Kyste de la vésicule séminale associé à une agénésie rénale homolatérale: à propos de trois observations

The combination of seminal vesicle cyst and homolateral renal agenesis is a rare congenital anomaly. However, this anomaly is diagnosed more frequently due to progress in medical imaging. The authors report three cases of seminal vesicle cyst associated with ipsilateral renal agenesis in two cases and ectopic ureter in one case. All cases presented nonspecific clinical symptoms. The diagnosis was suspected on imaging (ultrasound and computed tomography). Treatment was surgical in two cases and endoscopie in one case. The authors review the literature on the aetiology and pathogenesis of seminal vesicle cyst, its association with homolateral renal agenesis and diagnostic and therapeutic methods.     

The Interaction Effect to Fertilization on the Mineral Nutrition of Canola Under Different Salinity Levels

Journal of Plant Growth Regulation - The objective of this work was to study the effect of increasing rates of salinity with and without fertilizer on the mineral nutrition of canola. It is about...     

A newly synthesized 6-methyl-7H,8H,9H-[1,2,4]triazolo[4,3-b][1,2,4]triazepin-8-one for potential inhibitor of adenosine A1 receptor: a combined experimental and computational studies

Abstract

6-Methyl-7H,8H,9H-[1,2,4]triazolo[4,3-b][1,2,4]triazepin-8-onehas been synthesized, characterized by spectroscopic techniques (FT-IR, ¹H and ¹³C NMR) and finally the structure was confirmed by single crystal X-ray diffraction studies. In the title molecule, C₆H₇N₅O, the 7-membered ring adopts a bowl-like conformation. In the crystal, the molecules form stacks along the c-axis direction through offset π-stacking interactions between the 5-membered rings and C–H···N hydrogen bonds. The stacks are associated via a combination of N–H···N, C–H···O and C–H···N hydrogen bonds. Further, the Hirshfeld surface analysis reveals the nature of molecular interactions and the fingerprint plot provides information about the percentage contribution from each individual molecular contact to the surface. In addition, due to its biological interest the target molecule adenosine A1 receptor was found based on Structural Activity Relationship (SAR) analysis and, further, subjected into molecular docking and molecular dynamics analysis to understand the binding interaction and stability of the molecule in adenosine A1 receptor system. Furthermore, the Density Functional Theory (DFT) calculations were carried for free compound and the compound in active site (single point DFT), to know the internal stability.

Communicated by Ramaswamy H. Sarma     

Aboveground biomass estimation of the shrubs, Echiochilon fruticosum (Desf.) and Helianthemum kahiricum (Del.) in the arid zone rangelands of Tunisia

The knowledge of the plant biomass is very important for the assessment of the rangeland productivity. It could help to select the appropriate species for the improvement of natural ecosystems (rehabilitation, restoration and seedling). By examining different correlations between the biomass production and the volume parameters of two North African shrub species of high range value ( Echiochilon fruticosum Desf. and Helianthemum kahiricum Del.), we aimed to establish the appropriate regression models, which could be useful for the prediction of the productivity of these species. The data showed a significant relationship between the total biomass (TB) production and the mean diameter (MD) of the studied species ( R ² = 0.65 for Echiochilon and R ² = 0.75 for Helianthemum ). Likewise, annual fresh production (leaves and current-year shoots) was well correlated with MD of Helianthemum ( R ² = 0.82). However, the correlation between these two parameters was relatively low for Echiochilon ( R ² = 0.42).