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)

Intermittent hyperthyreosis occurs under various forms of stress, especially heat stress. The clinician may diagnose such cases as masked or apathetic hyperthyroidism or "forme fruste" hyperthyreosis or thyroid autonomy. As most routine and standard tests may here yield inconsistent results, it is the patients' anamnesis which may provide the clue. Our Bioclimatology Unit has now seen over 100 cases in which thyroid hypersensitivity towards heat was the most prominent syndrome: 10-15% of weather-sensitive patients are affected. The patients complain before or during heat spells of such contradictory symptoms as insomnia, irritability, tension, tachycardia, palpitations, precordial pain, dyspnoe, flushes with sweating or chills, tremor, abdominal pain or diarrhea, polyuria or pollakisuria, weight loss in spite of ravenous appetite, fatigue, exhaustion, depression, adynamia, lack of concentration and confusion. Determination of urinary neurohormones allows a differential diagnosis, intermittent hyperthyreosis being characterized by three cardinal symptoms: 1. tachycardia -- every case with more than 80 pulse beats being suspect (not specific); 2. urinary histamine -- every case excreting more than 90 mug/day being suspect. Again the drawback of this test is its lack of specificity, as histamine may also be increased in cases of allergy and spondylitis; 3. urinary thyroxine -- every case excreting more than 20 mug/day T-4 being suspect. This is the only specific test. Therapy should make use of lithium carbonate and beta-blockers. Propyl thiouracil is rarely required.
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PMID:Intermittent hyperthyreosis -- a heat stress syndrome. 5 84

Lithium intoxication was induced in rats by intraperitoneal administration of lithium chloride in a daily dose of 200 mg/kg (0.22 LD50) for 6 days. Polyuria connected with pathological changes in the epithelium of the convoluted tubules and depression of the antidiuretic hormone--acid mucopolysaccharides system in the area of the straight kidney tubules was observed on the 6th day of the experiments. Oligouria and death of some of the animals on the 7th experimental day was caused by severe lesions the kidney structure. Further observation (30 days) demonstrated that, along with the regeneration processes, there developed a marked sclerosing ofthe kidney tissue. A conclusion was drawn that severe lithium intoxication was associated with the development of acute renal insufficiency. Functional reserves of the kidneys after the cessation of lithium chloride administration remained lowered for a long period.
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PMID:[Role of the kidneys in the pathogenesis of lithium poisoning]. 13 80

An outbreak of chronic liver disease was investigated in a kennel of dogs. Anorexia, depression, polyuria, polydipsia, icterus and a terminal hemorrhagic diathesis were noted in clinically affected dogs. Thrombocytopenia, hypofibrinogenemia, elevated fibrinogen degradation products and prolonged activated partial thrombosplastin times (PTT) and one-stage prothrombin times (PT) were associated with the hemorrhagic crisis. Aflatoxicosis was confirmed by the presence of significant levels of aflatoxicosis was confirmed by the presence of significant levels of aflatoxin B in the commercial dog food being fed. A subacute hepatitis was found on necropsy. Disseminated intravascular coagulation was suspected as the cause of the hemorrhage in these cases and treatment was instituted.
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PMID:Disseminated intravascular coagulation complicating aflatoxicosis in dogs. 55 87

Primary hyperparathyroidism (PHPT) was the most likely diagnosis in 68 non-thiazide-treated patients with hypercalcaemia detected in a health screening. The group comprised 55 females and 13 males, with a mean age of 55.0 +/- 0.7 (S.E.M.) years. On a pair basis these patients (the observation group) were compared with a series of 68 age- and sex-matched normocalcaemic subjects (the control group) selected from the health screening register. Renal calcui and reduced creatinine clearance were encountered less frequently in the observation group than in many reports of hospitalized patients with PHPT. Compared with the control group, the observation group comprised a greater number of subjects with renal calculi (usually multiple and bilateral), constipation, mental depression and reduced creatinine clearance. The ECG Q-T interval was shorter in the observation group than in the control group. No differences were found with respect to the occurrence of gastritis and/or peptic ulcer, poly-dipsia, polyuria and general muscle weakness. On the basis of this and a previous study it was concluded that at least 3% of the 15903 subjects participating in the health screening suffered from "asymptomatic" hypercalcaemia and most probably from "asymptomatic" PHPT.
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PMID:Clinical and laboratory findings in subjects with hypercalcaemia. A study including cases with primary hyperparathyroidism detected in a health screening. 98 6

Test staged on rats have brought evidence that lithium chloride acts damagingly on all parts of the nephron, inhibiting, first of all, the processes of filtration and then of secretion and reabsorption. Polyuria arising under the effect of lithium is caused by reduced reabsorption of water in the tubules and anuria--by depression of the glomerular filtration.
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PMID:[Effect of lithium chloride on kidney function in rats]. 102 8

Congenital urinary tract obstruction is a common cause of renal failure accounting for up to 20% of end-stage renal disease cases. Intrauterine obstruction often results in parenchymal loss and renal dysfunction. The pathophysiology of obstructive nephropathy and its further depression of renal function is related to severe renal vasoconstriction, which is in large part angiotensin mediated. Signs suggestive of urinary obstruction in the newborn may include an abdominal mass, hypertension, oligoanuria/polyuria, urosepsis, and hyperchloremic acidosis. The combination of renal ultrasound, diuretic renal scans, and voiding cystourethrogram are the main diagnostic modalities in infants with hydronephrosis. Nonsurgical management of ureteropelvic junction obstruction has become more popular, particularly in mild to moderate cases. Early fulguration or bypassing the obstruction of urethral valves is essential and a decrease in serum creatinine to below 1 mg/dL within 1 month of relief of obstruction is a favorable prognostic sign. Obstruction complicated by infection is dangerous and requires prompt intervention. Any newborn with a urinary tract infection, regardless of sex, should be presumed to have urinary obstruction or reflux until proven otherwise.
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PMID:Urinary tract obstruction and infection in the neonate. 157 69

Acrylonitrile (VCN) is an aliphatic nitrile which is used extensively in manufacturing of synthetic fibers, plastics, and rubber. Although the neurotoxicity of VCN is recognized, no thorough characterization of this effect has been reported. Current studies were designed to quantitatively characterize the acute phase of VCN-induced cholinomimetic neurotoxicity, and to determine the effects of dose, route of administration, and atropine on such toxicity. Administration of a single gavage or subcutaneous doses of 20, 40, or 80 mg VCN/kg to male Sprague-Dawley rats causes two distinctive phases of acute neurotoxic effects. Signs observed in the early phase had a rapid onset, and were cholinomimetic in nature. They included salivation, lacrimation, chromodacryorrhea, polyuria, miosis, vasodilatation in face, ears and extremities, increased gastric secretion, and diarrhea. A late phase developed hours after VCN dosing, and the toxic signs included depression, convulsions, and respiratory failure followed by death at high doses. These results revealed that the cholinomimetic toxicity induced by VCN was dose related regardless of the route of administration. In another study, rats were pretreated with atropine (1 mg/kg, IP) prior to VCN (40 mg/kg) in order to investigate the role of the cholinergic system. Atropine protected rats against VCN-induced cholinomimetic neurotoxicity, suggesting possible involvement of the cholinergic system. Finally, this work provides essential basic information for studying the biochemical, pharmacological, and neurological basis of VCN-induced neurotoxicity in the rat.
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PMID:Assessment of the acute acrylonitrile-induced neurotoxicity in rats. 175 2

Numerous surveys conducted in North America, Asia and Europe have revealed that ochratoxin A is a natural contaminant of plant products. Contamination frequencies of up to 40% have been encountered, at levels in the range of 5-500 micrograms/kg. Ochratoxin A is a major causal determinant of the disease porcine nephropathy; but other nephrotoxic mycotoxins, such as citrinin and the fungal quinones, may be involved. The disease is characterized clinically by polyuria and growth depression. Renal lesions in pigs include degeneration of the proximal tubules, interstitial fibrosis and hyalinization of the glomeruli. The disease is endemic, outbreaks being associated with bad weather conditions. A positive correlation has been observed between the prevalence rates of porcine nephropathy and the frequency of ochratoxin A in corresponding feed samples. Surveys for residues of ochratoxin A in kidneys from cases of porcine nephropathy in a number of European countries other than Denmark have demonstrated that 21-42% of samples contain ochratoxin A in the range of 1-100 micrograms/kg.
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PMID:Porcine nephropathy in Europe. 182 Mar 53

A 38-year-old male developed acute oliguric renal failure following repeated glue sniffing for about 8 hours. In addition, he had severe liver cell injury, mild myonecrosis and bone marrow depression indicating generalized tissue toxicity. The high urinary spot sodium during the oliguric phase and the total renal functional recovery after a period of oliguria followed by polyuria favoured a diagnosis of acute toxic tubular necrosis causing acute renal failure. Toluene which is used as the solvent is presumably the toxic agent involved in glue sniffing. It is advised that toluene inhalation be considered in the differential diagnosis of acute renal failure especially in the young. Literature on the renal toxicity of toluene is briefly reviewed.
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PMID:Oliguric acute renal failure due to glue-sniffing. Case report. 194 58

Li inhibition of noradrenergic adenylate cyclase may be due to inhibition by Li of agonist-induced increases in GTP binding to G-protein. Such inhibition by Li of G-protein function could have effects on phosphatidyl-inositol-mediated second messenger systems as well as on cyclic AMP-mediated systems. However, Sherman, Berridge and others have proposed that Li affects phosphatidylinositol metabolism by inhibiting inositol-1-phosphatase. We recently have been able to measure inositol-1-phosphatase in human red blood cells. Preliminary data on patients treated with Li compared with controls suggests that the enzyme is indeed inhibited in vivo in patients undergoing Li treatment. However, a series of experiments in rats on addition of inositol to Li treatment did not find that inositol could reverse Li effects. Chronic oral high dose inositol does not reverse Li-induced polyuria (measured by polydipsia), Li-induced weight loss or Li-induced depression of exploratory behavior. These results suggest that Li inhibition of inositol-1-phosphatase indeed occurs in vivo. However, the physiological significance of inositol-1-phosphatase inhibition is not yet established.
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PMID:Role of inositol-1-phosphatase inhibition in the mechanism of action of lithium. 215 51


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