(n.) A thin layer or fold of tissue, usually supported by a fibrous network, serving to cover or line some part or organ, and often secreting or absorbing certain fluids.
Example Sentences:
(1) Tryptic digestion of the membranes caused complete disappearance of the binding activity, but heat-treatment for 5 min at 70 degrees C caused only 40% loss of activity.
(2) The extents of phospholipid hydrolysis were relatively low in brain homogenates, synaptic plasma membranes and heart ventricular muscle.
(3) The patterns observed were: clusters of granules related to the cell membrane; positive staining localized to portions of the cell membrane, and, less commonly, the whole cell circumference.
(4) Activity of Na,K-ATPase activity was measured as a functional marker for synaptosomal membranes.
(5) The influence of the various concepts for the induction of lateral structure formation in lipid membranes on integral functional units like ionophores is demonstrated by analysing the single channel current fluctuations of gramicidin in bimolecular lipid membranes.
(6) Phospholipid methylation in human EGMs is distinctly different from that in rat EGMs (Hirata and Axelrod 1980) in that the human activity is not Mg++-dependent, and apparent methyltransferase I activity is located in the external membrane surface.
(7) The predicted non-Lorentzian line shapes and widths were found to be in good agreement with experimental results, indicating that the local orientational order (called "packing" by many workers) in the bilayers of small vesicles and in multilamellar membranes is substantially the same.
(8) Apparently, the irradiation with visible light of a low intensity creates an additional proton gradient and thus stimulates a new replication and division cycle in the population of cells whose membranes do not have delta pH necessary for the initiation of these processes.
(9) Using monoclonal antibodies directed against the plasma membrane of Madin-Darby canine kidney (MDCK) cells, we demonstrated previously that a glycoprotein with an Mr = 23,000 (gp23) had a non-polarized cell surface distribution and was observed on both the apical and basolateral membranes (Ojakian, G. K., Romain, R. E., and Herz, R. E. (1987) Am.
(10) The fraction of the viral dose which became cell associated was independent of the incubation temperature and increased with increasing target membrane concentration.
(11) Together these results suggest that IVC may operate as a selective activator of calpain both in the cytosol and at the membrane level; in the latter case in synergism with the activation induced by association of the proteinase to the cell membrane.
(12) The Cole-Moore effect, which was found here only under a specific set of conditions, thus may be a special case rather than the general property of the membrane.
(13) We have examined the insertion of bovine 17 alpha-hydroxylase (P45017 alpha) into the endoplasmic reticulum of COS 1 cells to evaluate the functional role of its hydrophobic amino-terminal sequence and membrane insertion.
(14) The transport of potassium ions through membranes of red blood cells was examined in in bitro experiments using a CMF of 4500 oersted.
(15) These membrane perturbation effects not observed with bleomycin-iron in the presence of a hydroxyl radical scavenger, dimethyl thiourea, or a chelating agent, desferrioxamine, were correlated with the ability of the complex to generate highly reactive oxygen species.
(16) Extensive studies during recent years have shown that the interaction between hormone and membrane-bound receptor can affect the receptor characteristics in at least two ways.
(17) Membranes of this material were filled with islets of Langerhans and implanted in the peritoneal cavity of rats.
(18) The penicillin-resistant Enterococcus hirae R40 has a typical profile of membrane-bound penicillin-binding proteins (PBPs) except that the 71 kDa PBP5 of low penicillin affinity represents about 50% of all the PBPs present.
(19) To investigate the mechanism of enhanced responsiveness of cholesterol-enriched human platelets, we compared stimulation by surface-membrane-receptor (thrombin) and post-receptor (AlF4-) G-protein-directed pathways.
(20) Moreover, in DCVC-treated cells the mitochondria could not be stained with rhodamine-123, indicating severe mitochondrial damage and loss of membrane potential.
Mesentery
Definition:
(n.) The membranes, or one of the membranes (consisting of a fold of the peritoneum and inclosed tissues), which connect the intestines and their appendages with the dorsal wall of the abdominal cavity. The mesentery proper is connected with the jejunum and ilium, the other mesenteries being called mesocaecum, mesocolon, mesorectum, etc.
(n.) One of the vertical muscular radiating partitions which divide the body cavity of Anthozoa into chambers.
Example Sentences:
(1) of PLA2 caused marked degranulation of mast cells in the rat mesentery which was facilitated by addition of calcium ion (10 mM) but antagonized by pretreating with three antiinflammatory agents.
(2) Previous histological evidence of the uptake of these particles and their absorption across the gastrointestinal tract and passage via the mesentery lymph supply and lymph nodes to the liver and spleen was confirmed by analysis of tissues for the presence of polystyrene by gel permeation chromatography.
(3) The greatest problems appeared in diagnosing thrombosis of mesenterial vessels and acute appendicitis in cases with the retrocecal disposition of the vermiform process.
(4) The islets, 3 000 to 5 000, were transplanted to alloxan diabetic recipients, in a territory, preferentially with portal-hepatic drainage (mesentery and spleen).
(5) As revealed, hypophysectomy and adrenalectomy caused disturbances of vascular permeability in the mesentery.
(6) In numerous points of these plexuses, single adrenergic fibers or polyaxonal structures are observed to issue into nonvascular areas of the mesentery where after repeated dichotomic division they pass into the preterminal and terminal parts.
(7) In addition there was an associated hypertrophy of the lymph nodes in the ileal loop mesentery.
(8) These changes in density are thought to represent diffuse fat edema, most prominently in the mesentery because of portal hypertension.
(9) In the last three patients with unresectable adenocarcinoma of the distal part of the stomach and invasion of the intestinal mesentery, due to foreshortening of the latter, the proximal loop of the intestine would not reach the desired level of the stomach until this maneuver was performed.
(10) Mesenterial fibromatosis, also known as aggressive fibromatosis or desmoid tumor is generally associated with Gardner's syndrome but otherwise an extremely rare disease.
(11) Dose-dependent vasodilator responses to dopamine, isoprenaline, noradrenaline, 3-isobutyl-1-methylxanthine (IBMX) and sodium nitroprusside were obtained in isolated perfused mesentery preparations, taken from reserpine-treated rats of different ages.
(12) These cells were found in the intestitial tissue of the dorsal mesentery or in the genital ridge.
(13) We now show that the protection afforded by this immunization protocol is systemic and that animals can be protected against tumor growth in the cecum, lymphatics of the mesentery, liver and lung.
(14) PGCs were mainly found in the hindgut epithelium, some at the stage of separation from the endoderm, and others in migration through the mesenchyme of the dorsal mesentery between the primitive intestinal wall and the coelomic epithelium, including the coelomic angle.
(15) In those instances, the osmium-amine reacted not only in the outer surface of the mesentery, but also penetrated with no visible reaction all the way to the connective tissue where it was detected in the elastic layer.
(16) The perivascular protein contents, which corresponds besides arterioles to 40% and besides venules to 59% in comparison to the intravascular blood plasma, decreased in a comparison group under the osmotic influence of the perfusion liquid on the mesenterial plate.
(17) At operation, two localized tumors were found, one located in the jejunum approximately 20 cm distal to the ligament of Treitz, accompanied by perforation and another approximately 20 cm distal to the above lesion in the mesentery.
(18) It appears that in rat mesentery, impulses travelling via cholinergic, parasympathetic fibers innervating mast cells, cause mast cell swelling.
(19) In this situation, intense vascular spasm was seen and any light transmitted through the colon which fell on the small bowel mesentery caused a lethal ischaemic necrosis.
(20) They are formed on acetate-cellulose (AC) membranes implanted into the mice peritoneal cavity and into the mesentery after radiation and intraperitoneal injection of a donor's bone marrow.