Diseases and Treatment: VI. Deficiency, Non-Contagious and Other Diseases Part-II

Total Questions: 18

1. Which one of the following diseases cannot be controlled by vaccination? [U.P.P.C.S. (Mains) 2005]

Correct Answer: (a) Diabetes
Solution:Polio, whooping cough, and smallpox can be controlled by vaccination, but there is no vaccination available for diabetes. Diabetes is related to the pancreas and is caused by insufficient insulin in the blood.

Currently, there is no vaccine available to prevent Type 1 diabetes, which is an autoimmune disease where the body attacks the insulin-producing cells in the pancreas. Researchers are actively working on developing vaccines, especially for Type 1 diabetes, by targeting specific proteins involved in the immune response.

Most diabetes vaccine research is conducted using animal models, with only a few human trials having been completed. The current focus of vaccine research is primarily on preventing Type 1 diabetes, with less emphasis on Type 2 diabetes, which is more prevalent. Some vaccines, like the rotavirus vaccine, have been linked to a potential decrease in the incidence of Type 1 diabetes in children, but this is an indirect effect rather than a direct prevention.

2. Diabetes is caused due to malfunctioning of: [U.P. Lower Sub. (Mains) 2015]

Correct Answer: (a) Pancreas
Solution:Diabetes is a chronic disease that occurs when the pancreas can no longer make insulin, or the body cannot make good use of the insulin it produces. Insulin is a hormone that regulates blood glucose. Not being able to produce or use insulin effectively leads to raised glucose levels in the blood, known as hyperglycaemia. Over the long-term high glucose levels are associated with damage to the body and failure of various organs and tissues. Diabetes is a major cause of blindness, kidney failure, heart attacks, stroke, and lower limb amputation.

3. Lack of which substance causes diabetes in a person? [44th B.P.S.C. (Pre) 2000]

Correct Answer: (d) Insulin
Solution:Insulin, produced in the pancreas, regulates blood glucose by facilitating glucose usage or storage. Lack of insulin causes diabetes, leading to excess urination (polyuria).

When blood glucose levels rise (e.g., after eating), the pancreas releases insulin. Insulin acts as a "key" that opens up cells, allowing them to absorb glucose from the bloodstream. Cells then use this glucose as their primary energy source. If the body has more glucose than it needs for immediate energy, insulin promotes the storage of excess glucose as glycogen in the liver and muscles. Glycogen is a complex carbohydrate that can be broken down into glucose when the body needs it.

Insulin helps to keep blood glucose levels within a healthy range by facilitating both glucose uptake for energy and glucose storage when needed. This prevents blood glucose levels from becoming too high (hyperglycemia) or too low (hypoglycemia). In individuals with diabetes, either the pancreas doesn't produce enough insulin (type 1 diabetes) or the body's cells don't respond properly to insulin (type 2 diabetes), leading to high blood glucose levels.

4. Which of the following are associated with diabetes mellitus, a common disease in adults? [I.A.S. (Pre) 1996]

  1. Higher sugar level in blood
  2. Lower sugar level in blood
  3. Lower insulin level in blood
  4. Higher insulin level in blood
Correct Answer: (d) 1 and 3
Solution:DM is a disorder in which the body does not produce enough or respond normally to insulin, causing blood sugar (glucose) levels to be abnormally high. The name Diabetes Mellitus is often used rather than diabetes alone, to distinguish this disorder from Diabetes Insipidus.

Diabetes insipidus is a relatively rare disorder that does not affect blood glucose levels but, just like diabetes mellitus, causes increased urination. While 70-110 mg/dL fasting blood glucose is considered normal, blood glucose levels between 100 and 125 mg/dL is considered prediabetes, and 126 mg/dL or higher is defined as diabetes.

5. Measurement of glycosylated haemoglobin (HbA1c) in the blood is useful for the management of: [U.P. B.E.O. (Pre) 2019]

Correct Answer: (c) Diabetes mellitus
Solution:The HbA1c test measures long-term blood glucose management in diabetes mellitus, reflecting the average blood sugar level over the past 8-12 weeks.

DM is a disorder in which the body does not produce enough or respond normally to insulin, causing blood sugar (glucose) levels to be abnormally high. The name Diabetes Mellitus is often used rather than diabetes alone, to distinguish this disorder from Diabetes Insipidus.

Diabetes insipidus is a relatively rare disorder that does not affect blood glucose levels but, just like diabetes mellitus, causes increased urination. While 70-110 mg/dL fasting blood glucose is considered normal, blood glucose levels between 100 and 125 mg/dL is considered prediabetes, and 126 mg/dL or higher is defined as diabetes.

6. Assertion (A): The person with diabetes insipidus feels thirsty. [I.A.S. (Pre) 2005]

Reason (R): A person with diabetes insipidus suffers from excess secretion of vasopressin.

Correct Answer: (c) (A) is true, but (R) is false.
Solution:Diabetes insipidus is caused by insufficient vasopressin (ADH), leading to excessive urination and thirst, not excess secretion.

Diabetes is a chronic disease that occurs when the pancreas can no longer make insulin, or the body cannot make good use of the insulin it produces. Insulin is a hormone that regulates blood glucose. Not being able to produce or use insulin effectively leads to raised glucose levels in the blood, known as hyperglycaemia. Over the long-term high glucose levels are associated with damage to the body and failure of various organs and tissues. Diabetes is a major cause of blindness, kidney failure, heart attacks, stroke, and lower limb amputation.

7. Assertion (A): Drinking whiskey increases the frequency of urination. [I.A.S. (Pre) 2002]

Reason (R): Alcohol intake speeds up the secretion of vasopressin in the body.

Correct Answer: (c) (A) is true, but (R) is false.
Solution:Drinking of whiskey increases the frequency of urination because it behaves like a diuretic substance that increases urine production in the body. Alcohol also suppresses secretion of pituitary gland hormone vasopressin (ADH), which is responsible for inhibiting the diuretic effect. This makes our kidneys unable to reabsorb as much liquid as usual, resulting in a substantial increase in urine output.

8. Which one of the following seeds can benefit a patient of diabetes mellitus by normalizing his blood sugar level? [I.A.S. (Pre) 1993]

Correct Answer: (d) Fenugreek seeds
Solution:Fenugreek seeds slow the absorption of sugar in the stomach and stimulate insulin. They lower blood sugar and are beneficial for cholesterol and triglyceride levels. Fenugreek also helps in digestion and is used in the treatment of breast and colon cancer.

9. Curry leaf tree, native to India, has the potential of a multi-billion dollar production for pharmaceutical companies as revealed by British researchers. A cure for which disease is claimed for the curry leaf? [U.P.P.C.S. (Mains) 2004]

Correct Answer: (c) Diabetes
Solution:The curry leaf tree is beneficial for diabetes treatment. Diabetes results from a lack of insulin hormone. Curry leaf contains antioxidants like vitamin, beta-carotene and carbazole alkaloids that are said to hinder a range of diseases linked to oxidative damage from free radicals, of which type-2 diabetes tops the list. Curry leaf is said to be rich in fibre content. Fibre is responsible for slowing down digestion and does not metabolise quickly, which keeps your blood sugars in check.Curry leaf tends to boost your insulin activity and when the body is enabled to use insulin properly, blood sugar levels get stabilised.

According to the study published in DiePharmazie - an International Journal of Pharmaceutical Sciences - the anti-hyperglycaemic properties of the leaves were shown to be effective controlling blood glucose levels in diabetic rats. It has compounds that slow down the rate of starch-to-glucose breakdown in people with diabetes. Curry leaves can control the amount of glucose entering the bloodstream.

10. The hormone insulin, used in treating diabetes, was discovered by: [Uttarakhand P.C.S. (Pre) 2006]

Correct Answer: (a) F.G. Banting
Solution:Canadian scientists Banting & Best prepared an active infusion of insulin in 1923, with Macleod. Banting & Macleod won the Nobel Prize in 1923 for this discovery.