نتایج جستجو برای: nk

تعداد نتایج: 21269  

انتظامی, کبری , تاجیک, نادر , شاهسوار, فرهاد ,

سلول‌های کشنده طبیعی (NK) زیرگروهی از لمفوسیت‌ها هستند که حدود 10% از کل لمفوسیت‌های خون محیطی را شامل می‌شوند. سلول‌های NK به دلیل نقش در پاسخ‌های ایمنی ذاتی، خط اول دفاع علیه عوامل عفونی و سرطان را فراهم می‌سازند. همچنین تصور می‌‌شود که این سلول‌ها در خودایمنی نیز نقش دارند. پذیرنده‌های شبه ایمونوگلوبولینی سلول کشنده (KIR) مولکول‌های سطحی تنظیم‌کننده‌ای هستند که بر روی سلول‌های NK و برخی زیر...

ژورنال: طب جنوب 2009
بارگاهی, افشار, ربانی چادگانی, عذرا, محمدحسن, زهیر,

زمینه: از آن جا که در طب سنتی از غضروف کوسه ماهی جهت درمان سرطان و به خصوص انواع مرتبط با سیستم ایمنی استفاده می‎شد، این احتمال وجود داشت که موادی در غضروف موجود باشد که قادر به تحریک و تقویت عمومی سلول های ایمنی بدن باشند. لذا در این تحقیق با توجه به پاسخ سلول های کشنده طبیعی (NK) سیستم ایمنی به طیف وسیعی از آنتی ژن ها بدون نیاز به ایمونیزاسیون قبلی، از آن جهت تخلیص پروتئین موثره غضروف کوسه م...

Shark cartilage is considered as a natural dietary supplement consisting of anti-angiogenic, immunostimulatory, and anti-inflammatory characteristics. Therefore, this study was designed to inspect the possibility that whitecheek shark (Carcharhinus dussumieri) cartilage proteins motivate expression of NKG2D, CXCR3, NKP46, and NKP44 receptors on natural killer cells and their activities against ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1999
K Iizuka D D Chaplin Y Wang Q Wu L E Pegg W M Yokoyama Y X Fu

Development of natural killer (NK) cells is thought to depend on interactions between NK progenitors and the bone marrow (BM) microenvironment; however, little is known about the molecular signals involved. Here we show that lymphotoxin (LT) provides an important signal for the development of both NK cells and NK/T cells. LTalpha-/- mice show marked reduction in splenic and BM NK and NK/T cell ...

2012
Pei Lin Wei-Ren Luo Jia-Hong Wang Chun-Yue Huang Shi-Jun Chen Hong-Min Xu Kai-Tai Yao Zhong-Xi Huang

Background Nasopharyngeal carcinoma, common in Southeast Asia, is mainly a non-keratinizing, squamous cell carcinoma (NK-NPC) and clinically heterogeneous. Methods Herein, we analyzed three human gene expression microarray datasets characterizing 81 NK-NPC tumors and 21 normal nasopharyngeal (NP) tissues to identify molecular subtypes of NK-NPC. In one of the datasets, QRT-PCR measurement of ex...

Journal: :Komunikácie 2022

The study object is a prototype of composite bridge prestressed concrete beam with length 42.0 m for road desks perception impact from motor vehicles in the form A14, NK-120 and NK-180 loads.

الیور, تی.دی, منصوری, م, نوری وال, ا.م.ای,

The base of this study has been demonstrated the use of different drugs and dosages on different tumour cell lines and finally the effect of these drugs on natural killerllimphokine activated killer (NK/LAK) Killing. Tumour cells as target , mononeuclear cell activated with inter leukin-2(LAK) as effector, anti cancer drugs like tamoxifen , pentoxifylline , cycloheximide and cisplatin as stimul...

Journal: :American journal of respiratory and critical care medicine 2000
C E Mapp D Miotto F Braccioni M Saetta G Turato P Maestrelli J E Krause V Karpitskiy N Boyd P Geppetti L M Fabbri

The precise locations of neurokinin (NK)-1 and NK-2 receptors in human airways, and their role in airway inflammatory diseases, have not been carefully examined. To determine the distribution of NK-1 and NK-2 receptors in human central airways, and to determine whether their distribution was different in smokers, we examined surgical specimens from patients undergoing lung resection for limited...

2014
Abdulwahab Al-Isa Abdulhamied Alfaddagh

Objectives: To assess the level of nutritional knowledge (NK) among male Kuwaiti college students and to correlate NK scores with different nutritional domains. Methods: A random sample of 378 students was asked to answer a questionnaire regarding socio-demographic and health-related factors and answer questions assessing their NK on different domains. Height and weight were measured. Results: ...

Journal: :Journal for ImmunoTherapy of Cancer 2021

Background Natural killer (NK) cells are immune that can detect and eliminate tumor bridge innate to adaptive responses. Tumor specific activation of NK is thus an area active investigation in oncology, but date has relied on complex biologic modalities (e.g., antibodies, fusion proteins, or cell therapies), each which inherent disadvantages this application. Thus, alternative approaches warran...

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