Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0085631 (agitation)
 12,064 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

In this double-blind study dihydrotachysterol (DHT) was given orally to eight psychotic patients; in each case marked increases in psychosis and agitation accompanied increases in serum calcium and phosphorus within two weeks after active drug was substituted for placebo. In the three patients whose psychoses exhibited periodic spontaneous exacerbations, the agitated episodes grew more severe. Serum creatine phosphokinase (CPK) increased in all but one patient. By contrast, when three periodically psychotic patients received synthetic salmon calcitonin (SCT), the severity and frequency of agitated episodes decreased while CSF calcium increased in all three. These data support the hypothesis that the observed abrupt increases in serum calcium and phosphorus might cause the opposite CSF calcium shifts, the behavioral agitation and the increases in serum CPK frequently noted during acute psychosis.
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PMID:Calcium: pacesetting the periodic psychoses. 3 47

Decreases in cerebrospinal fluid (CSF) calcium accompany mood elevation and motor activation in depressed patients undergoing treatment with ECT, lithium, and total sleep deprivation. Similarly, decreases in CSF calcium occur during acute psychotic agitation or mania. On the other hand, periodic recurrences of such agitated states are accompanied at their onset by transient increases in serum calcium and phosphorus. Several observations suggest that such serum ion shifts may trigger the more enduring and opposite shifts in CSF calcium and, in turn, the manic behavior. Progressive restriction of dietary calcium was earlier reported to mitigate and finally abolish both rhythmic rises in serum calcium and periodic agitated episodes in one psychotic patient. Lithium, which decreases the efficiency of alimentary calcium absorption, may function similarly. Conversely, a modest oral calcium lactate supplement (approximately one additional Recommended Daily Allowance of dietary calcium) seemed to slightly intensify agitation in six patients. Dihydrotachysterol (DHT), an analogue of vitamin D, which more exactly mimics the increase in both serum calcium and phosphorus, appeared in at least one periodically psychotic patient to trigger and opposite shift in CSF calcium. Moreover, in eight patients, manic symptomatology appeared de novo or grew significantly and substantially worse during 2 to 6 weeks of oral DHT administration. On the other hand, in 12 patients, subcutaneous injections of synthetic salmon calcitonin (SCT) decreased serum calcium and phosphorus, increased CSF calcium, and decreased agitation while augmenting depressive symptomatology. SCT also decreased quantified motor activity, frequency and severity of periodic agitated episodes, serum CPK and prolactin, and nocturnal sleep, while DHT or calcium lactate had opposite effects on the same parameters.
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PMID:Calcium: bivalent cation in the bivalent psychoses. 47 21

Small but statistically significant increases in serum total calcium and serum inorganic phosphorus concided with repeated onsets of psychotic agitation or mania in nine psychotic in-patients experiencing rapid cycles of illness. These increases were not accompanied by changes in magnesium or other constituents, which might suggest non-specific haemoconcentration. Similar increases in calcium or phosphorus were not present in patients without the same cycles of psychotic illness. The observed increases could neither be simulated nor altered by stress or activity, and it remains unclear whether they might be accounted for by dietary changes, sleep disruption, circadian phase shifts or by endocrine alterations.
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PMID:Increased serum calcium and phosphorus with the 'switch' into manic or excited psychotic state. 49 26

Synthetic salmon calcitonin was administered subcutaneously to 12 inpatients with several primary psychotic diagnoses. Increases in serum total calcium and inorganic phosphorus levels and decreases in CSF calcium level had earlier been observed during periodic psychotic agitation or mania. By contrast, calcitonin, which decreased serum calcium and phosphorus levels and increased CSF calcium level, appeared to produce transient (24-hour) increases in depression and decreases in arousal in this double-blind placebo-controlled trial. Quantitative activity monitoring confirmed the rater's impression that this agent had tranquilizing or depressant effects in such patients. When given in the evening, this polypeptide also appeared to delay sleep onset, as demonstrated both by nurses' 30-minute sleep checks and by the same longitudinal activity record. A decreased hypocalcemic response to calcitonin was noted in the agitated patients, which might explain the increases in serum calcium level described at the "switch".
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PMID:Use of calcitonin in psychotic agitation or mania. 76 Jun 98

The phospholipid and fatty acid contents of developing rod photoreceptor cells were determined in dissociated photoreceptor cells obtained from normal mice and from rd mice exhibiting an inherited retinal degeneration. Photoreceptors were dissociated from retinas by mechanical agitation after mild protease treatment and characterized by light and electron microscopy. Phospholipid classes were isolated by thin-layer chromatography, and fatty acyl groups separated and quantitated by capillary gas-liquid chromatography. Developing photoreceptor cells of normal retinas accumulated all phospholipid classes, but in proportions which shifted with age. The mole % contents of phosphatidylcholine (PC) and phosphatidylinositol (PI) decreased with age, whereas phosphatidylethanolamine (PE) and phosphatidylserine (PS) increased. The content of the polyunsaturated fatty acid docosahexaenoate (22:6), expressed as nmol/microgram lipid phosphorus, increased rapidly during development, whereas arachidonate (20:4) content tended to decline. Mono-unsaturated fatty acid levels (palmitoleate, 16:1; oleate, 18:1) declined with age. Among saturated fatty acids, palmitate (16:0) decreased during normal development, whereas stearate (18:0) increased. The total mass of phospholipid/photoreceptor cell in the normal, adult mouse retina was estimated to be approximately 14 pg. The total phospholipid content and mole % distribution of individual phospholipid classes in immature rd photoreceptors were similar to values for normal cells. In contrast, significant changes in fatty acid composition were detected between immature rd cells and normal cells. Rd cells generally had higher levels of saturated (myristate, 14:0; palmitate, 16:0) and monounsaturated fatty acids (oleate, 18:1) and lower levels of polyunsaturated fatty acids (arachidonate, 20:4; docosahexaenoate, 22:6), suggesting that fatty acid metabolism is altered by expression of the rd gene and/or by the associated impairment of photoreceptor cell differentiation.
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PMID:Developing rod photoreceptors from normal and mutant Rd mouse retinas: altered fatty acid composition early in development of the mutant. 317 77

A 7-year-old, crossbred, desexed bitch had a fluctuating illness of more than 6 months duration, with signs of inappetence, reduced exercise tolerance, restlessness, panting, black diarrhoea, and red eyes and ears. Haematological examination disclosed persistent polycythaemia, reticulocytosis, normoblastaemia , and normal total plasma protein concentration when not dehydrated. Splenomegaly was present, but there was no evidence of significant pulmonary, cardiac or renal disease on physical, radiographic or electrocardiographic examination. Further investigations revealed normal arterial Po2 and oxygen saturation, and increased total erythrocyte volume. Primary polycythaemia was diagnosed. The dog was rendered anaemic by bleeding, then treated with a single injection of radioactive phosphorus. The patient has had no recurrence of signs and remains well 50 months later.
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PMID:Primary polycythaemia in a dog. 673 71

Short-term experiments on the effect of temperature on the rate of oxytetracycline biosynthesis and consumption of carbohydrates, ammonium nitrogen and inorganic phosphorus were performed under various conditions of mass exchange. Complete fermentation cycles were also carried out at the same temperatures. It was shown that the temperature optimal under conditions of a short-term experiment was not optimal for the complete fermentation cycle. In the latter case the results also depended on the aeration and agitation conditions. It is suggested that temperature has a nonspecific effect by changing the conditions of oxygen supply to the microbial culture.
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PMID:[Effect of temperature on the kinetics of the oxytetracycline biosynthesis process]. 712 17

Ten cases of ingestion of yellow phosphorus rat poison, including four cases that occurred during the past 3 years, are reported. Comparison of these cases with 82 others from the literature showed that ingestion of yellow phosphorus paste often results in clinical findings that are different from those described for acute yellow phosphorus poisoning in current toxicology texts. The time lag between swallowing of the poison and onset of symptoms varied from a few minutes to 24 h. Garlic odor, mucosal burns, and phosphorescent vomitus or feces occurred in only a small percentage of cases. Diarrhea was not a presenting complaint. Initial symptoms were referable to the gastrointestinal tract, central nervous system, or both. Mortality rates were 23% for patients who had early symptoms of vomiting or abdominal pain; 73% for those where the first manifestation of intoxication was restlessness, irritability, drowsiness, stupor, or coma; and 47% for patients who had a combination of these GI and CNS symptoms initially. Applying standard diagnostic criteria for yellow phosphorus poisoning to patients who have consumed yellow phosphorus pastes may result in serious diagnostic errors.
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PMID:Acute yellow phosphorus poisoning from pesticide pastes. 727 76

Reliable estimation of nutrient concentrations is required to manage animal manure for protecting waters while sustaining crop production. This study was conducted to investigate sample variability and reliable nutrient analysis for several manure types and handling systems. Serial samples were collected from dairy, swine, and broiler poultry operations while manure was being loaded onto hauler tanks or spreaders for field application. Samples were analyzed for total solids (TS), total nitrogen (N), ammoniacal nitrogen (NH4-N), total phosphorus (P), and potassium (K). The least number of samples needed for reliable testing of total N and P, defined as +/- 10% of the experimental means with 99% probability, was obtained for each farm using a computer-intensive random resampling technique. Sample variability within farms, expressed as the coefficient of variation (CV), was mostly 6 to 8% for farms that used agitation of manure storages but several times higher (20-30%) on farms where no agitation was applied during the sampling period. Results from the random resampling procedure indicated that for farms that used agitation, three to five samples were adequate for a representative composite for reliable testing of total N and P; whereas for farms without agitation, at least 40 samples would be required. Data also suggest that using book values for manure nutrient estimations could be problematic because the discrepancies between book standards and measured farm data varied widely from a small amount to several fold.
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PMID:Manure sampling for nutrient analysis: variability and sampling efficacy. 1147 22

Increased serum inorganic phosphorus associated with elevated serum calcium has been demonstrated to coincide with the onset of agitation and mania in periodic psychoses and bipolar disorders. We tested the hypothesis that unexplained transient hyperphosphatemia (UTHP) is more common in patients with psychiatric disorders than in controls with medical or surgical conditions. We studied 100 patients admitted to a psychiatric ward and 100 controls admitted to a medical-surgical ward. All subjects (patients and controls) underwent acute admission to the same general hospital. The serum phosphorus was measured upon admission and, if elevated, followed during the hospital course. Twenty patients (20%) with psychiatric disorders had unexplained hyperphosphatemia compared with four medical-surgical controls (4%). UTHP occurred in six patients with psychiatric disorders and no controls. Hypophosphatemia did not occur in subjects with psychiatric disorders. This study shows an increased incidence of UTHP in acutely ill, hospitalized patients with psychiatric disorders relative to acutely ill, hospitalized controls with medical-surgical conditions. These data extend previous findings by linking UTHP to acute psychiatric disturbances across varied psychiatric diagnoses independent of hypercalcemia. Potential explanations include trazodone administration and transient hypocalcemia.
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PMID:Unexplained transient hyperphosphatemia is more common in acute psychiatric disorders than in acute medical-surgical conditions. 1268 66


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