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Related Concept Videos

Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies01:22

Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies

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The key clinical manifestations of Rheumatic heart disease (RHD) include several distinct cardiac symptoms.Carditis, a hallmark of acute rheumatic fever, involves inflammation of the heart's endocardium, myocardium, and pericardium. Chronic RHD often results from recurrent episodes of carditis. Its symptoms include the following:Murmurs are caused by valvular damage, especially to the mitral and aortic valves. Mitral stenosis or regurgitation is common, with characteristic heart murmurs...
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Myocarditis II: Clinical Features and Diagnostic Tests01:27

Myocarditis II: Clinical Features and Diagnostic Tests

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Myocarditis is an inflammation of the heart muscle. The symptoms vary widely, encompassing asymptomatic presentations to severe, acute manifestations.Clinical PresentationAsymptomatic cases: In some instances, myocarditis may be asymptomatic, with the infection resolving without intervention. These cases often go undetected unless discovered incidentally through diagnostic imaging or tests conducted for other reasons.General Early Symptoms: Early symptoms of myocarditis are non-specific and can...
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Bacterial Phylum Spirochaetes

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Spirochetes, unique bacteria in the phylum Spirochaetes, are gram-negative, motile, tightly coiled, slender, and flexible. They inhabit aquatic sediments and animals, with some causing diseases like syphilis. Spirochetes are classified into eight genera based on habitat, pathogenicity, phylogeny, and characteristics.Their distinctive motility arises from endoflagella, located within the cell’s periplasm. These endoflagella anchor at the cell poles and extend along the cell length, encased...
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Lysogenic Cycle of Bacteriophages00:43

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In contrast to the lytic cycle, phages infecting bacteria via the lysogenic cycle do not immediately kill their host cell. Instead, they combine their genome with the host genome, allowing the bacteria to replicate the phage DNA along with the bacterial genome. The incorporated copy of the phage genome is called the prophage. Some prophages can re-activate and enter the lytic cycle. This often occurs in response to a perturbation, such as DNA damage, but can also transpire in the absence of...
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Lysosomes are the site for the degradation of macromolecules and biological polymers released during membrane trafficking events such as secretory, endocytic, autophagic, and phagocytic pathways. The membrane-enclosed area of the lysosome, called the lumen, contains hydrolytic enzymes active in an acidic environment. These acid hydrolases are functional at a pH between 4.5 and 5 and are involved in cellular processes such as cell signaling, energy metabolism, restoration of the plasma membrane,...
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Acute Pharyngitis01:30

Acute Pharyngitis

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Introduction
Acute pharyngitis is the inflammation of the back of the throat (pharynx), commonly resulting in a sore throat. It is a frequently encountered condition that prompts individuals to seek medical advice.
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Related Experiment Video

Updated: Feb 22, 2026

Detecting the Lyme Disease Spirochete, Borrelia Burgdorferi, in Ticks Using Nested PCR
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Lyme disease in children.

K Belani, W E Regelmann

    Rheumatic Diseases Clinics of North America
    |November 1, 1989
    PubMed
    Summary

    Lyme disease poses a growing threat to children. Early diagnosis and treatment of Borrelia burgdorferi infection are crucial to prevent long-term health issues and chronic borreliosis.

    Area of Science:

    • Pediatrics
    • Infectious Diseases
    • Neurology

    Background:

    • Lyme disease, caused by Borrelia burgdorferi, is a significant and increasing health concern in pediatric populations.
    • Familiarity with diverse clinical presentations of Lyme disease is essential for pediatricians.
    • The potential for developing tertiary chronic borreliosis necessitates diligent follow-up care.

    Purpose of the Study:

    • To underscore the importance of recognizing Lyme disease in children.
    • To highlight the need for prompt antibiotic therapy and ongoing patient management.
    • To emphasize Lyme disease's role in the differential diagnosis of specific pediatric conditions.

    Main Methods:

    • Review of clinical syndromes associated with Borrelia burgdorferi infection in children.

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  • Evaluation of diagnostic considerations, including neurological and rheumatological presentations.
  • Assessment of serologic test utility in pediatric Lyme disease.
  • Main Results:

    • Lyme disease requires consideration in cases of childhood arthritis, heart block, and undiagnosed central and peripheral nervous system disorders.
    • Serologic tests demonstrate good specificity and sensitivity in children with late-stage Lyme disease.
    • Early-stage diagnostic advancements are anticipated to improve management and reduce sequelae.

    Conclusions:

    • Pediatricians must be adept at identifying and managing Lyme disease due to its increasing prevalence.
    • Timely antibiotic treatment and consistent follow-up are vital to mitigate the risk of chronic borreliosis.
    • Further development of early-stage diagnostic tools will enhance Lyme disease management and minimize long-term complications in children.