Microcirculation of the Rat Omentum Studied by Means of Corrosion Casts

Abstract

A study of the microvasculature of the omentum using corrosion casts was undertaken. The object was to supply information regarding the morphology of the three-dimensional structure of the microvasculature information which may be valuable in understanding the functions of the omentum. Corrosion casts of rat omenta were prepared and studied. Characteristic glomerular-like capillary beds were identified. Some of these beds were densely and others loosely arranged. Two types of capillaries made up these beds, tortuous and straight capillaries. These beds also showed a planate surface giving the impression that they lie directly under the mesothelium.

Role of peritoneal mesothelial cells in peritonitis

“…In the omentum, neutrophils and macrophages arise in perivascular areas known as ‘milky spots’, which were first described by the French anatomist Ranvier in 187420. The milky spots lie beneath stomata in the peritoneum and this arrangement allows for the easy egress of cells into the peritoneal cavity21. The number of milky spots is highest in infancy and gradually decreases with age; in children with peritonitis they look like threads of white cotton.…”

Bioengineering the Endocrine Pancreas: Intraomental Islet Transplantation Within a Biologic Resorbable Scaffold

“…It is composed of two mesothelial sheets containing rich capillary networks draining into the portal venous system (19–21). Furthermore, intraomental islet implantation was shown to improve metabolic control in diabetic animal models (22,23).…”

Cirugía de abdomen abierto en gineco obstetricia: indicaciones, técnica y manejo

“…Las CMP pueden expresar en su superficie marcadores que les permiten: a) promover la marginación y migración de neutrófilos, b) interactuar con la matriz extracelular proteínica, c) presentar antígenos a las células inmunitarias y d) producir biológicamente moléculas importantes como citoquinas proinflamatorias (IL-6, IL-8 FNT alfa), óxido nítrico, factores de crecimiento, activador del plasminógeno tisular, e inhibidor del activador del plasminógeno, para así mismo combatir la colonización y eliminar elementos extraños. 4,[12][13][14] La peritonitis se divide inicialmente en dos fases. La primera, la fase séptica, es el resultado de la defensa inicial del huésped al absorber las bacterias intraperitoneales a través de los estomas y conducirlos a través del conducto torácico al torrente circulatorio, resultando en una bacteriemia.…”