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  • Acquired immunodeficiency syndrome  (1)
  • Aortic constriction  (1)
  • 1
    ISSN: 1432-1459
    Keywords: Cytomegalovirus ; Acquired immunodeficiency syndrome ; Recombinant phosphoprotein (pp150) ; Intrathecal antibody synthesis ; Polymerase chain reaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We evaluated 49 paired cerebrospinal fluid (CSF) and serum samples of 35 patients infected with the human immunodeficiency virus type 1 (HIV-1) for laboratory evidence of cytomegalovirus (CMV) infection. The patients were grouped according to clinical criteria as probable CMV encephalitis/polyradiculomyelitis, CMV retinitis, cerebral toxoplasmosis, progressive multifocal leukoencephalopathy, HIV-1-related cognitive/motor complex, HIV-1-associated myelopathy, and other neurological diseases. Paired CSF and serum samples were analysed for CMV deoxyribonucleic acid (DNA) by polymerase chain reaction (PCR), quantitative intrathecal synthesis of immunoglobulin G (IgG) antibodies specific for recombinant phosphoprotein 150 (pp150) of CMV and CMV-specific serum IgM. Intrathecal synthesis of pp150-specific IgG was detected in 26% of patients (9/35), serum IgM was found in 23% of patients (8/35), and PCR of CSF was positive in 11% of patients (4/35). Detection of CMV-specific DNA in CSF preceded the intrathecal antibody synthesis in three patients for whom serial samples were available. PCR results of the CSF became negative in one patient with CMV polyradiculomyelitis after successful therapy with 9-[2-hydroxy-l(hydroxymethyl) ethoxymethyl] guanine (DHPG). PCR has a higher diagnostic specificity in the acute phase of CMV infection than intrathecal antibody synthesis. The serum IgM response to CMV cannot be used to monitor a compartmentalized immune response in the central nervous system while an intrathecal immune response seems to be associated with recovery either spontaneously or as a result of treatment.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 317 (1981), S. 86-89 
    ISSN: 1432-1912
    Keywords: Glomerular capillary pressure ; Munich-Wistar rat ; Adenosine ; Ureteral obstruction ; Aortic constriction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The effect of acute ureteral obstruction (UO) and reduction of renal artery pressure (AC) on the adenosineinduced renal vasoconstriction was studied in the Munich-Wistar rat. Infusion of adenosine, 0.05 μmol/min · kg body weight, into the thoracic aorta, was associated with a fall of directly measured glomerular capillary pressure (P gc) from 45.2+1.8 to 32.5+1.7 mm Hg, P〈0.001. Elevation of ureter pressure to 39+2 mm Hg abolished the fall of P gc following adenosine infusion, 51.3+1.7 vs. 50.0+1.3 mm Hg, NS. Reduction of renal artery pressure to 70 mm Hg by an aortic clamp above the renal arteries also prevented the fall of P gc due to adenosine, 36.8+0.9 vs. 36.4+1.8 mm Hg, NS. Administration of indometacin (10 mg/kg i.v.) restored the ability of adenosine to reduce P gc in UO from 41.5+1.1 to 25.9+2.6 mm Hg (P〈0.001) and in AC from 34.0+3.4 to 28.2+75.7 mm Hg (P〈0.02). Since previous studies have demonstrated that in UO and AC renal prostaglandin synthesis is enhanced the effects of indometacin suggest that prostaglandins could be antagonistic to the action of adenosine on the kidney. The data show that the renal vasculature becomes insensitive to the vasoconstrictive action of adenosine during elevated ureter pressure and reduced renal artery pressure.
    Type of Medium: Electronic Resource
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