2024-03-28T14:20:31Z
https://ijbms.mums.ac.ir/?_action=export&rf=summon&issue=680
Iranian Journal of Basic Medical Sciences
2008-3866
2008-3866
2015
18
6
Molecular and genetic aspects of odontogenic tumors: a review
Kavita
Garg
Shaleen
Chandra
Vineet
Raj
Wamiq
Fareed
Muhammad
Zafar
Odontogenic tumors contain a heterogeneous collection of lesions that are categorized from hamartomas to benign and malignant neoplasms of inconstant aggressiveness. Odontogenic tumors are usually extraordinary with assessed frequency of short of 0.5 cases/100,000 population for every year. The lesions such as odontogenic tumors are inferred from the components of the tooth-structuring contraption. They are discovered solely inside the maxillary and mandibular bones. This audit speaks to experiences and cooperation of the molecular and genetic variations connected to the development and movement of odontogenic tumors which incorporate oncogenes, tumor-silencer genes, APC gene, retinoblastoma genes, DNA repair genes, onco-viruses, development components, telomerase, cell cycle controllers, apoptosis-related elements, and regulators/controllers of tooth development. The reasonable and better understanding of the molecular components may prompt new ideas for their detection and administrating a better prognosis of odontogenic tumors.
Genes
Odontogenesis
Odontogenic tumors
2015
06
01
529
536
https://ijbms.mums.ac.ir/article_4522_63816810fdc69594e89151b025bea4cb.pdf
Iranian Journal of Basic Medical Sciences
2008-3866
2008-3866
2015
18
6
Resveratrol attenuates visfatin and vaspin genes expression in adipose tissue of rats with type 2 diabetes
Soheila
Asadi
Mohammad Taghi
Goodarzi
Massoud
Saidijam
Jamshid
Karimi
Reza
Yadgar Azari
Azam
Rezaei Farimani
Iraj
Salehi
Objective(s): Visfatin and vaspin are secreted by adipose tissue and play key roles in glucose homeostasis and subsequently are potential targets for diabetes treatment. Resveratrol (RVS) corrects insulin secretion and improves insulin sensitivity. We investigated the RVS effects on serum antioxidants, insulin and glucose levels, also visfatin and vaspin genes expression in adipose tissue of streptozotocin-nicotinamide (STZ-NA) induced type 2 diabetic rats. Materials and Methods: Diabetes was induced in Wistar rats (n=32) using STZ (60 mg/kg body weight) and NA (120 mg/kg body weight); rats were divided into 4 groups (n=8). Eight untreated normal rats were used as control group; four diabetic rat groups (2–5) were treated with 0, 1, 5 and 10 mg /kg body weight of RVS, respectively for 30 days. After treatment blood and adipose tissue were prepared from all animals. Serum glucose, insulin, HOMA index, total antioxidant capacity (TAC), and malondialdehyde (MDA) were measured. Visfatin and vaspin genes expression in adipose tissue were evaluated using real-time PCR. Results: RVS reduced blood glucose significantly and increased insulin level, resulting in insulin sensitivity improvement. Furthermore RVS increased weight and TAC, while reducing serum MDA in the diabetic groups. Visfatin gene expression increased in the diabetic group, and RVS treatment reduced it. Vaspin gene expression was reduced in RVS receiving diabetic groups. Conclusion: The results indicated that RVS has potential hypoglycemic effect, probably by increasing insulin level and changing gene expression of visfatin and vaspin. Moreover RVS showed antioxidant effects through reduction in peroxidiation products and augmented antioxidant capacity.
Grape
Insulin sensitivity
Resveratrol
Vaspin
Visfatin
2015
06
01
537
543
https://ijbms.mums.ac.ir/article_4523_670c2d9ae3e9533a208d09f00c910978.pdf
Iranian Journal of Basic Medical Sciences
2008-3866
2008-3866
2015
18
6
Juglone exerts antitumor effect in ovarian cancer cells
Fang
Fang
Yingxin
Qin
Ling
Qi
Qing
Fang
Liangzhong
Zhao
Shuang
Chen
Qiang
Li
Duo
Zhang
Liguo
Wang
Objective(s): Juglone is isolated from many species of the Juglandaceae family and used as an anti-viral, anti-bacterial, and anti-tumor therapeutic. Here, we evaluated juglone-induced antitumor effect in ovarian cancer SKOV3 cells.
Materials and Methods: MTT assay was performed to examine juglone anti-proliferative effect. Cell cycle and apoptosis were studied using flow cytometry in juglone-treated SKOV3 cells. To investigate molecular mechanism of cell cycle and apoptosis, protein expression levels were measured by Western blot analysis of cyclin D1, Bcl-2, Bax, cytochrome c, caspase-9 and caspase-3. To investigate the motility of juglone-treated SKOV3 cell, Matrigel invasion assay was employed to characterize cell invasion. Also, matrix metalloproteinase-2 (MMP-2) expression levels were detected by western blot.
Results:Juglone significantly inhibited SKOV3 cell proliferation as shown by G0/G1 phase arrest, and this effect was mediated by inactivation of cyclin D1 protein (P<0.05). Juglone induced apoptosis in SKOV3 cell which was accompanied by caspase-9 and caspase-3 activation (P<0.05). Juglone decreased Bcl-2 levels and increased Bax and cytochrome c (Cyt c) levels(P<0.05). Juglone sufficiently inhibited invasion while evidently decreased MMP-2 expression (P<0.05).
Conclusion:The results suggest that juglone could probably induce apoptosis through mitochondrial pathway and restrained cell invasiveness by decreasing MMP expression.
Apoptosis
Cell Cycle Arrest
Invasion
Juglone
Ovarian cancer
2015
06
01
544
548
https://ijbms.mums.ac.ir/article_4525_04a34c08957ce0223d3476f06a5c1240.pdf
Iranian Journal of Basic Medical Sciences
2008-3866
2008-3866
2015
18
6
Effect of selegiline on neural stem cells differentiation: a possible role for neurotrophic factors
Kambiz
Hassanzadeh
Mehrnoush
Nikzaban
Mohammad
Raman Moloudi
Esmael
Izadpanah
Objective(s): The stimulation of neural stem cells (NSCs) differentiation into neurons has attracted great attention in management of neurodegenerative disease and traumatic brain injury. It has been reported that selegiline could enhance the morphologic differentiation of embryonic stem cells. Therefore this study aimed to investigate the effects of selegiline on NSCs differentiation with focus on the role of neurotrophic factor gene expression.
Materials and Methods: The NSCs were isolated from lateral ventricle of C57 mice brain. The cells were exposed to selegiline in nano to micromolar concentrations for 24 hr or 72 hr. In order to assay the effect of selegiline on NSCs differentiation into neurons, astrocytes and oligodendrocytes, immunocytochemical techniques were utilized. Samples were exposed to specific antibodies against neurons (β tubulin), astrocytes (GFAP) and oligodendrocytes (OSP). The expression of BDNF, NGF and NT3 genes was investigated using Real-Time PCR.
Results: Our findings revealed that selegiline increased NSCs differentiation into neurons at 10-7 and 10-8 M and decreased the differentiation into astrocytes at 10-9,while oligodendrocyte did not significantly change in any of the used concentrations. In addition data analyses showed that selegiline increased BDNF, NGF and NT3 gene expression at 24 hr, but did not change them in the other time of exposure (72 hr) except 10-7 M concentration of selegiline, which increased NT3 expression.
Conclusion:Our results indicate selegiline induced the differentiation of NSCs into neurons and in this context the role of neurotrophic factors is important and should be considered.
Neurotrophic factors
NSCs
Selegiline
2015
06
01
549
554
https://ijbms.mums.ac.ir/article_4527_1024b61329edcbb2858a81b596799793.pdf
Iranian Journal of Basic Medical Sciences
2008-3866
2008-3866
2015
18
6
Gardenia jasminoides extracts and gallic acid inhibit lipopolysaccharide-induced inflammation by suppression of JNK2/1 signaling pathways in BV-2 cells
Wen-Hung
Lin
Heng-Hung
Kuo
Li-Hsing
Ho
Ming-Lang
Tseng
An-Ci
Siao
Chang-Tsen
Hung
Kee-Ching
Jeng
Chien-Wei
Hou
Objective(s): Gardenia jasminoides Ellis (GJ, Cape Jasmine Fruit, Zhi Zi) has been traditionally used for the treatment of infectious hepatitis, aphthous ulcer, and trauma; however, the direct evidence is lacking.
Materials and Methods:We investigated the effect of the GJ extract(GJ) and gallic acid (GA) on lipopolysaccharide (LPS) induced inflammation of BV-2 microglial cells and acute liver injury in Sprague-Dawley (SD) rats.
Results:Our results showed that the GJ extract and GA reduced LPS-induced nitric oxide (NO), interleukin (IL)-1, IL-6, reactive oxygen species (ROS), and prostaglandin (PGE2) production in BV-2 cells. The GJ extract and GA significantly decreased serum aspartate aminotransferase (AST) and alanine aminotransferase (ALT) levels in LPS-treated rats. Furthermore, the water extract, but not the ethanol extract, of the GJ dose-dependently inhibited LPS-induced JNK2/1 and slightly p38 mitogen-activated protein kinases (MAPK), and cyclooxygenase-2 (COX-2) expression in BV-2 cells.
Conclusion:Taken together, these results indicate that the protective mechanism of the GJ extract involves an antioxidant effect and inhibition of JNK2/1 MAP kinase and COX-2 expressions in LPS-induced inflammation of BV-2 cells.
BV-2 cell
Gardenia jasminoides
MAPKs
NO
ROS
2015
06
01
555
562
https://ijbms.mums.ac.ir/article_4529_bc4307afb55d704d2c73bb7a5eb5df70.pdf
Iranian Journal of Basic Medical Sciences
2008-3866
2008-3866
2015
18
6
Therapeutic angiogenesis promotes efficacy of human umbilical cord matrix stem cell transplantation in cardiac repair
Kaveh
Moradi
Mehdi
Abbasi
Farid
Aboulhasani
Niloufar
Abbasi
Kehinde
Adebayo Babatunde
Fereydoon
Sargolzaeiaval
Ahmad-Reza
Dehpour
Objective(s):Although previous studies have confirmed the beneficial effects of human umbilical cord matrix stem cell (hUCM) transplantation post myocardial infarction (MI), but this stem cell resource has no potential to induce angiogenesis. In order to achieve the process of angiogenesis and cardiomyocyte regeneration, two required factors for cardiac repair agents were examined namely; hUCM and VEGF on an infarcted heart. The main objective of this research is to investigate the combinatory effect of dhUCM and VEGF transplantation on an infarcted heart. Materials and Methods:45 min of ligating the left anterior descending coronary artery, the MI-induced animals received 50 μl PBS, 5 μg VEGF, 5×106 hUCM cells alone, combined with 5 μg VEGF and 5×106 differentiated hUCM cells alone or combined with 5 μg VEGF through intramyocardial injection. MI group, without hUCM and VEGF served as the control group. Left ventricular function and angiogenesis were also evaluated. Results: After eight weeks post MI, there were significant rise in left ventricular ejection farction in dhUCM+VEGF group compared to the other treated and non-treated groups (P<0.05). Fibrosis tissue was markedly lower in the dhUCM+VEGF and hUCM+VEGF groups compared to the other treated and non-treated groups (P<0.05). Despite these benefits, vascular density in dhUCM+VEGF group was not markedly different compared to VEGF and hUCM+VEGF groups. The transplanted hUCM and dhUCM cells survived and migrated to the infarcted area. Conclusion: Our findings demonstrated that the dhUCM cells transplantation combined with VEGF were more efficient on an infarcted heart.
Angiogenesis
Cardiac repair
Human umbilical
Myocardial
Vascular endothelial-growth factor
2015
06
01
563
570
https://ijbms.mums.ac.ir/article_4530_80815718dc001c2903e95d9e66a2205f.pdf
Iranian Journal of Basic Medical Sciences
2008-3866
2008-3866
2015
18
6
Heterozygosis deficit of polymorphic markers linked to the β-globin gene cluster region in the Iranian population
Tahereh
Moradi
Reihaneh
Vallian
Zahra
Fazeli
Asieh
Haghighatnia
Sadeq
Vallian
Objective(s): Iran is considered as one of the high-prevalence areas for β-thalassemia with a rate of about 10% carrier frequency. Molecular diagnosis of the disease is performed both by direct sequencing and indirectly by the use of polymorphic markers present in the beta globin gene cluster. However, to date there is no reliable information on the application of the markers in the Iranian population. Here we report the results of an extended molecular analysis of five RFLP markers, XmnI, HindIIIA, HindIIIG, RsaI and HinfI, located within the β-globin gene cluster region in four subpopulations of Iran. Materials and Methods:A total of 552 blood samples taken from the Iranian subpopulations including Isfahan, Chaharmahal-O-Bakhtiari, Khuzestan and Hormozgan were genotyped using PCR-RFLP and sequencing. The allele frequency, the expected and observed heterozygosity, and Shannon's information index (I) of these markers were calculated. Results:Distribution of the allele frequencies for XmnI, HindIIIA, HindIIIG, RsaI and HinfI polymorphic markers did not differ significantly among the subpopulations examined. Overall observed heterozygosity ranged from 0.1706 for HindIIIA to 0.4484 for RsaI. The Shannon index was Conclusion:The results suggested that genotyping of these markers is not informative enough once used as single markers for prenatal diagnosis and carrier detection of β-thalassemia in the Iranian population. However, haplotyping of these markers may provide more useful data in linkage analysis and prenatal diagnosis as well as carrier detections for β-thalassemia in Iranians.
β-globin gene cluster region
β-thalassemia
Iranian Population
Polymorphic markers
2015
06
01
571
575
https://ijbms.mums.ac.ir/article_4531_4dc129142d65537b4bf8ac3f7fd4764a.pdf
Iranian Journal of Basic Medical Sciences
2008-3866
2008-3866
2015
18
6
Development of RNA aptamers as molecular probes for HER2+ breast cancer study using cell-SELEX
Seyedeh Alia
Moosavian
Mahmoud Reza
Jaafari
Seyed Mohammad
Taghdisi
Fatemeh
Mosaffa
Ali
Badiee
Khalil
Abnous
Objective(s): Development of molecules that specifically recognize cancer cells is one of the major areas in cancer research. Human epidermal growth factor receptor 2 (HER2) is specifically expressed on the surface of breast cancer cells. HER2 is associated with an aggressive phenotype and poor prognosis. In this study we aimed to isolate RNA aptamers that specifically bind to HER2 overexpressing TUBO cell line. Materials and Methods: Panel of aptamers was selected using cell-based systematic evolution of ligands by exponential enrichment (cell-SELEX). Results: Binding studies showed that selected aptamers can identify TUBO cell line with high affinity and selectivity. Our preliminary investigation of the target of aptamers suggested that aptamers bind with HER2 proteins on the surface of TUBO cells. Conclusion: We believe the selected aptamers could be useful ligands for targeted breast cancer therapy.
Breast Cancer
Cell-SELEX
RNA aptamer
TUBO cell line
2015
06
01
576
586
https://ijbms.mums.ac.ir/article_4532_d81da845f0f1a0770171012312498abf.pdf
Iranian Journal of Basic Medical Sciences
2008-3866
2008-3866
2015
18
6
Effects of treadmill exercise training on cerebellar estrogen and estrogen receptors, serum estrogen, and motor coordination performance of ovariectomized rats
Saidah
Rauf
Sri Kadarsih
Soejono
Ginus
Partadiredja
Objective(s): The present study aims at examining the motor coordination performance, serum and cerebellar estrogen, as well as ERβ levels, of ovariectomized rats (as menopausal model) following regular exercise. Materials and Methods:Ten female Sprague Dawley ratsaged 12 weeks old were randomly divided into two groups; all of which underwent ovariectomy. The first group was treated with regular exercise of moderate intensity, in which the rats were trained to run on a treadmill for 60 min per day for 12 weeks. The second group served as control. Rotarod test was carried out before and after exercise treatment. All rats were euthanized thereafter, and blood and cerebellums of the rats were collected. The serum and cerebellar estrogen as well as cerebellar ERβ levels were measured using ELISA assays. Results: The number of falls in the rotarod task of the exercise group was significantly lower than that of control group. The cerebellar estrogen level of the exercise group was significantly higher than that of control group. Accordingly, there was a significantly negative correlation between the number of falls and cerebellar estrogen level in the exercise group. Conclusion:The present study shows that a lengthy period of regular exercise improves the cerebellar estrogen level and motor coordination performance in ovariectomized rats.
Cerebellum
Estrogen
Menopause Ovariectomy
Rotarod
Training
2015
06
01
587
592
https://ijbms.mums.ac.ir/article_4533_d647870a24fdda2ba000ad54f05d7e2f.pdf
Iranian Journal of Basic Medical Sciences
2008-3866
2008-3866
2015
18
6
Association study of four polymorphisms in the interleukin-7 receptor alpha gene with multiple sclerosis in Eastern Iran
Mehrdad
Sadeghi Haj
Abbas
Nikravesh
Majid
Pahlevan Kakhki
Nahid
Rakhshi
Objective(s): Multiple sclerosis (MS) is an autoimmune demyelinating disease of the central nervous system (CNS) with unknown etiology. Various genetics and environmental factors contribute to the pathogenesis of the disease. The interleukin-7 receptor alpha chain (IL-7Ra) was identified as the first non-major histocompatibility complex (non-MHC) MS susceptibility locus. In this study we are trying to find the association of IL-7Ragene polymorphisms with MS susceptibility in Eastern Iran. Materials and Methods:A case-control study was performed in two provinces Sistan & Baluchistan and Khorasan with 219 patients and 258 unrelated matched healthy controls, using PCR-RFLP method for four single nucleotide polymorphisms (SNPs) rs7718919, rs11567685, rs11567686 and rs6897932 of IL-7Ra gene. Results:We found a tendency toward association with genotyping analyses in SNP rs7718919 (P=0.048, OR=4.344, and 95% CI=0.892-21.146); also genotype and allele frequency in gender and MS subtype stratification were shown to have significant association with MS. Analysis of two provinces separately showed a significant difference in results of the allele and genotype frequencies. Moreover, haplotyping analysis showed that (GTGC) has an association only in the male secondary-progressive multiple sclerosis (SPMS) patients in comparison to the healthy controls (P=0.043, OR=0.413, and 95% CI=0.179–0.955). Conclusion:IL7-Ra could be a susceptible gene to MS within the Eastern Iran population especially after MS and gender stratification.
Association study
Haplotype
Interleukin-7 receptor alpha Multiple sclerosis
SNPs
2015
06
01
593
598
https://ijbms.mums.ac.ir/article_4536_033e42d137326e2f4f94c69a4c578d0a.pdf
Iranian Journal of Basic Medical Sciences
2008-3866
2008-3866
2015
18
6
Inhibition of janus kinase 2 by compound AG490 suppresses the proliferation of MDA-MB-231 cells via up-regulating SARI (suppressor of AP-1, regulated by IFN)
Yan-xia
Zhang
Li
Yan
Guang-yu
Liu
Wen-jun
Chen
Wei-hong
Gong
Jin-ming
Yu
Objective(s): The Janus kinase-signal transducers and activators of transcription signaling pathway (JAK/STAT pathway) play an important role in proliferation of breast cancer cells. Previous data showed that inhibition of STAT3 suppresses the growth of breast cancer cells, but the associated mechanisms are not well understood. This study aims to investigate the effect and associated mechanisms of JAK/STAT pathway inhibitor AG490 on proliferation and suppression of breast cancer cells. Materials and Methods: CCK-8 assay and trypan blue exclusion assay were used to investigate the cytotoxicity of AG490 to MDA-MB-231 cells. Real-time PCR was used to detect the mRNA level of SARI (suppressor of AP-1, regulated by IFN). Western blot was used to analyze the protein levels of SARI, phospho-STAT3 and total STAT3. Luciferase reporter assay was adopted to explore the mechanism of SARI mRNA upregulation. Results: AG490 suppressed the proliferation of MDA-MB-231 cells in a dose-dependent manner. AG490 significantly up-regulated the mRNA and protein levels of SARI in MDA-MB-231 cells. Knockdown of SARI obviously attenuated AG490-induced growth suppression effect in MDA-MB-231 cells. Furthermore, AG490 dramatically enhanced the transcription activity of SARI promoter. But the transcription activity of truncated SARI promoter, which does not contain STAT3 binding site, cannot be activated by AG490 treatment. Conclusion: We demonstrate in this study that AG490 suppresses the proliferation of MDA-MB-231 cells through transcriptional activation of SARI.
AG490
MDA-MB-231
Proliferation
SARI
STAT3
2015
06
01
599
603
https://ijbms.mums.ac.ir/article_4538_c5da55d104173101fe17c446f941584f.pdf
Iranian Journal of Basic Medical Sciences
2008-3866
2008-3866
2015
18
6
The preventive effects of dexmedetomidine against intestinal ischemia-reperfusion injury in Wistar rats
Xue-kang
Zhang
Xiao-ping
Zhou
Qin
Zhang
Feng
Zhu
Objective(s): Intestinal ischemia-reperfusion is a major problem, which may lead to multiorgan failure and death. The aim of this study was to evaluate the protective effects of dexmedetomidine on cell proliferation, antioxidant system, cell death, and structural integrity in intestinal injury induced by ischemia-reperfusion in rats. Materials and Methods: Animals were randomized into three groups: group A, sham-operated or control; group B, intestinal ischemia/reperfusion (IR); and group C, intestinal IR pretreated with 50 μg of dexmedetomidine. Intestine tissue was collected from all rats 30 min after desufflation, and fresh frozen for histological and biochemical evaluation. Results: The intestinal tissue of group B rats showed a significant decrease in the antioxidant enzyme activities. However, these enzyme activities were improved by the administration of dexmedetomidine. Inhibiting the protein expression of MCP7, PAR2, P-JAK, P-STAT1, and P-STAT3 proved the protective effect of dexmedetomidine. The immunohistochemical staining revealed its protective effect by maintaining the normal structural integrity, less caspase-3 immuno reactivity, and increased cell proliferation count in the intestinal tissues. Conclusions: Intraperitoneal injection of dexmedetomidine significantly protected intestine IR injury in rats by inhibiting the inflammatory response, intestinal epithelial apoptosis, and maintaining structural integrity of intestinal cells.
Dexmedetomidine Inflammatory–response
Intestinal injury
Ischemia-reperfusion
2015
06
01
604
609
https://ijbms.mums.ac.ir/article_4539_a420273f729430dba3cfa80aee4a05c0.pdf
Iranian Journal of Basic Medical Sciences
2008-3866
2008-3866
2015
18
6
Receptor for advanced glycation end products involved in circulating endothelial cells release from human coronary endothelial cells induced by C-reactive protein
Shulai
Zhou
Lichao
Gao
Fangqi
Gong
Xiaoyang
Chen
Objective(s): This study was designed to investigate the effect of receptor for advanced glycation end products (RAGE), S100A12 and C-reactive protein (CRP) on the release of circulating endothelial cells (CECs) from human coronary artery endothelial cells (HCAECs).
Materials and Methods: HCAECs were cultured in increasing concentration of CRP (0, 12.5, 25, 50μg/ml) or S100A12 protein (0, 4, 10, 25μg/ml) for 24 hr. CECs were measured by flow cytometry. Small interfering RNA (siRNA) was designed to decrease RAGE level. Fluorescence microscopy and real-time quantitative polymerase chain reaction were used to assess the efficiency of siRNA silencing RAGE. The release of CECs from HCAECs was further evaluated by flow cytometry.
Results: CRP caused a significant increase in the release of CECs from HCAECs. The number of CECs increased by about 2-fold in 25 μg/ml CRP-treated group compared to the control group (12.22% compared to 6.82%, P=0.032). But S100A12 failed to increase the release of CECs from HCAECs. Blockade of RAGE by siRNA significantly decreased the release of CECs induced by CRP (13.22% of CRP group compared to 8.77% of CRP+siRNA group, P=0.017).
Conclusion:RAGE is involved in the release of CECs induced by CRP, and the effect can be attenuated by silencing RAGE. RAGE may play an important role in endothelial dysfunction in cardiovascular disease. Inhibition of RAGE may be a therapeutic target for coronary artery lesions in Kawasaki disease.
CECs
CRP
HCAECs
RAGE
S100A12
2015
06
01
610
615
https://ijbms.mums.ac.ir/article_4541_762e9ac1877f7d71d4e627b441719268.pdf
Iranian Journal of Basic Medical Sciences
2008-3866
2008-3866
2015
18
6
Evaluation of cutaneous wound healing activity of Malva sylvestris aqueous extract in BALB/c mice
Mohammad
Afshar
Behdad
Ravarian
Mahmoud
Zardast
Seyed Adel
Moallem
Mohammad
Hasanpour Fard
Masoomeh
Valavi
Objective(s): The aim of this study was to evaluate the effects of Malva sylvestris aqueous extract on cutaneous wound healing in BALB/c mice. Materials and Methods: Twenty seven male BALB/c mice (2.5 months of age) were used. A cut wound (superficial fascia depth) was made locally. The mice were then divided into three groups: the first, second and third groups received topical administration of M. sylvestris 1% aqueous extract, silver sulfadiazine topical cream or cold cream (positive and negative control groups), respectively. On days 4, 7 and 10 excisional biopsies were performed and wound healing was evaluated histopathologically. The data were analyzed by the ANOVA and Tukey statistical tests. Results: On days 4 and 7, the numbers of inflammatory cells in the silver sulfadiazine and M. sylvestris-treated groups were significantly lower than the control group and keratinization at the edges of the wound in both groups was significantly higher than the control group. On the tenth day of the study, the Malva-treated mice showed better healing features and less fibrosis and scar formation, and also fewer hair follicles were damaged in this group. On the tenth day of the study, the numbers of inflammatory cells in M. sylvestris and silver sulfadiazine-treated groups were significantly lower than the control group. Conclusion: The present study supports the beneficial effects of M. sylvestris on the wound healing process and suggests a potential clinical application.
Malva sylvestris
Mice
Skin
Wound healing
2015
06
01
616
622
https://ijbms.mums.ac.ir/article_4542_08ba3a43575e03b6a4b728c5b4d929ca.pdf
Iranian Journal of Basic Medical Sciences
2008-3866
2008-3866
2015
18
6
Association between mutations in gyrA and parC genes of Acinetobacter baumannii clinical isolates and ciprofloxacin resistance
Abdollah
Ardebili
Abdolaziz
Rastegar Lari
Maryam
Beheshti
Elnaz
Rastegar Lari
Objective(s): We investigated the contribution of gyrA and parC mutational mechanism in decreased ciprofloxacin susceptibility of Acinetobacter baumannii isolated from burn wound infections.
Materials and Methods: Ciprofloxacin susceptibility of 50 A. baumannii isolates was evaluated by disk diffusion and agar dilution methods. PCR and sequencing were performed for detection of mutation in gyrA and parC genes.
Results: The 44 and 4 isolates of A. baumannii exhibited full and intermediate-resistant to ciprofloxacin, respectively. Overall, the 42 isolates with double mutations of gyrA and parC genes showed a higher level of ciprofloxacin resistance than the 3 isolates with single mutations of gyrA or parC.
Conclusion: Simultaneous mutations in gyrA and parC genes are expected to play a major role in high-level fluoroquinolone resistance in A. baumannii; albeit a single mutation in DNA topoisomerase IV could occasionally be associated with intermediate-resistance to these antimicrobials.
Acinetobacter baumannii
Burn
Ciprofloxacin resistance
gyrA
parC
2015
06
01
623
626
https://ijbms.mums.ac.ir/article_4543_c18731cedf898e076c7b5be1471c6fa9.pdf