BACKGROUND: Recently, the usefulness of metformin as an oral hypoglycemic agent has been re-evaluated, while secondary failure of long-term treatment with sulfonylurea (SU) has become a serious problem. In this study, the usefulness of combination therapy with metformin was evaluated in patient with non-obese type 2 diabetes mellitus showing secondary failure of treatment with SU.
PATIENTS AND METHODS: Twenty non-obese patients with type 2 diabetes mellitus showed HbA_1c levels of 7% or over despite more than 5 years of treatment with SU. Metformin was administered to these patients at a dose of 500 mg/day for 3 months in combination with SU, and glycemic control was compared before and after combination therapy.
RESULTS: After combination therapy, the mean plasma glucose level obtained 2 hours postprandial was significantly decreased by 20.0% (216±41.7 mg/dl vs. 172.0±47.7 mg/dl, p<0.001) . In addition, the mean HbA_1c level was significantly decreased by 8.8% (8.0±0.8% vs. 7.3±0.8%, p<0.001) . However, the mean IRI level, the mean body mass index, and mean plasma lipid levels did not significantly change after combination therapy.
CONCLUSIONS: These findings suggest that combination therapy with metformin is useful for improving blood glucose levels without enhancing insulin secretion in patients with non-obese type 2 diabetes mellitus who showed secondary failure of treatment with SU. However, further studies are needed to confirm whether this combination therapy will contribute to delaying the introduction of insulin therapy.

Background: The authors, in collaboration with a nursing college and healthcare organizations, initiated a project, "Tama District (a suburban area in Tokyo) End-of-life Care Networking" for nurses, in order to provide networking opportunities for nurses who would like to work together in their local community. A survey was conducted to identify those nurses' needs before initiating this project. Result: The first networking meeting was held based upon the survey results, and 39 nurses participated. The participants were from 14 hospitals, six home-visit nursing stations, and one home care support office in a northern area of Tama District and its surrounding areas in Tokyo. After having this meeting, it was identified that these nurses were highly motivated in providing better end-of-life care, and they had strong desires to network together and to exchange information about challenges and opportunities in their practice. Conclusion: Future issues and implications included the following: (1) Providing continuous opportunities for nurses with such meetings, and refining and updating programs to meet their needs; (2) Facilitating face-to-face relationships among individual nurses in this local community in order to facilitate better collaboration; (3) Initiating local activities that may improve and enhance nursing practice for patients and families who have health issues in their daily life.