1. dept. of biology, science and research branch, islamic azad university, tehran, iran 2. national science foundation (insf), tehran, iran 3. dept. of genetics, tehran medical sciences branch, islamic azad university, tehran, iran                                   corresponding author: mrhrdad hashemi, phd; associate professor of molecular genetics tel: (+98) 2122006664 email: mhashemi@iautmu....

background: hypospadias is one of the most common congenital abnormalities in the male which is characterized by altered development of urethra, foreskin and ventral surface of the penis. androgen receptor gene plays a critical role in the development of the male genital system by mediating the androgens effects. objective: in present study, we looked for new variations in androgen receptor pro...

the aim of this study was to use site directed mutagenesis technique to construct a vector in which serine363 and serine375 residues of the cooh-terminal portion of the μ-opioid receptor (mor) were substituted by alanine. these constructs are essential in studying g-protein coupled receptor kinase-mediated mor desensiti-zation. the nested pcr carried out for conversion of serine363 and serine37...

In the present study, interactions of dopamine receptor agonists and antagonists with water swimming stress (WSS) on naloxone-induced jumping in morphine-dependent mice were examined. Mice were rendered dependent as described in the methods section. The opioid receptor antagonist, naloxone (1 mg/kg), was injected to elicit jumping (as a withdrawal sign). The first group exposed to WSS in the pr...

background: to evaluate vdr gene variation and its interaction with immune regulatory molecules in osteoporosis. methods: totally 205 pre and postmenopausal women were recruited in the study. after an overnight fast, peripheral blood was taken and centrifuged to sprat serum for measurement of serum parathyroid hormone, 25 hydroxyvitamin d, osteocal­cin and cross laps. the fok i polymorphism in ...

background: the present study was undertaken to investigate the correlation of epidermal growth factor receptor (egfr) expression with grade of transitional cell carcinoma (tcc). methods: tumor samples of 75 patients from mostafa khomaini hospital with transitional cell carcinoma of the bladder were analyzed by immunohistochemistry for expression of egfr. in this context, we assigned the bladde...

the snp (rs11209026, arg381gln, r381q) in the il-23 receptor (il23r) confers protection against multiple inflammatory diseases, representing one of the most significant human genetic polymorphisms in inflammatory diseases. we, therefore, investigated the association between il-23 r r381q gene polymorphism and asthma.this case-control study was performed on 209 patients, and 200 healthy controls...

objective(s):painful diabetic neuropathy is associated with hyperexcitability and hyperactivity of spinal cord neurons. however, its underlying pathophysiological mechanisms have not been fully clarified. induction of excitatory/inhibitory neurotransmission imbalance at the spinal cord seems to account for the abnormal neuronal activity in diabetes. protective properties of neurosteroids have b...

background: vasopressin type 2 receptor (v2r) plays an important role in the water reabsorption in the kidney collecting ducts. v2r is a g protein coupled receptor (gpcr) and the triplet of amino acids aspartate-arginine-histidine (drh) in this receptor might significantly influence its activity similar to other gpcr. however, the role of this motif has not been fully confirmed. therefore, the ...

the µ (mu) opioid receptors, which mediate the effects of morphine, are widely distributed in brain. the purpose of this study was to design a simple expression system for rat µ-receptor in escherichia coli (bl21). in this laboratory study, rat µ-receptor cdna was isolated from pcdna3 vector using xba1 and hind3 restriction enzymes. pet-15b was digested by nco1 restriction enzyme. µ-receptor cd...