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Biomedical subjects

A Mariot

Publications and source records attributed to A Mariot.

17 recordsLinked to original sources
PubMed1990

[Allergic risks of hemodialysis. Results of an allergologic investigation in 138 patients].

One hundred and thirty eight unselected hemodialysis patients were screened for allergic symptoms, atopy, total IgE, eosinophil count, specific IgE against ethylene oxyde (ETO), formaldehyde (FA) and isocyanates (Iso) and delayed hypersensitivity to formaldehyde. Six patients demonstrated hypersensitivity to formaldehyde. Six patients demonstrated hypersensitivity reactions at the beginning of hemodialysis; one had recurrent urticaria and one aggravated a preexistent asthma. There were no predicting factors but 6 out of these 8 patients (62%) had positive RAST against ETO, FA or Iso. Eczematous lesions occurred in 40 patients (20%) mainly located around the fistula. Eczema is significantly more frequent in men, atopic patients, and patients using a type of machine where we measured high residual FA concentrations (greater than 50 mg/l). A positive FA patch test was observed in 22% of the patients with an eczema compared to 1.3% in the asymptomatic patients (p less than 0.01).

Adult↗
PubMed1984

[Fluoride osteosis of hydro-telluric origin in a female patient with renal insufficiency. Apropos of a case with histomorphometric analysis].

We report a case of fluorosis due to high water and soil contents in a 23-year-old Algerian woman. The condition, which is infrequent at this age, was promoted by chronic renal failure due to a congenital renal malformation. Roentgenograms showing osteosis with increased bone density were suggestive of fluorosis rather than renal osteodystrophy. Bone tissue fluoride assay confirmed fluorosis. Histomorphometric analysis of bone biopsy specimens showed mixed lesions: major osteocondensation due to bone fluorosis and morphologic and dynamic osteomalacia related to the chronic renal failure.

Adult↗
PubMedDate not supplied

Genetic diversity in natural populations of Piper cernuum.

Piper cernuum is a native plant of the Brazilian Atlantic rain forest. This work studies the distribution of allozyme diversity in P. cernuum natural populations in order to establish a strategy for sustainable management and conservation. Leaf samples were collected in two Brazilian states. High divergences among populations (F(SR) = 0.380) and low divergences among regions (F(RT) = -0.069) and among gaps of the same population (F(GT) = 0.062) were found. No association between the geographical variation and the genetic distance was detected. An excess of heterozygotes was detected in the populations (F(IS) = -0.170), suggesting selection in favor of heterozygotes. The results, and the fact that the species depends on constant gap formation for maintenance of its dynamism, suggest that the founder effect is largely responsible for the structuring of populations. For sustainable management, the maintenance of plants/reproductive branches in the gaps is of major importance. The genotypes produced in these gaps are responsible for the establishment of new gaps and are the foundation for new populations, maintaining the dynamics of allele movement.

Alleles↗