Outcome of children born after pregnancy denial.

INTRODUCTION: Denial of pregnancy remains a phenomenon little known to healthcare professionals. Yet its repercussions are far from negligible. The aim of this study was to assess whether denial of pregnancy has an impact on the infant's development. PATIENTS AND METHOD: This prospective study included 51 full-term infants born in Nancy Regional Maternity Hospital between 1 January 2009 and 30 June 2015. In this study, the development of the children was followed longitudinally. We collected data during the neonatal period, at 9months, and at 2years of age from the infants' file and standardized medical certificates, and current data through a telephone questionnaire. Three fundamental aspects of the infants' development were analyzed: height and weight growth, psychomotor development, and the existence of pathologies. Given that this was a preliminary study aiming at exploring facts, no statistical tests were carried out. RESULTS: The rate of denial of pregnancy was one birth in 300 during the study period. These infants showed proportional intrauterine growth restriction, which leveled out later, with their height and weight growth normal by month 9. The full-term perinatal mortality rate was 5%. The infants showed no sign of increased morbidity; 20% of them presented with delayed psychomotor development at 9months of age, with an increased impact as they grew older. The rate reached 30% after 24months, half of which were language disorders. CONCLUSION: The results of this preliminary study point out the need for thorough monitoring of these infants throughout infancy.

Rapid dye decolorization method for screening potential wood preservatives.

We developed a new screening method for potential wood preservatives based on decolorization of the dye Remazol Brilliant Blue R by extracellular oxidative agents produced by wood decay fungi. Oxidative biodegradation of lignin yielded decolorized zones around and under fungal cultures on a dyed agar medium. Inhibitory effects were detected by direct observation and measurement of the decolorized zones.

Hydroxylation and biodegradation of 6-methylquinoline by pseudomonads in aqueous and nonaqueous immobilized-cell bioreactors.

Selective culturing of pseudomonads that could degrade quinoline led to enrichment cultures and pure cultures with expanded substrate utilization and transformation capabilities for substituted quinolines in immobilized and batch cultures. Immobilized cells of the pseudomonad cultures rapidly transformed quinolines to hydroxyquinolines in bioreactors and were able to tolerate higher substrate concentrations compared with batch cultures. After prolonged incubation on a mixture of quinoline and 6-methylquinoline, a quinoline-degrading culture of Pseudomonas putida developed the ability to biodegrade 6-methylquinoline, which initially was resistant to microbial attack, as a sole source of carbon and energy. 6-Methylquinoline was also degraded in a nonaqueous solution by this strain of P. putida when a solution of 6-methylquinoline in decane was flowed through an immobilized-cell fixed-bed bioreactor.

Microbial degradation of quinoline and methylquinolines.

Several bacterial cultures were isolated that are able to degrade quinoline and to transform or to degrade methylquinolines. The degradation of quinoline by strains of Pseudomonas aeruginosa QP and P. putida QP produced hydroxyquinolines, a transient pink compound, and other undetermined products. The quinoline-degrading strains of P. aeruginosa QP and P. putida QP hydroxylated a limited number of methylquinolines but could not degrade them, nor could they transform 2-methylquinoline, isoquinoline, or pyridine. Another pseudomonad, Pseudomonas sp. strain MQP, was isolated that could degrade 2-methylquinoline. P. aeruginosa QP was able to degrade or to transform quinoline and a few methylquinolines in a complex heterocyclic nitrogen-containing fraction of a shale oil. All of the quinoline- and methylquinoline-degrading strains have multiple plasmids including a common 250-kilobase plasmid. The 225-, 250-, and 320-kilobase plasmids of the P. aeruginosa QP strain all contained genes involved in quinoline metabolism.

Isolation of microorganisms capable of degrading isoquinoline under aerobic conditions.

Isoquinoline-degrading microbial cultures were isolated from oil- and creosote-contaminated soils. The establishment of initial enrichment cultures required the use of emulsified isoquinoline. Once growth on isoquinoline was established, isoquinoline emulsification was no longer required for utilization of isoquinoline as the sole source of carbon and nitrogen by these cultures. An isoquinoline-degrading Acinetobacter strain was isolated from one of the enrichment cultures. The degradation of isoquinoline was accompanied by the accumulation of a red cell-associated pigment and of 1-hydroxyisoquinoline, which was further degraded to unknown intermediary ring-cleavage products and carbon dioxide.