was initially described as a benign ulceration of the lingual frenum or tongue of infants, most commonly resulting from repetitive trauma by natal teeth. However, similar clinical manifestations can also be found in children with repetitive tongue-thrusting habits or certain neurological disorders. This report describes an unusual case of RFD in a 6-year-old Chinese boy. The lesion appeared as an ulcer on the anterior ventral surface of the child's tongue, and was caused by a repetitive tongue-thrusting habit. After eliminating the source of repetitive trauma and starting concurrent use of therapeutic drugs for 1 week, the lesion healed completely.
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Zhang YY, Yang LQ, Guo LM. Effect of phosphatidylserine on memory in patients and rats with Alzheimer's disease. GENETICS AND MOLECULAR RESEARCH 2015; 14:9325-33. [PMID: 26345866 DOI: 10.4238/2015.august.10.13] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The aim of this study was to investigate the effect of phosphatidylserine (PS) on memory of patients and rats with Alzheimer's disease (AD). In total, 57 AD patients were recruited from our hospital, and were divided into two groups: 25 in the control group and 32 in the observation group. Next, 300 mg/d of PS was given to the rats in the observation group for 12 continuous weeks based on the control group. AD rats were divided into three groups: control group, PS 30 mg/kg group, and PS 15 mg/kg group. Learning memory ability and free radical levels in the brain were detected after treatment. In AD patients, vocabulary and picture matching scores in the two treatment groups increased after treatment (P < 0.05). Moreover, the scores in the treated group were significantly greater than the control group (P < 0.05). In AD rats, PS treatment reduced the escape latent period of AD rats, increased SOD and OH(-), and decreased acetylcholinesterase levels (P < 0.05). Compared with PS 15 mg/kg, PS 30 mg/kg group was significantly more efficacious (P < 0.05). Compared with the AD model group, hippocampal cells showed normal arrangement, karyopyknosis decreased, and the pathological changes in the two PS groups were considerable. In conclusion, PS decreased cholinesterase, improved memory, and improved hippocampal inflammation injury in AD brains by increasing SOD and OH(-) levels.
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183
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Zhang YY, Huang N, Xiao XH, Huang L, Liu F, Su WH, Que YX. Molecular variation of Sporisorium scitamineum in Mainland China revealed by internal transcribed spacers. GENETICS AND MOLECULAR RESEARCH 2015. [PMID: 26214470 DOI: 10.4238/2015.july.14.15] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Sugarcane smut caused by the fungus Sporisorium scitamineum is a worldwide disease and also one of the most prevalent diseases in sugarcane production in mainland China. To study molecular variation in S. scitamineum, 23 S. scitamineum isolates from the 6 primary sugar-cane production areas in mainland, China (Guangxi, Yunnan, Guangdong, Hainan, Fujian, and Jiangxi Provinces), were assessed using internal transcribed spacer (ITS) methods. The results of ITS sequence analysis showed that the organisms can be defined at the genus level, including Ustilago and Sporisorium, and can also differentiate between closely related species. This method was not suitable for phylogenetic relationship analysis of different S. scitamineum isolates and could not provide support regarding their race ascription at the molecular level. The results of the present study will be useful for studies examining the molecular diversity of S. scitamineum and for establishing a genetic foundation for their pathogenicity differentiation and new race detection. In addition, our results can provide useful information for the pathogen selection principle in sugarcane smut resistance breeding and variety distribution.
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Huang N, Zhang YY, Xiao XH, Huang L, Wu QB, Que YX, Xu LP. Identification of smut-responsive genes in sugarcane using cDNA-SRAP. GENETICS AND MOLECULAR RESEARCH 2015; 14:6808-18. [PMID: 26125888 DOI: 10.4238/2015.june.18.23] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Sugarcane smut, caused by the fungus Sporisorium scitamineum, is one of the main diseases that affect sugarcane worldwide. In the present study, the cDNA-SRAP technique was used to identify genes that are likely to be involved in the response of sugarcane to S. scitamineum infection. In total, 21 bands with significant differential expression during cDNA-SRAP analysis were cloned and sequenced. Real-time qPCR confirmation demonstrated that expression of 19 of these 21 differential bands was consistent with the expression observed during cDNA-SRAP analysis, with a deduced false positive rate of 9.5%. Sequence alignment indicated that 18 of 19 differentially expressed genes showed homologies from 19% to 100% to certain genes in GenBank, including the following genes: topoisomerase (EU048780), ethylene insensitive (EU048778), and tetraspanin (EU048770). A real-time qPCR assay showed that during 0-72 h after pathogen infection, expression of the topoisomerase and the ethylene insensitive genes was upregulated, whereas expression of the tetraspanin gene was downregulated, identical to the expression patterns observed under salicylic acid treatment. Therefore, all three genes are thought to play a role during S. scitamineum challenge, but with different functions. To our knowledge, this is the first report on the application of cDNA-SRAP in differential gene expression analysis of sugarcane during a sugarcane-S. scitamineum interaction. The results obtained also contribute to a better understanding of the molecular mechanisms associated with sugarcane-S. scitamineum interactions.
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Wang Y, Li L, Yao W, Song S, Sun JT, Pan J, Ren X, Li C, Okunishi E, Wang YQ, Wang E, Shao Y, Zhang YY, Yang HT, Schwier EF, Iwasawa H, Shimada K, Taniguchi M, Cheng Z, Zhou S, Du S, Pennycook SJ, Pantelides ST, Gao HJ. Monolayer PtSe₂, a New Semiconducting Transition-Metal-Dichalcogenide, Epitaxially Grown by Direct Selenization of Pt. NANO LETTERS 2015; 15:4013-8. [PMID: 25996311 DOI: 10.1021/acs.nanolett.5b00964] [Citation(s) in RCA: 200] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Single-layer transition-metal dichalcogenides (TMDs) receive significant attention due to their intriguing physical properties for both fundamental research and potential applications in electronics, optoelectronics, spintronics, catalysis, and so on. Here, we demonstrate the epitaxial growth of high-quality single-crystal, monolayer platinum diselenide (PtSe2), a new member of the layered TMDs family, by a single step of direct selenization of a Pt(111) substrate. A combination of atomic-resolution experimental characterizations and first-principle theoretic calculations reveals the atomic structure of the monolayer PtSe2/Pt(111). Angle-resolved photoemission spectroscopy measurements confirm for the first time the semiconducting electronic structure of monolayer PtSe2 (in contrast to its semimetallic bulk counterpart). The photocatalytic activity of monolayer PtSe2 film is evaluated by a methylene-blue photodegradation experiment, demonstrating its practical application as a promising photocatalyst. Moreover, circular polarization calculations predict that monolayer PtSe2 has also potential applications in valleytronics.
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Yao WJ, Zhang YY, Wang N, Lee JH. Rapid Solidification and Magnetic Properties of (Fe,Co)-(Fe,Co)17Gd2 Pseudo-Binary Eutectic Alloys. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2015; 15:2579-2585. [PMID: 26413709 DOI: 10.1166/jnn.2015.10250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The (Fe,Co)-(Fe,Co)17Gd2 pseudo-binary eutectic system has been determined by investigating phase compositions on the analysis of DSC, EDS and XRD. The rapid solidification of Gd7.3Fe30.56Co62.14, Gd9Fe30Co61 and Gd9.63Fe29.79Co60.58 ternary alloys is realized by single roller techniques. With a rising cooling rate, the equiaxed zone near the roller surface expands inwards. For Gd7.3Fe30.56Co62.14 hypoeutectic alloy ribbons, the feathery irregular eutectic zone shrinks and the grains (Fe,Co) near the free surface are refined. (Fe,Co) equiaxed dendrites plus the radial, irregular eutectic ultimately fill in the ribbon at the maximum cooling rate. For Gd9Fe30Co61 near-eutectic alloy ribbons, the growth direction of irregular eutectics near the free surface becomes more and more perpendicular to the surface, and finally the whole ribbons are occupied by the fine, irregular eutectic. The dendritic spacing of the (Fe,Co)17Gd2 phase which grows from the roller surface to the free surface in Gd9.63Fe29.79Co60.58 alloy ribbons becomes smaller. The grain size of the (Fe,Co)17Gd2 dendrite and the fraction of (Fe,Co) soft phase in alloy ribbons, which determine coercivity in the pseudo-binary eutectic system, vary with the increase of the cooling rate. Of the three alloys, the Gd9Fe30Co61 alloy has the best hard magnetic properties at Vr = 20 m/s; the maximum coercivity Hc is 431.34 Oe.
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Zhang L, Zhao HK, Wang YM, Yuan CP, Zhang YY, Li HY, Yan XF, Li QY, Dong YS. Genome-wide identification and expression analysis of the CPP-like gene family in soybean. GENETICS AND MOLECULAR RESEARCH 2015; 14:1260-8. [PMID: 25730064 DOI: 10.4238/2015.february.13.4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
Cysteine-rich polycomb-like protein (CPP-like) genes are a group of transcription factors with highly conserved cysteine-rich domains and are widely distributed in animals and plants, but do not present in yeast. Previous studies have shown that members of this family play important roles in the development of reproductive tissue and in the control of cell division in plants. In this study, whole genome identification of soybean CPP transcription factors was performed using bioinformatic methods. The results showed that there were 20 CPP transcription factors in the soybean genome, which encoded for 28 distinct CPP proteins. These transcription factors were distributed on 16 of 20 chromosomes. Phylogenetic relationship analysis showed that expression of CPP gene family members occurred before the differentiation of monocotyledons and dicotyledons. RNA-Seq analysis showed that 5 genes were highly expressed in all tissues, including Glyma10g39080, Glyma01g44670, Glyma101g66920, Glyma02g01540, and Glyma20g28740. One gene (Glyma14g14750) was specifically expressed in young leaves, while 2 genes (Glyma02g01540 and Glyma10g01580) were highly expressed in root nodules. Quantitative reverse transcriptase-polymerase chain reaction analysis revealed that the expression levels of most genes increased in the roots under high temperature stress. Our findings indicate that these genes are not only involved in growth and development, but also in the responses to high temperature stress in soybean roots.
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188
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Zhang Y, Pei Q, He X, Mai YW. A molecular dynamics simulation study on thermal conductivity of functionalized bilayer graphene sheet. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2015.01.034] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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189
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Zhang Y, Gu K, Wu H, Yang F, Bu L, Zhao C, Zhang Y. Correlation of ERCC1 expression in peripheral blood lymphocytes with outcomes of patients with gastric cancer treated with oxaliplatin-based adjuvant chemotherapy. GENETICS AND MOLECULAR RESEARCH 2015; 14:15921-9. [DOI: 10.4238/2015.december.7.3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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190
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Wang P, Huo H, Wang S, Miao Y, Zhang Y, Zhang Q, Li F, Liu L, Li W, Zeng Y, Huo J, Xiao H. Cloning, sequence characterization, and expression patterns of members of the porcine TSSK family. GENETICS AND MOLECULAR RESEARCH 2015; 14:14908-19. [DOI: 10.4238/2015.october.18.56] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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191
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Si H, Wang C, Zhang Y, Mu C, Zhan P, Li R, Song W. Molecular cloning and characterization of a novel Y-box gene from Sepiella maindroni. GENETICS AND MOLECULAR RESEARCH 2015; 14:5750-62. [DOI: 10.4238/2015.may.29.7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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192
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Yin Q, Lu HY, Yang CZ, Tian AJ, Yang QX, Zhang YY, Zheng XH, Li ZJ, Zheng XP. [Activation of transcription factor NF-κB in a rat model of cardiac fibrosis induced by β-adrenoceptor stimulation]. BEIJING DA XUE XUE BAO. YI XUE BAN = JOURNAL OF PEKING UNIVERSITY. HEALTH SCIENCES 2014; 46:889-893. [PMID: 25512278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To establish a model of cardiac fibrosis induced by isoproterenol (ISO), the non-selective β adrenoceptor agonist, injected subcutaneously for 7 days in rats, and to observe changes of transcription factor NF-κB in the model. METHODS Male SD rats weighing 280-320 g were injected with ISO (0.25 mg/kg/d) subcutaneously for 7 days to induce cardiac fibrosis. The collagen volume fraction was determined by quantitative morphometry of picrosirius red stained left ventricular sections. Collagen types I/III and IL-6 mRNA expressions were analyzed by real time PCR. The pathological changes of the heart were investigated by Hematoxylin and Eosin staining. NF-κB was localized by immunohistochemistry (IHC) and phosphorylated NF-κB levels were assessed by Western blot analysis. RESULTS Compared with the controls, ISO significantly elevated the sirius red stained area and collagen volume fraction (12.01±1.644 vs. 0.95±0.067, P<0.001). Similarly, ISO increased the mRNA expressions of collagen Iand collagen III of the heart compared with the controls (10.51±0.47 vs. 0.98±0.02,P<0.001 for collagen I; 9.58±1.33 vs. 1.02±0.02, P<0.001 for collagen III). The number of nuclei was increased and nuclear accumulation was presented in myocardial tissue induced by ISO. The mRNA expression of IL-6 increased in ISO group (1.64±0.18 vs. 1.04±0.07, P<0.01). ISO induced NF-κB nuclear translocation, accompanied by an increase in phosphorylation of NF-κB (10.83±2.05 vs. 1.05±0.27, P<0.001). CONCLUSION We conclude that the model of cardiac fibrosis can be successfully induced by ISO injected subcutaneously for 7 days in rats and the activation of nuclear factor NF-κB increased by β-adrenoceptor stimulation.
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Yang CZ, Tian AJ, Meng ZH, Wu JM, Zhang YY, Guo LJ, Li ZJ. [Establishment of a FVB/N mouse model of cardiac hypertrophy by isoprenaline]. BEIJING DA XUE XUE BAO. YI XUE BAN = JOURNAL OF PEKING UNIVERSITY. HEALTH SCIENCES 2014; 46:906-910. [PMID: 25512281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To investigate the condition of isoprenaline (ISO)-induced cardiac hypertrophy in the FVB/N mouse. METHODS ISO (30 mg/kg/d) was administered either by daily subcutaneous injection, or by continuous infusion via an implanted osmotic minipump. The mice in each mode of administration were randomly divided into two groups. For subcutaneous injection: the mice received ISO or saline through daily subcutaneous injection for 2 weeks. The mice for minipump: the mice received continuous infusion of ISO via an implanted osmotic minipump for 2 weeks, or received sham operation as the control to mimipump. The ratio of heart weight to tibia length (HW/TI), the diastolic left ventricular posterior wall thickness (dLVPW) were used to indicate cardiac hypertrophy. Interstitial fibrosis was examined with picrosirius red staining. RESULTS ISO (30 mg/kg/d) administered by daily subcutaneous injection did not lead to cardiac hypertrophy or fibrosis in the FVB/N mice, and 50% of the mice died before the end point. The mice receiving ISO via minipumps showed significant increase in HW/TI [(10.60±0.40 ) mg/mm vs. (7.93±0.19) mg/mm,P<0.001] and dLVPW [(0.87±0.03) mm vs. (0.68±0.06)mm,P=0.0116]. ISO administered via minipumps did not induce cardiac fibrosis. All the mice in this group survived to the end point. CONCLUSION ISO (30 mg/kg/d) administered by continuous infusion via a minipump for 2 weeks can lead to significant cardiac hypertrophy.
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Li YS, Meng XY, Zhou Y, Zhang YY, Meng XM, Yang L, Hu P, Lu SY, Ren HL, Liu ZS, Wang XR. Magnetic bead and gold nanoparticle probes based immunoassay for β-casein detection in bovine milk samples. Biosens Bioelectron 2014; 66:559-64. [PMID: 25522084 DOI: 10.1016/j.bios.2014.12.025] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 11/27/2014] [Accepted: 12/08/2014] [Indexed: 10/24/2022]
Abstract
In this work, a double-probe based immunoassay was developed for rapid and sensitive determination of β-casein in bovine milk samples. In the method, magnetic beads (MBs), employed as supports for the immobilization of anti-β-casein polyclonal antibody (PAb), were used as the capture probe. Colloidal gold nanoparticles (AuNPs), employed as a bridge for loading anti-β-casein monoclonal antibody (McAb) and horseradish peroxidase (HRP), were used as the amplification probe. The presence of β-casein causes the sandwich structures of MBs-PAb-β-casein-McAb-AuNPs through the interaction between β-casein and the anti-β-casein antibodies. The HRP, used as an enzymatic-amplified tracer, can catalytically oxidize the substrate 3,3',5,5'-tetramethylbenzidine (TMB), generating optical signals that are proportional to the quantity of β-casein. The linear range of the immunoassay was from 6.5 to 1520ngmL(-1). The limit of detection (LOD) was 4.8ngmL(-1) which was 700 times lower than that of MBs-antibody-HRP based immunoassay and 6-7 times lower than that from the microplate-antibody-HRP based assay. The recoveries of β-casein from bovine milk samples were from 95.0% to 104.3% that had a good correlation coefficient (R(2)=0.9956) with those obtained by an official standard Kjeldahl method. For higher sensitivity, simple sample pretreatment and shorter time requirement of the antigen-antibody reaction, the developed immunoassay demonstrated the viability for detection of β-casein in bovine milk samples.
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Zhang YY, Wang SY, Miao YW, Li WZ, Zhang QL, Li FQ, Liu LX, Huo HL, Huo JL. Isolation, molecular cloning, and characterization of a novel porcine lymphotoxin beta receptor gene. GENETICS AND MOLECULAR RESEARCH 2014; 13:9766-76. [PMID: 25501186 DOI: 10.4238/2014.november.27.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The lymphotoxin beta receptor (LTβR) is a member of the tumor necrosis factor family of receptors (TNFR). It plays a role in regulating lymphoid organogenesis and homeostasis of the immune system. In the present study, the full coding region of a putative LTβR gene of Sus scrofa was amplified by reverse transcription-polymerase chain reaction (RT-PCR) and cloned for the first time (accession Nos. JX457347 and AFU74012). In addition, analysis of the tissue expression profile was carried out via RT-PCR. The full-length coding region of porcine LTβR had 1266 nucleotides (molecular weight, 45.61 kDa; pI, 5.71) and encoded 421 amino acids. Bioinformatic prediction indicates that LTβR belongs to the TNFR superfamily and contains a TNFR domain. The sequence homology analysis revealed that the amino acid sequences of S. scrofa LTβR had 82.9, 82.4, 81.3, 80.5, 78.7, 74.6, and 73.0% identity with those of Equus caballus, Canis lupus, Ailuropoda melanoleuca, Oryctolagus cuniculus, Bos taurus, Mus musculus, and Homo sapiens, respectively. The phylogenetic tree based on the amino acid sequences of LTβR from 8 species revealed that S. scrofa was more closely related to E. caballus, C. lupus, and A. melanoleuca. RT-PCR analysis showed that the porcine LTβR gene was differentially expressed (e.g., high, moderate, low, or nonexistent) in various tissues (e.g., prostate, pituitary, brainstem, and esophagus, respectively). This may be related to differences in the regulation of LTβR in the different tissues.
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Li Y, Zhou Y, Meng X, Zhang Y, Song F, Lu S, Ren H, Hu P, Liu Z, Zhang J. Gold nanoparticle aggregation-based colorimetric assay for β-casein detection in bovine milk samples. Food Chem 2014; 162:22-6. [DOI: 10.1016/j.foodchem.2014.04.049] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 02/09/2014] [Accepted: 04/12/2014] [Indexed: 10/25/2022]
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Xiao WD, Zhang YY, Tao L, Aït-Mansour K, Chernichenko KY, Nenajdenko VG, Ruffieux P, Du SX, Gao HJ, Fasel R. Impact of heterocirculene molecular symmetry upon two-dimensional crystallization. Sci Rep 2014; 4:5415. [PMID: 24957140 PMCID: PMC4067611 DOI: 10.1038/srep05415] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Accepted: 06/03/2014] [Indexed: 01/11/2023] Open
Abstract
Despite the development of crystal engineering, it remains a great challenge to predict the crystal structure even for the simplest molecules, and a clear link between molecular and crystal symmetry is missing in general. Here we demonstrate that the two-dimensional (2D) crystallization of heterocirculenes on a Au(111) surface is greatly affected by the molecular symmetry. By means of ultrahigh vacuum scanning tunneling microscopy, we observe a variety of 2D crystalline structures in the coverage range from submonolayer to monolayer for D8h-symmetric sulflower (C16S8), whereas D4h-symmetric selenosulflower (C16S4Se4) forms square and rectangular lattices at submonolayer and monolayer coverages, respectively. No long-range ordered structure is observed for C1h-symmetric selenosulflower (C16S5Se3) self-assembling at submonolayer coverage. Such different self-assembly behaviors for the heterocirculenes with reduced molecular symmetries derive from the tendency toward close packing and the molecular symmetry retention in 2D crystallization due to van der Waals interactions.
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Zhang YY, Hou LQ, Zhao TY. Effects of Acarbose on Polycystic Ovary Syndrome: A Meta-analysis. Exp Clin Endocrinol Diabetes 2014; 122:373-8. [PMID: 24941435 DOI: 10.1055/s-0034-1375676] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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199
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Li YS, Zhou Y, Meng XY, Zhang YY, Liu JQ, Zhang Y, Wang NN, Hu P, Lu SY, Ren HL, Liu ZS. Enzyme-antibody dual labeled gold nanoparticles probe for ultrasensitive detection of κ-casein in bovine milk samples. Biosens Bioelectron 2014; 61:241-4. [PMID: 24892786 DOI: 10.1016/j.bios.2014.05.032] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Accepted: 05/13/2014] [Indexed: 11/28/2022]
Abstract
A dual labeled probe was synthesized by coating gold nanoparticles (AuNPs) with anti-κ-CN monoclonal antibody (McAb) and horseradish peroxidase (HRP) enzyme on their surface. The McAb was used as detector and HRP was used as label for signal amplification catalytically oxidize the substrate. AuNPs were used as bridges between the McAb and HRP. Based on the probe, an immunoassay was developed for ultrasensitive detection of κ-CN in bovine milk samples. The assay has a linear response range within 4.2-560 ng mL(-1). The limit of detection (LOD) was 4.2 ng mL(-1) which was 10 times lower than that of traditional McAb-HRP based ELISA. The recoveries of κ-CN from three brand bovine milk samples were from 95.8% to 111.0% that had a good correlation (R(2)=0.998) with those obtained by official standard Kjeldahl method. For higher sensitivity and as simple as the traditional ELISA, the developed immunoassay could provide an alternative approach for ultrasensitive detection of κ-CN in bovine milk sample.
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Xiao Z, Li SW, Zhang YY, Wang Y, Li LL, Fan W. Niv versus dropping vitrification in cryopreservation of human ovarian tissue. CRYO LETTERS 2014; 35:226-231. [PMID: 24997840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
BACKGROUND The containers for vitrification of tissues include cryovials, copper grids, Pasteur pipettes, the solid-surface method and etc. Recently the acupuncture needle was used to achieve better result in vitrification of human ovarian tissue. OBJECTIVE To determine if the needle immersed vitrification method (NIV) is a promising approach to vitrify the human ovarian tissue. METHODS Human ovarian biopsies from five patients were vitrified using NIV and Dropping vitrification. After 14 days of in vitro culture, the incidence of apoptotic primordial follicles from fresh and vitrified groups was assessed by TUNEL assay. 17β-estradiol (E2) and progesterone (P4) were detected in the media after culturing of vitrified and fresh ovarian tissues. RESULTS The incidence of apoptotic primordial follicles was significantly higher in the dropping vitrification group than in the NIV group (P < 0.05). E2 and P4 concentrations were significantly higher in NIV groups than in Dropping vitrification group (P < 0.05). CONCLUSIONS NIV was an appropriate method to vitrify ovarian tissue by improving the growth potential of frozen-warmed ovarian tissue in vitro culture.
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