نتایج جستجو برای: neural tumor

تعداد نتایج: 725597  

Journal: :IEEE Access 2023

Aiming at the task of automatic brain tumor segmentation, this paper proposes a new DenseTrans network. In order to alleviate problem that convolutional neural networks(CNN) cannot establish long-distance dependence and obtain global context information, swin transformer is introduced into UNet++ network, local feature information extracted by layer in UNet++. then, high resolution layer, shift...

Journal: :International journal of oncology 2009
Shinji Amano Shaoyi Li Chunyu Gu Yun Gao Shinichiro Koizumi Seiji Yamamoto Susumu Terakawa Hiroki Namba

In our previous study, we successfully treated an established C6 brain tumor using neural stem cells transduced with the herpes simplex virus-thymidine kinase gene (HSVtk) and ganciclovir in the rat. In the present study, we investigated the use of mesenchymal stem cells (MSCs), obtained from adult rats and transduced with HSVtk (MSCtk cells), instead of neural stem cells because MSCs are much ...

2011
Sanna-Maria Hede Inga Nazarenko Monica Nistér Mikael S. Lindström

Malignant glioma is the most common brain tumor in adults and is associated with a very poor prognosis. Mutations in the p53 tumor suppressor gene are frequently detected in gliomas. p53 is well-known for its ability to induce cell cycle arrest, apoptosis, senescence, or differentiation following cellular stress. That the guardian of the genome also controls stem cell self-renewal and suppresse...

2013
Lauren A. Gillory Michael L. Megison Jerry E. Stewart Elizabeth Mroczek-Musulman Hugh C. Nabers Alicia M. Waters Virginia Kelly Jennifer M. Coleman James M. Markert G. Yancey Gillespie Gregory K. Friedman Elizabeth A. Beierle

Despite intensive research efforts and therapeutic advances over the last few decades, the pediatric neural crest tumor, neuroblastoma, continues to be responsible for over 15% of pediatric cancer deaths. Novel therapeutic options are needed for this tumor. Recently, investigators have shown that mice with syngeneic murine gliomas treated with an engineered, neuroattenuated oncolytic herpes sim...

2010
Pedro Castelo-Branco Cindy Zhang Tatiana Lipman Mayumi Fujitani Loen Hansford Ian Clarke Calvin B. Harley Robert Tressler David Malkin Erin Walker David R. Kaplan Uri Tabori

Purpose: Cancer recurrence is one of the major setbacks in oncology. Maintaining telomeres is essential for sustaining the limitless replicative potential of such cancers. Because telomerase is thought to be active in all tumor cells and normal stem cells, telomerase inhibition may be nonspecific and have detrimental effects on tissue maintenance and development by affecting normal stem cell se...

Journal: :Anticancer research 2010
Davide Schiffer Laura Annovazzi Valentina Caldera Marta Mellai

This review begins with the description of the nervous cytogenesis, proliferation of primitive cells, migration and differentiation with antigen expression and regulation through factors. Emphasis is given to neural stem cells, progenitors and to radial glia as belonging to early stages of gliogenesis. Experimental production of brain tumors in the rat by transplacental administration of ethyln...

Journal: :Anticancer research 2005
Joydeep Mukherjee Anirban Ghosh Pallab Sarkar Malabika Mazumdar Chandra Banerjee Swapna Chaudhuri

BACKGROUND Immunopotentiating agents are the best options in cancer therapeutics because they can specifically destroy tumor cells via immunocytes, which are mostly apoptotic in nature. Previously, immunotherapy with T11TS / SLFA-3 in a ethyl-nitrosourea (ENU)-induced animal model (Druckrey rats) of neural neoplasm showed a significant tumor mass destruction by augmenting the cellular immune st...

2010
Pedro Castelo-Branco Cindy Zhang Tatiana Lipman Mayumi Fujitani Loen Hansford Ian Clarke Calvin B. Harley Robert Tressler David Malkin Erin Walker David R. Kaplan Peter Dirks Uri Tabori

Purpose: Cancer recurrence is one of the major setbacks in oncology. Maintaining telomeres is essential for sustaining the limitless replicative potential of such cancers. Because telomerase is thought to be active in all tumor cells and normal stem cells, telomerase inhibition may be nonspecific and have detrimental effects on tissue maintenance and development by affecting normal stem cell se...

2012
Tobias Bergström Karin Forsberg-Nilsson

Neural stem cells are the origins of neurons and glia and generate all the differentiated neural cells of the mammalian central nervous system via the formation of intermediate precursors. Although less frequent, neural stem cells persevere in the postnatal brain where they generate neurons and glia. Adult neurogenesis occurs throughout life in a few limited brain regions. Regulation of neural ...

چهرئی, علی, ارجمندی رفسنجانی, خدیجه, وثوق, پروانه, سید سرابی, محمد ,

ABSTRACT Neuroblastoma is a tumor with neural cells origin. It usually originated from adrenal gland and sympathetic ganglions. This tumor is the most common tumor in infants and is in forth grade amonge tumors in childhood. In this reaserch we determine to study the prognostic factors in survival of children with neuroblastoma.This is an analytic cross- sectional reaserch on 119 ...

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