Binding of Mercury(II) by N-(2-mercaptopropionyl)glycine. Synthesis, IR and NMR Characterization. Crystal Structure of the 1:2 Solvate of Bis[N-(propionyl-2-thiolato)-glycine]mercury(II) with 4-Methylpyridine

Bis[N-(propionyl-2-thiolato)glycine]mercury(II), Hg[SCH(CH3)CO-NHCH2COOH]2, was obtained by the reaction of an aqueous solution of N-(2-mercaptopropionyl)glycine and mercury(II) acetate. From the 4-methylpyridine (γ-picoline) solution it crystallizes as a 1:2 solvate, Hg[SCH(CH3)CONHCH2COOH]2 ⋅ 2C6H7N, in the triclinic system, space group P1̅ with a = 4.810(5) Å, b = 9.711(4) Å, c = 15.615(8) Å, α = 105.76(4)°, β = 103.44(4)°, γ= 94.01(4)°, Z = 1, R = 0.027. Two N-(propionyl-2-thiolato)glycine molecules are bonded centrosymmetrically to mercury over sulfur atoms as mercaptide at a distance of 2.341(2) Å. Hg(mpgH)2 molecules are connected by centrosymmetrically related hydrogen bonds N1−H⋅⋅⋅O3 of 2.922(5) Å into chains along [100]. Each molecule also forms two hydrogen bonds O1−H⋅⋅⋅N2 of 2.612(6) Å with two γ-picoline molecules. The structure of complexes and binding to sulfur were substantiated by 1H and 13C NMR spectroscopy on the basis of mercury induced Chemical shifts, H−H and C−H coupling constants and connectivities in twodimensional homo- and heteronuclear correlated spectra

High-density lipoprotein cholesterol, apolipoprotein E and atherogenic index of plasma are associated with risk of chronic kidney disease

Aim To investigate the association of parameters of lipid profile and estimated glomerular filtration rate (eGFR) <60 ml/min/1.73 m2 calculated by the Modification of Diet in Renal Disease (MDRD) in non-dialysis kidney patients. Methods The observational, case-control study enrolled patients (n=117) recruited from the Nephrological Counselling Centre of the University Clinical Centre Sarajevo and divided into two groups: group 1 eGFR (15-59 mL/min/1.73 m2), and group 2 (control) eGFR ≥ 60 mL/min/1.73 m2. Concentration of lipids, lipoproteins and apolipoproteins was measured, and atherogenic index of plasma (AIP; log(TG/HDLc)) was calculated. Results High density lipoprotein cholesterol (HDLc) and apolipoprotein E (APOE) concentrations in serum were reduced [(1.02 (0.94-1.29) vs 1.15 (1.1-1.4) mmol/L; p=0.009 and 0.035 (0.026-0.04) vs 0.041 (0.034-0.05) g/L; p=0.002, respectively)], while AIP was higher in group 1 than in group 2 (0.19±0.03 vs 0.09±0.04; p=0.013). Values less than 1.09 mmol/L and 0.038 g/L for HDLc and APOE, or higher than 0.165 for AIP (p<0.05) were associated with the eGFR below 60 ml/min/1.73 m2. The age [OR = 1.1; 95% CI (1.05-1.17)] and AIP [OR = 8.7; 95% CI (1.18-65.0)] were independent positive predictors, while APOE was a negative predictor of eGFR reduction rate (OR=0.01; 95% CI (0.001-0.033; p<0.001). Conclusion Changes in parameters such as HDLc, APOE and AIP are associated with CKD. The study results imply the need of the AIP calculation as routine laboratory work due to its role along with the age and APOE in the prediction of renal function decline