ABSTRACT
Introduction: Type 2 diabetes mellitus (DM) is the most lifestyle risk factor for cognition. Regular treatment and managementof Type 2 DM could prevent the onset and progression of cognitive impairment. Cognitive decline associated with DM mayinfluence one’s ability to perform self-care and affect glycemic control.Aim: Our prospective observational study aimed to analyze the cognitive impairment using a mini-mental status examination(MMSE) in patients with Type 2 DM.Materials and Methods: This prospective observational study was conducted to analyze the cognitive impairment using MMSEin patients with Type 2 DM. A total of 50 patients diagnosed with Type 2 diabetes were included in the study. All the demographicand laboratory investigation data so obtained was tabulated and was analyzed statistically, and results were discussed.Results: Of 50 patients, 26 patients were male and 24 patients were female. Based on the age group, 11 patients were in theage group below 40 years, 21 patients between 40 and 50 years, 16 patients between 51 and 60 years, and 2 patients >60years. Based on the duration of Type 2 diabetes, 16 patients had <5 years and MMSE score of 24.28 and 34 patients had >5years and MMSE score of 22.14. Based on cognitive impairment, 44 patients had mild cognitive impairment and 6 patientshad moderate cognitive impairment.Conclusion: From this study, we concluded that the duration of Type 2 DM and level of HbA1c affect the cognitive status ofthe individuals. A greater understanding of the mechanisms linking Type 2 DM and cognitive impairment may facilitate thedevelopment of new ways for the treatment of cognitive impairment.
ABSTRACT
The mode of binding of the substrate analog 2'-deoxy-2'-fluoroguanylyl- (3',5')-cytidine (GfpC) to RNase T1 was determined by computer modelling studies. The results obtained are in good agreement with the observations of 1H-nmr studies. The modes of binding of the substrate analog GfpC and the substrate GpC to the enzyme RNase T1 have been compared. Though the guanine base favours to occupy the same site of the enzyme in both the complexes, significant differences are observed in the local environment around the 2'-substituent group of guanosine ribose moiety. In the RNase T1-GpC complex, the 2'-OH group is in close proximity to the side chain carboxylic acid of Glu58 which leads to the formation of a hydrogen bond. However, in the RNase T1-GfpC complex, 2'-fluorine is positioned away from Glu58 due to electrostatic repulsion and instead forms a hydrogen bond with His40 imidazolium group. The results obtained rule out the possibility of His40 serving as the base group in catalysis as suggested by 1H-nmr studies and further support the primary role assigned to Glu58 as the general base group by earlier computer modelling and the recent site directed mutagenesis studies. This study also implies that the 2'-deoxy-2'-fluoro substrate analog may not serve as a good model for determining the amino acid residue which serves as the general base group in ribonuclease catalysed reactions.