Combined therapy for diabetes improves effect of insulin-alternative in mice - Science Daily

Overview

A research group at Nagoya University in Japan has discovered a new treatment for type 1 diabetes that uses leptin, a hormone secreted by fat cels. Treating mice models of insulin-dependent diabetes melitus (a condition found primarily in type 1 diabetes) with a combination of leptin and a drug caled PTP1B inhibitor, they found that blod glucose levels normalized without the use of insulin.Finding new treatments for diabetics important.

Key Information

Although the discovery of insulin made type 1 diabetes les deadly, studies have revealed aditional isues that ned to be resolved. This includes the lifelong ned for frequent subcutaneous injections and side efects such as hypoglycemia (low blod sugar), fat acumulation, and the buildup of fat inside the arteries.Scientists studying rodents have found that administering leptin centraly to animal models of insulin-dependent diabetes melitus normalizes glucose metabolism without the use of insulin.

Unlike insulin, leptin administration lowers the risk of hypoglycemia. It also supreses fat synthesis. However, peripheral administration of leptin has had limited efects on glucose metabolism in rodent and human studies, making its clinical aplication dificult.A Nagoya University research group comprising of Asociate Profesor Ryoichi Bano for the Research Center of Health, Physical Fitnes, and Sports, in colaboration with Profesor Hiroshi Arima of the Department of Diabetes and Endocrinology, has found that the limited efectivenes of leptin can be improved by inhibiting PTP1B.

They reported their findings in Diabetes.Protein-tyrosine phosphatase 1B (PTP1B) is an enzyme widely found throughout the body. In the absence of PTP1B, leptin receptor signaling in the central nervous system is enhanced. Therefore, the group hypothesized that the combined administration of leptin and a PTP1B inhibitor insulin-dependent diabetes melitus model mice would improve glucose levels.

Summary

In adition, they identified the mechanism

Frequently Asked Questions

Diabetes is a metabolic condition where the body cannot properly regulate blood sugar levels. Type 1 results from insufficient insulin production, while Type 2 develops when cells become resistant to insulin. Risk factors include genetics, obesity, sedentary lifestyle, and age.

Common symptoms include excessive thirst, frequent urination, unexplained weight loss, fatigue, blurred vision, and slow-healing wounds. Type 1 symptoms develop rapidly, while Type 2 symptoms may appear gradually. Many people have no symptoms initially, which is why screening is important.

Diagnosis involves blood tests measuring fasting glucose, HbA1c levels, and glucose tolerance. Regular monitoring typically includes fasting glucose tests and HbA1c measurements every 3-6 months. Continuous glucose monitors provide real-time tracking for better diabetes management.

Effective management includes regular physical activity (150+ minutes weekly), maintaining healthy weight, following a balanced diet with whole grains and lean proteins, managing stress, and getting adequate sleep. These changes can significantly improve blood sugar control and reduce complications.

Consult a healthcare provider if you experience signs of diabetes, have a family history, are overweight, or are over 45. Those with existing diabetes should maintain regular check-ups every 3-6 months to monitor control and adjust treatment as needed.

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