The four principal gut epithelial cell lineages undergo continuous and rapid renewal during a geographically well-organized migration along the crypt-to-villus axis. The molecules that regulate their proliferation and differentiation programs are largely unknown. The large tumor antigen (TAg) of wild-type (wt) simian virus 40 (SV40) and its mutant derivatives represent tools for describing the ...

Background: Recurrent aphthous stomatitis (RAS) is the most common inflammatory ulcerative condition of oral cavity. The aim of this study was to compare the levels of the salivary Malondialdehyde (MDA) and total antioxidant capacity (TAC) and blood parameter in RAS versus healthy controls. Methods: This case-control study consisted of 28 patients with RAS and 28 age and sex -matched control...

Background: Recurrent aphthous stomatitis (RAS) is a common disease, which several etiologic factors have been considered for it. The infectious agents and immunological factors are the most suspected causes. Recently a few studies with varied results have been done to clarify the role of Helicobacter Pylori (H.pylori) in etiology of RAS. Objective: To find correlations between serum IgG and Ig...

Background and Aim: Recurrent aphthous stomatitis (RAS) is the most common oral mucosal lesion in the general population. Different treatments have been used for RAS, including herbal medicine. In this study, the randomized clinical trials (RCTs) on the effect of medicinal plants on RAS were systematically searched and reviewed. Materials and Methods: The literature from 1985 to 2015 in the ...

background and aims: recurrent aphthous stomatitis (ras) is one of the most common ulcerative diseases of the oral mucosa. definitive etiology of ras has not been conclusively established. there is no certain treatment for aphthous but some drugs such as steroid are commonly used for treatment of ras. regarding the effect of zinc on healing process of epithelial layer and cell division, in this...

abstract :  reovirus (respiratory enteric orphan virus), a naturally occurring benign human pathogen, has an inherent ability to target transformed and cancerous cells and cause their lysis, while leaving non-transformed cells relatively unaffected.  the efficiency of this innate oncolytic activity of reovirus correlates with expression of the ras oncogene.  cells expressing activated ras and t...

Background: Atheroemboli are the rule in any intervention and the leading cause of complications during percutaneous coronary intervention, carotid angioplasty (CAS), and probably after renal angioplasty stenting (RAS), which could explain the renal function deterioration after RAS in 20–30% of the cases. Several series of RAS under protection were reported using current embolic protection devi...

Background: Recurrent aphthous stomatitis (RAS) is one of the most common oral mucosal disorders with a prevalence 50-66%. The hematinic deficiencies including ferritin and vitamin B12 their role in prophylaxis development RAS not well known. Many studies have demonstrated high patients RAS. This study aimed to compare serum level recurrent ulcers healthy controls. Subjects, Materials Methods: ...

Mục tiêu: Trong những năm gần đây, chất ức chế thụ thể yếu tố tăng trưởng biểu mô Cetuximab đã chứng minh vai trò quan trọng của nó khi kết hợp với hóa trong điều trị ung thư đại tràng giai đoạn IV không có đột biến gen RAS/BRAF1. Chúng tôi thực hiện nghiên cứu này nhằm đánh giá quả và tác dụng mong muốn phác đồ trên đối tượng bệnh nhân tại viện K. Đối phương pháp cứu: Nghiên tả, hồi 40 chẩn đo...

We have analyzed genomic DNA sequences from 125 prospectively collected single unilateral primary breast carcinoma samples for the presence of alterations of c-myc, c-erbB-1, c-erbB-2, c-Ki-ras and c-Ha-ras protooncogenes. Amplification of the c-myc gene was found in 18% of the samples, and in one sample a non-germ line c-myc related DNA fragment or rearrangement was detected. We have found a s...