GLP-1s (Glucagon-Like Peptide-1 Receptor Agonists)

GLP-1s (Glucagon-Like Peptide-1 Receptor Agonists)

GS: GS PAPER III — Health, Medicine & Biotechnology

Class of medicines for Type 2 Diabetes and obesity. Mimic natural GLP-1 hormone. Regulate insulin, suppress appetite, slow gastric emptying. Examples: Semaglutide, Liraglutide.

Key Points to Remember

• Definition: Class of medicines (GLP-1 receptor agonists) used for Type 2 Diabetes and obesity treatment.
• Natural Hormone: Mimic Glucagon-Like Peptide-1 (GLP-1), incretin hormone naturally released by intestine after meals.
• Mechanism: Stimulate insulin secretion (when glucose high), suppress glucagon (reduce liver glucose production), slow gastric emptying (prolonged satiety), reduce appetite (promote weight loss).
• Major Uses: Type 2 Diabetes management, obesity/overweight treatment, reduce cardiovascular event risk in high-risk diabetic patients.
• Examples: Semaglutide, Liraglutide, Dulaglutide, Exenatide, Tirzepatide (dual GIP/GLP-1 agonist).
• Common Side Effects: Nausea, vomiting, diarrhoea, abdominal discomfort; rare risks include pancreatitis, gallbladder disease.
• Significance: Transformed diabetes and obesity management by addressing both blood sugar control and weight reduction.

Exam Significance

• Tests knowledge of modern pharmacological treatments for metabolic diseases.
• Important for understanding mechanism of action of drug classes.
• Relevant for questions on obesity and diabetes epidemiology in India.
• Examines distinctions between Type 1 and Type 2 Diabetes treatment approaches.

Prelims MCQ Practice

With reference to GLP-1 receptor agonists (GLP-1s), consider the following statements: 1. They stimulate insulin secretion only when blood glucose levels are elevated. 2. They delay gastric emptying and help reduce appetite. 3. They are primarily used for the treatment of Type 1 Diabetes Mellitus.

(a) 1 and 2 only

(b) 2 and 3 only

(c) 1 only

(d) 1, 2 and 3

Answer: (a)

Statement 1 is correct — GLP-1s stimulate glucose-dependent insulin secretion, reducing hypoglycaemia risk. 2nd Statement is correct — they slow gastric emptying and suppress appetite, contributing to weight loss. Statement 3 is incorrect — mainly approved for Type 2 Diabetes Mellitus and obesity, not as primary therapy for Type 1 Diabetes.

Key Takeaways for UPSC Prelims

Quick Recall Points

• Article 19: Freedoms of speech, assembly, association, movement, residence, profession — all subject to reasonable restrictions.
• Article 21: Right to life includes right to dignity, privacy, and State’s duty to protect fundamental interests.
• Article 51A: Fundamental Duties bind every citizen — respect Constitution, national symbols, sovereignty.
• Hunger Strike: Protected as protest under Arts 19 & 21, but State can intervene if life endangered.
• National Symbols: Flag (Tricolour), Anthem (Jana Gana Mana), Song (Vande Mataram), Constitution — all legally protected.
• Green Hydrogen: Produced via renewable energy + water electrolysis. Cleanest, most sustainable form.
• GLP-1s: Glucose-dependent insulin stimulation (safe), slows stomach emptying, reduces appetite — dual action for diabetes & obesity.

All topics cover high-yield Prelims concepts. Focus on MCQ options carefully — statement accuracy and constitutional links are key.