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Showing 9 results for Maleki

Kazem Sakha, Arman Malekian,
Volume 5, Issue 2 (Summer 2005)

 Background & Objectives: Regarding the admitted cases at early infancy in Tabriz Pediatrics Medical Center, this research was carried out to determine the role of Hep.B. vaccination in the incidence of ITP.

 Methods: We studied all patients’ admission files in Tabriz Pediatrics Center from 1993 to 2002. The patients were under 6 months of age and hospitalized with the impression of ITP. There were 25 infants whose ITP was diagnosed upon their clinical findings, blood counts and bone marrow aspiration and confirmed by exclusion of other causes of thrombocytopenia. Hep. B. vaccination has been included in routine immunization in Iran since 1993. In order to compare the incidence rate of ITP before and after 1993, we also sought all ITP patients’ files at the same age group who had been admitted to Tabriz Pediatrics Center during the decade before the beginning of routine Hep.B. vaccination (i.e. 1982 to 1992).

 Results: This study shows a considerable increase in incidence of ITP in infants under 6 months of age between 1993 asnd 2002 compared to the decade before the beginning of Hep.B.vaccination, which is statistically significant (P=0.0029).

 Conclusion: Although there is no facility to measure antibodies in Iran and many other countries, and this is one of the reasons for lack of proof for existence of a relationship between vaccination and ITP incidence, the study of cases in two different periods may strengthen the role of Hep.B. vaccination in the occurrence of ITP at early infancy.

Farzaneh Delgoshaie , Farzaneh Maleki , Mohammad Ramezani , Jamshid Yousefy ,
Volume 7, Issue 2 (Summer 2007)

 Background & Objectives: Resistance Strains of propionibacterium acnes is one of the most growing problems in acne treatment. Azelaic acid, due to the lack of bacterial resistance, could be a useful alternative in topical treatment of acne. The purpose of this study was to investigate the therapeutic effects and side effects of azelaic acid and its comparison with topical clindamycin in the treatment of acne.

 Methods: This randomized clinical trial study was performed on 100 patients with mild acne. The patients were divided in to two groups. One group was treated with azelaic acid 20% cream and the other one was treated with Dalacin 1% gel twice daily for 4 weeks.

 Results: Both drugs Produced significant reduction in inflammatory Lesions (for azelaic acid p=0/000 and for clindamycin p=0/000) and noninflammatory lesions (for azelaic acid P=0/001 for clindamycin p=0/033). Comparing the mean of decrease in inflammatory and noninflammatory lesions, there was not a significant difference between two groups (of Papule and Pustule P=0/864 of comedons P=0/239). So the efficacy of these two drugs was same. In comparing the sideffects, erythem was more common in azelaic acid users significantly (p=0/031) and skin dryness was more Common in clindamycin users significantly (p=0/000).

 Conclusion: Azelaic acid 20% cream as effective as clindamycin gel 1% in the treatment of mild acne.

Farzaneh Maleki , Farzaneh Delgoshaee , Mohammadreza Khakzad , Mohammad Wejdanparast, Behiyeh Zakerian ,
Volume 7, Issue 3 (Autumn 2007)

  Background & Objectives: :Contact Dermatitis (C.D) is a common condition and 5.4% of population are suffering from it. Main treatments are based on emollients and corticosteroids. and in C.D cellular infiltration are mononuclears chiefly T. helper lymphocytes. The aim of this study was to have a new approach to herbals with new science covering and study the efficacy of alcoholic extracts of 4 herbals: henna, camomile cedar and aloevera in experimental C.D on mice.

  Methods: In a pilot experimental study first we chose 70 mice (ENMARY race, 50 ± 10gr weight as case group, then we shaved behind of their left ears (at the days 0 and 1) and rubbed DNCB 400 mg/ml on the skin.At the 10th and 14th day the same amount of DNCB again was rubbed on the left ear. On the right ear the same amount of olive oil in Acetone dissolver was rubbed,as control group. Then at the times of 2, 10, 24, 48, 72, 96, 120, 150 hrs after the 2nd contact, the mice were killed with Ether, cutting the ears from base and prepared pathological sections for study of cellular infiltration. In second stage alcoholic extracts of 4 plants were prepared, then herbal cream with 4% concentration in cold cream as pallish cream were made, with considering the results of first stage that showed the maximal infiltration was at 120 hr after contact, the creams were rubbed every 12hr for 7 days on 40 mice in 4 groups that had been sensitized before with DNCB. 2 groups (20 mice) were considered as control (10 mice received no drugs and 10 mice received cold cream). 60 mice were chosen in the second phase and in general 130 mice were investigated.

  Results: lymphocytic infiltration reduced after 7 days application of drugs for camomile group about 66/7%, cedar 50%, alaevera 12/5% and henna 0%

  Conclusion: Camomile chammazolen, Inositol had the best response (66/7% severe response) on improvement of contact dermatitis (P=0.02)

Masoud Maleki , Kazem Parivar , Mohammad Nabiyouni , Parichehr Yaghmaei , Mohammad Naji ,
Volume 9, Issue 2 (summer 2009)

 Background and Objectives:Stem cells are characterized by the ability to renew themselves through mitotic cell division and differentiating into a diverse range of specific cell types. Wharton's jelly is the appropriate source of mesenchymal stem cells (MSCs) that have high differentiation competence. The aim of this study was differentiation of MSCs to lens fiber cells. In differentiation pathway of lens fiber cells, crystallins are expressed . Thus, crystallins can be used as differentiation marker of lens fiber cells.

  Method: In the current study MSCs were isolated from the mouse umbilical cord. It was minced into 1-2 mm3 fragments and then were incubated with collagenase type IA following pipetting for mechanical isolation of cells. Cell suspension was plated in 25 cm2 culture flasks. Alkaline Phosphatase detection kit was used for staining of undifferentiated UC-MSCs from passage I. In the experimental group MSCs were plated in the maintenance medium supplemented with bovine vitreous body (1:3 v/v) for induction. Protein lysate were prepared from cells on days 10 of induction and were analyzed on polyacrylamide gels and transferred to nitrocellulose membranes. Rat lens extract was used as a positive control. Anti-alpha A, alpha B crystallin, secondary antibody, vectastain ABC- kit (standard) and vector blue alkaline phosphatase substrate kit III were used.

  Results: Mouse umbilical cord MSCs had alkaline phosphatase activity. Morphological studies and separation of proteins in electrophoresis indicated that experimental group cells might probably differentiated into lens fiber cells.

  Conclusion: Mouse umbilical cord could be used as an appropriate source for MSCs. MSCs had fibroblast- like morph and experimental group indicated the presence of fiber-like cells that were long, thin, and parallel aligned. Electrophoresis and Western blot analysis showed there was a detectable expression of early developmental marker of lens fiber cells differentiation in experimental group.

Asadollah Asadi , Arash AbdolMaleki, Farhood Najafi,
Volume 13, Issue 1 (spring 2013)

  Background & Objectives: Polymers as drug carriers are recent advances in drug delivery and led to the new advent field that called polymer treatment. In the present study, the toxic and teratogenic effects of BDP18 were evaluated against chicken embryos as a model.

  Methods: The BDP18 tri-block copolymer (PLA-PEG2000-PLA) was synthesized. The compound solution was injected in triplicate examination, in the air sac of the eggs, at third day of incubation, and survived fraction of the embryos and Morphological and skeletal changes were recorded .

  Results: The survived fraction of the embryos depends on the compound concentration. In concentration of 20 mg/ml , 33.3% of the embryos were survived and the LD50 was 10.87 mg/egg . Morphological study of the treated embryos showed no abnormalities in embryos , and skeletal staining showed the deletion of caudal vertebrate in high concentration.

  Conclusion: The BDP18 copolymer had low toxic and teratogenic effects against the embryos, but it caused the deletion of caudal vertebrate at concentrations above the threshold (10 mg/ml). This polymer can be used as an effective drug -release system in low concentrations .

Saber Zahri, Masoud Maleki, Kamaladdin Hamidi , Seiyeh Mahsa Khatami ,
Volume 13, Issue 1 (spring 2013)

  Background & Objectives: Stem cells are fundamental supporter of multicellular tissue. They allow blood, bone, gametes, epithelia, nervous system, muscle, and other tissues to be replaced by fresh cells throughout life. In recent years human Wharton’s jelly stem cells (WJSCs) have gained attention. They express a number of surface markers characteristic of mesenchymal stem cells. In this study, human Wharton’s jelly stem cells were isolated using explant method. To show the stemness property of these cells, three CD markers including CD105, CD44 and CD34 were tested.

  Methods: The umbilical cord samples were collected by Caesarian section at Arta Hospital in Ardabil. Cords were transferred in sterile conditions and stem cells were isolated using explant method. After log phase, cells were passaged then growth characteristics and CD105, CD44 and CD34 markers investigated by RT-PCR.

  Results: Separation of human Wharton’s jelly stem cells were started after 7 days. WJSCs in culture revealed two distinct cell population named Type 1 and Type 2. RT-PCR results showed that WJSCs were CD105+, CD44+ and CD34-.

  Conclusion: Human umbilical cord stem cells could be an alternative source instead bone marrow stem cells for cell therapy and tissue engineering. These cells have a fibroblastic appearance. Following the lag phase and into log phase respectively, cells grow easily in culture and retain stemness properties in higher passages.

Abbas Yazdanbod, Afshin Hooshyar, Rasool Nemati, Nasrollah Maleki, Gholamreza Hamidkholgh,
Volume 13, Issue 4 (Winter 2013)

  Eosinophilic gastroenteritis is a rare disease characterized by focal or diffuse eosinophilic infiltration of the gastrointestinal system. The clinical presentation is depending on the involved area and its extension into the layers of the gastrointestinal tract. We repor ted a case of eosinophilic gastroenteritis in the setting of cryptogenic cirrhosis which initially appeared as a tumoral obstruction of the 3rd portion of duodenum which is relieved by surgical bypass and two years later presented as eosinophilic ascitis. The patient was treated with corticosteroid with full absorption of ascitis.

Mohammadreza Behvarz , Masoud Maleki , Mohammadreza Mashayekhi ,
Volume 14, Issue 4 (winter 2014)

  Background & objectives: Adult stem cells are undifferentiated cells that replace dead or injured cells. There are adult stem cells in some regions of human tissues and hair follicle is one of the tissues that have adult stem cell source and these cells have an important role in hair life cycle. In this study, we investigated the isolation of hair follicle stem cells (HFSCs) and expression of mesenchymal stem cell markers on the isolated cells.

  Methods : Human hair follicles obtained from men scalp tissue by micro punch technique. Hair follicles isolated and cultured in culture flasks in DMEM-F12 + FBS. After outgrowth of stem cells from hair bulges, they analyzed by flow cytometry for detection of stem cell markers.

  Results: 23 to 27 days after isolation and culture of HFSCs in uncoated cell culture flasks, cell surface markers expression studied by flow cytometry. Flow cytometric analysis showed 25.26% Stro-1, 50.85% CD90, 45.24% CD105, 61.20% CD44, 8.20% CD45, 11.86% CD146, 2.72% CD106, 7.21% CD166 and 26.74% CD19 expression in HFSCs.

  Conclusion: In this study, isolated stem cells significantly expressed some of the mesenchymal stem cell markers higher than other markers. These markers give certain characteristics to HFSCs, and introduce the cells as an alternative option for cell therapy, tissue engineering and regenerative medicine.

Farin Malekifard, Norooz Delirezh, Rahim Hobbenaghi, Hasan Malekinejad,
Volume 18, Issue 2 (summer 2018)

Background & objectives: Several studies have shown that pentoxifylline is an antioxidant and anti-inflammatory agent. Pentoxifylline (PTX), has been shown to exert protective effects on autoimmune disorders. The objective of the present study was to examine the effect of pentoxifylline on histopathology of pancreas in diabetic mice.
Methods: Diabetes was induced by multiple injection of low-dose streptozotocin (40 mg/kg/day for 5 consecutive days) in male C57BL/6 mice. After induction of diabetes, mice were treated with pentoxifylline (100 mg/kg/day i.p.) for 21 days. The nitric oxide levels were evaluated in spleen cell culture supernatant. Pancreases were isolated and stained by hematoxylin & eosin (H&E) and Gomori aldehyde fuchsin (GAF).
Results: Pentoxifylline treatment significantly inhibited the production of nitric oxide (p<0.05). In addition, PTX improved the pancreas tissue. It increased the mean diameter of islets and the number of islets and beta cells. (p<0.05).
Conclusion: These findings indicated that pentoxifylline might have a therapeutic effect against the autoimmune destruction of the pancreatic beta-cells during the development of STZ-induced type 1 diabetes in mice.

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