Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts: Gene/Protein Disease Symptom Drug Enzyme Compound   Target Concepts: Gene/Protein Disease Symptom Drug Enzyme Compound

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Query: EC:3.1.1.8 (cholinesterase)
12,691 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Adult, male rats (300-325 g) were treated with pyridostigmine bromide (n = 22) or saline (n = 22) to quantitate the effects of cholinesterase inhibition (64%) on the ability to work (9.14 m/min, level treadmill) in the heat (35 degrees C). Pyridostigmine-treated rats had a mean endurance of 23 min, whereas saline-treated animals ran for nearly 35 min (P less than 0.001). Rates of rectal and skin temperature increments were significantly higher (P less than 0.001) in pyridostigmine-treated rats as were water losses (P less than 0.001). Exercise in the heat to hyperthermic exhaustion effected anticipated increments in circulating urea nitrogen, creatinine, lactate dehydrogenase, and potassium levels, whereas pyridostigmine pretreatment had additive effects on lactate and creatine kinase concentrations. Additionally, pyridostigmine elicited a significant (P less than 0.01) hyperglycemia before exercise, an effect noted also with other organophosphate simulants. We concluded that pyridostigmine-induced cholinesterase inhibition had a variety of debilitating effects during work in the heat.
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PMID:Effects of pyridostigmine on ability of rats to work in the heat. 672 66

Diethyl 4-(benzothiazol-2-yl)benzylphosphonate (KB-944), a new Ca-antagonist, in the dose range of 25--200 mg/kg/day, was orally administered to Jcl:SD rats for five consecutive weeks and the following results were obtained. Neither death nor inhibition of body weight gain nor any toxic symptoms of the drug were noted in rats but an increase in water intake was found in the rats treated with over 100 mg/kg/day of KB-944. In plasma there was a decrease in alkaline phosphatase activity, creatinine level and cholinesterase activity and an increase in GPT activity and total cholesterol level in rats given a higher dosage of the drug. Weight gain of the liver, kidneys, heart, adrenals and ovaries, and degeneration in the epithelium of the renal proximal tubule were observed. However, none of these changes were serious and the maximum non-toxic dose of KB-944 was 25 mg/kg/day.
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PMID:1-month subacute oral toxicity study of KB-944, a new calcium antagonist, in rats. 689 Aug 29

This study analyzed the nutritional status of cancer patients in relation to type and site of origin of the tumor, stage of disease, and previous chemical or radiation therapy. The analysis was performed on 321 patients (280 with cancer and 41 controls). The nutritional parameters included per cent of weight loss, anthropometric indices (arm circumference, triceps skinfold, arm muscle circumference), creatinine-height index, serum protein, albumin, total iron binding capacity and cholinesterase, C3 and C4 components of complement, total peripheral lymphocytes, and skin tests. The statistical comparison between patients with different tumors and controls, between patients with different stages of the same tumor, and between patients treated with or without previous chemical or radiation therapy led to the following conclusions: 1) malnutrition is mainly related to the type and site of origin of the tumor and, in the early stages of disease, is more pronounced in patients with cancer of the esophagus and stomach; 2) except in patients with breast and cervix cancer, malnutrition gets more severe as the disease becomes advanced; 3) chemical or radiation therapy has a variable impact on the nutritional status, but in selected patients it causes a drop in body weight, arm circumference, arm muscle circumference, and peripheral lymphocytes; 4) body weight, cutaneous delayed hypersensitivity and serum albumin are the most commonly altered parameters.
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PMID:Impact of cancer, type, site, stage and treatment on the nutritional status of patients. 709 67

We studied the effects on 25 analytes of duration of contact of serum with non-anticoagulated blood and of temperature. Serum was separated after blood was allowed to stand, for 0, 2, 4, 6, 8, 24, or 48 h at 4, 23, or 30 degrees C. Results obtained for bilirubin, albumin, zinc sulfate turbidity, thymol turbidity, cholinesterase (EC 3.1.1.8), alkaline phosphatase (EC 3.1.3.1), leucine aminopeptidase (EC 3.4.11.1), amylase (EC 3.2.1.2), total cholesterol, triglycerides, beta-lipoprotein, serum urea nitrogen, creatinine, uric acid, and gamma-glutamyltransferase (EC 2.3.2.2) were not influenced by storage at 4, 24, or 30 degrees C for as long as 48 h. Negligible differences were seen for potassium in sera in contact with cells as long as 24 h at 23 degrees C and for inorganic phosphorus after 48 h at 4 degrees C. However, at 4 degrees C we noted an increase at 8 h, a slight decrease at 30 degrees C. Statistically significant changes were seen for total protein and calcium after 48 h at 30 degrees C; for aspartate aminotransferase (EC 2.6.1.1), and alanine aminotransferase (EC 2.6.1.2), between 8 and 24 h at 23 degrees C and as soon as 6 h at 30 degrees C; for lactate dehydrogenase (EC 1.1.1.27) after 8 h at 30 degrees C and between 8 and 24 h at 23 degrees C; for glucose at 24, 4, or 2 h of storage at 4, 23, or 30 degrees C, respectively; for inorganic phosphorus after 48 h at 23 degrees C or 8 h at 30 degrees C; for potassium after 4 h at 4 degrees C or 24 h at 30 degrees C; and for sodium after 48 h at 4 degrees C or 6 h at 23 or 30 degrees C.
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PMID:Serum-constituents analyses: effect of duration and temperature of storage of clotted blood. 744 20

The nutritional state of 309 geriatric patients in a medical clinic was determined with the following parameters: Weight/height index, triceps skin fold, arm muscle circumference, creatinine/height index, albumins, prealbumin, transferrin and cholinesterase. Using these parameters we found that 54,4% of these patients were suffering from malnutrition (27,8% marasmus, 9,4% kwashiorkor-like syndrome, 17,2% marasmic kwashiorkor). Triceps skin fold, arm muscle circumference and creatinine/height index were the most precise parameters to confirm marasmus. Prealbumin and cholinesterase are especially recommended to determine acute protein deficiency, albumin to confirm chronic protein deficiency. It was also possible to demonstrate the deleterious effect of malnutrition on the immunological system of the patient through determination of the absolute lymphocyte count in peripheral blood and intracutaneous testing with streptokinase-dornase, mumps skin test antigen and candida vaccine.
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PMID:[Malnutrition in old age - diagnosis and therapy]. 745 14

Age-related changes of 27 items in serum chemistry were investigated in Sprague-Dawley rats of both sexes from 6 to 30 weeks of age. The following 12 items were shown as an increase in those values during growth and maturity, i.e., total protein, albumin (female only), glucose, total cholesterol, triglyceride, phospholipid (female only), beta-lipoprotein, cholinesterase (female only), asparate aminotransferase (female only), creatinine, direct-bilirubin and total-bilirubin. However, the following 4 items decreased with aging, i.e., asparate aminotransferase, alkaline phosphatase, creatine phosphokinase and inorganic phosphorus. No age-related changes were found in the values for calcium, sodium and chloride in both sexes and for alanine aminotransferase, cholinesterase and albumin in males. The sex differences were shown in the following 12 items: higher values in males were alkaline phosphatase, creatinephosphokinase, glucose and inorganic phosphorus, and higher values in females were cholinesterase, albumin, phospholipid, non-esterified fatty acid, urea nitrogen, direct-bilirubin, total-bilirubin and serum iron. No sex-related differences were found in the values for calcium, sodium, chloride and total cholesterol.
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PMID:[Age-related changes and sex differences on the serum chemistry values in Sprague-Dawley rats--I. 6-30 weeks of age]. 749 31

Diurnal variations in 23 blood chemical items were investigated in Sprague-Dawley rats of both sexes at 6 weeks of age. Blood samples were obtained every two hours. One to three periodic components detected by the maximum entropy method from the observed time-series and the optimum fitting parameters were calculated by the least squares method. The fitting curves were compared with the observed data for the evaluation of systematic and fluctuating parts of the time domain as circadian variations. The periodic components were detected from all the blood chemical items examined. This suggests that all items have systematic parts as basic rhythmic changes. The optimum fitting curves corresponded to the observed time-series in the following items: glucose, total protein, A/G ratio, alkaline phosphatase, Na, K, Cl and BUN of both sexes and total cholesterol, triglyceride, cholinesterase, CPK, inorganic phosphorus, direct and total bilirubin, creatinine and uric acid in males. Others showed insufficient correspondence to many fluctuating parts. This randomness was more frequently seen in females than in males.
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PMID:Diurnal variations in blood chemical items in Sprague-Dawley rats. 755 24

Information on the stability of serum analytes during storage of serum or whole blood samples is often incomplete and sometimes contradictory. Using a widely available analyser (Hitachi 737/Boehringer), we therefore determined the effects of storage time and temperature on the measured concentrations of the following serum analytes: sodium, potassium, calcium, chloride, inorganic phosphate, magnesium, creatinine, urea, uric acid, bilirubin, cholesterol, HDL- and LDL-cholesterol, triacylglycerols, creatine kinase, aspartate aminotransferase, alanine aminotransferase, gamma-glutamyltransferase, alkaline phosphatase, alpha-amylase, lactate dehydrogenase and cholinesterase. When separated serum was stored at + 9 degrees C for seven days, the mean changes in inorganic phosphate and lactate dehydrogenase exceeded significantly (p < 0.05 or 0.001, respectively) the maximum allowable inaccuracy according to the Guidelines of the German Federal Medical Council; all other quantities were sufficiently stable. In serum at room temperature, inorganic phosphate, uric acid, HDL-cholesterol and triacylglycerols increased continuously, whereas bilirubin, LDL-cholesterol, creatine kinase and aspartate aminotransferase decreased more than the guidelines permit during the storage period (p < 0.05 for aspartate aminotransferase, p < 0.001 for the other analytes mentioned). In whole blood stored for 7 days at + 9 degrees C, only the following serum analytes satisfied the stability requirements of the guidelines: calcium, urea, cholesterol, HDL-cholesterol, LDL-cholesterol, triacylglycerols, creatine kinase, gamma-glutamyltransferase and cholinesterase. When stored at room temperature, only sodium, uric acid, bilirubin, cholesterol, triacylglycerols, aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, alpha-amylase and cholinesterase were still stable after 3 days. The data collected show that all quantities examined are sufficiently stable for four days in separated serum stored at + 9 degrees C.
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PMID:Storage of serum or whole blood samples? Effects of time and temperature on 22 serum analytes. 762 90

Fosinopril is distinguished from other ACE inhibitors by a pharmacokinetic pecularity in the sense that is can be metabolized either by liver or kidney. This was the rationale of the present research the aim of which was to verify if administered to patients with liver cirrhosis the drug was liable to alter global liver function and ability to metabolize drugs. Eight cirrhotic males, mean age 56 years, also suffering from high blood pressure, were studied. In these patients, liver and kidney function tests (BUN, creatinine blood level, serum and urinary electrolytes, creatinine clearance, calcium and phosphor blood level, transaminases, alkaline phosphatase prothrombin time, cholinesterase, gamma-glutamyl-transpeptidase) were carried out at baseline and after 30 days' fosinopril treatment (1 capsule every morning in the fasting state); in addition total functioning liver mass was assessed by the galactose test, and drug-metabolizing capacity by the antipyrine test. Treatment resulted in a significant improvement of pressure values in all patients (p < 0.01) and did not alter liver and kidney function parameters. Besides, no side effects were registered, especially no case of orthostatic hypotension. The antipyrine test was not influenced by fosinopril treatment. Therefore, short-term treatment with this ACE-inhibitor can be concluded to be effective and not to cause additional alterations of liver function in patients with liver cirrhosis.
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PMID:[Evaluation of the total hepatic function after treatment with fosinopril in hypertensive patients with liver cirrhosis]. 772 Mar 55

We have studied the effect of renal function on the pharmacodynamics of mivacurium. Sixty patients were allocated to three groups according to creatinine clearance: group C (control), creatinine clearance > 50 ml min-1; group P (preterminal renal failure), creatinine clearance < 50 ml min-1 > 20 ml min-1; group T(terminal renal failure), creatinine clearance < 20 ml min-1. Neuromuscular transmission (train-of-four) was monitored using electromyography from the hypothenar muscle with stimulation of the ulnar nerve. After an initial bolus, mivacurium was administered continuously to maintain a T1 of 5 (4)% of baseline. The dose of mivacurium necessary to maintain 95% neuromuscular block was similar in patients with normal renal function and patients with different levels of renal impairment. Recovery from neuromuscular block after ceasing mivacurium infusion was significantly prolonged in patients with preterminal renal impairment. There was a close correlation between mivacurium pharmacodynamics and pseudocholinesterase activity, but not creatinine clearance.
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PMID:Effect of renal function on neuromuscular block induced by continuous infusion of mivacurium. 773 67


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