Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0011570 (depression)
 172,036 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

By using DNCB delayed hypersensitivity test, the reaction of spontaneous rosette formation (RSRF) and the reaction of inhibition of leucocytes migration the authors examined 55 female patients with different forms of trophoblastic tumors of the uterus and 15 females following the removal of the mole without any signs of the disease concerned. Forty three patients showed a positive DNCB test, 93 of them were completely cured, a negative test was noted in 12 patients, only a 50% cure being observed. RSRF indicated the increased level of rosette-forming cells from 4,7--28% up to 10,3--73% in a successful treatment and its decrease down to 0--5% in the tumor progression, except 7 patients showing reduced RFC levels after the recovery. The reaction of leucocytes migration inhibition has revealed a considerable depression of leucocytes migration (MI--from 0.35 to 0.78) in 18 of 25 patients with manifestations of an acute tumor process (72%). In 7 cases no inhibition was noted, in 6--the treatment being insignificantly effective or time-consuming. In 21 (47.8%) of 27 patients without any signs of the affection there was no inhibitory effect. Leucocytes of healthy donors failed to respond to the tumor extract in either of 24 cases.
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PMID:[Immunological reactivity study of patients with uterine trophoblastic tumors]. 22 75

A case of classical Sturge-Weber syndrome associated with infantile spasms (female infant, aged 4 months) was presented. The association of both conditions would be very rare since no similar case was found among 214 cases of Sturge-Weber syndrome and 1,180 cases of infantile spasms gathered from the literature, except for one who was reported by Millichap et al. Evolutional changes of electroencephalographic findings were followed up for about 3 years on average in 5 personal cases of Sturge-Weber syndrome. Unilateral depression of electrical activity in the cerebral hemisphere ipsilateral to the facial nevi was the constant finding. Focal spike discharges were noticed only in the contralateral hemisphere in 3 cases, only in the ipsilateral in 1, and in the bilateral in 1.
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PMID:A study on Sturge-Weber syndrome. Report of a case associated with infantile spasms and electroencephalographic evolution in five cases. 47 91

1. Bicarbonate transport across human red cell membranes was studied between 0 and 10 degrees C at alkaline pH values by determining the efflux of 14C-labelled bicarbonate from resealed erythrocyte ghosts. Transfer of labelled CO2 was eliminated as a source of error, when formation of intracellular 14CO2 was inhibited with carbonic anhydrase inhibitors. The study showed that there are no fundamental differences between the characteristics of bicarbonate and of chloride self-exchange as has been inferred from previous studies of chloride-bicarbonate exchange. 2. Efflux of radioactivity could be reduced more than 99% by reversible and irreversible inhibitors of anion transport. Inhibition of both chloride and bicarbonate self-exchange was linearly related to the binding of 4,4'-diisothiocyanostilbene-2,2'-disulphonic acid (DIDS) to the membranes. Complete (i.e. greater than 99%) inhibition was obtained after binding of 1.2 x 10(6) DIDS molecules per cell. 3. Bicarbonate self-exchange proved a saturable function of bicarbonate concentration, with a maximum at external and internal concentrations of approximately 100 mM, showing self-depression at higher bicarbonate concentrations, and half-maximum exchange flux at a concentration of 10 mM. The results were consistent with the hypothesis that the exchange mechanism has two anion binding sites, one mediating ion transport and the other causing transport inhibition. 4. Maximum exchange flux of bicarbonate was about 30% larger thant that of chloride, and the affinity of bicarbonate for the transport site was about three times larger than that of chloride. The apparent activation energy of bicarbonate exchange was 28 kcal/mole, the same order of magnitude as found for other inorganic anions between 0 and 10 degrees C. 5. The ability of other inorganic anions to exchange with bicarbonate decreased in the sequence Cl greater than NO3 greater than F greater than Br greater than or equal to I, corresponding to the sequence of the rate of self-exchange of halides. 6. Counter-transport of bicarbonate could be driven by a chloride gradient, when ghosts containing KCl were suspended in a medium containing traces of labelled bicarbonate in addition to a non-permeating anion. Concentration ratios (ci/co) up to about 1000 could be obtained. 7. It is concluded that bicarbonate is transported by the inorganic anion exchange mechanism of the erythrocyte membrane. The slight differences between the exchange kinetics of chloride and bicarbonate were explained by differing affinities of the two anions for the two anion binding sites of the transport system.
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PMID:Bicarbonate exchange through the human red cell membrane determined with [14C] bicarbonate. 51 56

The antagonizing action of hydrostatic pressure against anesthesia is well known. The present study was undertaken to quantitate the effects of hydrostatic pressure and anesthetics upon the phase-transition temperature of dipalmitoyl phosphatidylcholine vesicles. The drugs used to anesthetize the phospholipid vesicles included an inhalation anesthetic, halothane, a dissociable local anesthetic, lidocaine and an undissociable local anesthetic, benzyl alcohol. All anesthetics decreased the phase-transition temperature dose-dependently. In the case of lidocaine, the depression was pH dependent and only uncharged molecules were effective. The application of hydrostatic pressure increased the phase-transition temperature both in the presence and the absence of anesthetics. The temperature-pressure relationship was linear over the entire pressure range studied up to 340 bars. Through the use of Clapeyron-Clausius equation, the volume change accompanying the phase-transition of the membrane was calculated to be 27.0 cm3/mol. Although the anesthetics decreased the phase-transition temperature, the molar volume change accompanying the phase-transition was not altered. The anesthetics displaced the temperature-pressure lines parallel to each other. The mole fraction of the anesthetics in the liquid crystalline membrane, calculated from the van't Hoff equation, was independent of pressure. This implies that pressure does not displace the anesthetics from the liquid membrane, and the partition of these agents remains constant. The volume change of the anesthetized phospholipid membranes is entirely dependent upon the phase-transition and not on the space occupied by the anesthetics.
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PMID:Antagonism between high pressure and anesthetics in the thermal phase-transition of dipalmitoyl phosphatidylcholine bilayer. 58 48

Hyperthermic treatment of the murine lung in the range of 40-46 degrees C inhibited the production of colony-stimulating factors by the lung in vitro. This inhibition was dose dependent. Thermodynamic analysis was used to determine the activation energies. The Arrhenius plot contained a transition at 43 degrees C. At temperatures below and above the transition temperature, the activation energies were 40.49 and 197 kcal/mole, respectively. Below the transition temperature, the effect of hyperthermia was characterized by a delayed response represented by the broad initial shoulder of the hyperthermic dose-response curves. To investigate the mechanism of hyperthermia-induced reduction of the colony-stimulating factor production, the effect of hyperthermia on the protein synthesis by the lung was also studied. The results indicated an immediate response to hyperthermia, characterized by the absence of the initial shoulder and the high slope of the hyperthermic dose response curves. The corresponding Arrhenius plot did not have any transition point. The single activation energy calculated was 97.25 kcal/mole. It is concluded that the hyperthermic depression of the colony-stimulating factor production by the lung cannot be explained solely on the basis of the effects of hyperthermia on the protein synthesis.
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PMID:Effects of hyperthermia on the colony-stimulating factor production by the lung. 155 48

Phosphatidylinositol (PI) kinase activity was solubilized from rat liver microsomes and partially purified by chromatography on hydroxyapatite and Reactive Green 19-Superose. Examination of the ATP dependence using a mixed micellar assay gave a Km of 120 microM. The dependence of reaction rate on PI was more complicated. PI kinase bound a large amount of Triton X-100, and as expected for a micelle-associated enzyme utilizing a micelle-associated lipid substrate, the reaction rate was dependent on the micellar mole fraction, PI/(PI + Triton X-100), with a Km of 0.02 (unitless). Activity showed an additional dependence on bulk PI concentration at high micelle dilution. These results demonstrated two kinetically distinguishable steps leading to formation of a productive PI/enzyme(/ATP) complex. The rate of the first step, which probably represents exchange of PI from the bulk micellar pool into enzyme-containing micelles, depends on bulk PI concentration. The rate of the second step, association of PI with enzyme within a single micelle, depends on the micellar mole fraction of PI. Depression of the apparent Vmax at low ionic strength suggested that electrostatic repulsion between negatively charged PI/Triton X-100 mixed micelles inhibits PI exchange, consistent with a model in which intermicellar PI exchange depends on micellar collisions.
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PMID:Bimodal lipid substrate dependence of phosphatidylinositol kinase. 216 46

Raman spectroscopy has been used to monitor the concentration of halothane (1-bromo-1-chloro-2,2,2-trifluoroethane) in 20% aqueous dispersions of dipalmitoylphosphatidylcholine (DPPC) as well as to follow changes in the acyl chain order within the hydrocarbon interior of the liposomes. Temperature profiles for the gel to liquid-crystalline phase transitions for the liposomes were constructed from changes in peak height intensity ratios in the C-H stretching mode and C-C stretching mode regions. Halothane present at the clinical level produces a change of -0.5 degrees C in the phase transition temperature. A limiting transition temperature of about 21 degrees C and saturation of the gel phase occur when the molar ratio of halothane to DPPC reaches about 1.25. At molar ratios above 2.1, the liquid-crystalline phase is also saturated with halothane. Calculations of the distribution of halothane between the various phases in the system are presented and used to interpret literature data as well as the present experiments. Ideal solution theory accounts rather well for the depression in the transition temperature over most of the mole ratio range, an outcome which implies that halothane is excluded from the hydrocarbon interior but not the head-group region in the gel phase. The role of halothane in the head-group region is discussed.
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PMID:Effects of halothane on dipalmitoylphosphatidylcholine liposomes: a Raman spectroscopic study. 360 27

2,4-Dinitrophenol, dicoumarol, carbonylcyanide, m-chlorophenyl-hydrazone and pentachlorophenol all depressed aerobic molar growth yields of Streptococcus agalactiae to values equal to, or less than, those supported by substrate level phosphorylation. When the only source of energy was from substrate phosphorylation (anaerobic growth conditions), there was also a severe depression of the molar growth yield by the same four uncoupling agents. These results indicate that the effect of these agents is to uncouple both substrate and oxidative phosphorylation in S. agalactiae. Amytal inhibited glucose utilization, reduced the amount of O(2) used per mole of substrate and reduced the molar cell yield to that supported by substrate phosphorylation. Atebrin inhibited the respiration rate, but final O(2) consumed per mole of substrate was unchanged, and the respiration was coupled to biosynthesis. Rotenone had no effect on respiration, substrate utilization, or on molar growth yields.
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PMID:Effect of uncoupling agents and respiratory inhibitors on the growth of Streptococcus agalactiae. 414 29

1. When applied directly to the brain, angiotensin II amide, as either the valine(5) octapeptide, causes rats in normal fluid balance to drink water.2. The drinking response to angiotensin injections is copious, rapid, repeatable within the same test session, and stable over months of testing in the same animal.3. The response is motivationally potent and specific. After injection the animals move directly to the source of water and drink. There is typically no preliminary hyperactivity or subsequent depression. The animals do not eat, gnaw or exhibit other behaviours that are not normally seen during spontaneous drinking. The injections rouse sleeping animals to drink and interrupt eating in animals deprived of food for two days.4. The region of the brain that is most sensitive to angiotensin includes the anterior hypothalamus, the preoptic region, and the septum including the nucleus accumbens.5. Intracranial renin elicited drinking. Bradykinin and vasopressin did not, nor did adrenaline, noradrenaline or aldosterone. In the most sensitive region, sites positive for angiotensin also yielded drinking to carbachol.6. Responses were obtained with 5 ng (ca. 5 p-mole) and occurred reliably with 50 ng angiotensin or more. The dose-response curve for amount drunk rose from 5 to 100 ng and levelled off thereafter. Angiotensin is therefore the most potent dipsogen known and is effective at doses that are reasonably within the concentration range for circulating endogenous angiotensin.7. Injections into the sensitive region of doses of angiotensin that were effective for drinking did not produce peripheral haemodynamic changes in lightly anaesthetized rats.8. This work strengthens the suggestion that angiotensin is a natural hormone of drinking behaviour that participates in extracellular thirst by its release from the kidney and subsequent direct action on a specific chemoreceptive region in the anterior diencephalon and limbic lobe.
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PMID:Drinking induced by injection of angiotensin into the rain of the rat. 432 23

Growth of Streptococcus faecalis in a complex medium was inhibited by xenon, nitrous oxide, argon, and nitrogen at gas pressures of 41 atm or less. The order of inhibitory potency was: xenon and nitrous oxide > argon > nitrogen. Helium appeared to be impotent. Oxygen also inhibited streptococcal growth and it acted synergistically with narcotic gases. Growth was slowed somewhat by 41 atm hydrostatic pressure in the absence of narcotic gases, but the gas effects were greater than those due to pressure. In relation to the sensitivity of this bacterium to pressure, we found that the volume of cultures increased during growth in a volumeter or dilatometer, and that this dilatation was due mainly to glycolysis. A volume increase of 20.3 +/- 3.6 ml/mole of lactic acid produced was measured, and this value was close to one of 24 ml/mole lactic acid given for muscle glycolysis, and interestingly, close to the theoretic volume increase of activation calculated from the depression of growth rate by pressure.
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PMID:Growth of Streptococcus faecalis under high hydrostatic pressure and high partial pressures of inert gases. 497 26


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