Biomaterial Database

Time sequence and site of fluid accumulation in experimental neurogenic pulmonary edema. 1976

H Hücker, and H Frenzel, and B Kremer, and I E Richter

The initial phase of pulmonary edema development following intracranial pressure elevation was studied by means of transmission electron microscopy. Using perfusion fixation and application of a blood tracer (HRP horseradish peroxidase) the time sequence and site of fluid leakage out of pulmonary vessels was demonstrated: - passage of edema fluid through intercellular clefts of alveolar capillary endothelium - edema accumulation in alveolar interstitial tissue - draining of edema fluid from the alveolar septum to the interstitium of terminal bronchioli and to lymphatic vessels. An early interepithelial fluid leakage out of the alveolar wall remains questionable.

UI	MeSH Term	Description	Entries
D007365	Intercellular Junctions	Direct contact of a cell with a neighboring cell. Most such junctions are too small to be resolved by light microscopy, but they can be visualized by conventional or freeze-fracture electron microscopy, both of which show that the interacting CELL MEMBRANE and often the underlying CYTOPLASM and the intervening EXTRACELLULAR SPACE are highly specialized in these regions. (From Alberts et al., Molecular Biology of the Cell, 2d ed, p792)	Cell Junctions,Cell Junction,Intercellular Junction,Junction, Cell,Junction, Intercellular,Junctions, Cell,Junctions, Intercellular
D007427	Intracranial Pressure	Pressure within the cranial cavity. It is influenced by brain mass, the circulatory system, CSF dynamics, and skull rigidity.	Intracerebral Pressure,Subarachnoid Pressure,Intracerebral Pressures,Intracranial Pressures,Pressure, Intracerebral,Pressure, Intracranial,Pressure, Subarachnoid,Pressures, Intracerebral,Pressures, Intracranial,Pressures, Subarachnoid,Subarachnoid Pressures
D008168	Lung	Either of the pair of organs occupying the cavity of the thorax that effect the aeration of the blood.	Lungs
D008297	Male		Males
D008854	Microscopy, Electron	Microscopy using an electron beam, instead of light, to visualize the sample, thereby allowing much greater magnification. The interactions of ELECTRONS with specimens are used to provide information about the fine structure of that specimen. In TRANSMISSION ELECTRON MICROSCOPY the reactions of the electrons that are transmitted through the specimen are imaged. In SCANNING ELECTRON MICROSCOPY an electron beam falls at a non-normal angle on the specimen and the image is derived from the reactions occurring above the plane of the specimen.	Electron Microscopy
D011650	Pulmonary Alveoli	Small polyhedral outpouchings along the walls of the alveolar sacs, alveolar ducts and terminal bronchioles through the walls of which gas exchange between alveolar air and pulmonary capillary blood takes place.	Alveoli, Pulmonary,Alveolus, Pulmonary,Pulmonary Alveolus
D011654	Pulmonary Edema	Excessive accumulation of extravascular fluid in the lung, an indication of a serious underlying disease or disorder. Pulmonary edema prevents efficient PULMONARY GAS EXCHANGE in the PULMONARY ALVEOLI, and can be life-threatening.	Wet Lung,Edema, Pulmonary,Edemas, Pulmonary,Pulmonary Edemas,Lung, Wet,Lungs, Wet,Wet Lungs
D002196	Capillaries	The minute vessels that connect arterioles and venules.	Capillary Beds,Sinusoidal Beds,Sinusoids,Bed, Sinusoidal,Beds, Sinusoidal,Capillary,Capillary Bed,Sinusoid,Sinusoidal Bed
D002199	Capillary Permeability	The property of blood capillary ENDOTHELIUM that allows for the selective exchange of substances between the blood and surrounding tissues and through membranous barriers such as the BLOOD-AIR BARRIER; BLOOD-AQUEOUS BARRIER; BLOOD-BRAIN BARRIER; BLOOD-NERVE BARRIER; BLOOD-RETINAL BARRIER; and BLOOD-TESTIS BARRIER. Small lipid-soluble molecules such as carbon dioxide and oxygen move freely by diffusion. Water and water-soluble molecules cannot pass through the endothelial walls and are dependent on microscopic pores. These pores show narrow areas (TIGHT JUNCTIONS) which may limit large molecule movement.	Microvascular Permeability,Permeability, Capillary,Permeability, Microvascular,Vascular Permeability,Capillary Permeabilities,Microvascular Permeabilities,Permeabilities, Capillary,Permeabilities, Microvascular,Permeabilities, Vascular,Permeability, Vascular,Vascular Permeabilities
D006259	Craniocerebral Trauma	Traumatic injuries involving the cranium and intracranial structures (i.e., BRAIN; CRANIAL NERVES; MENINGES; and other structures). Injuries may be classified by whether or not the skull is penetrated (i.e., penetrating vs. nonpenetrating) or whether there is an associated hemorrhage.	Frontal Region Trauma,Head Injuries,Head Trauma,Occipital Region Trauma,Parietal Region Trauma,Temporal Region Trauma,Craniocerebral Injuries,Crushing Skull Injury,Forehead Trauma,Head Injuries, Multiple,Head Injury, Minor,Head Injury, Open,Head Injury, Superficial,Injuries, Craniocerebral,Injuries, Head,Multiple Head Injuries,Occipital Trauma,Open Head Injury,Superficial Head Injury,Trauma, Head,Craniocerebral Injury,Craniocerebral Traumas,Crushing Skull Injuries,Forehead Traumas,Frontal Region Traumas,Head Injuries, Minor,Head Injuries, Open,Head Injuries, Superficial,Head Injury,Head Injury, Multiple,Head Traumas,Injuries, Minor Head,Injuries, Multiple Head,Injuries, Open Head,Injuries, Superficial Head,Injury, Craniocerebral,Injury, Head,Injury, Minor Head,Injury, Multiple Head,Injury, Open Head,Injury, Superficial Head,Minor Head Injuries,Minor Head Injury,Multiple Head Injury,Occipital Region Traumas,Occipital Traumas,Open Head Injuries,Parietal Region Traumas,Region Trauma, Frontal,Region Trauma, Occipital,Region Trauma, Parietal,Region Traumas, Frontal,Region Traumas, Occipital,Region Traumas, Parietal,Skull Injuries, Crushing,Skull Injury, Crushing,Superficial Head Injuries,Temporal Region Traumas,Trauma, Craniocerebral,Trauma, Forehead,Trauma, Frontal Region,Trauma, Occipital,Trauma, Occipital Region,Trauma, Parietal Region,Trauma, Temporal Region,Traumas, Craniocerebral,Traumas, Forehead,Traumas, Frontal Region,Traumas, Head,Traumas, Occipital,Traumas, Occipital Region,Traumas, Parietal Region,Traumas, Temporal Region