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Nabavi M.,Tehran University of Medical Sciences | Ghorbani R.,Semnan University of Medical Sciences | Massod Asadi A.,Semnan University of Medical Sciences | Faranoush M.,Iranian Blood Transfusion Organization
Asian Pacific Journal of Allergy and Immunology | Year: 2013

Background: The cord blood IgE level is thought to be a predictor of allergic disorders in childhood. It is not well understood how this marker is influenced by the fetal environment, such as maternal, paternal, placenta, and fetal characteristics. Objective: We aimed to investigate the association between cord blood IgE levels and various genetic and environmental factors. Methods: This was a cross-sectional study including a total of 181 neonates and their mothers. A questionnaire asking about demographic data, delivery characteristics, maternal past medical history and information on exposure to known environmental allergens was distributed to pregnant women. Blood samples from them and neonatal cord blood samples were taken at the same time for IgE assay. Results: By univariate analysis we found an association between cord blood IgE levels and higher number of previous pregnancies, delivery season, type of delivery, history of allergy during pregnancy, but not the type of allergic disease and history of allergic disease before pregnancy, were associated with elevated cord blood IgE levels. The maternal blood level of IgE was correlated with its level in cord blood. By multivariate analysis, the number of previous pregnancies, the type and season of delivery and a history of allergy during pregnancy and maternal age and blood IgE levels were variables which had a significant association with cord blood IgE levels. Conclusion: Among the evaluated factors, the presence of any kind of allergic disorder in the mother or her family and elevated maternal blood IgE level are associated with the cord blood IgE of the child. Maternal age and smoking, neonatal gender, type of delivery, season of birth and parity are probable predictors. Source

Zardini H.Z.,Shahid Sadoughi University of Medical Sciences and Health Services | Zardini H.Z.,Islamic Azad University at Yazd | Davarpanah M.,Ferdowsi University of Mashhad | Shanbedi M.,Ferdowsi University of Mashhad | And 3 more authors.
Journal of Biomedical Materials Research - Part A | Year: 2014

In the present study, antimicrobial activities of multiwalled carbon nanotubes (MWCNTs) functionalized with ethanolamine (EA) groups were investigated. Therefore, MWCNT were first functionalized with mono-, di-, and triethanolamine (MEA, DEA, and TEA) under microwave technique. Development of functional groups on the MWCNT surface was confirmed by Fourier transform infrared and thermogravimetric analysis. Morphological variation was investigated by transmission electron microscopy. Then, antimicrobial activities of pristine and functionalized MWCNT (MWCNT-MEA, -DEA, and -TEA) were tested against different bacteria species. The studies have been done on four Gram-negative bacteria (Escherichia coli, Klebsiella pneumonia, Pseudomonas aeroginosa, and Salmonella typhimurium) as well as four Gram-positive bacteria (Bacillus subtilis, Staphylococcus aureus, Bacillus cereus, and Streptococcus pneumonia). The results based on minimal inhibitory concentration and radial diffusion assay were shown that the antimicrobial activity of MWCNT-TEA > MWCNT-DEA > MWCNT-MEA > pristine MWCNT. Based on the results, it seems that EA groups could play an important role in antimicrobial activity of MWCNT. © 2013 Society of Plastics Engineers. Source

Zare-Zardini H.,Islamic Azad University at Yazd | Zare-Zardini H.,Shahid Sadoughi University of Medical Sciences and Health Services | Tolueinia B.,University of Sistan and Baluchestan | Hashemi A.,Shahid Sadoughi University of Medical Sciences and Health Services | And 2 more authors.
American Journal of Alzheimer's Disease and other Dementias | Year: 2013

Antioxidant agents and cholinesterase inhibitors are the foremost drugs for the treatment of Alzheimer's disease (AD). In this study, a new peptide from Ziziphus jujuba fruits was investigated for its inhibitory activity against acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) enzymes as well as antioxidant activity. This peptide was introduced as a new peptide and named Snakin-Z. The Snakin-Z displayed considerable cholinesterase inhibition against AChE and BChE. The half maximal inhibitory concentration (IC50) values of Snakin-Z against AChE and BChE are 0.58 ± 0.08 and 0.72 ± 0.085 mg/mL, respectively. This peptide has 80% enzyme inhibitory activity on AChE and BChE at 1.5 mg/mL. The Snakin-Z also had the high antioxidant activity (IC50 = 0.75 ± 0.09 mg/mL). Thus, it is suggested that Snakin-Z may be beneficial in the treatment of AD. However, more detailed researches are still required as in vivo testing its anticholinesterase and antioxidant activities. © The Author(s) 2013. Source

Sharifi M.J.,Iranian Blood Transfusion Organization | Sharifi M.J.,Tehran University of Medical Sciences | Bahoush G.,Tehran University of Medical Sciences | Zaker F.,Tehran University of Medical Sciences | And 4 more authors.
Pediatric Hematology and Oncology | Year: 2014

Acute lymphoblastic leukemia patients after being treated with methotrexate, have differences in methotrexate serum levels and toxic side effects. One of the main determinants of these toxic side effects is the host pharmacogenetics. The aim of this study was to evaluate the association of -24CT, 1249GA, and 3972CT ABCC2 gene polymorphisms with serum levels, and toxic side effects of methotrexate in childhood acute lymphoblastic leukemia. Applying polymerase chain reaction and restriction fragment length polymorphism techniques, the prevalence of -24CT, 1249GA, and 3972CT ABCC2 gene polymorphisms was evaluated in 65 acute lymphoblastic leukemia patients. The relationship between polymorphisms and methotrexate serum levels and toxicities was studied. A reverse significant relationship was detected between 3972T allele carriers and hepatotoxicity (P = 0.01, OR = 0.25, 95% CI = 0.09-0.72). Also, 1249A allele carriers had increased rate of gastrointestinal toxicity (P = 0.05, OR = 3.47, 95% CI = 1.04-11.57). No significant relationship was detected between -24CT polymorphism and methotrexate toxic side effects. There was no significant relationship between these three polymorphisms and methotrexate serum levels. Genotyping for 3972CT and 1249GA ABCC2 gene variants maybe useful in acute lymphoblastic leukemia to optimize methotrexate therapy and reducing the associated toxicity. Copyright © Informa Healthcare USA, Inc. Source

Nourinia R.,Shahid Beheshti University of Medical Sciences | Soheili Z.-S.,Iran National Institute of Genetic Engineering and Biotechnology | Ahmadieh H.,Shahid Beheshti University of Medical Sciences | Akrami H.,Razi University | And 2 more authors.
Journal of Ophthalmic and Vision Research | Year: 2013

Purpose: To evaluate the effect of placental growth factor (PlGF) gene knockdown in a murine model of laser-induced choroidal neovascularization. Methods: Choroidal neovascularization was induced in the left eyes of 11 mice by infrared laser. Small interfering RNA (siRNA, 20 picomoles/10 μl) corresponding to PlGF mRNA was administered intravitreally by Hamilton syringe in all subjects. One month later, fluorescein angiography and histolologic examination were performed. Results: No leakage was apparent in the 11 eyes treated with siRNA cognate to PlGF. The results of histological evaluation were consistent with angiographic findings showing absence of choroidal neovascularization. Conclusion: Knockdown of the PlGF gene can inhibit the growth of laser-induced choroidal neovascularization in mice. Source

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