نتایج جستجو برای: آنالیز همبستگی کانونی cca
تعداد نتایج: 102805 فیلتر نتایج به سال:
The universal 3'-terminal CCA sequence of tRNA is built and/or synthesized by the CCA-adding enzyme, CTP:(ATP) tRNA nucleotidyltransferase. This RNA polymerase has no nucleic acid template, but faithfully synthesizes the defined CCA sequence on the 3'-terminus of tRNA at one time, using CTP and ATP as substrates. The mystery of CCA-addition without a nucleic acid template by unique RNA polymera...
Cholangiocarcinoma (CCA) is a rare cancer arising from the biliary tree with a poor prognosis and limited therapeutic options. Recent large scale molecular characterisation studies have identified recurrent genetic alterations in CCA which may be amenable to therapeutic targeting. In this review we explore the genomic landscape of CCA and examine results from trials of molecularly targeted agen...
An effective serum biomarker may improve cholangiocarcinoma (CCA) management. Periostin (PN) has been demonstrated to be associated with aggressive CCA. The current study evaluated PN in blood serum for its diagnostic and prognostic potential in patients with CCA. Sera of 68 patients with CCA were collected prior to treatment, and PN levels were measured using an ELISA. Sera from 50 normal cont...
BACKGROUND Up-regulation and association of nuclear factor kappa B (NF-κB) with carcinogenesis and tumor progression has been reported in several malignancies. In the current study, expression of NF-κB in cholangiocarcinoma (CCA) patient tissues and its clinical significance were determined. The possibility of using NF-κB as the therapeutic target of CCA was demonstrated. METHODOLOGY Expressi...
BACKGROUND CD155, an immunoglobulin-like adhesion molecule, plays an important role in carcinoma such as cells migration, proliferation, metastasis, and tumor immune. The upregulation of CD155 has been found in several human malignancies, but its expression in cholangiocarcinoma (CCA) still remains unclear. The aim of this study is to investigate CD155 expression and its correlations with clini...
گونه های گازرخ، پیر، و کلیر از عناصر درختی و درختچه ای ناحیة اقلیمی صحارا ـ سندی و حوزة نوبوسندین اند که سطوح وسیعی را در جنوب شرق ایران به صورت درختزارهای پراکنده پوشش می دهند. جهت بررسی رابطة بین عوامل خاکی با پراکنش آن ها، در گام نخست، نقشة پراکنش این گونه ها در محدودة جنوب شرق ایران با استفاده از تصاویر ماهواره ای، نقشه های توپوگرافی، و پیمایش زمینی تهیه و محدودة رویشگاهی هر گونه مشخص شد. د...
چکیده هدف از پژوهش حاضر کشف رابطه بین عملکرد تحصیلی و متغیرهای خودناتوان سازی تحصیلی، عزت نفس، پیشینه تحصیلی و جنسیت بوده است. به طور دقیق در این پژوهش، پژوهشگر به دنبال شناخت، تبیین و پیش بینی عملکرد تحصیلی از طریق متغیرهای عزت نفس، پیشینه تحصیلی و راهبردهای خودناتوان سازی بوده است. البته یکی از اهداف فرعی این پژوهش، تبیین خودناتوان سازی تحصیلی دانشجویان از طریق متغیرهای عزت نفس، عملکرد تحصیل...
Understanding the minimal assumptions from which we can build a publickey encryption scheme secure against chosen-ciphertext attacks (a CCA-secure scheme, for short) is a central question in both practical and theoretical cryptography. Following the large body of work on hardness and correctness amplification, we ask the question of how far we can weaken a CCA-secure encryption scheme so that a...
OBJECTIVES To estimate the national prevalence of cervical cancer (CCA) in women discharged from hospital after delivery, and to examine its associations with birth outcomes. METHODS We did a retrospective cross-sectional analysis of maternal hospital discharges in the United States (1998-2009). We used the Nationwide Inpatient Sample (NIS) database to identify hospital stays for women who ga...
Several infectious agents are considered to be causes of cancer in human, mainly hepatitis B and C viruses, high-risk human pailloma viruses, Helicobacter pylori, Clonorchis sinensis, and Opisthorchis viverrini. Here we described the evident research and the association between Helicobacter spp. and biliary tract cancer particularly cholangiocarcinoma (CCA). Global epidemiological studies have ...
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