Related Experiment Video
Updated: Jan 24, 2026
23:06
The MODS method for diagnosis of tuberculosis and multidrug resistant tuberculosis
Published on: August 11, 2008
19.6K
What will it take to eliminate drug-resistant tuberculosis?
E A Kendall1, S Sahu2, M Pai3
1Johns Hopkins University, Baltimore, Maryland, USA.
Summary
Stopping new drug-resistant tuberculosis (DR-TB) and addressing the current epidemic are crucial. Universal molecular testing, improved treatments, and early detection strategies are key to global DR-TB elimination efforts.
Area of Science:
- Public Health
- Infectious Diseases
- Microbiology
Background:
- Drug-resistant tuberculosis (DR-TB) presents significant global health challenges in diagnosis, treatment, and prevention.
- The ongoing DR-TB epidemic requires urgent and multifaceted interventions to curb its spread and impact.
Purpose of the Study:
- To outline essential strategies for the global elimination of drug-resistant tuberculosis.
- To emphasize the need for preventing new DR-TB cases and improving outcomes for existing ones.
Main Methods:
- Implementing universal molecular testing for rapid detection of first-line drug resistance at initial TB diagnosis.
- Improving DR-TB treatment outcomes through effective use of existing, new, and repurposed drugs with patient-centered care.
- Enhancing diagnostic and monitoring systems for second-line and novel drugs, alongside preventive measures like airborne infection control and contact tracing.
Main Results:
- Early detection and prevention strategies, including airborne infection control and preventive therapy for contacts, are vital.
- Innovations like point-of-care susceptibility testing and novel short regimens can accelerate treatment progress.
- Substantial global investment and political commitment are necessary for DR-TB elimination.
Conclusions:
- Achieving global elimination of DR-TB is attainable through comprehensive strategies addressing prevention, diagnosis, and treatment.
- Investing in DR-TB elimination is cost-effective and requires sustained political and societal commitment.
- Combating DR-TB is essential for global tuberculosis elimination efforts.
Related Concept Videos
01:17Kinetics of Drug Elimination
4.1K
Eliminating drugs from the body is a vital process that occurs through excretion or metabolism. Understanding the kinetics of drug elimination is crucial for drug development, dosage determination, and optimizing patient outcomes.
Drug clearance depends on the rate of drug elimination and its plasma concentration. Another important parameter is the half-life of a drug, which is the time required for its concentration to decrease by half. In most cases, drug clearance follows first-order...
Drug clearance depends on the rate of drug elimination and its plasma concentration. Another important parameter is the half-life of a drug, which is the time required for its concentration to decrease by half. In most cases, drug clearance follows first-order...
4.1K
01:18Drug Elimination: Overview
2.5K
Drug elimination involves many complex processes and does not necessarily differentiate between distribution and elimination. It is divided into two primary components: excretion and biotransformation.
Excretion refers to removing a drug from the body, either in its unchanged form or as its metabolites. Nonvolatile and polar drugs are primarily excreted through the kidneys, with other pathways including bile, sweat, saliva, and milk. Volatile drugs such as anesthetic gases are excreted via the...
Excretion refers to removing a drug from the body, either in its unchanged form or as its metabolites. Nonvolatile and polar drugs are primarily excreted through the kidneys, with other pathways including bile, sweat, saliva, and milk. Volatile drugs such as anesthetic gases are excreted via the...
2.5K
01:23Drug Elimination: Non-Renal Routes
3.2K
The liver plays a pivotal role in eliminating drugs and their metabolites, primarily through a process known as biliary excretion. This process involves the hepatocytes, the primary cells in the liver that generate bile. A range of transporters actively expels polar drugs or hydrophilic drug metabolites into the bile, which transports the drugs and metabolites into the small intestine. From here, they are eventually expelled from the body through feces. In some instances, the original drug or a...
3.2K
01:06Drug Elimination: The Concept of Clearance
3.9K
Drug elimination refers to removing drugs from the body, either through urine by the kidneys or through bile by the liver. Drug clearance is a pharmacokinetic parameter that measures the efficiency of drug removal from the bloodstream within a specific time frame. It is calculated as the rate at which a drug is eliminated from plasma divided by the plasma concentration of the drug.
Drug clearance is not limited to renal excretion but encompasses all organs involved in drug elimination,...
Drug clearance is not limited to renal excretion but encompasses all organs involved in drug elimination,...
3.9K
01:24Factors Influencing Drug Absorption: Presystemic Elimination
847
The pharmacokinetic journey of oral drugs begins with a crucial first pass through the hepatic portal system, called the first-pass effect. This first pass significantly impacts bioavailability — the proportion of a drug that enters systemic circulation and is available for therapeutic action. The primary route sees the drug absorbed by intestinal membranes and then shunted to the liver via the hepatic portal vein. Here, pre-systemic elimination occurs as drugs face metabolism or biliary...
847
01:22Drug Elimination by Renal Route: Tubular Reabsorption
4.9K
During the process of renal excretion, as the glomerular filtrate progresses to the distal convoluted tubule (DCT), drugs that are highly permeable, lipophilic, and nonionized undergo passive reabsorption from the tubular fluid into the surrounding peritubular capillaries. This reabsorption process restricts their elimination through the kidneys. However, the majority of drugs are either weak acids or weak bases, and their ionization level is dependent on pH. By altering the pH of urine, the...
4.9K