Acid Fast Staining | Microbiology in Marathi

 Acid Fast Staining | Microbiology In Marathi 




🔸 Presentation


Corrosive quick staining is a microbiological strategy used to distinguish specific sorts of microscopic organisms, especially mycobacteria, which have a waxy cell wall containing mycolic acids. This staining technique recognizes corrosive quick creatures from non-corrosive quick life forms in view of their capacity to hold the essential stain, carbol fuchsin, even subsequent to being washed with corrosive liquor.

The interaction commonly includes three fundamental stages: applying the essential stain, decolorizing with corrosive liquor, and counterstaining with methylene blue. Corrosive quick microorganisms, like Mycobacterium tuberculosis, hold the red shade of the carbol fuchsin, while non-corrosive quick microbes take up the blue counterstain.

This procedure is vital in clinical microbial science for diagnosing contaminations like tuberculosis and sickness, as well with respect to distinguishing mycobacterial species in lab settings. Its capacity to separate these microorganisms is indispensable for proper treatment and general wellbeing measures.


🔸 History

The improvement of corrosive quick staining methods has a rich history attached to the revelation and comprehension of mycobacterial diseases.

1. Early Revelations (nineteenth Hundred years) :
   - The most important moves toward understanding corrosive quick microorganisms started with crafted by Robert Koch, who, in 1882, distinguished Mycobacterium tuberculosis as the causative specialist of tuberculosis. His work established the groundwork for bacteriology.

2. Presentation of Staining Strategies :
   - Following Koch's revelation, staining strategies were created to picture microorganisms under a magnifying lens. In 1884, Hans Christian Gram presented the Gram stain, however mycobacteria didn't answer well to this technique because of their exceptional cell wall structure.

3. Kinyoun Stain (1915) :
   - The main corrosive quick stain was presented by Joseph Kinyoun. He changed existing strategies to make a straightforward procedure that featured corrosive quick bacilli, working on the representation of mycobacteria.

4. Ziehl-Neelsen Stain (1883) :
   - All the while, Friedrich Ziehl and Friedrich Neelsen fostered a more compelling corrosive quick staining strategy that used carbol fuchsin and heat. This technique turned out to be broadly embraced and is frequently alluded to as the Ziehl-Neelsen stain.

5. Headways and Varieties :
   - Throughout the long term, varieties of the Ziehl-Neelsen procedure have been created, including the auramine-rhodamine stain, which involves fluorescent colors for upgraded representation under UV light.

6. Current Applications :
   - Today, corrosive quick staining stays a standard research center methodology for diagnosing tuberculosis and other mycobacterial contaminations, mirroring the persevering through meaning of these early disclosures in microbial science.

This authentic setting features the development of methods that have considered the viable ID of corrosive quick microorganisms, fundamentally affecting general wellbeing and microbiological research.


🔸 Rule

The rule of corrosive quick staining depends on the remarkable organization of the cell mass of specific microorganisms, especially mycobacteria. These microscopic organisms have a high lipid content, including mycolic acids, which makes their cell walls hydrophobic and impervious to customary staining strategies.

• Essential Staining: The interaction starts with applying an essential stain, normally carbol fuchsin, which infiltrates the cell mass of corrosive quick microorganisms. The application is frequently worked with by intensity to upgrade color take-up.

• Decolorization: Subsequent to staining, the slide is treated with a corrosive liquor arrangement. Corrosive quick microorganisms hold the carbol fuchsin because of their waxy cell walls, while non-corrosive quick microbes lose the essential stain and become dull.

• Counterstaining: A counterstain, regularly methylene blue, is then applied. Non-corrosive quick microorganisms take up this stain and seem blue, while corrosive quick microbes stay red from the held carbol fuchsin.


🔸 Reagents

Corrosive quick staining includes a few key reagents:

1. Carbol Fuchsin : This is the essential stain that enters the cell mass of corrosive quick microbes. Improving absorption is frequently warmed.

2. Corrosive Liquor : This is the decolorizing specialist, commonly a combination of hydrochloric corrosive and ethanol. It eliminates the carbol fuchsin from non-corrosive quick microscopic organisms.

3. Methylene Blue : This is the counterstain used to variety non-corrosive quick microscopic organisms, permitting them to be recognized from corrosive quick microbes.

These reagents cooperate to work with the ID of corrosive quick organic entities, especially mycobacteria.


🔸 Methodology

The corrosive quick staining methodology ordinarily follows these means:

1. Readiness : Set up a bacterial smear on a glass slide and permit it to air dry, then, at that point, heat-fix it by going it through a fire.

2. Essential Staining : Apply carbol fuchsin to the slide and intensity tenderly (not bubbling) for around 5 minutes, permitting the color to enter.

3. Decolorization : Flush the slide momentarily with water, then apply corrosive liquor for around 1-2 minutes until the variety quits running. Flush again with water.

4. Counterstaining : Apply methylene blue for around 30 seconds, then, at that point, wash with water.

5. Perception : Permit the slide to dry and look at it under a magnifying lens. Corrosive quick microscopic organisms will seem red, while non-corrosive quick microbes will seem blue.

This technique is critical for recognizing mycobacteria in clinical examples.



🔸 Result

In corrosive quick staining, the translation of results depends on the shade of the microbes saw under the magnifying lens:

1. Corrosive Quick Microbes : These will show up radiant red due to holding the carbol fuchsin stain after decolorization. Normal models incorporate Mycobacterium tuberculosis and Mycobacterium leprae.

2. Non-Corrosive Quick Microscopic organisms : These will seem blue, having lost the essential stain during the decolorization step and taken up the methylene blue counterstain.

The presence of red, corrosive quick bacilli demonstrates an expected disease with mycobacterial species, while the shortfall of red staining proposes no corrosive quick organic entities are available. This qualification is significant for diagnosing infections like tuberculosis.


🔸 Benefits

1. Explicitness : Corrosive quick staining explicitly recognizes mycobacteria, especially Mycobacterium tuberculosis, supporting the conclusion of sicknesses like tuberculosis and uncleanliness.

2. Visual Qualification : The staining strategy gives a reasonable visual separation between corrosive quick and non-corrosive quick microbes, taking into consideration speedy evaluation under the magnifying instrument.

3. Straightforward and Financially savvy : The method requires moderately basic materials and is practical, making it open for some research centers.

4. Fast Outcomes : Results can be gotten immediately contrasted with culture techniques, which can require weeks.

5. No Exceptional Hardware Required : Standard lab gear gets the job done, making it useful for different settings.



🔸 Constraints

1. Awareness : The technique may not distinguish low quantities of corrosive quick microorganisms, prompting misleading negatives, especially in right on time or less serious contaminations.

2. Vague Staining : Some non-mycobacterial life forms can likewise seem corrosive quick, possibly prompting confusion.

3. Expertise Prerequisite : Appropriate method and experience are required for exact outcomes, particularly in perusing and deciphering stained slides.

4. Doesn't Give Species ID : While it distinguishes corrosive quick microorganisms, it doesn't separate between species, requiring further tests for complete recognizable proof.

5. Potential for Pollution : In the event that examples are not dealt with as expected, tainting can happen, influencing results.



🔸  Applications

1. Clinical Diagnostics : Fundamentally utilized for diagnosing tuberculosis and uncleanliness by recognizing corrosive quick bacilli in persistent examples, like sputum or tissue.

2. General Wellbeing : Assumes an imperative part in epidemiological examinations and observing flare-ups of mycobacterial diseases.

3. Research : Utilized in microbiological studies to examine the properties and conduct of mycobacteria.

4. Ecological Testing : Applied in surveying the presence of mycobacteria in natural examples, which can have suggestions for general wellbeing.

5. Quality Control in Research centers : Used to confirm the presence of mycobacterial foreign substances in lab societies.

In rundown, corrosive quick staining is a significant device in microbial science, especially for diagnosing sicknesses brought about by mycobacteria. While it has limits, its benefits make it a fundamental system in clinical and research settings.

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