Impacted foreign bodies in the esophagus can result in respiratory symptoms including stridor and aphonia. Several mechanisms have been proposed to explain these symptoms, but the possibility of vocal cord paralysis and its cause has not been adequately emphasized. Two cases of young children with esophageal foreign body are described; both presented with respiratory symptoms, 1 with aphonia an...

The carotid bodies respond to changes in arterial O(2), CO(2), and pH, and Ca(2+) influx via voltage-gated Ca(2+) channels is an important step in the chemoreception process. The objectives of the present study were as follows: 1) to determine whether hypercapnia modulates Ca(2+) current in glomus cells, and if so, to determine if this modulation is secondary to changes in pH; 2) to examine the...

objective(s): the silver nanoparticles, being very small size, can permeate the cellular membrane and interfere in the cell's natural process. in the present study, the effects of time, the dosage of these particles and their use on blood molecules and hormones, the volume of drinking water, and the urine parameters were analyzed.materials and methods: thirty six rats of the wistar race, as sub...

BACKGROUND Mild solubilization of inclusion bodies has attracted attention in recent days, with an objective to preserve the existing native-like secondary structure of proteins, reduce protein aggregation during refolding and recovering high amount of bioactive proteins from inclusion bodies. RESULTS Here we presented an efficient method for mild solubilization of inclusion bodies by using a...

Differential Diagnosis of Hemolytic Anemia Hemolytic anemia reflects shortened RBC life span due to intravascular, extravascular, or fragmentation hemolysis. Intravascular hemolysis is primarily associated with type 1 hypersensitivity reactions, either idiopathic or secondary to another primary disease. In some cases an infectious intraerythrocytic or epierythrocytic agent or miscellaneous diso...

PURPOSE The intravitreal membrane (IVM) is a membranous structure between the primary and secondary vitreous bodies in developing mammalian eyes. In this study, for the first time the histogenesis of the IVM and the relationship between the hyaloid vasculature and the IVM was characterized in newborn mice. METHODS Eyes of mice less than 12 days old were fixed and embedded. From these, serial ...

In recent years, widespread efforts have been directed towards decreasing the costs associated with microalgae culture systems for the production of biofuels. In this study, a simple and inexpensive strategy to bio-prospect and cultivate mixed indigenous chlorophytes with a high carbohydrate content for biomethane and biohydrogen production was developed. Mixed microalgae were collected from fo...