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Query: UMLS:C0004134 (ataxia)
 15,886 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The effects of Pearl millet, fermented millet, or processed fermented millet were investigated in 15 goats assigned as untreated controls, Pearl millet-fed (166.6g/animal/d), fermented millet-fed (166.6 g/animal/d or 83.3g/animal/d), and processed fermented millet-fed (166.6g/ animal/d). Pearl millet caused goiter within 72-108 d, and changes in thyroid follicles were correlated with clinical manifestations and alterations in serum and tissue iodine and selenium concentrations. Neither fermented nor processed fermented millet produced goiter, but their toxicity was characterized by ruminal bloat, dyspnea, diarrhea, ataxia, and enterohepatonephrotoxicity with death within 5-15 d. Organ lesions correlated with changes in serum enzymes and other serum constituents, hematology, and tissue and serum iodine and selenium concentrations.
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PMID:Effects of pearl millet (Pennisetum typhoides), and fermented and processed fermented millet on Nubian goats. 1083 14

Ciguatera is the most frequently observed form of tropical fish poisoning. It appears as a syndrome associating general signs, gastrointestinal, cardiac and neurological problems. Peripheral and central nervous system signs may be observed. We report a case of a 60-year-old man who developed Ciguatera poisoning with diarrhea, facial paresthesia, myalgia, cramps and weakness. Physical examination revealed a motor distal deficit of the four limbs, myokymia and ataxia. EMG testing was in favor of an axonal neuropathy. Neurologic symptoms persisted for two months. This case illustrates a new pathophysiological mechanism of neuropathy: "axonal channelopathy. Abnormalities of peripheral nerve sodium and potassium channels result in clinical and electrophysiological manifestations unrelated to axonal degeneration or demyelinization. The ciguatoxin mainly acts on sodium channels. Prolonged sodium channel activation results in repetitive axon firing. Recently ciguatoxin was recently demonstrated to have a novel action, blocking the sodium channel leading to slowed nerve conduction and decreased motor and sensory action potential amplitudes.
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PMID:[Ciguatera and peripheral neuropathy: a case report]. 1084 72

The effect of oral administration of 0.25 g/kg/day of Citrullus colocynthis fruits, 0.25 g/kg/day of Rhazya stricta leaves or mixture of the two plants at 0.25 g/kg/day of C. colocynthis fruits plus 0.25 g/kg/day of R. stricta leaves in Najdi sheep was examined. Oral administration of 0.25 g/kg/day of C. colocynthis fruits or 0.25 g/kg/day of R. stricta leaves for 42 days proved not fatal but that of the mixture of the two plants (0.25 g + 0.25 g/kg/day) proved fatal within 26 days with profuse diarrhea, dehydration, loss in condition, ataxia and recumbency, prior to death. These manifestations accompanied by enterohepatonephrotoxicity, gelatinization of the renal and epicardial fat and transudate in serous cavities were correlated with alterations in serum LDH and AST activities and concentrations of total protein, albumin, globulin, bilirubin, cholesterol and urea and hematology.
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PMID:Effect of combined Citrullus colocynthis and Rhazya stricta use in Najdi sheep. 1115 52

Susceptibility of sheep to oral administration of Citrullus colocynthis fruits, Nerium oleander leaves or their mixture is described in 12 sheep assigned as untreated controls, C. colocynthis-treated at 0.25g/kg/day, N. oleander-treated at 0.25g/kg and plant mixture-treated at 0.25g of C. colocynthis/kg plus 0.25g of N. oleander/kg. The daily use of 0.25g of C. colocynthis/kg for 42 days was not fatal to sheep and caused slight diarrhoea, catarrhal enteritis, centrilobular hepatocellular fatty change and degeneration of the renal tubular cells. Single oral doses of 0.25g of N. oleander/kg were lethal to sheep within 18-24h and caused uneasiness, grinding of the teeth, dyspnoea, anorexia, frequent urination, ruminal bloat, ataxia and recumbency before death. The main lesions were widespread congestion and haemorrhage, pulmonary cyanosis and emphysema and severe hepatonephropathy. Rapid death was also observed in sheep receiving single doses of the mixture of the two plants. Effects were correlated with changes in the activities of serum lactic dehydrogenase (LDH) and aspartate transaminase (AST) and concentrations of cholesterol, bilirubin, total protein, albumin, globulin and urea and haematological parameters.
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PMID:Response of Najdi sheep to oral administration of Citrullus colocynthis fruits, Nerium oleander leaves or their mixture. 1132 8

Celiac disease is much common than previously thought with a prevalence of 1/300, but most of cases are poorly symptomatic or silent. Fewer of half of patients report diarrhoea as a presenting symptom. In adults, the diagnosis should be considered, in case of isolated iron deficiency anaemia, neurological symptoms (ataxia, epilepsy), osteoporosis and arthralgia, infertility, dermatitis herpetiformis and abnormalities in liver tests. Characteristic histological features are total or subtotal villous atrophy associated with an increased number of intraepithelial lymphocytes. The most sensitive and specific circulating antibodies for the diagnosis are endomysial and transglutaminase IgA antibodies. The treatment of celiac disease requires a strict gluten free diet, but the observance to this diet is often difficult. In patients refractory to a strict gluten free diet, serious complications such as intestinal lymphoma or refractory sprue should be considered.
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PMID:[Adult celiac disease]. 1145 9

In this report, we describe the biological and molecular characterization of a paramyxovirus type-1 (PPMV-1) isolate found in wild pigeons in an urban habitat in Buenos Aires, Argentina. Of the nine pigeons captured, three were moribund, and the other six showed diarrhea, ataxia, tremor, torticolis, and wing paralysis. The intracerebral pathogenicity index was 1.29, and the amino acid (aa) sequence at the fusion protein cleavage site was 112GRQ KRF117. These characteristics correspond to a virulent Newcastle disease virus isolate. Nevertheless, it was not possible to reproduce the disease in chickens experimentally although the chickens exhibited seroconversion after inoculation. On the other hand, pigeons inoculated with the isolate became sick. These results provide further evidence about the unusual pathogenicity of PPMV-1 for chickens and show once more the need for more biological determinations in these cases to arrive at a final conclusion.
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PMID:Biological and molecular characterization of a pigeon paramyxovirus type-1 isolate found in Argentina. 1156 28

Alprazolam is a benzodiazepine anti-anxiety agent that acts at the limbic, thalamic, and hypothalamic level of the CNS and has anxioytic. sedative, hypnotic, skeletal muscle relaxant, and anticonvulsant properties. A retrospective study was conducted of 415 alprazolam ingestions in dogs reported to the ASPCA Animal Poison Control Center between January 1998 and August 2000: 238 suspected alprazolam toxicoses in dogs were evaluated. Clinical signs were ataxia/disorientation, depression, hyperactivity, vomiting, weakness, tremors, vocalization, tachycardia, tachypnea, hypothermia, diarrhea, and increased salivation that developed within 10-30 min post-ingestion. Treatment included standard decontamination procedures, such as emesis and activated charcoal: the specific benzodiazepine antagonist, flumazenil, may be used for severe CNS depression.
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PMID:Accidental ingestion of alprazolam in 415 dogs. 1182 68

[carisoprodol structure: see text] Carisoprodol is a widely used skeletal muscle relaxant and analgesic and is available as a prescription drug. Comparative studies were conducted to determine the toxicity of carisoprodol administered in corn oil and in 0.5% methylcellulose by gavage. Carisoprodol plasma concentrations of rats and mice were measured at the end of the 13-week studies; single-dose plasma carisoprodol analyses were also performed. Genetic toxicity studies were conducted in Salmonella typhimurium, L5178Y mouse lymphoma cells, cultured Chinese hamster ovary cells, and peripheral blood erythrocytes of mice. Groups of 10 male and 10 female F344/N rats received 0, 100, 200, 400, 800, or 1,600 mg carisoprodol per kilogram body weight in corn oil by gavage or 0, 100, 200, 400, or 800 mg/kg carisoprodol in 0.5% methylcellulose by gavage for 13 weeks. Groups of 10 male and 10 female B6C3F1 mice received 0, 75, 150, 300, 600, or 1,200 mg/kg carisoprodol in corn oil by gavage or 0, 600, 1,200, or 1,600 mg/kg carisoprodol in 0.5% methylcellulose by gavage for 13 weeks. Among rats that received carisoprodol in corn oil, survival was similar to that of the vehicle controls. Survival of rats administered carisoprodol in 0.5% methylcellulose was also similar to that of the vehicle controls after adjustment for deaths (two males and one female in the 800 mg/kg group and two females in the 400 mg/kg group). The final mean body weight gain of males administered 1,600 mg/kg carisoprodol in corn oil was significantly less than that of the vehicle controls; the final mean body weights and body weight gains of female rats in the 800 and 1,600 mg/kg groups were significantly greater. In the carisoprodol in 0.5% methylcellulose study, males in the 200 mg/kg group and females in the 100 and 800 mg/kg groups had significantly greater mean body weights and body weight gains than did the vehicle controls. Clinical findings in rats administered carisoprodol in corn oil or in 0.5% methylcellulose included lethargy, ataxia, diarrhea, and prostration; the incidences were dose-related, and females were more sensitive than males to the effects of carisoprodol. In the carisoprodol in corn oil study, differences in hematology and clinical chemistry parameters occurred with no consistent patterns. The effects of carisoprodol in 0.5% methylcellulose on hematology and clinical chemistry parameters were not studied. In the corn oil study, the kidney and liver weights of male and female rats administered 200 mg/kg carisoprodol or greater were generally significantly greater than those of the vehicle controls. In the 0.5% methylcellulose study, liver weights were significantly greater in male rats administered 400 or 800 mg/kg and in female rats administered 800 mg/kg carisoprodol compared to the vehicle controls; however, a consistent effect on the kidney weights was not observed. Nephropathy was observed in male rats administered 400 mg/kg carisoprodol or greater in corn oil; the livers of four males in the 1,600 mg/kg group had centrilobular hypertrophy of hepatocytes. No lesions were observed histopathologically in female rats administered carisoprodol in corn oil. In the carisoprodol in 0.5% methylcellulose study, the severity of nephropathy in males administered 200 mg/kg or greater was enhanced, and the incidence of nephropathy in female rats in the 800 mg/kg group was slightly greater than that in the vehicle controls. Plasma carisoprodol concentrations at the end of 13 weeks generally increased with increasing dose in rats administered carisoprodol in corn oil or in 0.5% methylcellulose. The plasma carisoprodol concentrations in rats administered a single gavage dose of carisoprodol in corn oil also increased with increasing dose. In the carisoprodol in corn oil mouse study, two females each in the vehicle control and 75 mg/kg groups and one female each in the 150 and 600 mg/kg groups were accidentally killed; all males survived to the end of the study. One male and one female administered 1,600 mg/kg carisoprodol in 0.5% methylcellulose died; seven mice were accidentally killed. The mean body weights and body weight gains of mice administered carisoprodol in corn oil were generally similar to those of the vehicle controls. The final mean body weights and body weight gains of all groups of males and females administered carisoprodol in 0.5% methylcellulose were significantly less. Clinical findings in the carisoprodol in corn oil study included lethargy, ataxia, tremors, and prostration in male and female mice. Ataxia, lethargy, convulsions, and prostration were observed in all dosed groups of males and females administered carisoprodol in 0.5% methylcellulose. In the carisoprodol in corn oil study, liver weights were significantly greater in males administered 300 mg/kg or greater and in females administered 150 mg/kg or greater than in the vehicle controls. In the carisoprodol in corn oil study, no gross or microscopic lesions were considered related to carisoprodol administration. Minimal to mild centrilobular hypertrophy was observed in the liver of all dosed groups of males and in females in the 1,200 and 1,600 mg/kg groups in the carisoprodol in 0.5% methylcellulose study. The testis weights of males administered 1,200 mg/kg carisoprodol in corn oil were significantly less than those of the vehicle controls; the sperm motility of males in this group was also significantly less than that of the vehicle controls. There were no significant differences in vaginal cytology parameters between dosed and vehicle control females. At the end of the carisoprodol in corn oil study, the concentration of carisoprodol was above the limit of detection in the plasma of only one male mouse each in the 300 and 1,200 mg/kg groups and in four females in the 1,200 mg/kg group. In mice administered a single gavage dose of carisoprodol in corn oil, plasma concentrations increased with increasing dose; peak plasma concentrations occurred at 20 to 120 minutes in males and 60 to 120 minutes in females. In the carisoprodol in 0.5% methylcellulose study, plasma carisoprodol concentrations of female, but not male, mice increased with increasing dose; peak plasma carisoprodol concentrations occurred at 30 minutes postdosing in all groups of males and females. Results of proportionality and bioavailability studies indicated that single gavage doses of 200 to 800 mg/kg carisoprodol in 0.5% methylcellulose in rats or 300 to 1,200 mg/kg in mice were dose proportional; absolute bioavailability values increased with increasing dose, ranging from 15% to 32% for rats and from 18% to 38% for mice. For rats, the bioavailability of carisoprodol in 0.5% methylcellulose was approximately fivefold that of carisoprodol in corn oil; the Cmax values of the dose in 0.5% methylcellulose were approximately threefold those of the dose in corn oil. For mice, no significant difference was observed in the bioavailability of carisoprodol between the vehicles; however, the Cmax values of the dose in 0.5% methylcellulose were 1.5 to 1.75 times those of the dose in corn oil. Carisoprodol was not mutagenic in any of four strains of Salmonella typhimurium, with or without S9 metabolic activation. It did induce mutations in L5178Y mouse lymphoma cells in the absence of S9; with S9, no mutagenic activity was noted in this assay. Results of the sister chromatid exchange test with carisoprodol in cultured Chinese hamster ovary cells were considered equivocal with and without S9. Chromosomal aberrations in cultured Chinese hamster ovary cells were clearly increased by carisoprodol treatment, particularly in the presence of S9. No significant increases in the frequency of micronucleated erythrocytes were observed in peripheral blood samples from male and female mice administered carisoprodol by gavage for 13 weeks. In conclusion, carisoprodol induced ataxia and prostration in rats and mice, increases in liver weights in rats and mice, and nephropathy in male rats. The bioavailability of carisoprodol in 5% methylcellulose was greater than in corn oil. The no-observed-adverse-effect (NOAEL) level of carisoprodol administered in corn oil or in 0.5% methylcellulose was determined to be 100 mg/kg, compared to the clinical dose of 20 mg/kg per day for adults and 5 to 7.5 mg/kg per day for children.
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PMID:NTP toxicity studies of carisoprodol (CAS No. 78-44-4) administered by Gavage to F344/N rats and B6C3F1 mice. 1198 79

Ethylmalonic encephalopathy (EE) is a rare metabolic disorder with an autosomal recessive mode of inheritance that is clinically characterized by neuromotor delay, hyperlactic acidemia, recurrent petechiae, orthostatic acrocyanosis, and chronic diarrhea. Increased urinary levels of ethylmalonic acid and methylsuccinic acid are the main biochemical features of the disorder. We report on two patients affected by EE who showed different clinical and neuroradiological patterns. Patient 1 presented with a chronic clinical course characterized by very slow neuromotor deterioration, ataxia, and dysarthria. In contrast, patient 2 had an acute neonatal onset with severe neuromotor retardation, severe generalized hypotonia, and intractable seizures. Neuroradiological follow-up of patient 1 detected a diffuse hyperintensity on the T2 images at the basal ganglia which remained stable during a period of four years. Patient 2, in contrast, showed a rapid process of cerebral, and in part, cerebellar atrophy. On the basis of our observations, we reviewed the data published in the literature and tried to delineate the natural history of EE, which appears to be characterized by a wide spectrum of severity in the clinical course. No reports on neuroradiological follow-up of EE patients are available in the literature with which to compare our data. Finally, both patients showed a muscle COX deficiency. The pathogenetic implications of such a biochemical finding will be also discussed.
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PMID:Ethylmalonic encephalopathy: further clinical and neuroradiological characterization. 1238 64

Cerebrotendinous xanthomatosis (CTX) is a rare autosomal recessive disorder of bile acid synthesis which can be clinically diagnosed and specifically treated. It is an underdiagnosed disorder worldwide.Here,we describe two women who were diagnosed with CTX during their forties after symptoms had already developed 15 years earlier. Both patients showed gait ataxia, spastic paraparesis, polyneuropathy, bilateral premature cataracts, tendon xanthomas, and cognitive deficits. One of the patients had also chronic diarrhea. The deficiency of the mitochondrial enzyme sterol 27-hydroxylase results in a virtual absence of chenodeoxycholic acid. This leads to excessive production of cholestanol and cholesterol and accumulation of these sterols in many tissues, especially the eye lens, central nervous system,and tendons. The determination of a high cholestanol serum level allows the diagnosis,which can be confirmed through genetic analysis. Early diagnosis of CTX is important, since an effective therapy is available. Long-term therapy with chenodeoxycholic acid is effective for CTX, mainly in prevention of further deterioration.
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PMID:[Cerebrotendinous xanthomatosis, a treatable metabolic disorder]. 1525 83


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