What is Renal Stenosis?
It is very interesting that a lot of people don't know that blocking the arteries of the kidney can be a cause for hypertension. Particularly someone who is young and becomes hypertensive suddenly, one should make sure there is no blockage in the renal arteries. There are millions of people with hypertension, so it's easy to think that we should simply give them medications. But it's important to understand that there is a very small segment of the population, who develop hypertension at a young age, particularly in their twenties, thirties, forties. They need to be looked into. All we need to do is a scan of their kidneys. What is called a duplex scan or an ultrasound of their arteries. With this methodology we can actually pick up a narrowing of the arteries.
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What is Peripheral Arterial Disease?
Dr. Sattesh Babu of Vascular Associates of Westchester discusses Peripheral Arterial Disease, who is at risk, why it is important to be screened and current treatments. Pad is essentially a blockage of the arteries in the lower extremities. That is what we mean by peripheral arteries -- leg arteries blocked by hardening of the arteries, buildup of cholesterol, plaque and calcium. This in part is a process of aging, but certainly also brought on by smoking. Diabetes is another risk factor, as is hypertension.
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Human Stem Cells Return Motor Function to Paralyzed Rats
Researchers from the University of California, San Diego report that experimental rats recovered from blood flow related paralysis after receiving grafts of human spinal stem cells. When damage occurs due to loss of blood flow to the spine's neural cells, applying human neural stem cells directly to the spinal cord achieves recovery of motor function. In this specific type of paralysis, known as spinal cord ischemia, there is no mechanical damage to the spinal cord. The brain motor centers remain partially connected to the spinal cord but the loss of inhibitory neurons leads to the degeneration of muscle control in lower limbs.
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