PubMed · 3911425
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F de Roquefeuil, C Goupil. 1985. [Lopril].. https://pubmed.ncbi.nlm.nih.gov/3911425/
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During the last 2 decades in Germany, only minor efforts were expended for the prevention of urinary stones. Substantial technical progress simplified the treatment of existing calculi; thus, it was more convenient to treat a new stone than to prevent its recurrence. But times change! In these days of financial squeeze in the medical system, prevention becomes more attractive. Nevertheless, strategies for kidney stone prevention developed. Established concepts for dietary advice were rejected due to the results of new randomized studies. Moreover, new pharmacological substances were introduced for metaphyalxis. The new concepts are feasible for the daily routine. For some treatment modalities in stone prevention, there is valid evidence from the literature, which should encourage us to adopt these modalities in the future. A number of drugs are used as "good common practice" without any proof from a randomized trial. Often prospective and valid studies are not available. The present paper intends to describe the status quo of nephrolithiasis prevention in Germany, focussing on confirmed data and unsolved problems.
The attenuated total reflection/Fourier transform infrared technique has been utilized to characterize secondary structural changes in human serum albumin (HSA) before and after protein binding via incubation of HSA in different concentrations of ethanol, captopril or ethanol/captopril mixture. The results indicate that ethanol induced a transition from beta-sheet to an alpha-helical structure and promoted conversion of intramolecular hydrogen-bonded beta-sheet to intermolecular hydrogen-bonded beta-sheet. In contrast, captopril or captopril/ethanol mixture induced conversion of intramolecular hydrogen-bonded beta-sheet to intermolecular hydrogen-bonded beta-sheet and resulted in exposure of the aromatic side-chain groups in the unfolding conformation of HSA. Thus, protein binding between HSA and captopril or captopril/ethanol seems to play an important role in protein secondary structure.
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