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Showing 3 results for Rahimzadeh

Nayereh Khadem , Ahmadshah Farhat, Nayereh Ghomian , Samira IbRahimzadeh,
Volume 7, Issue 4 (Winter 2007)
Abstract

  Background & Objective: Preeclampsia is an unknown disease. It was seen in 3.7% of live births and it is the cause of mothers' death in 18%. In addition to complications for mothers, fetal damage have also been seen. Also we sought to consider predictors of neonatal outcome in women with preeclampsia and normal women.

  Methods: It is a prospective and cross-sectional study that was performed on 127 preeclampsia pregnant women and 254 normal pregnancy. Statistical analysis was performed by software SPSS/Win and was used X2 test for analysis of the results.

  Results: Prevalence of preterm labor was 54.4% in women with preeclampsia and 25% in normal pregnancy. There was no statistical difference such as parity (P=0.157), age (P=0.256) and type of delivery (P= 0.226). There was a significant difference between two groups in gestational age (P<0.0001), birth weight (P<0.0001), neonatal mortality (P=0.013), neonatal Apgar score (P=0.005) and NICU admission (P<0.0001).

  Conclusion: It is clear that the difference between two groups is mainly because of preterm labor in preeclampsia group. Attention to exact control of illness and avoidance of making rash decision for terminating pregnancy in mild preeclampsia can improve outcomes of Neonates.


Sadegh Hazrati , Mansoor Rezazadeh Azari , Hadi Sadeghi , Soheila Rahimzadeh, Naser Mostaed,
Volume 9, Issue 4 (winter 2009)
Abstract

 Background and objectives: Long term exposure to high levels of cement dust is one of the most important environmental risk factors in cement industries that adversely affect employee's respiratory system. Provided that achieving sustainable development mainly relies on healthy workers, this study aimed at assessing cement dust concentration and its free SiO2 content in an Iranian Portland Cement Industry.

 Methods: In a cross - sectional study, airborne dust levels was investigated by collecting 64 personal and 35 environmental samples at both inhalable and respirable dust sizes. Dust concentrations were determined by deploying personal samplers in the breathing zone of workers. SiO2 fractions were also measured in 4 samples collected from different part of the factory.

 Results: Arithmetic average concentrations of inhalable and respirable dust in personal sampling campaign were 58 and 13 mg m-3, respectively. Respective values for inhalable and respirable dust in environmental sampling campaign were 154 and 27 mg m-3. Dust concentrations in 90% of environmental samples and 80% of personal samples exceeded those occupational exposure limit values set for inert dusts i.e. Portland Cement. The average free SiO2 fraction in analyzed samples was 2.86% varying from 2.33% in "packing and loading" area to 3.67 % in "raw mill" section.

  Conclusion: Free SiO2 fraction as well as the concentrations of cement dust in this study is much higher than those of occupational exposure limit proposed by Iranian Technical Committee of Occupational Health.


Maryam Rahimzadeh , Leila Pirdel,
Volume 18, Issue 1 (spring 2018)
Abstract

Background & objectives: Mesenchymal stem cells have been known as hypo-immunogenic and immunosuppressive cells. Exposure of mesenchymal stem cells to interferon γ (IFN-γ) may influence their immunomodulatory properties. In the present study, the expression level of adenosine producing CD39 and CD73 ectonucleotides as an immunosuppressant were evaluated in Wharton’s Jelly- derived Mesenchymal Stem Cells (WJ-MSCs) in the presence and absence of IFN-g.
Methods: In this experimental study, MSCs were isolated, cultured, and propagated from Wharton's jelly obtained from human umbilical cord. The phenotypic characterization of these cells was performed via analysis of their surface markers using flow cytometry. Then, the cultured mesenchymal stem cells were treated with IFN-g. After 24 hours, the expression levels of CD39 and CD73 genes were analyzed using qPCR in control and IFN-g-treated cells.
Results: Flow cytometric analysis of stem cells revealed morphological similarity to fibroblastic cells and expression of CD105 and CD73 markers in these cells. The results of qPCR showed that the expression level of CD39 was significantly increased in IFN-g-treated cells compared to non-treated cells, while there was no significant difference in CD73 expression level between control and IFN-g - treated cells.
Conclusion: The results indicated the possible role of IFN-g in development of the immunoregulatory capacity of mesenchymal stem cells through expression of target genes. However this should be studied precisely.

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مجله دانشگاه علوم پزشکی اردبیل Journal of Ardabil University of Medical Sciences
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