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Related Concept Videos

ATP Driven Pumps II: P-type Pumps01:34

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The P-type pumps are a large family of integral membrane transporter ATPases. They are divided into five major types based on substrate specificity, from I to V.
A typical P-type pump has three cytosolic domains: nucleotide-binding (N), phosphorylation (P), and activator (A) domains. These domains are connected to the membrane-spanning helices by short amino acid segments. ATP hydrolysis and covalent phosphoenzyme intermediate formation are crucial parts of the catalytic cycle. At the highly...
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Concrete in large quantities can be pumped across long distances for placing in inaccessible sites. This system comprises a hopper that receives concrete from a mixer, a pump to propel the concrete, and pipelines that facilitate its delivery.
For direct-acting pumps, the concrete enters the pump via the inlet valve under the action of gravity and suction created by the movement of the piston. This concrete is then forced into the pipeline and out through the outlet valve by the forward movement...
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ATP Driven Pumps III: V-type Pumps01:30

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V-type pumps are ATP-driven pumps found in the vacuolar membranes of plants, yeast, endosomal and lysosomal membranes of animal cells, plasma membranes of a few specialized eukaryotic cells, and some prokaryotes. They are also known as the V1Vo-ATPase, that couple ATP hydrolysis to transport protons against a concentration gradient.
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Pascal's experimentally proven observations—that a change in pressure applied to an enclosed fluid is transmitted undiminished throughout the fluid and to the walls of its container—provide the foundations for hydraulics, one of the most important developments in modern mechanical technology.
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ATP-driven pumps, also known as transport ATPases, are integral membrane proteins. They have binding sites for ATP located on the membrane's cytosolic side and the ion-conducting domain in the transmembrane region. These pumps use the free energy released from ATP hydrolysis to move the solutes across cell membranes against an electrochemical gradient.
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The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation.
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Related Experiment Video

Updated: Nov 2, 2025

A Modeling and Simulation Method for Preliminary Design of an Electro-Variable Displacement Pump
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Blame it on the pump.

Kirk John Levins1, Mohamed Khan2, Thomas Drago3

  • 1Department of Anaesthesia, Intensive Care and Pain Medicine St. Vincent's University Hospital Dublin 4 Ireland.

Clinical Case Reports
|June 17, 2021
PubMed
Summary
This summary is machine-generated.

Intrathecal pumps can cause spinal symptoms. However, always consider a wide range of potential diagnoses when evaluating patients with these devices.

Keywords:
granulomahematologyintrathecal pumplymphomatransverse myelitis

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Area of Science:

  • Neurosurgery
  • Neurology
  • Pain Management

Background:

  • Intrathecal pumps are implanted devices delivering medication directly into the cerebrospinal fluid.
  • Spinal symptoms can arise from the presence or complications of intrathecal pumps.
  • Accurate diagnosis is crucial for effective patient management.

Observation:

  • A case is presented where spinal symptoms were initially considered related to the intrathecal pump.
  • Further investigation revealed alternative diagnoses beyond pump-related issues.

Findings:

  • The presented case highlights that symptoms attributed to intrathecal pumps may stem from other underlying conditions.
  • A broad differential diagnosis is essential for patients with intrathecal pumps presenting with spinal symptoms.

Implications:

  • Clinicians should not solely attribute spinal symptoms in patients with intrathecal pumps to the device itself.
  • Comprehensive diagnostic evaluation is necessary to ensure correct diagnosis and treatment.
  • This underscores the importance of considering all potential causes for neurological symptoms in patients with implanted devices.