Article provides a brief overview of the complications arising during construction oil and gas wells in conditions abnormally high low formation pressures. Technological properties solutions used to eliminate emergency situations when drilling intervals catastrophic absorption influx fluid have been investigated. A technology for isolating water excess pressure has developed. The is based on us...

The effects of an extracellular sodium (Na) concentration of 200 mM on function, ionic exchange, and water movements were examined in the vascularly perfused rabbit intraventricular septum. When the perfusate was switched from 142 mMNa to 200 mMNa, dP/ dt fell 20.4% over 2 minutes; dP/dt then recovered to the control level. The time course of the functional recovery correlated with the uptake o...

Because it lacks a lymphatic circulation, the brain must clear extracellular proteins by an alternative mechanism. The cerebrospinal fluid (CSF) functions as a sink for brain extracellular solutes, but it is not clear how solutes from the brain interstitium move from the parenchyma to the CSF. We demonstrate that a substantial portion of subarachnoid CSF cycles through the brain interstitial sp...

The effects of an extracellular sodium (Na) concentration of 200 mM on function, ionic exchange, and water movements were examined in the vascularly perfused rabbit intraventricular septum. When the perfusate was switched from 142 mMNa to 200 mMNa, dP/ dt fell 20.4% over 2 minutes; dP/dt then recovered to the control level. The time course of the functional recovery correlated with the uptake o...

p‘ MANGOS, JOHN A., AND NONA K. MCSHERRY. Micropuncture study of excretion of water and electrolytes by the pancreas. Am. J. Physiol. 22 l(2) : 496-503. 197 l.‘I’he monovalent ionic composition of the primary secretory (acinar) fluid and the transductal fluxes of monovalent ions and water in the duct system of the rat and rabbit pancreas were investigated by using micropuncture and microanalyti...

In this study, we examined aspects of Na(+) and Cl(-) regulation in mosquito larvae of the genus Culex, a group that includes species that tolerate high salinity as well as other forms that are restricted to fresh water. When the euryhaline osmoconformer C. tarsalis was acutely transferred from 30 % to 50 % sea water, the patterns of hemolymph Na(+) and Cl(-) regulation were similar. The underl...

AIM Neutrophil migration in the intestine depends on chemotaxis of neutrophils to CXC chemokines produced by epithelial cells. The goal of this project was to determine if acute induction of a CXC chemokine gradient originating from intestinal epithelial cells is sufficient to induce neutrophil influx into intact intestinal tissue. METHODS AND RESULTS The authors developed a double transgenic...

Aim: Neutrophil migration in the intestine depends on chemotaxis of neutrophils to CXC chemokines produced by epithelial cells. The goal of this project was to determine if acute induction of a CXC chemokine gradient originating from intestinal epithelial cells is sufficient to induce neutrophil influx into intact intestinal tissue. Methods and results: The authors developed a double transgenic...

The flight of 500,000-800,000 Rwandan refugees into the North Kivu region of Zaire in July, 1994, overwhelmed the world's response capacity. During the first month after the influx, almost 50,000 refugees died, an average crude mortality rate of 20-35 per 10,000 per day. This death rate was associated with explosive epidemics of diarrhoeal disease caused by Vibrio cholerae 01 and Shigella dysen...

The effects of intracellular acidification, osmotic shrinkage and ss-adrenergic stimulation on sodium transport across the membrane of lamprey (Lampetra fluviatilis) erythrocytes were investigated. Unidirectional ouabain-insensitive sodium flux, measured using radioactive 22Na, was increased markedly by intracellular acidification, to a lesser extent by osmotic shrinkage and only modestly by ss...