brucellosis, caused by brucella spp., is an important zoonotic disease that causes abortion and infertility in cattle and undulant fever in humans. various studies have examined cell-free native and recombinant proteins as candidate protective antigens in animal models. among brucella immunogenes, antigen based on ribosomal preparation has been widely investigated. in this study, the immunogeni...

vicia sativa l., an annual winter growing leguminous plant, is a valuable source of protein and minerals for cattle. drought is one of the key stress factors that influence plant growth and development. in order to investigate common vetch physiological and molecular responses under normal irrigation (n) and two levels of drought stress [s1= 30% and s2= 10% field capacity (fc)], a greenhouse exp...

the cement gland (cg) is a transient organ, found in most anuran embryos and early larvae and located normally on the front of the head. its sticky secretion allows newly hatched larvae to attach to the egg jelly or to another support later and remain hidden and stationary until feeding starts. our ultrastructural studies showed that prominence structure of the cg in some species exists, but is...

alterations in the expression of micrornas (mirnas) have been proposed to play a role in the pathogenesis of acute lymphoblastic leukemia (all) and chronic lymphocytic leukemia (cll). dicer is one of the main regulators of mirna biogenesis, and deregulation of its expression has been indicated as a possible cause of mirna alterations observed in various cancers. our aim was to analyze the expre...

background: the multifunctional transforming growth factor beta (tgf-β) is a glycoprotein that exists in three isoforms. tgf-β3 expression increases in fetal wound healing and reduces fibronectin and collagen i and iii deposition, and also improves the architecture of the neodermis which is a combination of blood vessels and connective tissue during wound healing. fibroblasts are key cells in t...

background: angiogenesis is an important process in various physiologic and pathologic states. the most significant stimulator of angiogenesis is vascular endothelial growth factor (vegf). in contrast, vasohibin1 acts as an angiogenesis inhibitor which specifically inhibits new vessels formation. the aim of the present study was cloning and expression of vasohibin1 gene in e. coli as well as pu...

objective: aflatoxin is important in the food industry, in animal husbandry and the medical area; there are enormous negative economic impacts due to this toxin. numerous studies have researched extracts and plant compounds with the intent to reduce the growth of aflatoxin-producing organisms, inhibit toxin production and suppress the major toxin encoded genes (i.e., aflr) in these organisms. l...

background & objective: streptococcosis is one of the bacterial infections in fish, especially rainbow trout which infects brain and nervous systems of fish and is caused by s. iniae . estimation of the impact of disease prevalence by s. iniae in fish farming in some countries is reported about 100 million dollars per year. some of the most effective proteins in pathogenicity of these bacteria ...

sporadic alzheimer’s disease (sad) is a multi-factorial disease caused by genetic, epigenetic, environmental and metabolic factors. current understandings of the possible mechanisms of ad such as inflammation and oxidative stresses in the brain have led us to investigation of potential ad therapeutics. currently herbal medicines with fewer side effects comparing to other chemical medicine are i...

background: the interaction between follicular cells and oocyte leads to a change in gene expression involved in oocyte maturation processes. objective: the purpose of this study was to quantify the expression of more common genes involved in follicular growth and oocyte developmental competence. materials and methods: in this experimental study, the expression of genes was evaluated with qrt-p...