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We analyzed Y-chromosome haplotypes in the Nile River Valley in Egypt in 274 unrelated males, using the p49a,f TaqI polymorphism. These individuals were born in three regions along the river: in Alexandria (the Delta and Lower Egypt), in Upper Egypt, and in Lower Nubia. Fifteen different p49a,f TaqI haplotypes are present in Egypt, the three most common(More)
Hereditary hemochromatosis mutation 845A (C282Y) in the HFE gene was recently described, and the C282Y frequencies were reported for various world populations. The aim of this study was to determine the Y allele frequencies of the C282Y mutation for five French populations. The most elevated value (= 5.6%) was obtained for Bretons, in accordance to the(More)
Recent mutation identification in well-known sperm defects gives proof that there are genetic causes of infertility. Familial forms and some features of the spermograms lead toward the genetic origin of these syndromes. For each syndrome, several clinical aspects and partial forms were described. In these latter, apparently normal spermatozoa coexist with(More)
The aim of this study was to determine the presence of haematogenous neoplastic cells in patients with prostate cancer. Circulating prostate cells can be detected in cancer patients by using a nested-reverse transcriptase-polymerase chain reaction assay (RT-PCR), for prostate-specific membrane (PSM) antigen mRNA. This sensitive nested RT-PCR assay may play(More)
The present study has been conducted to ascertain the level of allelic variation at codon 129 of the prion protein gene in France. Six French populations have been studied (Paris, Lille, Rennes, Chambéry, Grasse and Perpignan), totalling 1374 normal subjects. Mean heterozygosity in France is 46.5%, and the mean Met 129 allele (a high risk susceptibility(More)
The antibacterial activity of phenethyl alcohol (PEA) towards Gram-negative (Escherichia coli and Pseudomonas aeruginosa) and Gram-positive bacteria (Staphylococcus aureus and Enterococcus faecium) was investigated. This activity was expressed as IC (inhibitory concentration) and BC (bactericidal concentration). PEA was bactericidal in the concentration(More)
Ty1 elements, LTR-retrotransposons of Saccharomyces cerevisiae, are known to be activated by genetic and environmental stress. Several DNA-damaging agents have been shown to increase both Ty1 transcription and retrotransposition. To explore further the relationship between Ty1 mobility and DNA damage, we have studied the impact of ionizing radiation at(More)
Tumor necrosis factor-alpha (TNF-alpha), a proinflammatory cytokine, is believed to play an important role in multiple sclerosis (MS) pathogenesis. The objective of this study was to determine whether sequence variation in the TNF-alpha gene is associated with MS. Bi-allelic polymorphisms in the TNF-alpha promoter region (TNF-alpha -238 and -308) and(More)
The chemokine receptor CCR5 constitutes the major coreceptor for the macrophage-tropic strains of HIV-1. A mutant allele of the CCR5 gene called delta32 was shown to provide strong resistance to homozygotes against infection by HIV. The frequency of the delta32 allele was investigated in 2522 noninfected unrelated individuals from 16 different European(More)