scholarly journals Study of antiangiogenic activity of “aqueous extract of Nigella sativa seeds” in chick chorioallantoic membrane (CAM) model

2018 ◽  
Vol 5 (4) ◽  
pp. 895
Author(s):  
Karunakar Kota ◽  
Sandhya Sharma ◽  
P. Ragavendhra
Keyword(s):  
Aqueous Extract ◽  
Nigella Sativa ◽  
Chorioallantoic Membrane ◽  
Dependent Manner ◽  
Antiangiogenic Effect ◽  
Antiangiogenic Activity ◽  
Chick Chorioallantoic Membrane ◽  
Chick Embryo Chorioallantoic Membrane ◽  
Vessel Growth

Background: Angiogenesis is important for the typical physiological activities such as cure from injury, menstrual cycle and embryo growth. It is also plays a crucial role in several pathological conditions in cancer. Antiangiogenesis, e.g., inhibition of blood vessel growth, is being investigated as a way to prevent the growth of tumors and other angiogenesis-dependent diseases. The chick embryo chorioallantoic membrane (CAM) is commonly used as an experimental in vivo assay to study both angiogenesis and antiangiogenesis in response to tissues, cells or soluble factors. Given the high occurrence of cancer worldwide and the major source of the discovery of new lead molecules are medicinal plants. The objective of the present research was to study the antiangiogenic property of “aqueous extract of Nigella sativa seeds” using chick chorioallantoic membrane (CAM) assayMethods: The chick chorioallantoic membrane (CAM) assay for screening the effect of Nigella sativa on anti-angiogenesis was performed according to the method given by Ribatti and co-workers.Results: The results of present study significantly increased the antiangiogenic effect on CAM by decreasing the proliferation of capillary networks in a dose (50 to 300 µg/egg) dependent manner which is probably related to the inhibition of neovascularization.Conclusions: It is concluded that aqueous extract of N. sativa seeds possesses significant antiangiogenic activity, and this is a possible rationale for its folkloric use as an anticancer agent.

Antiangiogenic Iridoids from Stachys ocymastrum and Premna resinosa

Planta Medica ◽  
2019 ◽  
Vol 85 (11/12) ◽  
pp. 1034-1039 ◽  
Author(s):  
Anna Maria Iannuzzi ◽  
César Muñoz Camero ◽  
Massimiliano DʼAmbola ◽  
Valeria DʼAngelo ◽  
Smain Amira ◽  
...  
Keyword(s):  
Chorioallantoic Membrane ◽  
Zebrafish Embryos ◽  
Iridoid Glucoside ◽  
Leaf Extracts ◽  
In Vivo Models ◽  
Antiangiogenic Activity ◽  
Chick Chorioallantoic Membrane ◽  
Vessel Growth

AbstractIn this paper, the isolation of one new iridoid glucoside, 6β-acetoxyipolamiide (1), and thirteen (2 – 14) known congeners from two Lamiaceae species, Stachys ocymastrum and Premna resinosa, leaf extracts is reported. The structural determination of the isolated compounds was performed by mono- and bidimensional NMR spectroscopic analysis as well as MS experiments. The isolates were assayed for their antiangiogenic activity by two in vivo models, zebrafish embryos and chick chorioallantoic membrane assays. The compounds with a significant antiangiogenic activity in both assays were β-hydroxyipolamiide (2), ipolamiide (3), and buddlejoside A5 (8). 6-O-α-l-(3″-O-p-Methoxycinnamoyl-4″-O-acetyl)rhamnopyranosyl catalpol (13) and 6-O-α-l-(2″-trans-caffeoyl)rhamnopyranosyl catalpol (6) showed the best antiangiogenic response on blood vessel growth in zebrafish embryos, whereas saccatoside (10) and 6-O-α-l-(2″-O - p-methoxycinnamoyl-3″-O-acetyl)rhamnopyranosyl catalpol (14) resulted in a strong reduction of capillary formation in the chorioallantoic membrane assay.

scholarly journals Functional involvement of carbonic anhydrase in calcium transport of the chick chorioallantoic membrane

1978 ◽  
Vol 176 (1) ◽  
pp. 67-74 ◽  
Author(s):  
R S Tuan ◽  
J Zrike
Keyword(s):  
Carbonic Anhydrase ◽  
Chorioallantoic Membrane ◽  
Carbonic Anhydrase Activity ◽  
Calcium Deposition ◽  
Dependent Manner ◽  
Transport Activity ◽  
In Ovo ◽  
Chick Chorioallantoic Membrane ◽  
Age Dependent

Carbonic anhydrase activity was demonstrated in the chick-embryonic chorioallantoic membrane and was correlated with the Ca2+-transport activity of the membrane. It is inhibited by sulphonamides and is expressed in the chorioallantoic membrane in an age-dependent fashion during embryonic development. Ca2+ uptake by the chorioallantoic membrane in vivo also increases in a similar age-dependent manner. The temporal increase in these activities is coincident with calcium deposition in the embryonic skeleton. Incubation of the chorioallantoic membrane in ovo with sulphonamides specifically inhibits both the carbonic anhydrase and the Ca2+ uptake activities of the membrane in vivo. Enzyme histochemistry revealed the carbonic anhydrase activity is localized in the Ca2+-transporting ectodermal cells of the chorioallantoic membrane. These results, taken together, indicate that carbonic anhydrase may be functionally important in the Ca2+-transport activity of the chorioallantoic membrane.

scholarly journals N6-Methyladenosine Methyltransferase METTL3 Promotes Angiogenesis and Atherosclerosis by Upregulating the JAK2/STAT3 Pathway via m6A Reader IGF2BP1

2021 ◽  
Vol 9 ◽  
Author(s):  
Guo Dong ◽  
Jiangbo Yu ◽  
Gaojun Shan ◽  
Lide Su ◽  
Nannan Yu ◽  
...  
Keyword(s):  
Molecular Mechanisms ◽  
Chorioallantoic Membrane ◽  
Tube Formation ◽  
Luciferase Reporter ◽  
Dependent Manner ◽  
Stat3 Pathway ◽  
Protein Levels ◽  
Chick Chorioallantoic Membrane

Atherosclerosis (AS) is a life-threatening vascular disease. RNA N6-methyladenosine (m6A) modification level is dysregulated in multiple pathophysiologic processes including AS. In this text, the roles and molecular mechanisms of m6A writer METTL3 in AS progression were explored in vitro and in vivo. In the present study, cell proliferative, migratory, and tube formation capacities were assessed through CCK-8, Transwell migration, and tube formation assays, respectively. RNA m6A level was examined through a commercial kit. RNA and protein levels of genes were measured through RT-qPCR and western blot assays, respectively. VEGF secretion level was tested through ELISA assay. JAK2 mRNA stability was detected through actinomycin D assay. The relationship of METTL3, IGF2BP1, and JAK2 was investigated through bioinformatics analysis, MeRIP, RIP, RNA pull-down, and luciferase reporter assays. An AS mouse model was established to examine the effect of METTL3 knockdown on AS development in vivo. The angiogenetic activity was examined through chick chorioallantoic membrane assay in vivo. The results showed that METTL3 was highly expressed in ox-LDL-induced dysregulated HUVECs. METTL3 knockdown inhibited cell proliferation, migration, tube formation, and VEGF expression/secretion in ox-LDL-treated HUVECs, hampered AS process in vivo, and prevented in vivo angiogenesis of developing embryos. METTL3 positively regulated JAK2 expression and JAK2/STAT3 pathway in an m6A dependent manner in HUVECs. IGF2BP1 positively regulated JAK2 expression through directly binding to an m6A site within JAK2 mRNA in HUVECs. METTL3 knockdown weakened the interaction of JAK2 and IGF2BP1. METTL3 exerted its functions through JAK2/STAT3 pathway. In conclusion, METTL3 knockdown prevented AS progression by inhibiting JAK2/STAT3 pathway via IGF2BP1.

scholarly journals In Vitro and In Vivo Antiangiogenic Activity of Crowberry (Empetrum nigrum var. japonicum)

2016 ◽  
Vol 11 (4) ◽  
pp. 1934578X1601100 ◽  
Author(s):  
Hong-Sook Bae ◽  
Hyun Ju Kim ◽  
Da Hye Jeong ◽  
Takahiro Hosoya ◽  
Shigenori Kumazawa ◽  
...  
Keyword(s):  
Umbilical Vein ◽  
Folk Medicine ◽  
Chorioallantoic Membrane ◽  
Tube Formation ◽  
Dependent Manner ◽  
Concentration Dependent Manner ◽  
Empetrum Nigrum ◽  
Antiangiogenic Activity

Crowberry, Empetrum nigrum var. japonicum, is widely used in folk medicine and grows naturally in Korea. Although some constituents and biological activity of Korean crowberry have been examined, there is little detailed information available. In this study, we investigated the effects of ethanol extracts of crowberry (EECB) on the inhibition of angiogenesis, both in vitro and in vivo. The effects of EECB were tested on in vitro models of angiogenesis, that is, tube formation and proliferation of human umbilical vein endothelial cells (HUVECs). EECB exhibited significant inhibitory effects on tube formation of HUVECs in a concentration-dependent manner. In addition, crowberry significantly suppressed the proliferation of HUVECs in a concentration-dependent manner. Furthermore, strong antiangiogenic activity of EECB samples was observed in the in vivo assay using chick embryo chorioallantoic membrane (CAM). These results indicate that crowberry may have potential applications in the prevention and treatment of angiogenesis-dependent human diseases.

scholarly journals Applications of the Chick Chorioallantoic Membrane as an Alternative Model for Cancer Studies

2021 ◽  
pp. 1-16
Author(s):  
Pei-Yu Chu ◽  
Angele Pei-Fern Koh ◽  
Jane Antony ◽  
Ruby Yun-Ju Huang
Keyword(s):  
Alternative Model ◽  
Human Cancer ◽  
Imaging Techniques ◽  
Chorioallantoic Membrane ◽  
Experimental Models ◽  
Chick Chorioallantoic Membrane ◽  
Long Duration ◽  
Chick Embryo Chorioallantoic Membrane ◽  
Cam Model

A variety of in vivo experimental models have been established for the studies of human cancer using both cancer cell lines and patient-derived xenografts (PDXs). In order to meet the aspiration of precision medicine, the in vivomurine models have been widely adopted. However, common constraints such as high cost, long duration of experiments, and low engraftment efficiency remained to be resolved. The chick embryo chorioallantoic membrane (CAM) is an alternative model to overcome some of these limitations. Here, we provide an overview of the applications of the chick CAM model in the study of oncology. The CAM model has shown significant retention of tumor heterogeneity alongside increased xenograft take rates in several PDX studies. Various imaging techniques and data analysis have been applied to study tumor metastasis, angiogenesis, and therapeutic response to novel agents. Lastly, to practically illustrate the feasibility of utilizing the CAM model, we summarize the general protocol used in a case study utilizing an ovarian cancer PDX.

The in vivo antifungal activity of the aqueous extract from Nigella sativa seeds

2003 ◽  
Vol 17 (2) ◽  
pp. 183-186 ◽  
Author(s):  
M. A. U. Khan ◽  
M. K. Ashfaq ◽  
H. S. Zuberi ◽  
M. S. Mahmood ◽  
A. H. Gilani
Keyword(s):  
Antifungal Activity ◽  
Aqueous Extract ◽  
Nigella Sativa ◽  
In Vivo Antifungal Activity

scholarly journals In Vivo Subacute Toxicity and Antidiabetic Effect of Aqueous Extract of Nigella sativa

2017 ◽  
Vol 2017 ◽  
pp. 1-13 ◽  
Author(s):  
Karima Bensiameur-Touati ◽  
Ghouti Kacimi ◽  
El-Mehdi Haffaf ◽  
Sihem Berdja ◽  
Souhila Aouichat-Bouguerra
Keyword(s):  
Aqueous Extract ◽  
Nigella Sativa ◽  
Histological Study ◽  
Diabetic Rats ◽  
Antidiabetic Effect ◽  
Subacute Toxicity ◽  
Wide Range ◽  
Liver And Pancreas ◽  
Liver Tbars

Context. Nigella sativa seeds are usually used as traditional medicine for a wide range of therapeutic purposes. Objective. To investigate the subacute toxicity of NS aqueous extract and select its lowest dose to study its antidiabetic effect. Methods. 5 AqE.NS doses (2, 6.4, 21, 33, and 60 g/Kg) were daily administered to mice by gavage. Biochemical parameters measurements and histological study of the liver and the kidney were performed after 6 weeks of supplementation. Thereafter, and after inducing diabetes by alloxan, rats were treated by 2 g/Kg of AqE.NS during 8 weeks. Metabolic parameters were measured on sera. A horizontal electrophoresis of plasmatic lipoprotein was conducted. Glycogen, total lipids, and triglycerides were measured in the liver. TBARS were evaluated on adipose tissue, liver, and pancreas. Results. AqE.NS showed no variation in urea and albumin at the 5 doses, but hepatotoxicity from 21 g/Kg was confirmed by histopathological observations of the liver. In diabetic rats, AqE.NS significantly decreased glycemia, TG, T-cholesterol, LDL-c, and TBARS and showed a restored insulinemia and a significant increase in HDL-c. Results on the liver indicated a decrease in lipids and a possible glycogenogenesis. Conclusion. AqE.NS showed its safety at low doses and its evident antihyperglycemic, antihyperlipidemic, and antioxidant effect.

scholarly journals Effect of Black Seed (Nigella sativa) and Uziza (Piper guineense) Leaf on the Histology of the Liver of Wistar Albino Rats

2019 ◽  
pp. 1-11
Author(s):  
Okoye Ngozi Franca ◽  
Ikiriko, Favour Ibiwari
Keyword(s):  
Aqueous Extract ◽  
Nigella Sativa ◽  
Positive Control ◽  
Negative Control ◽  
Positive Control Group ◽  
Control Group ◽  
Dependent Manner ◽  
Piper Guineense ◽  
The Third ◽  
Black Seed

Aim: This study was aimed at investigating the effects of aqueous extracts of both Nigella sativa and Piper guineense on the liver enzymes; alanine amino transferase (ALT), aspartate amino transferase (AST) and alkaline phosphatase (ALP). Also the effect of Nigella sativa and Piper guineense extracts on the histology of the liver of Wistar rat was also studied. Materials and Methods: A total of twenty five Wistar rats were used for the study. The animals were grouped into five groups, each having five animals. They were induced with sucrose and margarine to cause high sugar levels and hyperlipidemia respectively except the positive control group which was fed normal feed. The groups were: the positive control group, the negative control group which were induced without treatment, the uziza leaf group which were induced and were treated with 2 ml of aqueous extract of uziza leaf, the black seed group which were induced and were treated with 2 ml of aqueous extract of black seed, and the black seed and uziza group which were induced and were treated with 2ml of aqueous extract of black seed and 2 ml of aqueous extract of uziza leaf.  Results: The result showed that the extracts decreased the ALT and AST and ALP activities in the rats in a time dependent manner with highest decrease obtained on the third week of treatment with the extracts.  The ALT activity (U/L) on the third week of treatment showed for the, negative control (64.48 ± 0.22), uziza leaf (28.82 ± 0.12), black seed (32.65 ± 0.02), black seed and uziza leaf (16.04 ± 0.02) (p≤0.05). The decrease in activity for AST levels (U/L) on the third week of treatment, showed for the negative control (58.00 ± 0.02), uziza leaf (11.00 ± 0.01), black seed (12.00 ± 0.02), black seed and uziza leaf (8.00 ± 0.02). Conclusion: It can be concluded that both uziza leaf and black seed have hepatoprotective effect on the liver.

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