نتایج جستجو برای: b cell
تعداد نتایج: 2293960 فیلتر نتایج به سال:
زمینه و هدف: لنفوم اولیه پوستی به دو گروه لنفوم پوستی t-cell و b-cell تقسیم می شوند. این مطالعه به هدف تقسیم بندی هیستوپاتولوژیک و مشخص شدن مشخصات دموگرافیک بیماران ایرانی انجام گرفت.روش بررسی: 234 بیمار مبتلا به لنفوم اولیه پوست که در مدت چهار سال به بیمارستان رازی، دانشگاه علوم پزشکی تهران مراجعه نمودند مورد تحقیق قرار گرفتند. اطلاعات بیماران با مطالعه پرونده جمع آوری شد، لام ها و مدارک مجدداً...
background: burkitt lymphoma is a common subtype of non-hodgkin lymphoma in children. it has a rapid and aggressive clinical course with frequent involvement of bone marrow and central nervous system. systemic chemotherapy is the mainstay of the treatment for this malignancy in children. in this systematic review, we discuss autologous and allogeneic hematopoietic stem cell transplantation (hsc...
background and objectives: epstein barr virus (ebv) is one of the members of herpesviridae family and a sub-category of gamma herpes virinae. ebv, which normally has cr2 or cd21 receptors on b-lymphocytes, has mutagenic features for them. the virus plays an important role in causing some malignant cancers. about 30% of the cases with non-hodgkin’s lymphoma are diffuse large b-cell lymphoma (dlb...
abstract background b cells play an important role in the immune system due to production of the immunoglobulin and secreting several cytokines. it has been shown that b cells produced successfully in the presence of stem cell factor (scf) and flt3 ligand (flt3l). il2, il7, and il15 cytokines as -common family have an essential cytokines may support either synergistically or in an additi...
چکید ه سابقه و هدف لوسمی لنفوبلاستی حاد( ALL )، با میزان بالای مرگ و میر در بزرگسالان همراه است در حالی که میزان درمان این بیماران تقریباً 40%-25% است. به منظور دستیابی به درمانهای مناسب، تشخیص و افتراق آنها از سایر زیرگروههای لوسمی مورد نیاز است. هدف اصلی از انجام این مطالعه، طبقهبندی زیرگروههای لوسمی لنفوبلاستی حاد با استفاده از روش فلوسیتومتری بود. مواد و روشها در یک مطالعه تو...
Background: CD93 has originally been known as a C1q receptor, and many studies have demonstrated that CD93 is expressed on hematopoietic stem cells, B cell progenitors, myeloid and monocytic cells. Moreover, CD93 is shown to be expressed on long-lived plasma cells, and CD93 deficient-mice display an impairment in plasma cell development. Objective: To investiga...
Enterohemorrhagic Escherichia coli (EHEC), such as E. coli O157:H7, are emerging food-borne pathogens worldwide. This micro-organism can damage the epithelial tissue of the large intestine. The cytotoxic effects can be neutralized by probiotics such as Bifidobacterium bifidum. Probiotics are viable cells that have beneficial effects on the health of the host. The preventing activity of B. bifid...
Objective(s): Oxidative stress has been established as a key cause of alcohol-induced hepatotoxicity. Licochalcone B, an extract of licorice root, has shown antioxidative properties. This study was to investigate the effects and mechanisms of licochalcone B in ethanol-induced hepatic injury in an in vitro study. Materials and Methods: An in vitro model of Ethanol-induced cytotoxicity in BRL cel...
Background: Immunophenotyping in the rare group of nodal Peripheral T-cell Lymphomas (PTCL) exposes interesting features such as T-cell marker downregulation and paradoxically, the presence of reactive, clustered large-sized CD20 positive B-cells (B-cell proliferation). Epstein-Barr virus (EBV) has been suggested as a putative etiology in pathogenesis of B-cell lymphoma. We aimed to review the ...
enterohemorrhagic escherichia coli (ehec), such as e. coli o157:h7, are emerging food-borne pathogens worldwide. this micro-organism can damage the epithelial tissue of the large intestine. the cytotoxic effects can be neutralized by probiotics such as bifidobacterium bifidum. probiotics are viable cells that have beneficial effects on the health of the host. the preventing activity of b. bifid...
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