scholarly journals Transcriptome-based insights into the calcium transport mechanism of chick chorioallantoic membrane

2022 ◽  
Vol 11 (2) ◽  
pp. 383-392
Author(s):  
Qun Huang ◽  
Ran Yang ◽  
Qia Wang ◽  
Hui Teng ◽  
Hongbo Song ◽  
...  
Keyword(s):  
Calcium Transport ◽  
Transport Mechanism ◽  
Chorioallantoic Membrane ◽  
Chick Chorioallantoic Membrane

Transepithelial calcium transport in the chick chorioallantoic membrane. II. Compartmentalization of calcium during uptake

1993 ◽  
Vol 105 (2) ◽  
pp. 381-388 ◽  
Author(s):  
R.E. Akins ◽  
R.S. Tuan
Keyword(s):  
Calcium Transport ◽  
Chorioallantoic Membrane ◽  
Cytosolic Calcium ◽  
Calcium Flux ◽  
Free Calcium ◽  
Extracellular Medium ◽  
Calcium Accumulation ◽  
Chick Chorioallantoic Membrane ◽  
Cellular Compartments ◽  
Endosomal Vesicles

Calcium transport from the eggshell to the developing chick embryo is carried out by the ectoderm cells of the chick chorioallantoic membrane. Primary cells isolated from chick chorioallantoic membrane ectoderm were used to analyze the subcellular distribution of 45Ca2+ accumulated from the extracellular medium. We present evidence suggesting that calcium may be sequestered into endosome-like vesicles during the initial phase of uptake. A combination of techniques were utilized to monitor calcium fluxes and calcium compartmentalization in the cultured chorioallantoic membrane cells: (1) fura-2 fluorescence was used to indicate cytosolic free calcium concentrations, (2) 45Ca2+ tracer was used to follow calcium accumulation in all cellular compartments, and (3) digitonin was used to differentially permeabilize subcellular membranes in order to localize 45Ca2+ by following tracer release profiles. Differences between cytosolic calcium flux and whole cell calcium accumulation suggested that the pathway of calcium uptake from the medium involves sequestration into an internal compartment separate from the cytosol. Kinetic analysis of the digitonin-mediated release of specific subcellular markers (lactate dehydrogenase, NAD-dependent isocitrate dehydrogenase, [3H]inulin, and [3H]-2-deoxyglucose) and preloaded 45Ca2+ indicated that calcium was localized in a compartment similar to endosomal vesicles. Our results are consistent with a transcytotic mechanism for chorioallantoic membrane calcium transport.

scholarly journals Calcium-binding protein of the chick chorioallantoic membrane. I. Immunohistochemical localization

1978 ◽  
Vol 77 (3) ◽  
pp. 743-751 ◽  
Author(s):  
RS Tuan ◽  
WA Scott ◽  
ZA Cohn
Keyword(s):  
Calcium Binding ◽  
Calcium Transport ◽  
External Surface ◽  
Binding Protein ◽  
Chorioallantoic Membrane ◽  
Immunohistochemical Localization ◽  
Calcium Binding Protein ◽  
Transport Function ◽  
Chick Chorioallantoic Membrane

The preparation of a specific antiserum (anti-CaBP) against the calcium-binding protein (CaBP) of the chorioallantoic membrane (CAM) is described. The anti-CaBP appeared to be specific for the CaBP by immunodiffusion and immunoelectrophoresis. Application of the anti-CaBP in immunofluorescence histochemistry revealed that the CaBP is present in the CAM only at developmental ages corresponding with the expression of the calcium transport function of the membrane. Furthermore, the CaBP is localized to the ectoderm of the CAM, appears to be exposed to the entire external surface of the ectoderm, and can be shown to be associated with cells enzymatically dissociated from the CAM. These results are consistent with a functional role of the CaBP in the CAM calcium transport process.

scholarly journals The Chick Chorioallantoic Membrane: A Model of Molecular, Structural, and Functional Adaptation to Transepithelial Ion Transport and Barrier Function during Embryonic Development

2010 ◽  
Vol 2010 ◽  
pp. 1-12 ◽  
Author(s):  
Maria Gabriella Gabrielli ◽  
Daniela Accili
Keyword(s):  
Calcium Transport ◽  
Chorioallantoic Membrane ◽  
Allantoic Fluid ◽  
Model System ◽  
Functional Adaptation ◽  
Acid Base ◽  
Functional Potential ◽  
Chick Chorioallantoic Membrane ◽  
Wide Range ◽  
Respiratory Gases

The chick chorioallantoic membrane is a very simple extraembryonic membrane which serves multiple functions during embryo development; it is the site of exchange of respiratory gases, calcium transport from the eggshell, acid-base homeostasis in the embryo, and ion andH2O reabsorption from the allantoic fluid. All these functions are accomplished by its epithelia, the chorionic and the allantoic epithelium, by differentiation of a wide range of structural and molecular peculiarities which make them highly specialized, ion transporting epithelia. Studying the different aspects of such a developmental strategy emphasizes the functional potential of the epithelium and offers an excellent model system to gain insights into questions partly still unresolved.

scholarly journals Sustainable Development of Chitosan/Calotropis procera-Based Hydrogels to Stimulate Formation of Granulation Tissue and Angiogenesis in Wound Healing Applications

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3284
Author(s):  
Muhammad Zahid ◽  
Maria Lodhi ◽  
Zulfiqar Ahmad Rehan ◽  
Hamna Tayyab ◽  
Talha Javed ◽  
...  
Keyword(s):  
Wound Healing ◽  
Blood Vessels ◽  
Granulation Tissue ◽  
Chorioallantoic Membrane ◽  
Calotropis Procera ◽  
Connective Tissues ◽  
Blood Capillaries ◽  
Chick Chorioallantoic Membrane ◽  
Thaw Cycle ◽  
Freeze Thaw Cycle

The formation of new scaffolds to enhance healing magnitude is necessarily required in biomedical applications. Granulation tissue formation is a crucial stage of wound healing in which granulation tissue grows on the surface of a wound by the formation of connective tissue and blood vessels. In the present study, porous hydrogels were synthesized using chitosan incorporating latex of the Calotropis procera plant by using a freeze–thaw cycle to stimulate the formation of granulation tissue and angiogenesis in wound healing applications. Structural analysis through Fourier transform infrared (FTIR) spectroscopy confirmed the interaction between chitosan and Calotropis procera. Latex extract containing hydrogel showed slightly higher absorption than the control during water absorption analysis. Thermogravimetric analysis showed high thermal stability of the 60:40 combination of chitosan (CS) and Calotropis procera as compared to all other treatments and controls. A fabricated scaffold application on a chick chorioallantoic membrane (CAM) showed that all hydrogels containing latex extract resulted in a significant formation of blood vessels and regeneration of cells. Overall, the formation of connective tissues and blood capillaries and healing magnitude decreased in ascending order of concentration of extract.

scholarly journals Pro-angiogenic and osteogenic composite scaffolds of fibrin, alginate and calcium phosphate for bone tissue engineering

2021 ◽  
Vol 12 ◽  
pp. 204173142110056
Author(s):  
Nupur Kohli ◽  
Vaibhav Sharma ◽  
Alodia Orera ◽  
Prasad Sawadkar ◽  
Nazanin Owji ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Calcium Phosphate ◽  
Bone Tissue Engineering ◽  
Bone Tissue ◽  
Chorioallantoic Membrane ◽  
Cam Assay ◽  
Clinical Model ◽  
Chick Chorioallantoic Membrane ◽  
Biomimetic Method ◽  
Alginate Scaffold

Due to the limitations of bone autografts, we aimed to develop new composite biomaterials with pro-angiogenic and osteogenic properties to be used as scaffolds in bone tissue engineering applications. We used a porous, cross-linked and slowly biodegradable fibrin/alginate scaffold originally developed in our laboratory for wound healing, throughout which deposits of calcium phosphate (CaP) were evenly incorporated using an established biomimetic method. Material characterisation revealed the porous nature and confirmed the deposition of CaP precursor phases throughout the scaffolds. MC3T3-E1 cells adhered to the scaffolds, proliferated, migrated and differentiated down the osteogenic pathway during the culture period. Chick chorioallantoic membrane (CAM) assay results showed that the scaffolds were pro-angiogenic and biocompatible. The work presented here gave useful insights into the potential of these pro-angiogenic and osteogenic scaffolds for bone tissue engineering and merits further research in a pre-clinical model prior to its clinical translation.

scholarly journals Antiangiogenic potential of Jatropha curcas latex in the chick chorioallantoic membrane model

2019 ◽  
Vol 29 (1) ◽  
pp. 32157
Author(s):  
Luciane Madureira Almeida ◽  
Elisa Flávia Luiz Cardoso Bailão ◽  
Illana Reis Pereira ◽  
Fabrício Alves Ferreira ◽  
Patrícia Lima D'Abadia ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Jatropha Curcas ◽  
Physicochemical Characterization ◽  
Chorioallantoic Membrane ◽  
Angiogenesis Inhibitor ◽  
Negative Control ◽  
New Drugs ◽  
Membrane Model ◽  
Chick Chorioallantoic Membrane

AIMS: To perform a physicochemical and phytochemical characterization of Jatropha curcas latex and to investigate its antiangiogenic potential. METHODS: We performed an initial physicochemical characterization of J. curcas latex using thermal gravimetric analyses and Fourier Transform Infrared spectroscopy. After that, phenols, tannins and flavonoids were quantified. Finally, the potential of J. curcas latex to inhibit angiogenesis was evaluated using the chick chorioallantoic membrane model. Five groups of 20 fertilized chicken eggs each had the chorioallantoic membrane exposed to the following solutions: (1) water, negative control; (2) dexamethasone, angiogenesis inhibitor; (3) Regederm®, positive control; (4) 25% J. curcas latex diluted in water; (5) 50% J. curcas latex diluted in water; and (6) J. curcas crude latex. Analysis of the newly-formed vascular net was made through captured images and quantification of the number of pixels. Histological analyses were performed to evaluate the inflammation, neovascularization, and hyperemia parameters. The results were statically analyzed with a significance level set at p ˂0.05.RESULTS: Physicochemical characterization showed that J. curcas latex presented a low amount of cis-1.4-polyisoprene, which reduced its elasticity and thermal stability. Phytochemical analyses of J. curcas latex identified a substantial amount of phenols, tannins, and flavonoids (51.9%, 11.8%, and 0.07% respectively). Using a chick chorioallantoic membrane assay, we demonstrated the antiangiogenic potential of J. curcas latex. The latex induced a decrease in the vascularization of the membranes when compared with neutral and positive controls (water and Regederm®). However, when compared with the negative control (dexamethasone), higher J. curcas latex concentrations showed no significant differences.CONCLUSIONS: J. curcas latex showed low thermal stability, and consisted of phenols, tannins, and flavonoids, but little or no rubber. Moreover, this latex demonstrated a significant antiangiogenic activity on a chick chorioallantoic membrane model. The combination of antimutagenic, cytotoxic, antioxidant and antiangiogenic properties makes J. curcas latex a potential target for the development of new drugs.

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