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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Clinical & experimental allergy 11 (1981), S. 0 
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Three cases of bronchial asthma due to wood dust from Tanganyika anigré are reported. All patients were woodworkers and had symptoms of dyspnoea, cough and wheezing, and sometimes itchiness and rhinorrhoea, after exposure to Tanganyika aningré. The intradermal skin tests were positive for untigenic extract of Tanganyika aningré. In two patients the bronchial provocation test with the wood dust and with the soluble extract inhaled by aerosol was positive showing an immediate reaction; in the same patients bronchial hyperreactivity was also found. Atopy was present in one subject. No precipitins or specific IgE were found in patient sera by the immunodiffusion technique or by RAST.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Clinical & experimental allergy 14 (1984), S. 0 
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The outcome of the respiratory symptoms, pulmonary function tests and bronchial hyperresponsiveness was studied in forty-seven workers with respiratory disease due to toluene diisocyanate (TDI) (twenty-seven asthmatic and twenty non-asthmatic subjects) after about 2 years from the first examination. Eight of twelve asthmatic subjects who left the industry after the first examination complained at the follow-up of dyspnoea and wheezing, but pulmonary function tests were unchanged; bronchial hyperresponsiveness decreased in three, but most were still positive to challenge test with bethanechol at the follow-up. Fifteen subjects who continued their exposure to TDI showed at the follow-up a significant decrease of the spirometric parameters and an increase of the bronchial hyperresponsiveness, and symptoms of chronic bronchitis were more frequent at the second examination. Non-asthmatic subjects, both exposed and non-exposed to TDI at the second examination, showed a significant decrease of the pulmonary function tests but no relevant changes in bronchial hyperresponsiveness. Our data suggest that stopping occupational exposure to TDI frequently did not produce an improvement of the TDI bronchial asthma, and persistence of the occupational exposure causes a more rapid decline in the respiratory function.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Clinical & experimental allergy 13 (1983), S. 0 
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Sera of ninety-one workers with respiratory symptoms related to occupational exposure to toluene diisocyanate (TDI) were tested by a solid phase radioimmunoassay using polyvinyl plates, in an attempt to demonstrate specific IgG antibodies to a conjugate of TDI with human serum albumin (TDI-HSA). Different conjugates were prepared. In our radioimmunoassay a TDI-HSA 1600 (1600 μg TDI/ mg HSA), obtained at alkaline pH with borate buffer, was used; this conjugate was immunologically reactive and did not contain protein macro-aggregates.No difference in percent of binding of radiolabelled anti-human IgG to TDI-HSA coated on plastic plates was found between exposed workers (asthmatic and non-asthmatic) and fifteen normal subjects. This may suggest that either TDI-induced bronchial asthma is not mediated by IgG antibodies, or TDI-HSA conjugate is unsuitable to be detected by anti-isocyanate IgG.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0022-4731
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 0022-4731
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 18 (1962), S. 144-146 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Riassunto Gli autori hanno ottenuto in conigli un siero anti-TSH usando come antigene ormone bovino. Questo siero inibisce il TSH endogeno di ratti nutriti con dieta di Remington e trattati con tiouracile, impedendo cosi la formazione della iperplasia tiroidea. È stato anche osservato che il trattamento con siero anti-TSH mantiene normale il rapporto MIT/DIT cancellando le salienti alterazioni indotte dal trattamento con tiouracile.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 19 (1963), S. 15-17 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Riassunto Gli autori hanno studiato la funzione tiroidea in ratti trattati con soluzione idroalcoolica di Melatonina ed hanno osservato che negli animali così trattati il peso della ghandola, l'altezza delle cellule follicolari, e la captazione del radioiodio si riduceva. La Melatonina ha anche inibito la formazione della iperplasia tiroidea da tiouracile.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-1440
    Keywords: Thyroid hormones ; Thyrotropin ; Hypothyroidism ; Memory
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Frank hypothyroidism is known to induce neurological and mental dysfunction. The aim of this study was to assess selected neuropsychological and behavioral features by means of standardized tests in a group of 14 patients with subclinical hypothyroidism who were free from neuropsychological complaints and to evaluate the possible effects of l-thyroxine treatment on their performance. Patients were submitted to the Crown and Crisp Experiential Index and to the Wechsler Memory Scale; their ratings on the neurobehavioral tests and their thyroid hormone profile were compared to those of a control group of 50 age- and sex-matched subjects. Comparison was also carried out between pretreatment ratings and those obtained following a 6-month l-thyroxine course (0.1–0.15 mg/day). The Wechsler Memory Scale ratings showed a significant impairment in patients' memory-related abilities [memory quotient (MQ)=89.1 ± 2.9; P=0.002 (patients versus controls)]; the Crown and Crisp Experiential Index ratings demonstrated moderate differences between untreated patients and controls with respect to hysteria (P=0.03), anxiety (P=0.05), somatic complaints (P=0.0005), and depressive features (P=0.002) scales; the total score was also significantly higher (42.0±3.8; P=0.005). After l-thyroxine treatment the patients' performances showed an improvement in memory skills, as evaluated by the Wechsler Memory Scale [MQ = 99.9±4.0; P=0.002 (treated versus untreated)]; somatic complaints (P=0.02) and obsessionality (P = 0.04) ratings and the Crown and Crisp Experiential Index total score (P=0.04) significantly decreased with respect to untreated patients. The remarkable effects of l-thyroxine treatment observed in the present study indicate that patients with subclinical hypothyroidism may require early therapy to provide specific treatment for their neuropsychological alterations and to avoid progression toward frank hypothyroidism.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-2323
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé On a injecté de l'éthanol par voie percutanée (IEP) et sous échographie chez 25 patients ayant un nodule solitaire autonome de la thyroïde (15 non-toxiques, 10 toxiques), à raison de 4–7 séances (1–2 par semaine). Pour évaluer les doses nécessaires en fonction de la taille, les patients ayant un nodule plus petit (volume 〈15 mL) ont reçu 0.75–2.8 mL de'éthanol/mL de tissu nodulaire, alors que ceux porteurs de nodules de plus gros volume ont reçu un volume dose de 0.5 mL/mL. Hormis un cas d'hyperpyrexie transitoire, il n'a pas été observé d'effects secondaires notables. On a constaté une augmentation modérée, asymptomatique, des taux hormonaux sériques dans les deux groupes pendant le traitement. Trois mois aprés la fin du traitement, une rémission clinique et biologique a été observée chez 8 des 10 patients ayant un nodule toxique. Une augmentation significative des niveaux de TSH a été notée dans les deux groupes (p〈0.01). Une diminution significative du volume (p〈0.001), ainsi que des modifications structurales ont toujours été documentées par l'échographie. Une corrélation linéaire hautement significative a été retrouvée (r=0.98;p〈0.0001) entre le volume pré-opératoire et la réduction tumorale à la fois pour les grands et les petits nodules, suggèrant que même une injection limitée d'éthanol peut être thérapeutiquement efficace. La récupération d'une activité scintigraphique extranodulaire a été observee chez 16 des 25 patients (64%). Ces données confirment que l'IPE est un moyen efficace pour obtenir une “ablation fonctionnelle” de la thyroïde et induire une rémission d'hyperthyroide. Les effets secondaires apparaissent peu fréquents. Malgré la taille réduite des effectifs dans cette étude, il semble que la dose de 0.5–1 mL d'éthanol par mL de tissu soit aussi efficace qu'une dose plus importante.
    Abstract: Resumen Veinticinco pacientes con nodulos tiroideos solitarios autónomos (15 no tóxicos, 10 tóxicos) fueron tratados mediante inyección de etanol por vía percutánea (TIEP) bajo guía ultrasonigráfica en 4–7 sesiones (1–2 semanales). Con el objeto de probar diferentes dosis, los nódulos pequeños (volumen〈15 mL) fueron tratados con dosis de 0.75–2.8 mL etanol/mL de tejido nodular, en tanto que los nódulos mayores recibieron 0.5–1.0 mL. Aparte de un paciente que exhibió hiperpirexia transitoria, no se observaron efectos adversos. En el curso del tratamiento se registró una leve y asintomática elevación de los niveles séricos de hormona tiroidea en ambos grupos. A los tres meses de efectuado el tratamiento se comprobó remisión bioquímica y clínica del hipertiroidismo en 8 de 10 pacientes tóxicos, y elevación significativa de los niveles de TSH en ambos grupos (p〈0.01). En forma consistente la sonografía demostró reducción significativa del volumen (p〈0.0001) y alteraciones estructurales de los nódulos. Se encontró una relación linear entre el volumen de la masa anterior al tratamiento y la reducción, tanto para los nódulos grandes como para los pequeños, lo cual sugiere que aún las dosis limitadas de etanol poseen eficacia terapéutica. Se demostró recuperación de la actividad parenquimatosa extranodular en 16 de 25 pacientes (64%). Los datos confirman que el TIEP es efectivo para lograr la ablación funcional y la remisión del hipertiroidismo, cuando éste se encuentra presente; los efectos adversos son muy raros. A pesar de lo pequeno de la muestra de pacientes, parece que una dosis de 0.5–1.0 mL de etanol por cada mL de tejido es tan eficaz como las dosis mayores y que resulta apropiada para el tratamiento de los nódulos solitarios autónomos de la glándula tiroides.
    Notes: Abstract Twenty-five patients with solitary autonomous thyroid nodules (15 nontoxic, 10 toxic) received percutaneous ethanol injection treatment (PEIT) under sonographic guidance in 4–7 sessions (1–2 weekly). To test different doses, smaller nodules (volume 〈15 mL) were given 0.75–2.8 mL ethanol/mL nodular tissue while larger nodules received 0.5–1 mL/mL. Except for 1 patient who developed hyperpyrexia, no relevant adverse effects were observed. A slight, asymptomatic increase in serum thyroid hormone levels was observed in both groups during the treatment. Three months after treatment, a biochemical and clinical remission of hyperthyroidism was observed in 8 of 10 patients with toxic nodules. A significant increase of TSH level was seen in both groups (p〈0.01). Significant shrinkage of volume (p〈0.001) as well as structural alternations of nodules were consistently recorded at sonography. A linear relationship (r=0.98;p〈0.0001) between pretreatment volume and volume reduction was found both for large and small nodules, thus suggesting that even limited ethanol doses may be therapeutically effective. A recovery of extranodular parenchyma activity at scintiscan occurred in 16 (64%) of 25 patients. These data confirm that PEIT is effective in obtaining functional ablation and in inducing remission of hyperthyroidism. Adverse effects are infrequent. In spite of the small patient sample, a 0.5–1 mL ethanol dose per each mL of tissue appears as effective as larger doses and seems appropriate for treatment.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1432-1246
    Keywords: Toluene ; Xylene ; Styrene ; Hippuric acid ; m-Methylhippuric acid ; Phenylglyoxylic acid ; Mandelic acid ; Urinary metabolites
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A new high-pressure liquid chromatography (HPLC) method for simultaneous quantitative determination of the urinary metabolites of toluene, m-xylene, and styrene (hippuric acid, m-methylhippuric acid, phenylglyoxylic acid, mandelic acid) is described. The extraction procedure was performed on acidified urines, after addition of 4-hydroxybenzoic acid as internal standard, using a butylchloride/isopropanol mixture and drying 0.5 ml of the organic layer under nitrogen flow. The residue obtained was dissolved in 0.1 ml water/acetonitrile and 5 μl were injected into an HPLC apparatus equipped with a 0.26 × 25 cm HC ODS SIL X column. Absorbance measures were performed at 225 nm throughout the investigation. All metabolites were clearly separated in a short time (12 min) and the amounts of other urinary compounds affecting the analysis were so small that the measurement of low concentrations of the urinary metabolites could be easily performed. Linear calibration curves were obtained from 0.1 to 3 mg/ml and a correlation coefficient greater than 0.99 was found between concentrations of the standards and areas of the peaks. Statistical analysis confirms that this method, which has a high reproducibility, is simple, reliable, and useful for the biologic monitoring of industrial exposure to aromatic compounds.
    Type of Medium: Electronic Resource
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