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  • 1
    Electronic Resource
    Electronic Resource
    Unoccupied electronic structure of phthalocyanine films (1990)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 93 (1990), S. 6859-6864 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The unoccupied molecular orbitals of metal-free phthalocyanine (H2PC), nickel-phthalocyanine (NiPC), and copper-phthalocyanine (CuPC) adsorbed on single crystal surfaces have been studied by inverse photoemission spectroscopy (IPES) and near-edge x-ray absorption spectroscopy (NEXAFS). The features observed in the experimental data are assigned by reference to molecular orbital calculations. Carbon and nitrogen 1s NEXAFS measurements of NiPC adsorbed on Cu(110) surface indicates that the phthalocyanine molecular planes are parallel to the surface. X-ray absorption data recorded at the Ni LIII and LII edges show that the unoccupied Ni 3d level is located in the plane of the phthalocyanine rings.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.458918
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  • 2
    Electronic Resource
    Electronic Resource
    Platinum in the environment: frequency of reactions to platinum-group elements in patients with dermatitis and urticaria (2000)
    Copenhagen : Munksgaard International Publishers
    Contact dermatitis 43 (2000), S. 0 
    Details
    ISSN: 1600-0536
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The aim of the present paper is to evaluate whether increasing environmental exposure increases the frequency of the positive prick and patch test reactions to certain chlorinated platinum salts in patients with dermatitis and urticaria. 800 consecutive subjects with contact dermatitis (n=749) and urticaria (n=51) were variously patch and prick tested with 30 haptens of a standard series, with aqueous solutions of, respectively, hexachloroplatinic acid (H2[PtCl6]), potassium tetrachloroplatinate (K2[PtCl4]), sodium hexachloroplatinate (Na2[PtCl6]), iridium chloride (IrCl3), rhodium chloride (RhCl3) and palladium chloride (PdCl2), and with 16 common inhalants. 153 workers, variably exposed in a platinum refinery, were patch and prick tested only with solutions containing platinum-group elements at various concentrations and with 16 common inhalants. Platinum-group elements did not elicit positive patch or prick test reactions in non-occupationally exposed subjects. In contrast, in exposed workers, positive patch test reactions at day 2 and at 25 min, respectively, were found in 2 subjects with hand dermatitis and in 2 with urticaria and asthma. 22 out of the 153 workers, 18 of whom had rhinitis, asthma, and urticaria, gave positive prick test reactions to 1 or more salts. Furthermore, on patch and prick testing, 4 cross-reactions between platinum, palladium, iridium and rhodium were demonstrated. In conclusion, the test results demonstrate that the present concentration in the environment does not increase the incidence of reactions to platinum salts in patients with dermatitis and/or urticaria. However, if the average level of environmental platinum exposure approaches those existing in industrial settings in the future, we are going to observe more frequent health effects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1034/j.1600-0536.2000.043006333.x
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  • 3
    Electronic Resource
    Electronic Resource
    Cutaneous response to irritants (2003)
    Oxford, UK : Munksgaard International Publishers
    Contact dermatitis 48 (2003), S. 0 
    Details
    ISSN: 1600-0536
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: We evaluated the role of pre-existing dermatitis in the response to irritants by patch testing the skin of 40 healthy volunteers and the uninvolved skin of 480 subjects for 2 days. These latter were affected by active atopic dermatitis, psoriasis, eczema with positive and negative patch test reactions, urticaria and generalized pruritus. A first panel containing 15 µL of aq. solutions of disodium laureth sulfosuccinate (NaLSS) 5% and 10%, potassium cocoate (KCC) 5%, potassium oleate (KOL) 5%, zinc coleth sulphate (ZnCS) 5%, sodium mireth sulphate (NaMS) 5%, sodium cocoamphoacetate (NaCCAA) 3% and 5%, was simultaneously applied to 1 site on the upper back. The results, scored by visual assessment, were compared to those observed when testing on the opposite side a second panel containing 15 µL of aq. solutions of 3 well-known irritants, benzalkonium chloride (BAK) 1%, sodium lauryl sulphate (SLS) 1%, and dimethylsulphoxide (DMSO) 10%. Whilst the substances of the first panel and DMSO gave, on the whole, a scarce number of positive responses in all the tested groups, more evident differences in number, percent and mean intensity of the positive responses to BAK and SLS were found between the different groups. Although some of them seemed statistically significant, when the same values were evaluated by means of χ2 and Student t-test, they did not differ in a statistically significant way from the values found in healthy subjects. The results of this study seem to indicate that the substances of the first panel have a chemical structure that makes them quite safe in real-life conditions. In contrast, BAK and SLS have chemical properties that condition the number and intensity of the responses, making the role exerted by the pre-existing dermatosis quite marginal. In particular, there is no proof that the healthy skin of active atopic subjects is the most susceptible to the irritating effects of the tested substances.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1034/j.1600-0536.2003.480203.x
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  • 4
    Electronic Resource
    Electronic Resource
    HLA class I residue mismatch and renal graft outcome (2000)
    Springer
    Transplant international 13 (2000), S. S444 
    Details
    ISSN: 1432-2277
    Keywords: Key words HLA class I matching ; Cadaveric renal transplant ; Crossreactive antigens (CREG) ; Flow cytometric crossmatch (FCXM) ; Anti-HLA alloantibodies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Donor-recipient HLA matching was retrospectively evaluated in 111 cadaveric renal transplants using Takemoto's ten-residue model in which HLA class I antigens are clustered by crossreactive group (CREGs) on the basis of amino acid sequence homology and the sharing of a particular public epitope. The grade and type of HLA residue mismatching were correlated to posttransplant, class I donor-specific antibody production (monitored by flow cytometry crossmatch), rejection occurrence and clinical outcome during the 1st year posttransplant. In 52 patients with 0 mismatchings (MMs) we observed a low incidence of rejection (11.1 %) and antibody production (11.1 %) for 0 CREG MM grade, while 1 MM was enough to increase immune response against graft (rejection 35 %; antibodies 30 %). Moreover, a significant correlation was observed between Q144, E163, Q62 and L82/R82 epitopes and the incidence of acute rejection and antibody production (“immunogenic” residues) in patients grouped for a single residue mismatch.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001470050379
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  • 5
    Electronic Resource
    Electronic Resource
    IgA nephritis in a patient with Alagille syndrome and a transplanted liver (1992)
    Springer
    Pediatric nephrology 6 (1992), S. 559-561 
    Details
    ISSN: 1432-198X
    Keywords: Alagille syndrome ; Arteriohepatic dysplasia ; IgA nephritis ; Liver transplantation ; Cyclosporine A
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Alagille syndrome (arteriohepatic dysplasia) is a major cause of intrahepatic cholestasis in infancy. The present report describes a patient with Alagille syndrome who presented with hematuria and IgA nephritis 7 years after an orthotopic liver transplantation and immunosuppression. This patient suggests that glomerular lipidosis is not an inherent feature of the Alagille syndrome, and that IgA nephritis may develop in spite of ongoing immunosuppressive treatment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00866506
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  • 6
    Electronic Resource
    Electronic Resource
    Intracranial calcifications and nephrogenic diabetes insipidius (1991)
    Springer
    European journal of pediatrics 150 (1991), S. 599-600 
    Details
    ISSN: 1432-1076
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02072216
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  • 7
    Electronic Resource
    Electronic Resource
    Diagnostic difficulties and positive therapeutic response in a patient with sinus histiocytosis with massive lymphadenopathy (1993)
    Springer
    European journal of pediatrics 152 (1993), S. 699-699 
    Details
    ISSN: 1432-1076
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01955253
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  • 8
    Electronic Resource
    Electronic Resource
    Corticosterone methyl oxidase type II deficiency: a cause of failure to thrive and recurrent dehydration in early infancy (1992)
    Springer
    European journal of pediatrics 151 (1992), S. 170-173 
    Details
    ISSN: 1432-1076
    Keywords: Corticosterone methyl oxidase type II ; Failure to thrive ; Salt wasting
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Corticosterone methyl oxidase type II (CMO II) deficiency is an uncommon cause of salt-wasting in infancy. We describe a boy who presented with recurrent dehydration and severe failure to thrive in the first 3 months of life, associated with mild hyponatraemia (serum Na+ 127–132 mEq/l) and hyperkalaemia (serum K+ 5.3–5.9 mEq/l). The diagnosis was suggested by an elevated plasma renin activity (PRA): serum aldosterone ratio, and subsequently confirmed by an elevated serum 18-hydroxycorticosterone: aldosterone ratio. Treatment with 9α-fluorohydroxycortisone normalized growth parameters and PRA levels. CMO II deficiency should be considered in infants with recurrent dehydration and failure to thrive, even when serum sodium and potassium levels are not strikingly abnormal.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01954376
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  • 9
    Electronic Resource
    Electronic Resource
    Osteopetrorickets: case report (2000)
    Springer
    European journal of pediatrics 159 (2000), S. 579-581 
    Details
    ISSN: 1432-1076
    Keywords: Key words Osteopetrosis ; Rickets
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report the case of a baby girl who presented with rickets at 3 months. At the age of 5 months she was readmitted because of nystagmus and a diagnosis of osteopetrosis was made on the basis of clinical and radiological findings. Rickets is a paradoxical feature of osteopetrosis resulting from inability to maintain a normal calcium-phosphorus balance. In our patient the onset of rickets before other symptoms of osteopetrosis suggests a primary defect. Conclusion It is possible that patients with osteopetrosis and rickets (osteopetrorickets) represent a different mutation like the osteopetrosis mouse, which is the only animal mutation with rickets.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004310000485
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  • 10
    Electronic Resource
    Electronic Resource
    A new device to remove obstruction from endotracheal tubes during mechanical ventilation in critically ill patients (1994)
    Springer
    Intensive care medicine 20 (1994), S. 573-576 
    Details
    ISSN: 1432-1238
    Keywords: Mechanical ventilation ; Endotracheal tubes ; Obstruction ; Acute respiratory failure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Objective To evaluate the efficiency of a new device developed to remove obstructions from endotracheal tubes (ETT) in mechanically ventilated patients. Design Open study in mechanically ventilated sedated and paralyzed ICU patients. Setting General ICU and Laboratory of Respiratory Mechanics of the University of Rome “La Sapienza”. Patients 8 consecutive unselected mechanically ventilated, critically ill patients in which a partial obstruction of ETT was suspected on the basis of an increase of the peak inspiratory pressure (〉20%) plus the difficult introduction of a standard suction catheter. Interventions Obstructions to ETT were removed with an experimental “obstruction remover” (OR) Measurements “In vivo” ETT airflow resistance (0.25; 0.5; 0.75; 1l/s) was evaluated before and after use of the OR; the work of breathing necessary to overcome ETT resistance (WOBett) was also evaluated before and after OR use. Results The use of OR significantly reduced in all patients the ETT “in vivo” resistance (From 5.5±2.3 to 2.9±0.5 cmH2O/l/s at 0.25l/s,p〈0.05; from 9±2.4 to 3.8±0.8 cmH2O/l/s at 0.51l/s; from 12.2±3.5 to 5.7±1.2 cmH2O/l/s at 0.75l/s; from 16.9±6 to 9.3±3.8 cmH2O/l/s at 1l/s,p〈0.01 respectively). Also the WOBett was significantly reduced after use of the OR (from 0.66±0.19 to 0.34±0.08 J/l;p〈0.05) Conclusion This experimental device can be safely and successfully used to remove obstructions from the ETT lumen, without suspending mechanical ventilation, reducing the need for rapid ETT substitution in emergency and life-threatening situations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01705724
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