asthma is a chronic inflammatory disorder of the airways. the stress is a factor for asthma which indicates a disorder in the function of communicational mediators of nervous and  immunological systems  such  as  neurotransmitters.  a  study  indicated  that  blood serotonin concentration increases in asthmatic patients. other study indicates that one kind of the serotonin  receptors, named 5ht...

trehalose (a-d-glucosyl-[1,1]-a-d-glucopyranoside) is involved in mechanisms that coordinate metabolism with plant growth adaptation and development. the main objective of the current work was to find out whether trehalose feeding affects the expression of two genes involved in photosynthesis: one gene coding for photosystem1 subunit h (ps1-h) and the other for the light harvesting complex b1 (...

background: transient and stable transformation of host plants are the common techniques to produce transgenic plants. however, the main drawback of stable transformation is the fact that it takes quite a long time to produce a transgenic line. while, transient gene expression is a quick method to produce recombinant proteins in plants.  objective: the main goal of the present study was to eval...

escherichia coli (e. coli) bacteria can damage dna of the gut lining cells and may encourage the development of colon cancer according to recent reports. genetic switches are specific sequence motifs and many of them are drug targets. it is interesting to know motifs and their location in sequences. at the present study, gibbs sampler algorithm was used in order to predict and find functional m...

background and purpose: mycotoxins are secondary fungal metabolites with a very high diversity that are produced by some species of aspergillus which frequently leads to contaminate food and agricultural products. recently, elimination of aflatoxin contamination in food and feed has been considered by scientists worldwide. although, the antibacterial and antifungal effects of vitamins as natura...

Abstract Introduction: Estrogen receptor-positive (ER-positive) breast cancer is a subgroup of breast tumors that is more likely to respond to hormone therapy. ER-positive and ER- negative breast cancers tend to show different patterns of metastasis because of different signaling cascade and genes that are activated by estrogen response. Genetic factors can contribute to high rates of metastas...

Abstract Introduction: Estrogen receptor-positive (ER-positive) breast cancer is a subgroup of breast tumors that is more likely to respond to hormone therapy. ER-positive and ER- negative breast cancers tend to show different patterns of metastasis because of different signaling cascade and genes that are activated by estrogen response. Genetic factors can contribute to high rates of metastas...

Noncoding ribonucleic acids micro-RNA is involved in the regulation of gene expression have major roles in the post-transcriptional level. A micro-RNA alone several causes down regulation of mRNA transcript of the target. Thus, small changes in the expression of a micro RNA may lead to significant changes in gene expression are different. Micro- RNA as key regulators of immune cell lineage diff...