Introduction: Eggshell membrane (ESM) is a tissue found between the eggshell and albumen of eggs that has attractive properties for use in drug delivery systems. Aim: To incorporate ESM used it as model release studies. The color change FTIR analysis biopolymer proved incorporation nimesulide ESM. Results: uptake was 176.83 122.69 mg g-1 by natural cross-linked Release studies were carried out ...

Defining the adsorption behavior of common pheasant Phasianus Colchicus (PC) eggshells for some metal ions (Pb, Cu, Al, and Ag) is subject this study. In addition to that, these metals have also been chosen in many studies prevent environmental pollution. study, Al eggshell was investigated by spectroscopic methods. The process has taken place an aqueous solution. Differences inner, outer membr...

In Drosophila oogenesis, follicle cells derived from somatic tissue surround the oocyte and play key roles in generating properly polarized oocytes. During the later steps of oogenesis, follicle cells are involved in secretion of proteins that make the eggshell, an essential protective layer for the oocyte. Although studies on the signaling processes to make polarized oocytes have been progress...

During development, the chick embryo mobilizes the calcium it needs from two extraembryonic sources, first the yolk and then the eggshell. Since previous studies have strongly suggested that vitamins D and K may regulate chick embryonic calcium metabolism, we have examined here how these vitamins might be involved in regulating the calcium mobilization processes. We used as our experimental sys...

The paper presents the effect of powders obtained from egg-shells and limestone on rheological properties cement pastes. Both were added to Portland CEM I 42.5 R, 30% by mass. higher yield stress plastic viscosity pastes prepared with addition eggshell powder, compared made explained influence membrane its chemical structure. membrane, which absorbs water expands in paste, is causing an increas...

Superfine Particles (SP) of soluble eggshell membrane and medical grade polyurethane (MPU) blend nanofibers were prepared by electrospinning different blend ratios of SP/MPU suspensions for regeneration of the natural fiber-like structure of the eggshell membrane. The addition of SP had no obvious effect on the electrospinning process of MPU nanofibers, and the SP were randomly dispersed in the...

The vitelline membrane (VM), the oocyte proximal layer of the Drosophila eggshell, contains four major proteins (VMPs) that possess a highly conserved "VM domain" which includes three precisely spaced, evolutionarily conserved, cysteines (CX⁷CX⁸C). Focusing on sV23, this study showed that the three cysteines are not functionally equivalent. While substitution mutations at the first (C123S) or t...

Avian eggs contain all the necessary materials for embryonic development except for oxygen, which diffuses in from the environment via pores in the hard, calcified eggshell to the chorioallantoic membrane (CAM), the respiratory organ, which is rich in blood vessels. An air cell is formed at the blunt pole of the egg between the two membranes of the eggshell and enlarges during incubation due to...

A study was made of the localization and assembly of the VM32E protein, a putative vitelline membrane component of the Drosophila eggshell. The results highlight some unique features of this protein compared with the other proteins of the same gene family. At the time of its synthesis (stage 10), the VM32E protein is not detectable in polar follicle cells. However, it is able to move in the ext...

The genetic determination of eggshell coloration has not been determined in birds. Here we report that the blue eggshell is caused by an EAV-HP insertion that promotes the expression of SLCO1B3 gene in the uterus (shell gland) of the oviduct in chicken. In this study, the genetic map location of the blue eggshell gene was refined by linkage analysis in an F(2) chicken population, and four candi...