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Alzheimer's Drug Reduces Metabolic Syndrome Induced Inflammation

Alzheimer’s Drug Reduces Metabolic Syndrome Induced Inflammation

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  • Metabolic syndrome is a cluster of conditions that increase the risk of cardiovascular disease and type 2 diabetes
  • The FDA-approved Alzheimer’s drug galantamine was found to reduce the key markers of inflammation by 25 percent
  • Galantamine is a centrally acting acetylcholinesterase inhibitor with anti-inflammatory properties

Alzheimer's medication can reduce inflammation and insulin resistance in patients with metabolic syndrome, according to a clinical trial by scientists at Northwell Health's Feinstein Institute for Medical Research.

The findings could be a potential therapeutic intervention for metabolic syndrome, which affects 30 percent of the adults in the United States.

Alzheimer's Drug 'Galantamine' to Treat Metabolic Syndrome

Inflammation is a hallmark of metabolic syndrome. The four risk factors that comprise metabolic syndrome are increased blood pressure, high blood sugar level, excess body fat around the waist and abnormal cholesterol levels. These risk factors significantly increase the risks for cardiovascular disease and type 2 diabetes. Currently, there is no specific treatment for metabolic syndrome.


Previous studies conducted at the Feinstein Institute showed that galantamine could reduce inflammation levels in mice with obesity. Galantamine is an alkaloid synthetically derived from flowers of Galanthus caucasicus (Caucasian snowdrop), Galanthus woronowii (Voronov's snowdrop), -- flowers which find mention in Greek mythology -- to combat memory loss and delirium. Galantamine is an acetylcholinesterase inhibitor, which reduces the breakdown of the neurotransmitter acetylcholine, a chemical messenger in the brain.

Since inflammation plays a key role in metabolic syndrome, Associate Professor Valentin A. Pavlov, PhD, and his colleagues decided to study the effect of galantamine in people with metabolic syndrome.

"It's been very tough to come up with a treatment that targets all the components of metabolic syndrome, which is becoming a pandemic because it stems from obesity. By repurposing galantamine, it means we don't have to start from zero to establish its safety. We already know it's safe," said Dr. Pavlov, corresponding author of the new research.

"Galantamine can target the entire syndrome as well as targeting components of the syndrome. Using an existing drug is a much faster way of getting a treatment out there. It's promising, it makes me optimistic, and it's a starting point indicating an avenue of research that should be pursued further," said Dr Yael Tobi Harris, study co-author, chief of endocrinology, diabetes and metabolism at North Shore University Hospital and Long Island Jewish Medical Center, part of Northwell Health.

Clinical Trial of Galantamine in Reducing Markers of Metabolic Syndrome

A research team from Feinstein collaborated with a team led by Dr. Fernanda Consolim-Colombo from the University of Sao Paulo, Brazil to perform a randomized, double-blinded, placebo-controlled clinical trial. The clinical trial was conducted to study the effects of galantamine in patients with metabolic syndrome.

The trial involved 30 patients with metabolic syndrome. The study participants were given graduated doses of galantamine every day for 12 weeks. The control group that had 30 patients received a placebo during the same timeframe. During the study period, the levels of inflammatory molecules indicating patients' metabolic syndrome-associated inflammation were tracked.

The participants' insulin levels, insulin resistance (HOMA-IR) heart rate and heart rate variability, and other metabolic and cardiovascular markers were also measured.

At the end of 12 weeks, participants treated with galantamine experienced reduced levels of inflammatory molecules and higher levels of anti-inflammatory molecules compared to placebo group.

The group that received galantamine also experienced a significant decrease in insulin levels and insulin resistance compared with the placebo group.

Galantamine activates the nervous system to decrease inflammation. Inflammation causes insulin resistance, and galantamine reduces inflammation, thereby decreasing insulin resistance.

The graduated doses of galantamine for the study participants ranged from 8mg to 16mg daily. However, the doses were still lower than the highest approved dose for Alzheimer's patients which is 24mg per day. None of the study participants experienced serious side effects.

The research team says that the results are impressive because they were achieved with relatively low doses.

Dr Pavlov and Dr Harris said that more research is needed, including a longer clinical trial with greater numbers of patients with metabolic syndrome. They would also examine galantamine's effects on type 2 diabetes.

The findings of the clinical trial illustrate that it may be possible to treat inflammation in metabolic syndrome. Reducing inflammation and insulin resistance may reduce the risk of cardiovascular disease and other complications, said Dr Kevin J.Tracey, co-author of the study and president and CEO of the Feinstein Institute.

The findings of the study are published in the JCI Insight.

Metabolic Syndrome

Metabolic syndrome is an obesity-driven condition that increases the risk of cardiovascular diseases and type 2 diabetes. Metabolic syndrome is also called insulin resistance syndrome because insulin resistance is the prime reason behind the occurrence of the syndrome. The common causative factor for metabolic syndrome is poor lifestyle practices.

Obesity, elevated fasting glucose, dyslipidemia (high triglycerides and low HDL cholesterol), and high blood pressure define metabolic syndrome. Regular exercise and healthy diet can potentially alleviate metabolic syndrome, but there are numerous obstacles that prevent implementation of lifestyle modifications.

Reference :
  1. Fernanda M. Consolim-Colombo, Carine T. Sangaleti, Fernando O. Costa, Tercio L. Morais, Heno F. Lopes, Josiane M. Motta, Maria C. Irigoyen, Luiz A. Bortoloto, Carlos Eduardo Rochitte, Yael Tobi Harris, Sanjaya K. Satapathy, Peder S. Olofsson, Meredith Akerman, Sangeeta S. Chavan, Meggan MacKay, Douglas P. Barnaby, Martin L. Lesser, Jesse Roth, Kevin J. Tracey, and Valentin A. Pavlov. Galantamine alleviates inflammation and insulin resistance in patients with metabolic syndrome in a randomized trial. JCI Insight (2017), DOI:10.1172/jci.insight.93340.
Source: Medindia

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