Niacin results in reduced monocyte adhesion in patients with type 2 diabetes mellitus

BACKGROUND AND AIM

Patients with type 2 diabetes have increased expression of cell adhesion molecules (CAMs). CAMs and monocyte adhesion mediate essential processes in atherogenesis. It remains unclear if monocytes from patients on niacin have reduced adhesion function.

METHODS

We studied the variation of monocyte adhesion in patients with type 2 diabetes and low HDL-cholesterol, taking either extended release niacin (Niaspan®, Abbott Laboratories) or controls not on niacin. Biochemical parameters including adiponectin, CAMs and fresh monocytes from whole blood for adhesion assays, were studied at baseline and 12-weeks.

RESULTS

Niacin 1500 mg daily raised HDL-cholesterol from 0.8 mmol/l (95% CI: 0.7-0.9) to 0.9 mmol/l (95% CI: 0.8-1.1), p=0.10, and significantly reduced PECAM-1 by 24.9% (95% CI: 10.9-39.0; p<0.05), increased adiponectin by 30.5% (95% CI: 14.1-47.0; p<0.05), with monocyte adhesion reduced by 9.2% (95%CI: 0.7-17.7; p<0.05) in endothelial cells treated in basal conditions, and 7.8% (95% CI: 3.1-12.5; p<0.05) after TNF-α stimulation.

CONCLUSIONS

Monocytes isolated from patients on niacin had reduced adhesion to endothelial cells. Our findings suggest niacin has broad range of effects apart from lipid-modification, and these could be important in cardiovascular risk reduction.

Assessing the quality of care for patients with first-episode psychosis

INTRODUCTION

This study evaluated the quality of care in an early psychosis intervention programme (EPIP), as compared to standard treatment received by patients prior to the inception of the programme.

METHODS

The medical records of 50 patients with first-episode psychosis (FEP) who received psychiatric treatment in the calendar year of 2000, i.e. prior to the implementation of EPIP, and 87 FEP patients who were accepted in the EPIP, were reviewed for a period of one year. These patients were aged between 18 and 40 years. Each medical record was reviewed for a list of process indicators, which were identified from the published literature and other treatment guidelines, and covered different domains.

RESULTS

None of the pre-EPIP patients met all the 13 process indicators, whereas 48 percent of EPIP patients met all the indicators (p-value is less than 0.001). Using the default rate as a proxy of outcome, we found that 19 percent of EPIP patients had defaulted at the end of one year, whereas the default rate was 52 percent for the pre-EPIP patients (p-value is less than 0.001).

CONCLUSION

It is possible to improve the quality of care in patients with FEP through the use of treatment guidelines, regular monitoring of symptoms and side effects, and periodic audits.