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Study shows pine bark naturally reduces cardiovascular risk factors in diabetics

A new study published in the May 2008 (volume 8, issue 25) edition of the journal of Nutrition Research shows Pycnogenol (pic-noj-en-all), an antioxidant plant extract from the bark of the French maritime pine tree, reduces blood sugar in type II diabetes patients, allows people to lower their antihypertensive medication and improves cardiovascular disease (CVD) risk factors. The study, conducted at the University of Arizona, Tucson, indicates Pycnogenol may serve as a potent adjunct to prescription medications for the 20 million people in the Unites States living with diabetes.

Most people with type II diabetes have cholesterol problems and half of those people experience hypertension. It has been documented that Pycnogenol mediates a number of beneficial effects on the cardiovascular system for diabetics and healthy individuals, said Dr. Ronald Watson, a lead researcher of the study. Previous studies have shown Pycnogenol supplementation to be associated with reducing platelet aggregation, lowering LDL and increasing HDL cholesterol and modifying hypertension, among others. But what really makes the study results compelling is Pycnogenol simultaneously lowered blood glucose, LDL cholesterol and blood pressure in patients. Furthermore, this is the first study suggesting that Pycnogenol might also be beneficial in protecting kidney function in diabetics.

The 12-week, randomized, double-blind, placebo-controlled trial consisted of 48 men and women, 40 to 75 years of age, with noninsulin-dependent type II diabetes, taking anti-diabetic medication with metformin, sulfonylurea and glitazones. Furthermore, they took antihypertensive medications with ACE inhibitors such as Lisinopril. Despite their medication their fasting blood sugar was above healthy values (142 mg/dL) and their average systolic blood pressure was 139 mmHg subjects were randomly assigned to receive either Pycnogenol (25 mg, 5 times daily) or matched placebo. Participants were instructed to continue taking their prescription medications.

Blood pressure and heart rate were recorded at baseline and at biweekly follow-up visits physicians tried to lower the patients individual anti-hypertensive medication with aim to keep it below 130 mmHg. At monthly follow-up visits, all unused prescription medications were collected and counted. Change from baseline at weeks four, eight and 12 were calculated after eight hours of fasting for assessing plasma glucose, LDL cholesterol and endothelin-1. Urinary protein concentration was measured from spot urine samples on a monthly basis.

In the Pycnogenol treated groups, results revealed Pycnogenol achieved blood pressure control in 58.3 percent of patients at the end of the 12 weeks with 50 percent reduction in prescription medications. Plasma endothelin-1, a very potent hormone-like arterial constrictor which is typically elevated in diabetes patients, decreased by 17.8 percent. The constriction of arteries is believed to be the cause of hypertension and the decreased endothelin-1 with Pycnogenol is suggested to be the cause for the healthier blood pressure. The mean average blood glucose decreased from high 142.3 mg/dL to a healthy value 118.6, a decrease by 16.7% after 12 weeks. Low-density lipoprotein cholesterol improved significantly, declining by 11.9%.

It is amazing to see that adding Pycnogenol to the regimen of prescription medication brought blood glucose to healthy levels, allowed half the patients to reach healthy blood pressure and enabled 58% to even lower their anti-hypertensive medication, said Watson. An absolutely new finding is that Pycnogenol appears to improve kidney function in diabetic people, this deserves more attention in future investigations. Pycnogenol should be standard adjunct to pharmaceutical treatment of diabetic patients to help control an array of cardiovascular problems.

In the past four years alone, numerous studies have been published on Pycnogenols health benefits for people living with diabetes. In a study published in the March 2004 Diabetes Care, Pycnogenol was shown to lower blood sugar levels and not affect insulin levels. The October 2006 journal of Angiology revealed Pycnogenol reduces diabetic microangiopathy and in 2006, published research in the July journal of Clinical and Applied Thrombosis/Hemostasis revealed Pycnogenol heals leg ulcers in patients who suffer from diabetic leg ulcerations. Additionally, Pycnogenol has been shown to reduce fasting and postprandial serum glucose levels and glycosylated hemoglobin in patients with type II diabetes. And, earlier studies with more than 1,000 diabetes patients, showed that Pycnogenol has the ability to seal leaky capillaries in the eye. This capability stops the progression of vision loss in patients suffering from diabetic retinopathy, a diabetes-induced eye disease that ultimately leads to blindness.


Contact: Melanie Nimrodi
MWW Group

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