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Journal of Pharmaceutical Negative Results
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Year : 2012  |  Volume : 3  |  Issue : 1  |  Page : 34-37

Negative effect of noscapine on human serum albumin glycation

Cell and molecular group, School of biology, College of science, University of Tehran, Tehran, Iran

Correspondence Address:
Alireza Ahmadzadeh
Cell and molecular group, School of biology, College of science, University of Tehran, Tehran
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0976-9234.99654

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Introduction: Glycation, one of the post-translational modifications of proteins, is a nonenzymatic reaction initiated by the primary addition of sugar to the amino groups of proteins. In the early stage of glycation, the synthesis of intermediates leads to the formation of Amadori compounds. In the late stage, advanced glycation end products (AGE) are irreversibly formed after a complex cascade of reactions. It has recently become clear that glycation also affects diabetes-related complications and Alzheimer's disease. The main aim of this investigation is to provide direct evidence for the effects of Noscapine on HSA glycation. Materials and Methods: In this study human serum albumin (HSA) (10 mg / ml) was incubated in phosphate buffered saline (PBS) (50 mM) with Glucose (40 mM) and different concentrations of Noscapine (25, 100, 250, 500 μM), for 42 days, at 37°C, as also HSA was incubated alone (control or H), with Glucose (40mM) (glycated or H + G), respectively, under the same conditions. After incubation the samples were prepared for circular dichroism (CD) and Fluorescencetechniques. Statistical Analysis Used: The results were expressed as mean ± SEM and chi square test was significant at P < 0.05. Results: In glycated sample CD and Fluorescence showed more change relative to the control sample, but in the presence of different Noscapine concentrations and Glucose there were no significant changes relative to the glycated sample. Conclusions: Thus, this study suggests that Noscapine is not responsible for the antiglycation effect.

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