Caseation And Cavitation
Caseation And Cavitation - Related Videos
14:22
Activating Molecules, Ions, and Solid Particles with Acoustic Cavitation
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Cited by 6 •
2014
Acoustic cavitation in liquids submitted to power ultrasound creates transient extreme conditions inside the collapsing bubbles, which are the origin of unusual chemical reactivity and light emission, known as sonoluminescence. In the presence of noble gases, nonequilibrium plasma is formed. The "hot" particles and the photons generated by collapsing bubbles are able to excite species in solution.
08:24
Nitrogen Cavitation and Differential Centrifugation Allows for Monitoring the Distribution of Peripheral Membrane Proteins in Cultured Cells
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Cited by 15 •
2017
Here we present protocols for detergent-free homogenization of cultured mammalian cells based on nitrogen cavitation and subsequent separation of cytosolic and membrane-bound proteins by ultracentrifugation. This method is ideal for monitoring the partitioning of peripheral membrane proteins between soluble and membrane fractions.
11:14
A Microfluidic System with Surface Patterning for Investigating Cavitation Bubble(s)–Cell Interaction and the Resultant Bioeffects at the Single-cell Level
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Cited by 8 •
2017
A microfluidic chip was fabricated to produce pairs of gold dots for tandem bubble generation and fibronectin-coated islands for single-cell patterning nearby. The resultant flow field was characterized by particle image velocimetry and was employed to study various bioeffects, including cell membrane poration, membrane deformation, and intracellular calcium response.
07:36
Studying Cavitation Enhanced Therapy
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Cited by 6 •
2021
The presented experimental protocol can be used to perform real time measurements of cavitation activity in a cell culture device with the aim of enabling investigation of the conditions required for successful drug delivery and/or other bioeffects.
08:19
Controllable Nucleation of Cavitation from Plasmonic Gold Nanoparticles for Enhancing High Intensity Focused Ultrasound Applications
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Cited by 4 •
2018
This protocol demonstrates the controllable nucleation of cavitation in gel phantoms, through simultaneous exposure to both near-infrared pulsed laser light and high intensity focused ultrasound (HIFU). The cavitation activity can then be used for enhancing imaging and/or therapeutic uses of HIFU.
FAQs
Liquefaction transforms a relatively solid focus of necrotic material into contents that can drain through an airway. Once drainage occurs, the emptied region remains as a cavity rather than simply retaining caseous debris. This progression matters because it creates a space that can communicate with the bronchial tree, linking tissue destruction to respiratory symptoms and potential spread.
A cavity that communicates with the bronchial tree can expose its contents to the airways. Because these lesions may contain large numbers of Mycobacterium tuberculosis, airway communication increases the clinical importance of coughing and supports concern about airborne transmission. The finding therefore has implications beyond local tissue damage, particularly when assessing infectiousness.
Caseation reflects tissue destruction driven by the host immune response to infection, followed by accumulation of necrotic cellular debris. The resulting lesion is therefore not explained only by the presence of organisms; it also records the extent of immune-associated tissue injury. Recognizing this relationship helps connect pathological appearance with the destructive nature of pulmonary disease.
These destructive lesions can contribute to cough and hemoptysis because they affect infected pulmonary tissue and may communicate with the bronchial tree. The symptoms should be interpreted alongside imaging and pathological findings rather than in isolation. Their presence can reinforce concern that the disease has produced clinically significant tissue destruction and airway involvement.
Radiographic assessment can help identify the presence and extent of destructive pulmonary change, including a hollow cavity arising after caseous material has drained. In clinical evaluation, these findings support assessment of disease severity and complications. They also provide a basis for comparison during follow-up, helping clinicians judge whether the structural abnormalities change with treatment.
Pathological findings demonstrate the underlying tissue process, including caseous necrosis and accumulated cellular debris, while imaging shows the resulting structural abnormality in the lung. Considering both perspectives helps clinicians relate microscopic destruction to the visible lesion. This combined interpretation can improve assessment of disease severity and clarify whether a cavity represents progression from caseating tissue.
Caseation and cavitation provide structural markers that can be followed as part of evaluating pulmonary tuberculosis. Clinicians can compare radiographic appearances over time with the pathological context of tissue destruction. Although the lesions also signal infectiousness and possible complications, changes in their appearance contribute to judging whether disease-related abnormalities are improving, persisting, or remaining clinically significant.