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Oral Diabetes Medications Better to Protect Diabetics From Adverse Effects of Pollution

by Sheela Philomena on April 12, 2015 at 10:27 PM
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Oral Diabetes Medications Better to Protect Diabetics From Adverse Effects of Pollution

Researchers have found that intake of oral diabetes medications intake was found to be more effective than insulin in diabetics who are exposed to heavy traffic.

Study participants in Puerto Rico who used insulin and lived next to roads with heavy traffic had markedly increased C-reactive protein (CRP), a marker of inflammation, compared to those living in lower traffic areas. Individuals taking oral diabetes medications did not experience increases in CRP concentration.


"CRP concentration increased 75-200 percent over the two-year period for those 10 percent of study participants living in the highest traffic areas who were using insulin when compared to those living in lower traffic areas," said first and corresponding author Christine Rioux, research assistant professor at the Tufts University School of Medicine in the US. "In contrast, CRP concentration did not increase for the 22 percent of people taking metformin and/or other oral diabetes medications who were also living in the high traffic areas," Rioux noted.

Of the 356 participants in the study, 91 (26 percent) used insulin, 197 (55 percent) used only oral diabetes medication and 68 (19 percent) reported using no diabetes medication.

CRP was measured at the beginning of the study and again two years later, using a high sensitivity test. "It is important to know who is most vulnerable to the adverse effects of traffic pollution exposure for purposes of education and policy," Rioux noted.

People who live near busy roads and spend most of their time in these areas have been shown in many studies to have higher levels of inflammation, a risk factor for many cardiovascular and metabolic diseases.

"This study is important because many people who live near highways may have diabetes and other serious chronic conditions," Mkaya Mwamburi from the Tufts University School of Medicine pointed out. "It is interesting to see that treatments for diabetes may interact with the risks associated with exposure to air pollution."

The study said that it is not clear why oral diabetes medications, unlike insulin, appear to be protective and it warrants additional research. The study was published online in the journal Environmental Pollution.

Source: IANS


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