biology animations download
1-www.dnalc.org (biology animation library)
2-http://vcell.ndsu.edu/animations/ (Cell Animation Collection)
3-bio-alive.com/animations/cell-biology.htm
4-www.learner.org/courses/biology/archive/index.html
2-http://vcell.ndsu.edu/animations/ (Cell Animation Collection)
3-bio-alive.com/animations/cell-biology.htm
4-www.learner.org/courses/biology/archive/index.html
protein folding animation - 2
protein folding information:
1-en.wikipedia.org/wiki/Protein_folding
2-folding.stanford.edu
protein synthesis animation
protein synthesis animations
1-www.biostudio.com/demo_freeman_protein_synthesis.htm
2-www.brookscole.com/.../animations/protein_synthesis/protein_synthesis.html
coronary bypass surgery animation
realted animation topics: (august 09)
1-angioplasty animation
2-angioplasty and stenting animation
3-symptoms of heart attack video
4-cholesterol and heart diseases animation
5-cholesterol animation
6-woman's heart health video
7-heart disease animation
8-Coronary Artery Angioplasty animation
9- heart attack animation
angioplasty animation
A angioplasty stent is a tiny mesh tube that is left at the blockage site to help the artery stay open. Like a bridge support, it is there to prevent collapse. Along with providing immediate help by keeping the artery open, stenting has a long-term benefit because it may eliminate many of the factors that cause restenosis, including regulating the size of the arterial opening and decreasing the effects of wall thickening.
Angioplasty stents can be used in a number of ways in tandem with angioplasty procedures. A stent may be inserted during an original angioplasty to prevent possible arterial collapse and lower the chance of heart attack and/or restenosis. A stent may also be inserted during a second angioplasty, to prevent recurrent restenosis. If restenosis warrants a bypass procedure rather than angioplasty, a stent may also be inserted as part of the bypass procedure.
It is important to note that the stenting procedure is more difficult to perform than balloon angioplasty because the stent is larger and less flexible than the balloon catheter. More skill is required to insert stents than to perform balloon angioplasty. Therefore, the procedure must be performed by an experienced cardiologist, angioplasty animation.
Current Food and Drug Administration guidelines require that patients who receive stents must be placed on anti-clotting medications for several weeks until the stent is overgrown by the artery lining. This additional medication and monitoring will require an extended hospital stay, angioplasty animation.
Angioplasty stents can be used in a number of ways in tandem with angioplasty procedures. A stent may be inserted during an original angioplasty to prevent possible arterial collapse and lower the chance of heart attack and/or restenosis. A stent may also be inserted during a second angioplasty, to prevent recurrent restenosis. If restenosis warrants a bypass procedure rather than angioplasty, a stent may also be inserted as part of the bypass procedure.
It is important to note that the stenting procedure is more difficult to perform than balloon angioplasty because the stent is larger and less flexible than the balloon catheter. More skill is required to insert stents than to perform balloon angioplasty. Therefore, the procedure must be performed by an experienced cardiologist, angioplasty animation.
Current Food and Drug Administration guidelines require that patients who receive stents must be placed on anti-clotting medications for several weeks until the stent is overgrown by the artery lining. This additional medication and monitoring will require an extended hospital stay, angioplasty animation.
angioplasty and stenting animation
During angioplasty, a balloon tipped catheter is inserted directly into a leg vein, and then threaded up to a coronary artery where the balloon inflates in an effort to flatten the fatty build-up against the artery walls, allowing blood to flow more easily. The American Heart Association (AHA) estimates that 434,000 angioplasties were performed in 1995.
Studies have provided evidence that the number of angioplasty procedures a physician performs per year may be an indicator of the procedure's possible outcome, including heart attack, emergency bypass surgery, or death. In 1988, the American Heart Association (AHA), and the American College of Cardiology (ACC) agreed upon a recommended minimum requirement for certification: 50 angioplasties for an individual cardiologist per year. In 1992, this number was raised to 75, but at the time the choice of these numbers was largely arbitrary. Two new studies now provide support for implementation of these minimum guidelines.
symptoms of heart attack video
The first hour of a heart attack is known as the "golden hour." If you get help during that first hour, your chances of recovery are greatly improved. Yet many people hesitate to get help when they first experience symptoms. They're afraid of the embarrassment of going to the emergency room and finding that nothing is wrong. So, it is important that you know the symptoms that may indicate that a heart attack is in progress.
Many of the symptoms of heart attack can be brought on by digestive disturbances or other less serious conditions. But only sophisticated medical tests can determine for sure if you're having a heart attack. Heart attacks may vary from person to person, and from heart attack to heart attack. Women, for example, may experience "atypical' symptoms such as pain between the shoulder blades rather than crushing chest pain. This may result in them delaying seeking treatment. That is a great mistake, symptoms of heart attack video.
Heart attack is one instance where getting treatment promptly can mean the difference between life and death. If you are in doubt, err on the side of being more cautious and go to the emergency room and get yourself checked. We will try to describe some of the most common characteristics of heart attack here. Before that we will introduce the other pain called angina which is often precursor to a heart attack, symptoms of heart attack video.
source:www.holisticonline.com
Many of the symptoms of heart attack can be brought on by digestive disturbances or other less serious conditions. But only sophisticated medical tests can determine for sure if you're having a heart attack. Heart attacks may vary from person to person, and from heart attack to heart attack. Women, for example, may experience "atypical' symptoms such as pain between the shoulder blades rather than crushing chest pain. This may result in them delaying seeking treatment. That is a great mistake, symptoms of heart attack video.
Heart attack is one instance where getting treatment promptly can mean the difference between life and death. If you are in doubt, err on the side of being more cautious and go to the emergency room and get yourself checked. We will try to describe some of the most common characteristics of heart attack here. Before that we will introduce the other pain called angina which is often precursor to a heart attack, symptoms of heart attack video.
source:www.holisticonline.com
Obesity and type 2 diabetes
Obesity
Four out of five Type 2 diabetics are obese. Excess abdominal fat contributes to insulin resistance and increases lipid levels and the risk of other cardiovascular complications. Because being overweight makes it difficult to control diabetes and its related ills, it's important to achieve and maintain a healthy weight. Regular exercise can help diabetics reach this goal.
Four out of five Type 2 diabetics are obese. Excess abdominal fat contributes to insulin resistance and increases lipid levels and the risk of other cardiovascular complications. Because being overweight makes it difficult to control diabetes and its related ills, it's important to achieve and maintain a healthy weight. Regular exercise can help diabetics reach this goal.
Health-related complications of type 2 diabetics
Health-related complications
Conditions prevalent in Type 2 diabetics are macrovascular diseases such as hyperlipidemia (elevated lipids), hypertension (high blood pressure), obesity, and atherosclerosis (arterial disease). Microvascular diseases such as retinopathy (eye disease), nephropathy (kidney disease), and neuropathy (nerve disease) also afflict .
The primary goal in treating diabetes is to normalize glucose metabolism and to postpone or prevent complications.
Conditions prevalent in Type 2 diabetics are macrovascular diseases such as hyperlipidemia (elevated lipids), hypertension (high blood pressure), obesity, and atherosclerosis (arterial disease). Microvascular diseases such as retinopathy (eye disease), nephropathy (kidney disease), and neuropathy (nerve disease) also afflict .
The primary goal in treating diabetes is to normalize glucose metabolism and to postpone or prevent complications.
Type 2 Diabetes Mellitus
Type 2 diabetes is a disorder that impedes glucose, protein and fat metabolism. In healthy individuals, insulin (produced naturally in the body) helps convert food into energy. In Type 2 diabetics, cells become insensitive to insulin action and cannot convert glucose into energy. As a result, glucose levels rise and the pancreas increases insulin production in a futile attempt to compensate. This condition is known as hyperglycemia.
Type 2 diabetes is the most common form of diabetes, occurring in ninety to ninety-five percent of the diabetic population. Diabetes is diagnosed when blood glucose levels are measured at a minimum of 126 mg/dl or more on at least two occasions. People with the condition must carefully control their food intake and energy expenditure to keep blood sugar within safe levels.
Type 2 diabetes is the most common form of diabetes, occurring in ninety to ninety-five percent of the diabetic population. Diabetes is diagnosed when blood glucose levels are measured at a minimum of 126 mg/dl or more on at least two occasions. People with the condition must carefully control their food intake and energy expenditure to keep blood sugar within safe levels.
type 1 and type 2 diabetes
Researchers believe that almost all of the new diagnoses will be type 2, or adult-onset diabetes. This type of diabetes accounts for 90% to 95% of all cases and usually develops after age 40. Type 1 diabetes, caused by a severe deficiency of insulin, is more extreme and develops in childhood or adolescence. Patients with type 2 diabetes tend to be overweight as well as have high blood pressure and other risk factors for heart disease, as compared with patients with type 1. High blood sugar in people with type 2 diabetes is caused by an improper use of insulin or the inability to make enough insulin to metabolize glucose and control its levels in the blood.
Patients with type 1 diabetes need to take shots of insulin to control the disease. Patients with type 2 diabetes don’t always need drugs. Many can combat the disease with weight loss, exercise, and diet modification. When these methods don’t work, other measures such as insulin shots or other oral medications are required. The American Diabetes Association estimates that of all type 2 patients, 10% to 20% are treated with diet and exercise, 30% to 40% with oral drugs, and 30% to 40% with shots of insulin or insulin combined with oral drugs.
The debate continues as to the benefits of earlier detection of the disease. Many experts believe that doctors in the U.S. are not aggressive enough in treating diabetes while others are very wary about the long-term effects of many of the drugs used to treat patients with type 2 diabetes. However, most experts agree with the new guidelines but believe that health professionals should first focus on diet, exercise, and weight loss in their treatment of diabetes, reserving medications for those individuals who do not adequately respond to such modifications.
The new guidelines have been endorsed by the Centers for Disease Control and Prevention, and the National Institute of Diabetes and Digestive and Kidney Diseases.
Diabetes is a common disease that is a major risk factor for heart attack, stroke, and other heart and blood vessel diseases. These complications can often be prevented or delayed if the diabetes is effectively treated. Therefore, these new guidelines are very important, as they have the potential to identify many more people as having diabetes and therefore in need of more active therapy
Patients with type 1 diabetes need to take shots of insulin to control the disease. Patients with type 2 diabetes don’t always need drugs. Many can combat the disease with weight loss, exercise, and diet modification. When these methods don’t work, other measures such as insulin shots or other oral medications are required. The American Diabetes Association estimates that of all type 2 patients, 10% to 20% are treated with diet and exercise, 30% to 40% with oral drugs, and 30% to 40% with shots of insulin or insulin combined with oral drugs.
The debate continues as to the benefits of earlier detection of the disease. Many experts believe that doctors in the U.S. are not aggressive enough in treating diabetes while others are very wary about the long-term effects of many of the drugs used to treat patients with type 2 diabetes. However, most experts agree with the new guidelines but believe that health professionals should first focus on diet, exercise, and weight loss in their treatment of diabetes, reserving medications for those individuals who do not adequately respond to such modifications.
The new guidelines have been endorsed by the Centers for Disease Control and Prevention, and the National Institute of Diabetes and Digestive and Kidney Diseases.
Diabetes is a common disease that is a major risk factor for heart attack, stroke, and other heart and blood vessel diseases. These complications can often be prevented or delayed if the diabetes is effectively treated. Therefore, these new guidelines are very important, as they have the potential to identify many more people as having diabetes and therefore in need of more active therapy
heart attack and diabetics
Type 2 Diabetics Should Be Treated as Heart Patients : Researchers have known that having type 2 (non-insulin-dependent) diabetes increases the risk of developing coronary heart disease. But is the risk so great that diabetics who have not had a heart attack need to be treated as if they had?
To find out, Dr. Steven M. Haffner of the University of Texas Health Science Center at San Antonio and colleagues examined the rate of heart attacks in Finland over 7 years among 1,373 nondiabetic subjects and 1,059 diabetic individuals. Some of the participants were heart patients, having suffered at least one heart attack before the study began.
Over the 7 years, between 18 to 20 percent of both diabetic patients who had not had a heart attack before the study and nondiabetic heart patients suffered an attack, the team reports in the July 23 New England Journal of Medicine, heart attack and diabetics research .
Only 3.5 percent of the nondiabetics who were also not heart patients had a heart attack. But almost half -- 45 percent -- of diabetic heart patients had an attack.
Diabetics who have not had a heart attack and nondiabetic heart patients should receive similar treatment for cardiac risk factors, such as high blood pressure, the authors conclude.
Preliminary results from the Insulin Resistance Atherosclerosis Study, also coauthored by Dr. Haffner, found that type 2 diabetics without coronary artery disease and nondiabetic subjects with it had about equally clogged arteries. According to the team: "[c]arotid-artery intimal-wall thickness was very similar in diabetic subjects without clinical coronary artery disease and nondiabetic subjects with clinical coronary artery disease."
Since many diabetic patients did not have signs of heart disease at the outset of the study, but developed it during the course of the study, researchers suggest that diabetics' arteries may develop blockages faster than those of nondiabetics.
Studies are needed on the benefits of interventions such as lipid-lowering drugs and antihypertensives for diabetics with no history of heart disease, authors say, heart attack and diabetics research.
To find out, Dr. Steven M. Haffner of the University of Texas Health Science Center at San Antonio and colleagues examined the rate of heart attacks in Finland over 7 years among 1,373 nondiabetic subjects and 1,059 diabetic individuals. Some of the participants were heart patients, having suffered at least one heart attack before the study began.
Over the 7 years, between 18 to 20 percent of both diabetic patients who had not had a heart attack before the study and nondiabetic heart patients suffered an attack, the team reports in the July 23 New England Journal of Medicine, heart attack and diabetics research .
Only 3.5 percent of the nondiabetics who were also not heart patients had a heart attack. But almost half -- 45 percent -- of diabetic heart patients had an attack.
Diabetics who have not had a heart attack and nondiabetic heart patients should receive similar treatment for cardiac risk factors, such as high blood pressure, the authors conclude.
Preliminary results from the Insulin Resistance Atherosclerosis Study, also coauthored by Dr. Haffner, found that type 2 diabetics without coronary artery disease and nondiabetic subjects with it had about equally clogged arteries. According to the team: "[c]arotid-artery intimal-wall thickness was very similar in diabetic subjects without clinical coronary artery disease and nondiabetic subjects with clinical coronary artery disease."
Since many diabetic patients did not have signs of heart disease at the outset of the study, but developed it during the course of the study, researchers suggest that diabetics' arteries may develop blockages faster than those of nondiabetics.
Studies are needed on the benefits of interventions such as lipid-lowering drugs and antihypertensives for diabetics with no history of heart disease, authors say, heart attack and diabetics research.
Subscribe to:
Posts (Atom)