Successful outcome of a pregnancy in a woman with advanced cirrhosis due to hepatitis B surface antigenemia, delta super-infection and hepatitis C co-infection: a case report

Pregnancy in women with advanced liver disease is rare. In this paper we described the case of a successful pregnancy in a young woman with advanced cirrhosis due to hepatitis B surface antigenemia, hepatitis delta super-infection and Hepatitis C co-infection. A brief review of the medical literature on pregnancy in women with cirrhosis is also presented

Sustainable Carbododiimine and Triazine Reagents as Collagen Cross-Linking Agents in the Presence of PAMAM Dendrimers

This work reports a general outline on sustainable technologies for the stabilization of collagen and comparative study of 1-ethyl-3-(3-dimethyla-minopropyl)carbodiimide (EDC) versus 4-(4,6-dimethoxy [1, 3, 5] triazin-2-yl)-4-methyl-morpholinium chloride (DMTMM) as cross-linking agents of collagen powder. The cross-linking efficiency of these agents on collagen matrixes in the presence of different polyamidoamine dendrimers (PAMAM) has been tested in order to determine the influence of steric hindrance and aminic groups abundance

Assessing metabolic flux in plants with radiorespirometry

Carbohydrates are the dominant respiratory substrate in many plant cells. However, the route of carbohydrate oxidation varies depending on the relative cellular demands for energy, reductant and precursors for biosynthesis. During these processes individual substrate carbon atoms are differentially released as carbon dioxide by specific reactions in the network, and this can be measured by monitoring the release of 14CO2 from a range of positionally labelled forms of [14C]glucose. Although the relative amounts of carbon dioxide produced from different carbon positions do not allow precise determination of fluxes, they are indicative of the route of carbohydrate utilisation. Such information can be used to determine whether comprehensive metabolic flux analysis is merited, and also to facilitate independent verification of flux maps generated by other techniques. This chapter describes an approach to determine and interpret the pattern of oxidation of carbohydrates by monitoring 14CO2 release during metabolism of exogenously supplied [1-14C]-, [2-14C]-, [3,4-14C]- and [6-14C]glucose. The method is exemplified by studies on Arabidopsis cell suspension cultures, but the protocol can be easily adapted for investigation of other plant materials

Sucrose and Starch Metabolism

International audienceThe metabolism of starch and sucrose fuels all aspects of plant growth and development. Over the last decade, significant advances have been made in our understanding of the metabolism of these compounds through the use of model systems, mainly Arabidopsis. Legume species are characterised by their capacity to form symbioses with Rhizobium, a nitrogen-fixing bacterium, leading to up to half the carbon assimilated in photosynthesis being sequestered to their roots. Study of a legume model may therefore increase our knowledge about carbohydrate turnover. We review here the resources available and the contribution that research on Lotus japonicus has made to our knowledge of sucrose breakdown and starch metabolism in relation to plant growth and development processes, especially processes that are legume specific

A Qualitative Meta-Analysis Reveals Consistent Effects of Atrazine on Freshwater Fish and Amphibians

OBJECTIVE: The biological effects of the herbicide atrazine on freshwater vertebrates are highly controversial. In an effort to resolve the controversy, we conducted a qualitative meta-analysis on the effects of ecologically relevant atrazine concentrations on amphibian and fish survival, behavior, metamorphic traits, infections, and immune, endocrine, and reproductive systems. DATA SOURCES: We used published, peer-reviewed research and applied strict quality criteria for inclusion of studies in the meta-analysis. DATA SYNTHESIS: We found little evidence that atrazine consistently caused direct mortality of fish or amphibians, but we found evidence that it can have indirect and sublethal effects. The relationship between atrazine concentration and timing of amphibian metamorphosis was regularly nonmonotonic, indicating that atrazine can both accelerate and delay metamorphosis. Atrazine reduced size at or near metamorphosis in 15 of 17 studies and 14 of 14 species. Atrazine elevated amphibian and fish activity in 12 of 13 studies, reduced antipredator behaviors in 6 of 7 studies, and reduced olfactory abilities for fish but not for amphibians. Atrazine was associated with a reduction in 33 of 43 immune function end points and with an increase in 13 of 16 infection end points. Atrazine altered at least one aspect of gonadal morphology in 7 of 10 studies and consistently affected gonadal function, altering spermatogenesis in 2 of 2 studies and sex hormone concentrations in 6 of 7 studies. Atrazine did not affect vitellogenin in 5 studies and increased aromatase in only 1 of 6 studies. Effects of atrazine on fish and amphibian reproductive success, sex ratios, gene frequencies, populations, and communities remain uncertain. CONCLUSIONS: Although there is much left to learn about the effects of atrazine, we identified several consistent effects of atrazine that must be weighed against any of its benefits and the costs and benefits of alternatives to atrazine use