نتایج جستجو برای: biological invasion
تعداد نتایج: 529253 فیلتر نتایج به سال:
The arrival of an invasive species can have wide-ranging ecological impacts on native taxa, inducing rapid evolutionary responses in ways that either reduce the invader's impact or exploit the novel opportunity that it provides. The invasion process itself can cause substantial evolutionary shifts in traits that influence the invader's dispersal rate (via both adaptive and non-adaptive mechanis...
Background and Objectives: Increased expression of the CD97, nuclear factor-kB (NF-kB) and cyclooxygenase-2 (COX-2) has been found to play an important role in development of many cancers, including gastric neoplasm. However, the expression and biological behavior of CD97, NF-kB and COX-2 in gastric MALT (mucosa-associated lymphoid tissue) lymphoma has not been well investigated. Methods: The e...
Diversin was recently reported to play roles in Wnt and JNK pathways. However, the expression pattern and biological roles of diversin in human breast cancer have not been reported. In the present study, we found that diversin was overexpressed in breast cancer specimens by immunohistochemistry and western blot. Significant association was observed between diversin overexpression and TNM stage ...
OBJECTIVE Long non-coding RNAs (lncRNAs) play an important role in various cellular biological processes. It is also involved in the occurrence and development of the tumor. BCAR4 is reported to be highly expressed in breast cancer and promotes cell proliferation. However, the biological effects of BCAR4 in non-small cell lung cancer (NSCLC) remains unclear. PATIENTS AND METHODS qRT-PCR was p...
The speed at which biological range expansions occur has important consequences for the conservation management of species experiencing climate change and for invasion by exotic organisms. Rates of dispersal and population growth are known to affect the speed of invasion, but little is known about the effect of having a community of dispersal phenotypes on the rate of range expansion. We use re...
OBJECTIVE To determine if recombinant human bone morphogenetic protein-2 (rhBMP-2) has biological effects on the invasiveness of human oral squamous cell carcinoma (OSCCA) cell lines. STUDY DESIGN Laboratory investigation using six human OSCCA cell lines, with three cell lines having baseline gene expression of BMP-2 and three cell lines without baseline gene expression of BMP-2. METHODS Th...
BACKGROUND Carbonic anhydrase IX (MN/Ca9) catalyses the reversible metabolism of carbon dioxide to carbonic acid and has also been linked to malignant transformation and hypoxia in various cancers. AIMS To assess the expression and biological role of Ca9 in gastric cancer. METHODS Using gastric cancer cell lines and tissues, we studied expression of Ca9 by western blot analysis, immunohisto...
Host-parasite coevolution has rarely been observed in natural systems. Its study often relies on microparasitic infections introducing a potential bias in the estimation of the evolutionary change of host and parasite traits. Using biological invasions as a tool to study host-parasite coevolution in nature can overcome these biases. We demonstrate this with a cross-infection experiment in the i...
Gastric cancer (GC) is one of the most prevalent gastrointestinal malignancies. Long noncoding RNA (lncRNA) DANCR is a newly identified oncogenic lncRNA. However, the functional role and underlying molecular mechanisms of DANCR involved in GC progress remain unclear. In the present study, we investigated the biological function and underlying mechanisms of DANCR in GC cell migration and invasio...
BACKGROUND Inflammatory cell infiltration around the sites of carcinoma invasion is believed to play important roles in carcinoma biological behavior. MATERIALS AND METHODS The status of inflammatory cell infiltration at the sites of frank invasion in 97 cases of esophageal squamous cell carcinoma (SCC) were examined, with special emphasis on the status of tumor-associated tissue eosinophilia...
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