Showing 3 results for Chorioallantoic Membrane
K Kohestanian, J Baharara, T Ramazani, M Mosavi,
Volume 23, Issue 4 (7-2015)
Abstract
Introduction: Eugenol is a substance obtained from clove that has some therapeutic properties. Angiogenesis involves the formation of new blood vessels from the primary vessels. Since today natural products are taken into consideration in regard with anti-angiogenic therapies, this study intended to investigate anti-angiogenic effects of eugenol on chorioallantoic membrane (CAM) of chick embryo.
Methods: In this experimental study, 70 Ross fertilized eggs were randomly divided into: control, sham and five experimental groups. On the 8th day of incubation, experimental groups were treated with 0.5 -5 mM of eugenol. On the 12th day, all cases were photographed and the numbers and lengths of vessels around the sponges were measured via applying image J software. Furthermore, the hemoglobin content was measured using Drabkin test, and then the embryo weight was recorded. The study data were analyzed statistically via SPSS software utilizing ANOVA test at significance level of p<0.05.
Results: No significant difference was observed in regard with average number and length of vessels in sham and control groups. It is worth mentioning that the average number and length of vessels in experimental groups of 3, 4 and 5 revealed a significant decrease compared to the control group (p<0/001). The hemoglobin content of experimental groups of 2، 3, 4 and 5 demonstrated a significant decrease (p<0/001). Moreover, the weight of the embryos in 3, 4 and 5experimental groups showed a significant decrease compared to the controls (p<0.001).
Conclusion: As the study findings revealed, Eugenol was reported to have inhibitory effect on angiogenesis in the chick embryo, therefore, it may be regarded as a good candidate for studies concerned with cancer treatment and pathological conditions associated with angiogenesis.
Fateme Niazi, Khadije Shahrokh Abadi, Maryam Tehranipour,
Volume 25, Issue 8 (11-2017)
Abstract
Introduction: Angiogenesis is one of the most important biological processes that any disruption of it can cause diseases. The main point of the molecular guidance in this process is the vascular endothelial growth factor (VEGF) that acts through its receptors and is one of the angiogenesis specific regulators. This study aimed to investigate the effect of Ocimumbasilicum aqueous and alcoholic extract on VEGF gene expression changes in chick chorioallantoic membrane.
Methods: In this empirical study, 60 Ross fertilized eggs were randomly divided into 6 groups, including control group, sham-exposed group, and 4 experimental groups. On the second day of incubation, a window was opened on the eggs and on the eighth day 50 and 150 mg/kg of basil aqueous and alcoholic extracts were injected into the chick chorioallantoic membrane (CAM). On the twelfth day, for RNA extraction and VEGF gene expression examination the chorioallantoic membrane was sampled, then cDNA was synthesized and VEGF gene expression changes were studied using quantitative data analysis in all groups.
Results: The results showed that VEGF gene expression- under the influence of aqueous and alcoholic extracts of basil- increased in all experimental groups compared to the sham group, but the rise was more in those groups, which were treated with aqueous extract, in both dosages, than alcoholic extract-treated groups.
Conclusion: Both aqueous and alcoholic extracts of basil increased VEGF gene expression. The study showed an increase in the number and length of vessels. According to the increasing effects, basil aqueous and alcoholic extracts can affect the molecular processes of growth and dependent processes.
Zahra Abasnezhad, Maryam Tehranipour, Saidhe Azafar Balanezhad, Nastaran Amintaheri,
Volume 27, Issue 6 (10-2019)
Abstract
Introduction: Angiogenesis is the formation of new vessels from early vessels that has effected in pathologic condition such as growing tumor, metastases, arthritis rheumatoid, diabetes and physiologic condition such as developmental and growing of organ regeneration, wound healing, and reproduction. Otostegia presica is a member of Laminacea family, has antioxidant and anti-apoptosis properties. The aim of this study was to investigate the effects of hidroalkoholic extract of Otostegia presica on VEGFR expression and angiogenesis in chick chorioallantoic membrane.
Methods: In this research, 60 fertilized Ross eggs were used and randomly were divided into five groups, included: control, sham-exposed, and three experimental groups treated with hidroalkoholic extract of Otostegia presica doses 100,200,400 mg/kg. On 2nd day of incubation, a window was opened for eggs under sterile condition. On 8th day, a gelatin sponge with 1×4×4 diameter was placed on chorioalantoic membrane (CAM) and extract fractions with dose of 100,200,400 mg/kg were added. On 12th day, length and weight of embryos were measured and CAM photos were captured. Then number and length of vessels in special area on CAM were measured with Image J. software. Sampling was performed for assessment of VEGFR expression. Data were analyzed by t-test and ANOVA and p<0.05 was considered significant.
Results: Comparison between mean of length and weight of embryos and number and length of vessels in controls and sham-exposed did not show significant difference (P>0.05). Mean of the number of vessels showed significant increase in all experimental groups (P<0.05). VEGFR expression has increased in experimental groups rather than sham-exposed group.
Conclusion: The results showed that hidroalkoholic extract of Otostegia presica has have angiogenic effects and increased VEGFR expression in all experimental groups