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J Duval

Publications and source records attributed to J Duval.

240 records · Page 14Linked to original sources
PubMedDate not supplied

[Structure-activity relationships in the quinolone group: antibacterial activity of two new compounds (author's transl)].

Authors describe structure-activity relationships in quinolone group and report a study of the antibacterial activity of two new compounds: pefloxacin and its demethyl derivative, AM-715. These two products take place in the field of researches carried out for extending indications of this group of antimicrobial agents by obtaining derivatives more active, with broader spectrum, less biotransformed and susceptible to be used in general infections and not only in urinary tract infections.

Anaerobiosis↗
PubMedDate not supplied

[Estradiol stimulation of ribosomal synthesis in adenohypophysis cells].

A single dose of 10 micrograms oestradiol injected to a male rat stimulates in the anterior pituitary the synthesis of ribosomal RNA and of the associated proteins. This stimulation is shown using in vitro double-labeling of RNA with adenine or guanine and of proteins with valine. The analysis of polysomes reveals the incorporation of the neo-synthesized molecules into the 40 S and 60 S subunits. Therefore, the stimulation of ribosomal RNA and protein biosynthesis by oestradiol is a coordinated process. No change in the whole polysome distribution is observed in these conditions though such a modification may occur in a specific cell population without being detected by using sucrose gradient analysis.

Adenine↗
PubMedDate not supplied

[Action of epimestrol on pituitary thymidine kinase and gonadotropins in the rat. Comparison with clomiphene and cyclofenil (author's transl)].

The authors have evaluated the influence of epimestrol on several parameters: pituitary thymidine kinase in immature male rats, FSH and LH contents of pituitary and plasma in immature male and mature female rats, oestrous cycle of female rats. The results are compared with those obtained with clomiphene and cyclofenil. Epimestrol, as well as clomiphene, although at a lesser degree modifies gonadotropins levels; in contrast to clomiphene, in the pituitary thymidine kinase test epimestrol shows an oestrogenic potency but not an anti-oestrogenic one. More over it induces a vaginal cells cornification. These data suggest that epimestrol could be efficient in inducing pregnancy.

Animals↗