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Related Concept Videos

Oral Hypoglycemic Agents: α-Glucosidase Inhibitors01:19

Oral Hypoglycemic Agents: α-Glucosidase Inhibitors

α-glucosidase inhibitors, including acarbose (Precose), miglitol (Glyset), and voglibose (Voglib) (primarily available in Asia), are drugs that control blood sugar levels by delaying the digestion of starch and disaccharides. They achieve this by inhibiting α-glucosidase enzymes in the intestine, which slow the absorption of carbohydrates in the intestine, which in turn leads to a prolonged release of the glucoregulatory hormone GLP-1 from intestinal L-cells.
Acarbose and miglitol are typically...
Chemotherapy-Induced Nausea and Vomiting: 5-HT3 Receptor Antagonists01:27

Chemotherapy-Induced Nausea and Vomiting: 5-HT3 Receptor Antagonists

5-HT3 receptor antagonists, such as dolasetron, granisetron (Kytril), ondansetron (Zofran), and palonosetron (Axoli), are crucial in managing chemotherapy-induced nausea and vomiting (CINV) and postoperative nausea. These drugs selectively block 5-HT3 receptors in the visceral vagal and spinal afferent nerves, chemoreceptor trigger zone, and the vomiting center. They have a rapid onset of action and can be given as a single dose before chemotherapy. Ondansetron and granisetron, in particular,...
Oral Hypoglycemic Agents: Biguanides and Glitazones01:26

Oral Hypoglycemic Agents: Biguanides and Glitazones

Biguanides, particularly metformin (Glucophage), are insulin sensitizers that enhance glucose uptake, thereby reducing insulin resistance. Unlike sulfonylureas, metformin doesn't prompt insulin secretion, which helps to curb hypoglycemia risk. Metformin is beneficial in treating conditions like polycystic ovary syndrome due to its insulin-resistance reduction capability. The drug's primary action involves curtailing hepatic gluconeogenesis, a significant contributor to high blood glucose levels...
Heart Failure Drugs: Inhibitors of Renin-Angiotensin System01:26

Heart Failure Drugs: Inhibitors of Renin-Angiotensin System

The activation of the sympathetic nervous system and the renin-angiotensin-aldosterone system (RAAS) contributes to cardiac remodeling, and inhibiting the RAAS is a pharmacological target in heart failure management. As a result, neurohumoral modulation is a crucial treatment principle for managing heart failure. This approach involves using medications like ACE inhibitors (ACEIs), angiotensin receptor blockers (ARBs), β-blockers, mineralocorticoid receptor antagonists (MRAs), and neutral...
Lipid-Lowering Drugs: Statins and Miscellaneous Agents01:20

Lipid-Lowering Drugs: Statins and Miscellaneous Agents

Hyperlipidemia, a medical condition often referred to as high cholesterol, is characterized by abnormally elevated levels of lipids in the bloodstream. When present in excess, these lipids, specifically cholesterol and triglycerides, can lead to serious health complications, often involving cardiovascular diseases. Illnesses like atherosclerosis, heart attacks, and pancreatitis have all been linked to untreated hyperlipidemia. This means controlling and regulating cholesterol and triglyceride...
Acid Suppressive Drugs for Peptic Ulcer Disease: Histamine H2-Receptor Antagonists01:28

Acid Suppressive Drugs for Peptic Ulcer Disease: Histamine H2-Receptor Antagonists

Histamine H2 receptors, which are intricately located on the basolateral membrane of parietal cells, play a crucial role in modulating gastric acid secretion. When released from enterochromaffin-like cells, histamine engages H2 receptors, initiating the cyclic AMP (cAMP) pathway. In this pathway, adenylyl cyclase converts ATP into cAMP, elevating intracellular cAMP levels. The activation of protein kinase A follows, stimulating the proton pump. This stimulation prompts the secretion of hydrogen...

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Related Experiment Video

Updated: Jul 19, 2026

Estrogen-Like Effect of Bazi Bushen Capsule in Ovariectomized Rats
08:56

Estrogen-Like Effect of Bazi Bushen Capsule in Ovariectomized Rats

Published on: April 7, 2023

Aromatase inhibitors and bone loss.

Edith A Perez1, Katherine Weilbaecher

  • 1Divison of Hematology/Oncology, Mayo Clinic, Jacksonville, Florida 32224, USA. perez.edith@mayo.edu

Oncology (Williston Park, N.Y.)
|September 22, 2006
PubMed
Summary

Aromatase inhibitors (AIs) are more effective than tamoxifen for early breast cancer recurrence but cause bone loss. Bisphosphonates can prevent this bone loss, but potential side effects require careful consideration.

Area of Science:

  • Oncology
  • Endocrinology
  • Pharmacology

Background:

  • Aromatase inhibitors (AIs) like anastrozole, letrozole, and exemestane are superior to tamoxifen in preventing recurrence for estrogen receptor-positive early breast cancer.
  • AIs are increasingly used as first-line adjuvant therapy, but are linked to increased osteoporotic fractures and bone mineral density loss.

Purpose of the Study:

  • To review the efficacy and safety of bisphosphonates in managing AI-induced bone loss.
  • To provide guidance on bisphosphonate use in patients receiving AI therapy for breast cancer.

Main Methods:

  • Review of clinical practice guidelines and evidence on bisphosphonate use.
  • Discussion of bone density monitoring and lifestyle modifications.
  • Analysis of bisphosphonate adverse events.

Related Experiment Videos

Last Updated: Jul 19, 2026

Estrogen-Like Effect of Bazi Bushen Capsule in Ovariectomized Rats
08:56

Estrogen-Like Effect of Bazi Bushen Capsule in Ovariectomized Rats

Published on: April 7, 2023

Main Results:

  • Bisphosphonates are effective in preventing postmenopausal osteoporosis, cancer treatment-related bone loss, and skeletal complications.
  • Guidelines recommend baseline and annual bone density monitoring for patients on AIs.
  • Bisphosphonate therapy is recommended for osteoporosis and considered for osteopenia.

Conclusions:

  • Bisphosphonates can mitigate AI-associated bone loss, improving outcomes for breast cancer patients.
  • Careful risk-benefit assessment is necessary due to potential bisphosphonate toxicities like gastrointestinal and renal issues, and osteonecrosis of the jaw.