background: zinc (zn) as an important trace element is essential for testicular development and spermatogenesis. molecular mechanism of zn action in the reproductive system may be related to metal binding low-molecular weight proteins, metallothioneins (mt). our objective was to determine the effect of zn on two important isoforms of mt, mt1m and mt1g genes expression on testicular sertoli cell...

objective(s):  apoptosis is a tightly regulated process and plays a crucial role in autoimmune diseases. because abnormalities in apoptosis are considered to be involved in the pathogenesis of systemic lupus erythematosus (sle), in present study we studied the apoptosis in t lymphocytes from iranian sle patientsat protein and gene expression levels for some molecules which are involved in apopt...

extracellular ca 2+ concentration ([ca2+]o) may be one of the factors affecting atrial natriuretic factor (anf) release. in the previous studies, there are opposite reports about the effect of [ca2+]o on anf secretion. therefore, the effect of [ca2+]o depletion on anf secretion and gene expression was studied in the present research. isolated right atria from rats were perfused for 6 and 2 hour...

The biotrophic pathogen Xanthomonas oryzae pv. oryzae (Xoo) produces a sulfated peptide named RaxX, which shares similarity to peptides in the PSY (plant peptide containing sulfated tyrosine) family. We hypothesize that RaxX mimics the growth-stimulating activity of PSY peptides. Root length was measured in Arabidopsis and rice treated with synthetic RaxX peptides. We also used comparative geno...

MOTIVATION Previous researches showed that phytoene synthase (Psy) from Dunaliella bardawil is the first regulatory point in carotenogenesis. We hypothesize certain interactions between the environmental stress factors and the regulatory sequences of Psy in D.bardawil (DbPsy). Consequently, LA PCR-based genomic walking approach was performed for isolation of psy promoter and terminator, respect...

Studies were conducted to determine whether pectin (PE) or psyllium (PSY) could reverse the high plasma cholesterol and triacylglycerol (TAG) concentrations induced by high fat (HF) or high sucrose (HS) diets and which are the mechanisms involved. Male guinea pigs were fed either a low fat (LF) or a HF diet with 80% of the carbohydrate energy derived from sucrose. Cellulose was used as control....

background: adhesion and biofilm formation are two important steps in candida pathogenesis. the aim of the current study was to investigate the presence of bcr1 gene in candida albicans (c. albicans) isolates from women with vaginal candidiasis and its impact on biofilm formation. methods: we used 50 clinical isolates which confirmed c. albicans by pcr-rflp. then total rna was extracted from c....

background: recombinant monoclonal antibodies have been marketed in last three decades as the major therapeutic proteins against different cancers. however choosing a proper medium and supplements to reach the high expression is a challenging step. despite of commercial serum free and chemically defined media, there are still numerous researches seeking the optimum media to gain higher expressi...

introduction: regulators of g-protein signaling protein negatively control g protein -coupled receptor signaling duration by accelerating gα subunit guanosine triphosphate hydrolysis. since regulator of g-protein signaling4 has an important role in modulating morphine effects at the cellular level and the exact mechanism(s) of adrenalectomy-induced morphine sensitization have not been fully cla...

for a long time, scientists have tried to describe disorders just by genetic or environmental factors. however, the role of epigenetics in human diseases has been considered from a half of century ago. in the last decade, this subject has attracted many interests, especially in complicated disorders such as behavior plasticity, memory, cancer, autoimmune disease, and addiction as well as neurod...