[Multidrug resistance]

G H Mickisch1

  • 1Urologische Klinik, Klinikum Dijkzigt, Erasmus Universität Rotterdam.

Der Urologe. Ausg. A
|September 1, 1996
PubMed

Insights

Genetic techniques have illuminated cancer cell drug resistance mechanisms, revealing insights into tumor physiology and potential strategies to reverse chemoresistance in urologic malignancies.

Area of Science:

  • Oncology
  • Genetics
  • Pharmacology

Background:

  • Genetic techniques have advanced the understanding of cancer cell phenotypes over the past decade.
  • Elucidating drug resistance mechanisms offers new insights into tumor physiology.

Purpose of the Study:

  • To analyze the role of defined multidrug resistance factors in urologic malignancies.
  • To explore therapeutic options for reversing clinical chemoresistance.

Main Methods:

  • Experimental characterization of specific multidrug resistance factors.
  • Analysis of genes involved in resistance to anticancer agents.
  • Initiation of clinical studies based on these findings.

Main Results:

  • Comprehensive characterization of key multidrug resistance factors (e.g., P-glycoprotein, topoisomerase) in urologic cancers.
  • Identification of novel information regarding tumor physiology related to drug resistance.

Conclusions:

  • Understanding drug resistance mechanisms can lead to new therapeutic strategies.
  • These findings are expected to significantly impact future urologic anticancer treatment strategies.

Related Concept Videos

Mismatch Repair01:36

Mismatch Repair

Overview
Antibiotic Selection00:57

Antibiotic Selection

Overview
Treatment Resistant Cancers02:56

Treatment Resistant Cancers

Cancer is the second leading cause of death in the United States. A cancer cell is genetically unstable and hence can mutate faster. They can also modify their microenvironment and escape immune surveillance. The difficulties in treating cancer are further compounded by the emergence of rapid resistance to anticancer drugs. The most common ways to attain resistance in cancer cells include alteration in drug transport and metabolism, modification of drug target, elevated DNA damage response, or...
Development of Antibiotic Resistance01:30

Development of Antibiotic Resistance

Antibiotic resistance is a major public health concern that arises when bacteria evolve mechanisms to withstand the effects of antibiotic treatments. This resistance can be intrinsic, acquired through genetic mutations, or transferred between bacteria via horizontal gene transfer. The development of antibiotic resistance poses significant challenges in treating bacterial infections and necessitates ongoing research to develop new therapeutic strategies.Intrinsic resistance occurs when bacterial...
Mechanism of Antibiotic Resistance in MRSA01:25

Mechanism of Antibiotic Resistance in MRSA

Antibiotic resistance in bacteria arises when microorganisms evolve the ability to withstand drugs designed to kill them or inhibit their growth, rendering once-effective treatments useless. This phenomenon, driven by genetic change and selection under antibiotic exposure, poses a profound threat to modern medicine. Mechanisms include drug-inactivating enzymes (e.g., β-lactamases), efflux pumps that eject antibiotics, mutations altering antibiotic targets, decreased drug uptake, and acquisition...
Clinical Significance of Antibiotic Resistance01:25

Clinical Significance of Antibiotic Resistance

Methicillin-resistant Staphylococcus aureus (MRSA) presents a critical public health threat, arising from its capacity to resist β-lactam antibiotics due to acquisition of the mecA gene within the staphylococcal cassette chromosome mec (SCCmec). This gene encodes penicillin-binding protein 2a (PBP2a), which impairs binding efficacy of methicillin and other β-lactams. MRSA has evolved into distinct clonal lineages impacting humans and animals alike, reinforcing its significance within the One...