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Posts with tag Harvard Medical School

History underway in type 1 diabetes cure

Dr. Faustman's lab is currently collecting blood samples from individuals with established Type 1 diabetes. These samples are being used to quantify the number of autoreactive T-cells and develop the adequate dosage for Phase 1 of human trials to cure Type 1 diabetes.

The research has been presented and the NIH confirmed it. By reeducating the confused T-cells and instructing them not to attack healthy islets, an apparent cure of established type 1 diabetes in non-obese diabetic mice is possible. Now, Dr. Faustman is collecting human samples to bestow the same cure for diabetes in humans.

If you wish to be a part of this revolutionary event for curing Type 1 diabetes, please contact the Clinical Coordinator or call Dr. Faustman's lab at (617) 726-4084. Each participant is asked to bring a control person along with them - an unrelated person without Type 1 diabetes or another autoimmune disease. Diabetic or not - you can be a part of history in curing Type 1 diabetes!

Detecting dangerous deep belly fat

It used to be that fat was just fat. Not anymore. Turns out that even fat is, upon close examination, more complicated than we ever realized. Did you know, for instance, that accumulations of deep belly fat are particularly harmful? Such accumulations are a risk factor for Type 2 diabetes because they are associated with increased insulin resistance, not to mention increased risk of heart attack.

One problem with deep belly fat, however, is that you can't necessarily detect it with a tape measure or by eyeballing someone's waistline. That is, you can't tell by just looking at a person how much of the fat surrounding their abdomen is deep belly fat versus the subcutaneous fat that lies just under the skin's surface. However, a new study reports that a simple blood test could solve this problem by measuring quantities of the retinol-binding protein 4, also known as RBP4, in the bloodstream. RBP4 is present in much higher levels in the bodies of those with greater amounts of deep belly fat. Not only does this mean that testing for high levels of RBP4 could be useful in assessing risk for conditions such as Type 2 diabetes or heart disease, it also opens up the possibility of treating such conditions by somehow manipulating RBP4 levels.

The study in question was conducted by scientist Barbara Kahn and colleagues from Harvard Medical School, Beth Israel Deaconess Medical Center, and the University of Leipzig, Germany. The results have been published in the journal Cell Metabolism (July, 2007). Kahn is particularly well known in the area of diabetes-related research for her work on insulin resistance in mice.

Supplementing Evidence for Diabetic Neuropathy

Allow me to explain my choice of photographs. I choose to spot the picturesque sunset over the Ventura Beach horizon, where I will NOT be attending the upcoming Gordon Research Conference on Oxidative Stress and Disease. For those who will be there, do me a favor and drop me a line on Section 3: Oxidative Stress and Diabetes. Here's what I've got so far...

Alpha-lipoic acid is approved in Germany as a drug for the treatment of diabetic polyneuropathies. Alpha lipoic acid shows evidence of being effective in the treatment of diabetic neuropathy and may be useful in treating some other aspects of diabetes. It may help prevent the oxidation of LDL cholesterol and may be protective against oxidative stress. As much as I wish I could jump forward in time, I'll make a forward-looking statement about an upcoming event and come back to update it, after March 11th. Here's my forecast: the Gordon Research Conferences is holding a conference on Oxidative Stress and Disease and it just so happens that section 3 of the Monday night speakers will address topics such as: A radical explanation for diabetic complications, A role for ROS in the etiopathogenesis of insulin resistance, and Mitochondrial dysfunction and type 2 Diabetes. If you need me to drop names to lift your scientific credence in this convention - the speakers come from Harvard Medical Scool, Yale University School of Medicine and Albert Einstein College of Medicine.

These people don't mess around! I close with a big thank you to the creator of Miracle Muffins, for taking an interest in his mother and sharing it with the rest of us battling frustrating complications of diabetes. I'll be actively checking to see how the experts diagnostically address the role of oxidative stress and what they perceive as the best resolution. Until we hear better in days to come, let's keep betting on the benefits of a little ALA in our day.

Novartis Holdup on New Diabetes Drug

Novartis SA reports the U.S. FDA has demanded additional data, including a clinical study in patients with kidney impairment, before giving Galvus its approval. Why the holdup?

The FDA wants more data studying Galvus in patients with impaired kidneys. It had been thought that Galvus might have an advantage because it is not processed by the kidneys, while Januvia is. But another molecule created when the body metabolizes Galvus does build up in the kidney.

In the Feb. 1 issue of The New England Journal of Medicine, David M. Nathan, a Harvard Medical School endocrinologist, noted that it was surprising that the FDA decided to clear Januvia at all, given the "paucity of published data from long-term clinical trials on its safety and efficacy." Nathan is a consultant for Novartis and other drug makers but not Merck.

There are several potential concerns about DPP-4 drugs, clear evidence has not turned up in clinical trials so far. The medicines could affect the immune system, because a receptor on immune cells is very similar to DPP-4. Merck says that Januvia was designed to bind only to the DPP-4 enzyme, reducing the chances of these side effects. Patients with impaired kidneys have more of the drug in their bloodstream and would be more likely to experience side effects.

Fishing for Drugs

A Harvard Medical School scientist's experiments with fish discarded along the coast near Boston have led to a new class of diabetes drugs. The latest, from Novartis, may get U.S. approval this week.

In the late 1970s, Habener, a doctor specializing in diabetes care, began buying discarded fish to learn about the ways animals controlled blood sugar. By 1987 Habener discovered a protein in the pancreas of anglerfish that tells the pancreas to produce insulin. He called it glucagon-like peptide-1, or GLP-1. In 1995, researchers uncovered another use for Habener's discovery to treat diabetes. The scientists found an enzyme that digests GLP. By blocking the enzyme, they could increase the body's reserves of GLP, thereby raising insulin levels. Twenty years later, we will soon have the pleasure of meeting Novartis' concept for this chronology of discoveries in the form of liraglutide.

In clinical trials, patients taking liraglutide attained normal blood sugars without the common side effect of weight gain. In fact, liraglutide was more likely to make the patients slightly leaner. Depending on dosage and length of treatment, it may help patients to lose weight. The drug does not cause a change in appetite. Furthermore, none of the liraglutide patients experienced episodes of low blood sugar levels throughout the trials.

I'm no fisherman, but if all the seagulls of Big Pharma are swarming overhead - there's bound to be a school of fish below. However, this school is quite competitive. At last count, the five largest diabetic drug makers are using Habener's findings to create new medicines.

Healthy lifestyle trumps genetics in Type 2 diabetes risk, shows gene variant study

Genetics affects diabetes risk...but lifestyle is still the most important factor at play. That's the conclusion of a new study, which showed that a certain gene variant gives people a substantially increased risk for developing Type 2 - an eighty percent higher risk, in fact.

But before you throw up your hands and say "I can't fight Mother Nature," bear this in mind: the researcher also said that a healthy lifestyle is enough to pretty much cancel out that genetic risk. In essence, lifestyle trumps genetics, says study author Dr. Jose C. Florez, from Massachusetts General Hospital and Harvard Medical School. And the lifestyle changes required are nothing too major: just losing a little weight and exgaging in moderate daily exercise is enough to do the trick. "Environment can overcome the genetics you have received," says Florez.

The gene in question is known as TCF7L2 and had been identified with Type 2 diabetes by a previous study. This latest study aimed to see if variants in the gene could be usued to predict who would have Type 2 diabetes. Health information was gathered for nearly 3,500 people and, for those people, the researchers gathered genetic information along with a check on insulin secretion and sensitivity. This was repeated one year later. This data was used to calculate risk in each participant.

Major study links Type 2 diabetes and glaucoma risk

A major twenty-year study conducted in Boston has concluded that there is a link between Type 2 diabetes and an increased risk for primary open angle glaucoma (POAG), which is the most commonly found form of glaucoma.

The research was carried out at Harvard Medical School, the Massachusetts Eye and Ear Infirmary and Brigham and Women's Hospital. A pretty amazing number of people were involved in the study: 76,000 women, enrolled between 1980 and 2000. The results have been published in the journal Ophthalmology.

The bottom line? Yes, Type 2 diabetes is associated with poor lifestyle choices and obesity. However, this study indicates that other, unrelated, factors are to blame for the diabetes-glaucoma link. So if someone develops Type 2 diabetes, for whatever reason, there are all kinds of other factors involved in determining risk factors for diabetes-related health complications, like glaucoma.

Depression a problem for many Type 1 kids, says Harvard study

It seems that not only is there a link between having diabetes and depression, but that that link extends to children as well. That's the word from researchers at Harvard Medical School who have conducted a study on the mental health of children and adolescents with Type 1 diabetes. The kids involved in the study have had diabetes for at an average of eight years. Each participant and his/her parents filled out questionnaires dealing with family issues, emotional states and so on.

The results have been published in the latest issue of Diabetes Care (June 2006). The conclusion? 15.2 percent of the kids had symptoms of depression and this was linked to having less than optimal control of blood sugar levels. The recommendation is that doctors try to get involved by paying closer attention to the emotional state of diabetic kids and their families.

Ha! I'm sorry, but it seems to me that doctors have so many responsibilities already and are always pressed for time. My first thought is that the best response would be the often-talked-about collaborative approach that many diabetes experts now recommend--this would give families a support network that might be more likely to pick up on depression and be able to coach families through it.

Survey says Americans much more likely than Canadians to have diabetes

Canadians versus Americans. Which nationality is more likely to suffer from diabetes, do you think? That's right: Americans. In fact, people in the US are forty-two percent more likely than Canadians to have diabetes. As if that weren't bad enough, Americans are also thirty-two percent more likely to have hypertension and twelve percent more likely to have arthritis.

This news comes to us courtesy of the American Journal of Public Health, which published results of a study conducted at Harvard Medical School. Note that this study consisted of a telephone survey conducted in 2002-2003. I wonder how accurate such surveys are - I mean, when you're trusting what people tell you about themselves, rather than relying on medical exams or records. Hmmm.

Harvard says beta-blockers, diuretics linked to Type 2 diabetes risk

This must be one of my least favorite types of news: that certain drugs used to treat one health problem can actually put you at risk of developing another health problem. Yikes! Here's the latest scoop: diuretics and beta-blockers are often used to treat hypertension. However, there's new evidence that these commonly prescribed meds may increase patients' risk of developing our old friend, Type 2 diabetes.

The findings come from researchers from Harvard Medical School and have been published in Diabetes Care. In a nutshell, subjects taking a certain type of diuretic increased their risk of developing Type 2 by twenty percent in older women, forty-five percent in younger women, and thirty-six percent in men. Of the subjects taking beta-blockers, older women had a thirty-two percent higher risk, while men were at twenty percent.

The researchers conclude with the usual luke-warm medical advisory typically accompanying such reports: that increased surveillance for diabetes is recommended for patients being prescribed these drugs. Not much of a comfort really, is it? Not when most doctors spend, like, five minutes with you and forget you the moment you walk out the door. I guess you have to weigh the pros and the cons when you take any medications.

Major diabetes conference now underway in Chicago

Some of the world's foremost experts on diabetes are participating in a major conference, currently underway in Chicago (April 26-30). It is the fifteenth annual meeting of the American Association of Clinical Endocrinologists (AACE). Speakers include C. Ronald Kahn, of the Joslin Diabetes Center, and Mary K. Iacocca of Harvard Medical School. Kahn and Iacocca will be presenting results of new research linking Type 2 diabetes and genetics. (See my previous blog, by the way, for more on that link.) Some other topics up for discussion include methods of screening for diabetes and the prediction of gestational diabetes. In addition, a wealth of other topics will be covered as well, relating to other types of endocrine disorders.

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