14 results on '"Yu Min Tian"'
Search Results
2. Expression of nerve growth factor and its receptor, tyrosine kinase receptor A, in rooster testes
- Author
-
Yuhong Su, Chunqiang Wang, Hong-yan Zhu, Yu-min Tian, and Wei Ma
- Subjects
Male ,endocrine system ,medicine.medical_specialty ,animal structures ,Blotting, Western ,Gene Expression ,Tropomyosin receptor kinase A ,Real-Time Polymerase Chain Reaction ,Receptor tyrosine kinase ,Follicle-stimulating hormone ,Endocrinology ,Food Animals ,Internal medicine ,Nerve Growth Factor ,Testis ,medicine ,Animals ,Low-affinity nerve growth factor receptor ,Receptor, trkA ,Receptor ,biology ,Reverse Transcriptase Polymerase Chain Reaction ,General Medicine ,Sertoli cell ,Nerve growth factor ,medicine.anatomical_structure ,nervous system ,biology.protein ,RNA ,Animal Science and Zoology ,Follicle Stimulating Hormone ,Chickens ,Spermatogenesis - Abstract
Nerve growth factor (NGF), which is required for the survival and differentiation of the nervous system, is also thought to play an important role in the development of mammalian reproductive tissues. To explore the function of NGF in the male reproductive system of non-mammalian animals, we determined the presence of NGF and its receptor, tyrosine kinase receptor A (TrkA), in rooster testes and investigated the regulation of NGF and TrkA expression by follicle-stimulating hormone (FSH). The mRNA and protein levels of NGF and TrkA in 6-week-old rooster testes were lower than those in 12-, 16- or 20-week age groups; levels were highest in the 16-week group. Immunohistochemistry showed that NGF and TrkA were both detected in spermatogonia, spermatocytes and spermatids. NGF immunoreactivity was observed in Leydig cells and strong TrkA signals were present in Sertoli cells. Meanwhile, FSH increased TrkA transcript levels in rooster testes in a dose-dependent manner. We present novel evidence for the developmental and FSH-regulated expression of the NGF/TrkA system, and our findings suggest that the NGF/TrkA system may play a prominent role in chicken spermatogenesis.
- Published
- 2015
3. Inhibition of alpha-hemolysin expression by resveratrol attenuates Staphylococcus aureus virulence
- Author
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Yu-Min Tian, Li Li, Chun-Qiang Wang, Feng Tang, Shu-Quan Wang, Xian-Mei Meng, Bing Li, and Tie-Liang Wang
- Subjects
0301 basic medicine ,Staphylococcus aureus ,RNAIII ,030106 microbiology ,Bacterial Toxins ,Virulence ,Drug resistance ,Human leukocyte antigen ,Biology ,Resveratrol ,medicine.disease_cause ,Microbiology ,03 medical and health sciences ,chemistry.chemical_compound ,Hemolysin Proteins ,Mice ,Pneumonia, Staphylococcal ,medicine ,Animals ,Humans ,Enzyme Inhibitors ,Effector ,Hemolysin ,Coculture Techniques ,Disease Models, Animal ,030104 developmental biology ,Infectious Diseases ,Treatment Outcome ,chemistry ,A549 Cells - Abstract
Staphylococcus aureus is an important zoonotic pathogen that causes a variety of life-threatening diseases. The increasing emergence of drug resistance further complicates the treatment of S. aureus infections. The critical role of alpha-hemolysin (Hla) in virulence renders this toxin an ideal target for the development of anti-infective agents for S. aureus. Here, We found that resveratrol, a natural compound widely found in fruits without antibacterial activity, could effectively inhibit Hla expression via down-regulating the transcription of hla, the gene that encodes Hla, and RNAIII, the effector molecule of the agr system. The addition of resveratrol to a co-culture system of S. aureus and A549 cells significantly alleviated bacteria-mediated cellular injury. Furthermore, treatment with resveratrol effectively protected mice from S. aureus pneumonia. Our results established resveratrol as an effective Hla inhibitor that reduces Hla expression without antimicrobial activity and can be further developed into novel therapeutics against S. aureus infections.
- Published
- 2018
4. Study on Simulation of Evacuation Behavior to a Crowd in Public Buildings
- Author
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Yu Min Tian
- Subjects
Engineering ,Facilities design ,Hand calculation ,ComputingMethodologies_SIMULATIONANDMODELING ,business.industry ,Crowd management ,General Medicine ,Computer security ,computer.software_genre ,Transport engineering ,Crowd evacuation ,Greenwich ,business ,Crowd psychology ,computer ,Simulation methods - Abstract
Generally traditional research methods to crowd evacuation depend on experiences and hand calculation, but the errors of these methods are clear. So computer simulation methods have become popular all over the world. The paper studied crowd evacuation behaviors by building EXODUS developed by University of Greenwich. Evacuation time and behaviors were simulated and some differences were compared with the results by hand and experiences, which can give theoretic and methodological guides to crowd management, crowd facilities design, evacuation analysis in buildings, establishment of emergency preplanning and so on.
- Published
- 2014
5. Cloning and transcriptional activity analysis of the porcine cofilin 2 gene promoter
- Author
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Yu-min Tian, Jia-mei Wang, Bin Lang, Yu-hong Su, Hai-ting Du, and Hong-yan Zhu
- Subjects
Cofilin 2 ,Base Sequence ,Transcription, Genetic ,Swine ,Sequence analysis ,Molecular Sequence Data ,Promoter ,General Medicine ,Biology ,Molecular biology ,DNA binding site ,Mice ,genomic DNA ,NIH 3T3 Cells ,Genetics ,Transcriptional regulation ,Primer walking ,Animals ,Humans ,Luciferase ,Cloning, Molecular ,Promoter Regions, Genetic ,Gene ,HeLa Cells - Abstract
Cofilins (CFL), including CFL1 and CFL2, are members of the family of actin-binding proteins in eukaryote. CFL2 is predominantly expressed in mammalian skeletal muscle and heart and is important to muscle fiber formation and muscular regeneration. To study transcriptional regulation of porcine CFL2, a 2.5 kb upstream sequence starting from the major CFL2 transcriptional start site was cloned by genome walking. Twelve DNA fragments of the 5' flank region of the porcine CFL2 gene were further isolated from porcine genomic DNA via PCR and inserted into the luciferase reporter vector pGL4.10 to make 12 CFL2 reporter constructs. All reporter vectors were transfected into C2C12, NIH3T3, or Hela cells and their relative luciferase activity measured after 48 h, respectively. Bioinformatics analysis suggested that there were two TATA-boxes at the -508 bp and -453 bp, as well as a GC-box and a CAAT-box in this sequence. Additional transcription factor binding sites including SP1, AP1, AP2, and GATA-1 sites were also predicted. The transcriptional activity of pGL4.10-1554 (1502 bp to +51 bp) was the strongest, and the promoter's active region was mapped to a region from -1502 bp to -1317 bp. Our data provide a foundation for future studies into transcriptional regulation of CFL2.
- Published
- 2014
6. Evacuation Simulation to a Library Room of a University Based on Computer Software Building EXODUS
- Author
-
Yu Min Tian
- Subjects
Engineering ,Facilities design ,Crowd evacuation ,business.industry ,Data_GENERAL ,Crowd management ,Computer software ,General Medicine ,Computer security ,computer.software_genre ,business ,computer - Abstract
Panic is a typical psychological characteristic of crowd in a fire, which can cause serious casualties. By discussing psychology and behavior of crowd in panic, the paper analyzes behavior of crowd evacuation, and utilizes Building EXODUS to simulate crowd behaviors to a library room of a university. Some instructional conclusions are got, which can give theoretic and methodological guides to crowd management, crowd facilities design, evacuation analysis in buildings, establishment of emergency preplanning and so on.
- Published
- 2014
7. An Improved Multilevel Halftoning Algorithm Using Neighborhood Growing
- Author
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Rong Pan, Yu Min Tian, and Wei Feng
- Subjects
Error diffusion ,Halftone ,Improved algorithm ,ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION ,Process (computing) ,General Medicine ,Enhanced Data Rates for GSM Evolution ,Algorithm ,Image (mathematics) ,Mathematics - Abstract
In order to reduce banding and blurry edges produced by the conventional multilevel error diffusion algorithm in the digital halftone process, an improved multilevel error diffusion algorithm using neighborhood growing is proposed. According to human visual properties, the algorithm uses banding edge neighborhood alternately grow toward the center to revise halftone image. Experimental results show that the halftone image obtained by the improved algorithm eliminates banding and a better visual effect is achieved with the enhanced edges.
- Published
- 2014
8. Single-nucleotide polymorphisms and activity analysis of the promoter and enhancer of the pig lactase gene
- Author
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Hai-ting Du, Jia-mei Wang, Cai-feng Ba, Hong-yan Zhu, Wei Zhao, Yu-hong Su, Yu-min Tian, and Xiao-li Tao
- Subjects
Genetics ,Lactose intolerance ,medicine.medical_treatment ,Sus scrofa ,Promoter ,Single-nucleotide polymorphism ,Lactase ,General Medicine ,Biology ,medicine.disease ,Polymorphism, Single Nucleotide ,Molecular biology ,Enhancer Elements, Genetic ,Gene Expression Regulation ,Genotype ,Gene expression ,medicine ,Animals ,Promoter Regions, Genetic ,Enhancer ,Gene - Abstract
Lactose intolerance in northern Europeans is strongly associated with a single-nucleotide polymorphism (SNP) located 14 kb upstream of the human lactase gene: -13,910 C/T. We examined whether SNPs in the 5' flanking region of the pig lactase gene are similar to those in the human gene and whether these polymorphisms play a functional role in regulating pig lactase gene expression. The 5' flanking region of the lactase gene from several different breeds of pigs was cloned and analyzed for gene regulatory activity of a luciferase reporter gene. One SNP was found in the enhancer region (-797 G/A) and two were found in the promoter region (-308G/C and -301 A/G). The promoter C-308,G-301(Pro-CG) strongly promotes the expression of the lactase gene, but the promoter G-308,A-301(Pro-GA) does not. The enhancer A-797(Enh-A) genotype for Pro-GA can significantly enhance promoter activity, but has an inhibitory effect on Pro-CG. The Enhancer G-797(Enh-G) has a significant inhibitory effect on both promoters. In conclusion, the order of effectiveness on the pig lactase gene is Enh-A+Pro-GA>Enh-A/G+Pro-CG>Enh-G+Pro-GA.
- Published
- 2014
9. The Simulation of Speech Enhancement Based on Variable Leaky LMS Algorithm
- Author
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Bi Nang Li, Yu Min Tian, Wei Tan, and Zhi Huai Wang
- Subjects
Computer science ,General Engineering ,Signal ,Adaptive filter ,Least mean squares filter ,Speech enhancement ,symbols.namesake ,Noise ,Computer Science::Sound ,Gaussian noise ,symbols ,Electronic engineering ,Fading ,Algorithm - Abstract
In order to eliminate the speech signal fading induced by noise, this paper proposes a new variable leaky LMS algorithm on the basis of the adaptive filter in combination with the advantages of the leakage LMS algorithm and the variable step size LMS algorithm, and analyzes its principle. After the new algorithm is used to simulate speech with noise, the result shows that the proposed algorithm has a good ability to suppress Gaussian noise and excellent tracking performance, proving the correctness of the algorithm and the feasibility of simulation.
- Published
- 2014
10. The Design of a Maintenance Simulation System for Lasers
- Author
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Yu Min Tian, Bao Hui Zhu, Dong Li, and Wen Feng Zeng
- Subjects
Engineering ,business.industry ,Transistor ,General Engineering ,Serial port ,Hardware_PERFORMANCEANDRELIABILITY ,Fault (power engineering) ,Fault detection and isolation ,law.invention ,Printed circuit board ,Microcontroller ,Software ,law ,Detection theory ,business ,Simulation - Abstract
The MCU system is used to simulate laser signals and the signals received by avalanche transistors so as to conduct signal detection of actual circuit boards.With establishing a library of fault cases through the computer serial port, the MCU and the fault setting module can be based on to realize the fault simulation of actual circuit boards and conduct the training in fault detection and removal. The designed fault setting software and assessment software can be combined to assess the training effects of fault analysis, detection and removal. The developed prototype passes the test of training, showing good results and high training benefits
- Published
- 2014
11. [A family of congenital fibrosis of extraocular muscles associated with juvenile canities]
- Author
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Jun, Zhao, Kan-Xing, Zhao, Ning-Dong, Li, Yong-Hong, Jiao, Yong-Jia, Yang, and Yu-Min, Tian
- Subjects
Adult ,Male ,Adolescent ,Eye Diseases, Hereditary ,Middle Aged ,Fibrosis ,Pedigree ,Young Adult ,Phenotype ,Oculomotor Muscles ,Child, Preschool ,Humans ,Female ,Hair Diseases ,Aged ,Retrospective Studies - Abstract
To analyze the clinical manifestations of affected individuals in a family of congenital fibrosis of the extraocular muscles (CFEOM) with juvenile canities.All affected and unaffected individuals were retrospectively analyzed in this study. The clinical features include genetic aspects, sex, age, ptosis, restriction of eye movement, aberrant innervation and surgical procedures, were evaluated.This pedigree was inherited as autosomal dominant. There were 14 cases suffering from congenital fibrosis of extraocular muscles in four generations. They had congenital blepharoptosis, head-tilt, chin lift and primary gaze fixed in a hypotrophic position. But vertical and horizontal positions of the eye and restriction of eye movement were different among affected individuals. Some of them also had pupillary abnormally, aberrant innervation and juvenile canities. Inferior rectus recession improved hypotropia in patients with infraducted eyes and chin elevation. Horizontal muscle recession corrected horizontal strabismus satisfactorily in most cases. Ptosis was repaired by frontalis sling or levator resection.This is the first report of CFEOM associated with juvenile canities. There was phenotypic heterogeneity in this CFEOM pedigree. So the phenotype alone is not sufficient to distinguish among the 3 genotypically distinct CFEOM syndromes. The combination of clinical characteristics and genetic analysis are the basis for the establishment of diagnosis.
- Published
- 2007
12. [Advances in clinical and molecular genetics of congenital cranial dysinnervation disorders]
- Author
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Jun, Zhao, Kan-xing, Zhao, and Yu-min, Tian
- Subjects
Ophthalmoplegia ,Facial Paralysis ,Cranial Nerves ,Humans ,Neuromuscular Diseases - Abstract
Congenital cranial dysinnervation disorders (CCDDs) are congenital non-progressive, sporadic or familial abnormalities of cranial musculature that result from developmental abnormalities of, or the complete absence of, one or more cranial nerves with primary or secondary muscle dysinnervation. These disorders include vertical disorders of ocular motility, horizontal disorders of ocular motility and disorders with abnormalities of facial motility that were previously referred to as "congenital fibrosis syndromes". The advances in clinical and molecular genetics of congenital cranial dysinnervation disorders are reviewed.
- Published
- 2007
13. The Coarse-Grained Computing P2P Algorithm Based on SPKI
- Author
-
Yu-min Tian and Yong Ma
- Subjects
Task (computing) ,Server farm ,DCE/RPC ,Common Object Request Broker Architecture ,Computer science ,computer.internet_protocol ,Operating system ,Certification ,Peer-to-peer ,Microsoft RPC ,computer.software_genre ,computer ,XML - Abstract
Distributed components, such as CORBA and COM+, implement the two-way invocation between the client and server using RPC in the distributed network. RPC requires that server must be certain and online all the time, which will endow the server with heavy burden and the system with single dependence on the server. The task certification and result certification, based on SPKI, are proposed to transform the RPC to Request/Response of XML-formed Certification. DHT is used to store and look up the certificates, which enable MR2CG (the Method of Coarse-Grained P2P Computing Based on XML Request/Response) to get rid of the limitation of the server and support the different kinds of Coarse-grained P2P computing.
- Published
- 2006
14. Cloning and transcriptional activity analysis of the porcine cofilin 2 gene promoter.
- Author
-
Jia-mei Wang, Bin Lang, Hong-yan Zhu, Hai-ting Du, Yu-min Tian, and Yu-hong Su
- Subjects
- *
MOLECULAR cloning , *GENETIC transcription , *PROMOTERS (Genetics) , *MICROFILAMENT proteins , *GENE expression in mammals , *TRANSCRIPTION factors , *BIOINFORMATICS - Abstract
Cofilins (CFL), including CFL1 and CFL2, are members of the family of actin-binding proteins in eukaryote. CFL2 is predominantly expressed in mammalian skeletal muscle and heart and is important to muscle fiber formation and muscular regeneration. To study transcriptional regulation of porcine CFL2, a 2.5kb upstream sequence starting from the major CFL2 transcriptional start site was cloned by genome walking. Twelve DNA fragments of the 5' flank region of the porcine CFL2 gene were further isolated from porcine genomic DNA via PCR and inserted into the luciferase reporter vector pGL4.10 to make 12 CFL2 reporter constructs. All reporter vectors were transfected into C2C12, NIH3T3, or Hela cells and their relative luciferase activity measured after 48h, respectively. Bioinformatics analysis suggested that there were two TATA-boxes at the -508bp and -453bp, as well as a GC-box and a CAAT-box in this sequence. Additional transcription factor binding sites including SP1, AP1, AP2, and GATA-1 sites were also predicted. The transcriptional activity of pGL4.10-1554 (1502bp to +51bp) was the strongest, and the promoter's active region was mapped to a region from -1502bp to -1317bp. Our data provide a foundation for future studies into transcriptional regulation of CFL2. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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