Blood-Brain Barrier and Brain Tumor Drug Delivery
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Questions and Answers

What is primarily responsible for controlling the entry of blood circulating agents into the brain?

  • Pericytes
  • Astrocytes
  • Tight junctional complexes (correct)
  • Brain capillary endothelial cells
  • Which cellular microenvironment plays a crucial role in brain drug delivery and targeting?

  • Perelman School of Medicine
  • Astrocytes and pericytes only
  • Brain capillary endothelial cells only
  • BCECs, astrocytes, and pericytes (correct)
  • What type of transport machineries are used by BCECs to control the transportation process into the brain?

  • Passive diffusion only
  • Active transport only
  • Facilitated diffusion
  • Carrier and/or receptor mediated (correct)
  • What is the main function of the restrictive tight junctional complexes formed by BCECs?

    <p>Block the paracellular inward/outward traverse of biomolecules/compounds</p> Signup and view all the answers

    What makes brain drug delivery and targeting very challenging?

    <p>Excellent barrier restrictiveness of BBB</p> Signup and view all the answers

    What is the main purpose of designing intelligent molecular therapies mentioned in the text?

    <p>To enhance the delivery of designated drugs into the brain</p> Signup and view all the answers

    According to the passage, what contributes mainly to the protection of brain from undesired blood circulating agents?

    <p>Cellular architecture of BCECs</p> Signup and view all the answers

    Based on the text, what makes BBB impermeable to many compounds?

    <p>Tight junctional characteristics</p> Signup and view all the answers

    What is a central step for engineering of intelligent seamless therapeutics, as mentioned in the passage?

    <p>Fully understanding the biofunctions of BBB</p> Signup and view all the answers

    What do BCECs show different features in comparison with peripheral endothelial cells?

    <p>Selective barrier functionalities</p> Signup and view all the answers

    Blood brain barrier (BBB) allows free passage of biomolecules and compounds into the brain

    <p>False</p> Signup and view all the answers

    Brain capillary endothelial cells (BCECs) form unique biological structure and architecture in association with astrocytes and pericytes

    <p>True</p> Signup and view all the answers

    BCECs express non-restrictive tight junctional complexes that allow free paracellular inward/outward traverse of biomolecules/compounds

    <p>False</p> Signup and view all the answers

    The transportation process through carrier and/or receptor mediated transport machineries is not controlled by BCECs

    <p>False</p> Signup and view all the answers

    BBB restrictiveness makes brain drug delivery and targeting easy

    <p>False</p> Signup and view all the answers

    Intelligent molecular therapies should be designed using transport machineries for the efficient delivery of designated drugs into the brain.

    <p>True</p> Signup and view all the answers

    The main purpose of smart pharmaceuticals is to provide simultaneous imaging and therapy (multimodal theranostics).

    <p>True</p> Signup and view all the answers

    The exceptional functional presence of BBB is responsible for controlling inward and outward transportation mechanisms.

    <p>True</p> Signup and view all the answers

    The permeability of BBB appears to be regulated by a range of intricate transport machineries located at the membrane of the BCECs.

    <p>True</p> Signup and view all the answers

    The tight junctional characteristics of BCECs make BBB permeable to many compounds.

    <p>False</p> Signup and view all the answers

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